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source: trunk/bootcode/airboot.asm@ 90

Last change on this file since 90 was 89, checked in by Ben Rietbroek, 8 years ago

Reordered debug-module a bit [v1.1.1-testing]

CAUTION:
This is a testbuild !
AirBoot uses the BIOS to access disks and a small coding error can trash
partition tables or other vital disk structures. You are advised to make
backups of TRACK0 and EBRs before using this testbuild. More info at:
https://rousseaux.github.io/netlabs.air-boot/pdf/AirBoot-v1.1.0-manual.pdf

File size: 94.9 KB

Rev	Line
[40]	1	;
[29]	2	; AiR-BOOT (c) Copyright 1998-2008 M. Kiewitz
	3	;
	4	; This file is part of AiR-BOOT
	5	;
	6	; AiR-BOOT is free software: you can redistribute it and/or modify it under
	7	; the terms of the GNU General Public License as published by the Free
	8	; Software Foundation, either version 3 of the License, or (at your option)
	9	; any later version.
	10	;
	11	; AiR-BOOT is distributed in the hope that it will be useful, but WITHOUT ANY
	12	; WARRANTY: without even the implied warranty of MERCHANTABILITY or FITNESS
	13	; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
	14	; details.
	15	;
	16	; You should have received a copy of the GNU General Public License along with
	17	; AiR-BOOT. If not, see <http://www.gnu.org/licenses/>.
	18	;
[7]	19
[36]	20
[51]	21
	22
	23
	24
	25
	26	;##############################################################################
[46]	27	; AiR-BOOT / DEFINITIONS
[51]	28	;##############################################################################
[7]	29
[46]	30	;
	31	; Include AiR-BOOT Version Information.
[51]	32	; This version-info is defined using simpel EQU's so it can serve as a
	33	; single source for other formats. The AiR-BOOT signature and the
	34	; OS/2 BLDLEVEL use this basic version information.
[46]	35	;
[70]	36	include ../include/version.inc
[30]	37
[46]	38	;
	39	; Include OS/2 BLDLEVEL Information.
[51]	40	; It uses the version-information in VERSION.INC to build it's signature.
[46]	41	;
[60]	42	include bldlevel.inc
[46]	43
[51]	44	;
	45	; Include some macro's.
	46	; This file contains the ORIGIN macro that is used to detect overlaps.
	47	;
[60]	48	include ../include/asm.inc
[46]	49
[51]	50
[30]	51	; We actually don't want to use this directive because it generates extra
	52	; NOP instructions that we can do without.
[31]	53	; TASM also has a bug in that when the .ERR2 directive is used when
	54	; the .386 directive is in effect, the JUMPS directive is also active
	55	; and cannot be turned off.
[30]	56	; NOJUMPS seems to have no effect in this situation.
	57	; In this case 4 NOP instructions are generated after forward referencing jump
	58	; instructions, to allow for automatic recoding by TASM.
	59	; This seems to be a TASM bug. (v2,v3,v4, dunno v5)
[43]	60	IFDEF TASM
	61	;~ JUMPS
	62	ENDIF
[30]	63
[51]	64
[30]	65	;
	66	; If defined then each module is prefixed with it's name.
[51]	67	; This is used for debugging purposes but it also increases code space.
[30]	68	; It should be off in release code.
	69	;
[51]	70	;~ MODULE_NAMES EQU
[30]	71
	72
	73
[51]	74	; -----------------------------------------------------------------------------
	75	; DEBUG
	76	; -----------------------------------------------------------------------------
[30]	77
[31]	78	;
[51]	79	; Enable this to include Debug Modules and enable COM-port debugging.
	80	; To have room for the debug-code, the FX-code can only be enabled
	81	; when AUX_DEBUG is not defined.
[45]	82	;
[71]	83	AUX_DEBUG EQU
[45]	84
[51]	85	;
	86	; To have FX enabled, make sure FX_ENABLE is defined.
	87	; There is no need (for now) to remove Cooper Bars from the setup-menu
	88	; because AiR-BOOT does not crash when enabling Cooper Bars while FX
	89	; is not compiled in. Only TAB to post-screen does not work.
	90	; Way to go Martin !
	91	;
	92	IFNDEF AUX_DEBUG
	93	FX_ENABLED EQU
	94	ENDIF
[45]	95
	96
	97
[51]	98	; -----------------------------------------------------------------------------
	99	; AUX
	100	; -----------------------------------------------------------------------------
[45]	101	;
[31]	102	; bits 7-5 = datarate
	103	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
	104	; bits 4-3 = parity
	105	; (00 or 10 = none, 01 = odd, 11 = even)
	106	; bit 2 = stop-bits
	107	; (set = 2 stop-bits, clear = 1 stop-bit)
	108	; bits 1-0 = data-bits
	109	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
	110	;
[30]	111
[31]	112	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
[43]	113	AUX_INIT_PARMS EQU 11100011b
[31]	114
[43]	115	; Com-port for debugging, 0 is disabled
	116	BIOS_COM_PORT EQU 1
	117
[31]	118	; Default word value for BIOS_AuxParms variable
	119	; Note that is has moved since v1.07
[43]	120	BIOS_AUXPARMS_DEFAULT EQU (AUX_INIT_PARMS SHL 8) OR BIOS_COM_PORT
[31]	121
[78]	122	; Default byte value for BIOS_BootDisk variable
[77]	123	BIOS_BOOTDISK_DEFAULT EQU 80h
[43]	124
	125
	126
[51]	127	; -----------------------------------------------------------------------------
	128	; LABELS
	129	; -----------------------------------------------------------------------------
	130	; Address labels after code-move
[76]	131	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
	132	BootBasePtr equ 0h ; We put our MBR to this location
[51]	133	BootBaseExec equ BootBasePtr+offset MBR_RealStart
[76]	134	StackSeg equ 07000h ; Put the stack below the code
	135	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
	136	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
[7]	137
	138
[30]	139
[51]	140	; -----------------------------------------------------------------------------
	141	; VIDEO
	142	; -----------------------------------------------------------------------------
[30]	143	; Video pages, no INT 10h is used for menu-drawing etc.
[7]	144	VideoIO_Page0 equ 0B800h
	145	VideoIO_Page1 equ 0B900h
	146	VideoIO_Page2 equ 0BA00h
	147	VideoIO_Page4 equ 0BC00h
	148	VideoIO_FXSegment equ 0A000h
	149
[30]	150	; Special line-drawing characters
[69]	151	TextChar_WinLineRight equ 0C4h
	152	TextChar_WinLineDown equ 0B3h
	153	TextChar_WinRep1 equ 0D1h
	154	TextChar_WinRep2 equ 0C5h
	155	TextChar_WinRep3 equ 0CFh
	156	TextChar_WinRep4 equ 0B5h
	157	TextChar_WinRep5 equ 0C6h
	158	TextChar_WinRep6 equ 0D8h
[7]	159
[51]	160
	161
	162	; -----------------------------------------------------------------------------
	163	; PARTITION TABLE
	164	; -----------------------------------------------------------------------------
	165	; Offsets for Partition-Entries in MBR/EBRs
[37]	166	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
	167	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
[51]	168	LocBRPT_BeginCHS equ 1 ; Packed CHS value
	169	LocBRPT_BeginHead equ 1 ; Start head, usually < 16
	170	LocBRPT_BeginSector equ 2 ; Start sector, max 63 + cyl high bits
	171	LocBRPT_BeginCylinder equ 3 ; Start cylinder 8+2 bits, max 1023
[37]	172	LocBRPT_SystemID equ 4 ; Type of system using the partition
[51]	173	LocBRPT_EndCHS equ 5 ; Packed CHS value
	174	LocBRPT_EndHead equ 5 ; End head, usually < 16
	175	LocBRPT_EndSector equ 6 ; End sector, max 63 + cyl high bits
	176	LocBRPT_EndCylinder equ 7 ; End cylinder 8+2 bits, max 1023
	177	LocBRPT_RelativeBegin equ 8 ; LBA32 address of partition
	178	LocBRPT_AbsoluteLength equ 12 ; 32-bit length of partition
[7]	179
[51]	180	; Signature relative to start of MBR/EBR
	181	LocBR_Magic equ 510 ; Offset of 0AA55h signature
[7]	182
[51]	183	; -----------------------------------------------------------------------------
	184	; LVM RECORD
	185	; -----------------------------------------------------------------------------
[34]	186	; Used as a quick compare in LVM.ASM
[37]	187	LocLVM_SignatureByte0 equ 02h
[30]	188
[34]	189	; Offsets for LVM Information Sector.
	190	; These are relative to the start of the LVM sector.
[37]	191	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
	192	LocLVM_CRC equ 08h ; CRC is a DWORD
	193	LocLVM_Heads equ 1ch ; Number of heads
	194	LocLVM_Secs equ 20h ; Sectors per Track
	195	LocLVM_DiskName equ 24h ; Name of the disk
	196	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
	197	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
[30]	198
[34]	199	; An LVM info-sector can contain information on max. 4 partitions.
	200	; All 4 entries will be used when there 4 primary partitions defined.
	201	; For logical partitions, the LVM info-sector is located below the start
	202	; of the logical partition and only one LVM entry is used in that logical
	203	; LVM info-sector.
[37]	204	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
[30]	205
[51]	206
	207	; -----------------------------------------------------------------------------
	208	; LVM ENTRY
	209	; -----------------------------------------------------------------------------
[34]	210	; Offsets for LVM entry.
	211	; These are relative to the start of the entry.
[51]	212	LocLVM_VolumeID equ 00h ; DWORD
	213	LocLVM_PartitionID equ 04h ; DWORD
	214	LocLVM_PartitionSize equ 08h ; DWORD
	215	LocLVM_PartitionStart equ 0ch ; DWORD
[37]	216	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
	217	LocLVM_Startable equ 11h ; is Startable (newly installed system)
[51]	218	LocLVM_VolumeLetter equ 12h ; Drive Letter for partition (C-Z or 0)
	219	LocLVM_Unknown equ 13h ; unknown BYTE (can be used ?)
	220	LocLVM_InstallLetter equ 13h ; unknown BYTE (can be used ?)
[37]	221
[71]	222	; Truncated to 11 chars when displayed in menu.
[34]	223	; MiniLVM sets both to the same value.
	224	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
	225	; Same goes for LocLVM_DiskName.
[45]	226	; These offsets are relative to an LVM entry.
[37]	227	LocLVM_VolumeName equ 14h ; 20 bytes
	228	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
[30]	229
[45]	230	; LVM constants.
[51]	231	LocLVM_LabelLen equ 14h ; Length of LVM Label (Disk/Part/Vol)
	232	LocLVM_DiskNameLen equ 14h ; Length of LVM DiskName
	233	LocLVM_VolumeNameLen equ 14h ; Length of LVM VolumeName
	234	LocLVM_PartitionNameLen equ 14h ; Length of LVM PartitionName
[30]	235
[34]	236
[51]	237	; -----------------------------------------------------------------------------
	238	; AiR-BOOT IPT
	239	; -----------------------------------------------------------------------------
[7]	240	; Offsets for IPT (Internal Partition Table)
[51]	241	LocIPT_MaxPartitions equ max_partitions ; 45 in v1.07+
[37]	242	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
	243	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
	244	LocIPT_Serial equ 0 ; Serial from MBR ?
	245	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
	246	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
	247	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
[51]	248	LocIPT_Flags equ 17 ; AiR-BOOT Flags for part (see below)
[37]	249	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
	250	LocIPT_LocationBegin equ 20 ; Begin of Partition
	251	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
	252	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
	253	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
[7]	254
[38]	255
[30]	256	; AiR-BOOT IPT-Flags
[37]	257	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
[51]	258	LocIPT_DefaultNonBootFlags equ 00000010b ; VIBR Detection is always on
[7]	259
[37]	260	Flags_Bootable equ 00000001b
	261	Flags_VIBR_Detection equ 00000010b
	262	Flags_HideFeature equ 00000100b
	263	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
[46]	264	Flags_ExtPartMShack equ 00010000b ; Ext. Partition M$-Hack req ?
[37]	265	Flags_NoPartName equ 01000000b
	266	Flags_NowFound equ 10000000b ; temp only in OldPartTable
	267	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
[7]	268
[37]	269	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
	270	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
	271	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
	272	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
[7]	273
[51]	274
	275	; -----------------------------------------------------------------------------
	276	; AiR-BOOT HPT
	277	; -----------------------------------------------------------------------------
	278	; Hidden Partition Table
	279	; Length of an HPT-entry ((45 * 6 bits-per-part) / 8) * 45
	280	; 33.75 = 34 bytes for HPT-entry, coincidently same as length of IPT-entry.
	281	; Packed table !
	282	LocHPT_LenOfHPT equ 34
	283
	284
	285	; -----------------------------------------------------------------------------
	286	; NAVIGATION KEYS
	287	; -----------------------------------------------------------------------------
[30]	288	; Navigation keys
[37]	289	Keys_Up equ 48h
	290	Keys_Down equ 50h
	291	Keys_Left equ 4Bh
	292	Keys_Right equ 4Dh
	293	Keys_PageUp equ 49h
	294	Keys_PageDown equ 51h
	295	Keys_GrayPlus equ 4Eh
	296	Keys_GrayMinus equ 4Ah
	297	Keys_Plus equ 1Bh
	298	Keys_Minus equ 35h
	299	Keys_ENTER equ 1Ch
	300	Keys_ESC equ 1h
	301	Keys_F1 equ 3Bh
	302	Keys_F10 equ 44h
[51]	303	Keys_C equ 2Eh ; Add. Check for Ctrl!
[37]	304	Keys_Y equ 2Ch
	305	Keys_Z equ 15h
	306	Keys_N equ 31h
	307	Keys_TAB equ 0Fh
	308	Keys_Delete equ 53h
	309	Keys_Backspace equ 0Eh
	310	Keys_Space equ 20h
[7]	311
[37]	312	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
[7]	313
	314
[51]	315	; -----------------------------------------------------------------------------
	316	; MISC
	317	; -----------------------------------------------------------------------------
	318	; Initial value for the FreeDriveletterMap
	319	; Meaning A,B not free; C-Z free, rest unused. (right to left)
	320	; Each partition with an assigned drive-letter clears a bit in this map.
	321	; (Not implemented yet)
	322	InitialFreeDriveletterMap equ 00000011111111111111111111111100b
[46]	323
[51]	324	;
	325	; The first harddisk is BIOS coded 80h.
	326	; This makes a total of 128 disks that could be supported using this coding.
	327	; This value is used to store disk-information and this info is allocated
	328	; in the BSS. 64 disks ought to be enough for everybody :-)
	329	;
	330	MaxDisks equ 64
[46]	331
	332
	333
[51]	334
	335
	336
	337	;##############################################################################
[46]	338	; AiR-BOOT / MAIN-CODE
[51]	339	;##############################################################################
[46]	340
[51]	341	;
[43]	342	; Because of the TASM-bug the processor had to be changed to turn JUMPS
	343	; off. Existing movzx instructions were replaced with 286 equivalent code.
	344	; Out of range relative jumps have been recoded.
[51]	345	;
	346	; Since version 1.0.8, JWasm is the preferred assembler and Tasm will be
	347	; dropped. Also, the chances of AiR-BOOT being used on a 286-machine are
	348	; very slim, so a future version will revert back to .386 and also incorporate
	349	; 32-bit code. This will enable some enhanced constructs such as scaled
	350	; indexing, bit-instructions, 32-bit registers and what not.
	351	;
[43]	352	.286
[30]	353
[51]	354	;
	355	; For Tasm, MODEL is needed for the USES directive to work.
	356	; So always use a model when assembling with Tasm otherwise registers on
	357	; function calls that use USES are not saved and restored.
	358	; The model itself, has no real effect because we generate a binary image
	359	; and not a segmented executable.
	360	; For the other assemblers we define no model to get rid of the default C/C++
	361	; segments for future object-linked versions of AiR-BOOT.
	362	;
[43]	363	IFDEF TASM
[46]	364	;~ .model large, basic
[43]	365	.model tiny,c
	366	ENDIF
[37]	367
	368	;
[51]	369	; The below is used to switch between the original 1-segment (code_seg) layout
	370	; and the new 2-segment (code_seg and bss_data) layout.
	371	; It will be removed in future versions.
[37]	372	; The 2-segment layout was needed for JWasm because it does not treat
[51]	373	; db ? at the end of a code segment as bss-data.
[37]	374	; Therefore, a true BSS segment is now used.
[51]	375	; Both the code_seg and the bss_data are grouped to the logical AIRBOOT
[37]	376	; segment.
	377	; Note that this influences the offsets in the BSS in the list-file and
	378	; the wdis disassembly file (.WDA).
	379	; They are now segment-relative. The true offset is resolved at link
	380	; time.
	381	;
[43]	382	SEGMENTED EQU
[37]	383
[51]	384	IFDEF SEGMENTED
	385	AIRBOOT GROUP LDRIMAGE,VOLATILE
	386	ENDIF
[37]	387
[51]	388	; Our code-segment starts here.
	389	LDRIMAGE SEGMENT USE16 PUBLIC 'CODE'
[7]	390
[51]	391	IFDEF SEGMENTED
	392	ASSUME CS:AIRBOOT, DS:AIRBOOT, ES:nothing, SS:nothing
	393	ELSE
	394	ASSUME CS:LDRIMAGE,DS:LDRIMAGE,ES:nothing, SS:nothing
	395	ENDIF
[30]	396
[51]	397
	398
[31]	399	;==============================================================================
[51]	400	; Sector 1
	401	;==============================================================================
[30]	402
[51]	403	;------------------------------------------------------------------------------
[46]	404	; We are not a .COM file at 100h but a BINARY image
	405	; of which only the 1st sector gets loaded at 0000:07c00h
	406	; by the BIOS. The code in this 1st sector is position
	407	; independent and moves itself to a new location at 8000:0000h.
	408	; Then it jumps to a new entry-point and loads the rest of
	409	; the image to the new location.
[51]	410	org 00000h
	411	;------------------------------------------------------------------------------
[30]	412
[46]	413
	414	;
[51]	415	; Since AiR-BOOT is a boot-loader residing in track0, the first 512 bytes
	416	; have the layout of a Master Boot Record (MBR). When AiR-BOOT get's installed,
	417	; the first 512 bytes of this code get's merged with the Partition Table.
	418	; The rest is installed in the remaining sectors with sector 62 (LBA 61)
	419	; being the last sector used by AiR-BOOT. Sector 63 is reserved for IBM LVM.
	420	; The last sector used by AiR-BOOT is a copy of the MBR that AiR-BOOT makes
	421	; every time a system gets booted.
[46]	422	;
[30]	423
[46]	424	;
[51]	425	; Due to the addition of an extra 'I13X' sugnature and code to preserve the
	426	; values of the registers on entry, the MBR-code has become a bit messy.
	427	; This will be cleaned-up in future versions.
	428	;
	429
	430	;
[46]	431	; Martin had a short jump followed by the AiRBOOT signature at first.
	432	; Then he encountered strange behaviour by some M$ operating-systems
	433	; if the the first insruction was not a CLI.
[30]	434	; But there was no room to insert the CLI and of course he did not want to
[51]	435	; change the location of the AiR-BOOT signature.
[30]	436	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
[51]	437	; jump that uses the 'A' of the AiR-BOOT signature as the jump displacement.
[46]	438	;
[30]	439
	440
[51]	441	; -----------------------------------------------------------------------------
	442	; FIRST ENTRY-POINT
	443	; -----------------------------------------------------------------------------
[52]	444	; BOOKMARK: FIRST ENTRY-POINT (Invoked by BIOS)
[51]	445	; ######################################################
	446	; # ENTRY-POINT WHERE THE BIOS TRANSFERS CONTROL TO US #
	447	; ######################################################
[37]	448	AiR_BOOT:
[51]	449	; Some M$ operating systems need a CLI
	450	; here otherwise they will go beserk
	451	; and will do funny things during
	452	; boot phase, it's laughable!
	453	MBR_1stOpc: cli
[30]	454
[51]	455	; JMP-Short -> MBR_Start
	456	; Uses the 'A' from the signature as the displacement !
	457	MBR_JmpOpc db 0EBh
[7]	458
[51]	459	; ID String, Date (DD,MM,CC,YY), Version Number, Language ID
	460	;~ db 'AiRBOOT',24h,02h,20h,12h,01h,08h,TXT_LanguageID
	461	MBR_ABSig: InsertAirbootSignature TXT_LanguageID
[37]	462
[51]	463	; Total Code Sectors Count.
	464	; Actual value will be inserted by FIXCODE.
	465	MBR_CodeSecs db 1
[37]	466
[51]	467	; Total Code Sectors Count, dynamically calculated.
	468	;~ db (code_end-$)/512
[37]	469
[51]	470	; Check-Sum for Code
	471	MBR_CheckCode dw 0
[37]	472
	473
	474
[51]	475	; -----------------------------------------------------------------------------
	476	; THIRD ENTRY-POINT
	477	; -----------------------------------------------------------------------------
[52]	478	; BOOKMARK: THIRD ENTRY-POINT (Relocate code)
[30]	479	;
	480	; No single instruction below should be changed, added or removed in the code
	481	; below as this will cause the jump-link to go haywire.
[31]	482	;
[37]	483	MBR_Start:
[51]	484	;
	485	; When we arrive here, no registers have been used yet.
	486	; So, they still contain the values the BIOS left in them.
	487	; We want to preserve those value's for later inspection
	488	; by putting them on the stack.
	489	;
[30]	490
[51]	491	; No space for this instruction here.
	492	; We'll enable interrupts later.
	493	;sti ; This opcode is dedicated to:
	494	; =MICROSOFT JUMP DEPARTMENT=
	495
	496	; Push all registers with values provided by the BIOS
	497	; on the stack.
	498	pusha
	499
	500	;
[37]	501	; Setup some base stuff
	502	; AX got loaded wrongly for debug, changed the instructions
	503	; without modifying the number of bytes.
[51]	504	; Don't comment-out the redundant instruction below because it
[37]	505	; will change the number of bytes and break the jump-chain.
[51]	506	;
	507
	508	; The segment we are moving ourself from (NOT USED)
	509	;mov ax, StartBaseSeg
[37]	510	;mov ds, ax
[51]	511
	512	; Make sure DS points to CS.
[37]	513	push cs
	514	pop ds
[51]	515
	516	; Setup the source and destination for the code move.
	517	mov si, StartBasePtr ; The offset we move ourself from
	518	mov ax, BootBaseSeg ; The target segment we move to
[37]	519	mov es, ax
[51]	520	;mov di, BootBasePtr ; The target offset we move to
	521	; Changed the instruction to make room.
	522	; So, BootBasePtr is not used !
	523	; The offset in the target segment is assumed to be 0000
	524	; anyway.
	525	xor di,di
	526	;sti
[30]	527
[76]	528	; Size of the MBR in words.
[37]	529	mov cx, 256 ; Pre-boot environment
[30]	530
[37]	531	;
[51]	532	; This moves this 512-byte sector, loaded by the BIOS at
	533	; 0000:7c00 to 8000:0000.
[37]	534	;
[51]	535	cld
[37]	536	rep movsw
[30]	537
[77]	538	; Temporary save SS and SP so we still have access to this
	539	; stack after we have setup our own.
	540	mov cx,ss
	541	mov bx,sp
	542
[51]	543	; Code an intersegment jump to the new location.
	544	; jmp BootBaseSeg:BootBaseExec
	545	; Note that DX:BX containts the old SS:SP.
[37]	546	db 0EAh
[46]	547	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
	548	dw BootBaseSeg ; This is 08000h
[7]	549
[30]	550
[51]	551
	552
	553	; -----------------------------------------------------------------------------
	554	; SIMPLE MBR FUNCTIONS
	555	; -----------------------------------------------------------------------------
[30]	556	;
	557	; Some MBR-functions to provide absolute minimum functionality.
	558	;
	559
	560	;
[52]	561	; BOOKMARK: Halt System
[30]	562	; Entry-point for halting the system.
	563	;
[7]	564	MBR_HaltSystem:
[37]	565	mov ax, 8600h
	566	xor cx, cx
	567	mov dx, 500
[46]	568	int 15h ; Wait to display the whole screen :]
	569	MBR_HaltSys:
[81]	570	;~ cli
[37]	571	jmp MBR_HaltSys
[7]	572
[31]	573
[77]	574	; Base of some MBR variables
[45]	575	ORIGIN 0003Ch
	576
[77]	577	MBR_Variables:
	578
[51]	579	; Comport settings.
	580	; It had to be moved to create room for the double I13X signature.
[37]	581	; It cannot be in the config-area (sector 55)
[43]	582	; because that area is crc-protected and would not allow 'poking'.
	583	BIOS_AuxParms dw BIOS_AUXPARMS_DEFAULT
[31]	584
[77]	585	; When the BIOS turns over control to the MBR, DL holds the BIOS disk-number
	586	; from which the boot was initiated. This would normally be 80h, corresponding
	587	; to the first physical disk. However, some modern BIOSses can directly boot
	588	; from other disks, so AirBoot cannot assume being loaded from 80h anymore.
	589	; So here we store the BIOS disk-number passed in DL when AirBoot got control.
	590	BIOS_BootDisk db BIOS_BOOTDISK_DEFAULT ; Get overwritten with 'DL'
[51]	591
[77]	592	; Reserved space for future variables.
[51]	593	IFDEF AUX_DEBUG
[77]	594	reserved db 5 dup('X')
[51]	595	ELSE
[77]	596	reserved db 5 dup(0)
[51]	597	ENDIF
[30]	598
[45]	599
[51]	600
	601
	602	; -----------------------------------------------------------------------------
	603	; SECOND ENTRY-POINT
	604	; -----------------------------------------------------------------------------
[77]	605
[37]	606	;
	607	; We arrive here after the first jump using the 'A' of the
[51]	608	; AiR-BOOT signature. So we ensure the jump is always at
	609	; this offset. We jump here, because Martin needed to
	610	; insert a CLI on start and did not want to change the
	611	; AiR-BOOT signature because of Microsoft inventions...
[45]	612	;
	613	ORIGIN 00044h
[37]	614
	615	; Jump again...
[51]	616	; This time to the code that relocates to 8000:0000.
[52]	617	; BOOKMARK: SECOND ENTRY_POINT (Skipped over AB signature)
[37]	618	jmp MBR_Start
	619
[30]	620	;
	621	; Entry-point when loading fails.
	622	;
[37]	623	db 'LOAD ERROR!', 0
	624	MBR_LoadError Proc Near
	625	mov si, offset $-12
	626	push cs
	627	pop ds
	628	call MBR_Teletype
	629	MBRLE_Halt:
	630	jmp MBRLE_Halt
	631	MBR_LoadError EndP
[7]	632
[30]	633	;
	634	; Entry-point when saving fails.
	635	;
[37]	636	db 'SAVE ERROR!', 0
	637	MBR_SaveError Proc Near
	638	mov si, offset $-12
	639	push cs
	640	pop ds
	641	call MBR_Teletype
	642	MBRSE_Halt:
	643	jmp MBRSE_Halt
	644	MBR_SaveError EndP
[7]	645
[30]	646
	647	; Put text on the screen using the BIOS tele-type function.
	648	; No attributes like color are supported.
[7]	649	; In: SI - Pointer to begin of string (EOS is 0)
	650	; Destroyed: SI
[37]	651	MBR_Teletype Proc Near Uses ax bx cx
	652	mov ah, 0Eh
	653	mov bx, 7
	654	MBRT_Loop:
	655	lodsb
	656	or al, al
	657	jz MBRT_End
	658	int 10h
	659	jmp MBRT_Loop
	660	MBRT_End:
	661	ret
	662	MBR_Teletype EndP
[7]	663
[30]	664	;
	665	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
	666	;
	667
[52]	668	; In: BX - Base Check
	669	; DS:SI - Pointer to 512-byte-area to be included
	670	; Out: BX - Base Check Result
[7]	671	; Destroyed: SI will get updated (+512)
[37]	672	MBR_GetCheckOfSector Proc Near Uses ax cx
	673	mov cx, 256
	674	MBRGCOS_Loop:
	675	lodsw
	676	xor ax, 0BABEh
	677	xor bx, ax
	678	loop MBRGCOS_Loop
	679	or bx, bx
	680	jnz MBRGCOS_NoFixUp
	681	mov bx, 1 ; dont allow 0, cause 0 == empty
	682	MBRGCOS_NoFixUp:
	683	ret
	684	MBR_GetCheckOfSector EndP
[7]	685
[30]	686
	687
	688
	689
	690
[51]	691	; -----------------------------------------------------------------------------
	692	; ENTRY-POINT OF MOVED CODE
	693	; -----------------------------------------------------------------------------
	694
[30]	695	;
[51]	696	; When we arrive here we are running at 8000:0000.
[77]	697	; CX:BX contains the SS:SP of the old stack.
[30]	698	;
	699
[51]	700	;
	701	; This is where the rest of AiR-BOOT gets loaded from track0.
	702	;
[52]	703	; BOOKMARK: Running at relocated position (Load additional sectors)
[31]	704	;------------------------------------------------------------------------------
[7]	705	MBR_RealStart:
[51]	706	;
	707	; Setup new stack and other segment registers.
	708	;
[37]	709	mov ax, StackSeg ; 07000h, below the moved code
	710	mov ss, ax
	711	mov sp, 7FFEh ; Even is better
[51]	712	push es ; ES holds segment where we moved to
[52]	713	pop ds ; Set DS=ES to Code Segment
[30]	714
[51]	715	;
[77]	716	; Push the old SS:SP which was saved in CX:BX on the new stack.
[51]	717	;
[77]	718	push cx ; Old SS
[51]	719	push bx ; Old SP
[43]	720
[77]	721	;
	722	; Store the BIOS disk-number AirBoot was loaded from.
	723	;
	724	mov [BIOS_BootDisk], dl
[51]	725
[37]	726	; Load the configuration-sectors from disk.
[51]	727	; These are the main configuration sector and the various
	728	; tables that follow it upto but not including the MBR backup.
[77]	729	mov bx, offset Configuration ; Location in RAM
	730	mov cx, 0037h ; Config sector is at 55d
	731	mov al, (MBR_BackUpMBR - Configuration) / 200h
	732	mov ah, 02h
	733	; DL is already loaded with BIOS disk-number
	734	int 13h ; Call BIOS service
[37]	735	jnc MBR_ConfigCopy_NoError
[30]	736
[37]	737	; Some error occured
	738	MBR_ConfigCopy_LoadError:
[77]	739	jmp MBR_LoadError ; Will Abort BootUp
[30]	740
[77]	741	; Load the code-sectors from disk.
	742	; [MBR_CodeSecs] is filled in by the FIXCODE helper that post
	743	; processes the AIRBOOT loader image after it has been built.
[37]	744	MBR_ConfigCopy_NoError:
[77]	745	mov bx, offset FurtherMoreLoad ; Directly after MBR
	746	mov cx, 0002h ; Start at 2nd sector
	747	mov al, [MBR_CodeSecs] ; Number of code sectors
	748	mov ah, 02h ; Read sectors
	749	; DL is already loaded with BIOS disk-number
	750	int 13h ; Call BIOS service
[37]	751	jnc MBR_RealStart_NoError
[31]	752
[77]	753	; Some error occured
	754	jmp MBR_LoadError ; Will Abort BootUp
[31]	755
[77]	756
	757	; I13X Signatures
	758	ORIGIN 000d0h
	759
[37]	760	; [v1.05+]
	761	; Signature for IBM's LVM to detect our "powerful" features ;)
[45]	762	;
[37]	763	; [v1.0.8+]
	764	; Reworked MBR code to be able to create a
	765	; double 'I13X' signature.
	766	; MBR's created with LVM eCS v1.x have the signature at 0d5h
	767	; MBR's created with LVM eCS v2.x have the signature at 0d0h
	768	; See eCS bugtracker issue #3002
[45]	769	;
[37]	770	; Update: These are actually MOV EAX,'X31I' instructions
	771	; in the eCS LVM MBR-code. They are at different places in
[51]	772	; the v1.x and v2.x LVM MBR-code. Other code might depend on
	773	; their presence. Let's protect their location.
[37]	774	db 'I13X',0,'I13X',0
[31]	775
[30]	776
[37]	777	MBR_RealStart_NoError:
	778	; Now Check Code with CheckSum
	779	mov si, offset FurtherMoreLoad
[30]	780
[37]	781	;movzx cx, bptr ds:[10h]
	782	mov cl, ds:[10h]
	783	mov ch,0
[31]	784
[51]	785	; Claculate checksum
[37]	786	xor bx, bx
	787	MBR_RealStart_CheckCodeLoop:
	788	call MBR_GetCheckOfSector
	789	loop MBR_RealStart_CheckCodeLoop
[31]	790
[72]	791	; Verify checksum
[37]	792	cmp MBR_CheckCode, bx
[72]	793	;~ je MBR_RealStart_CheckSuccess ; CRC verified
	794	jmp MBR_RealStart_CheckSuccess ; Ignore CRC
[7]	795
[72]	796	; Oops, checksum mismatch -- halt the system
[37]	797	mov si, offset TXT_ERROR_Attention
	798	call MBR_Teletype
	799	mov si, offset TXT_ERROR_CheckCode
	800	call MBR_Teletype
	801	mov si, offset TXT_ERROR_CheckFailed
	802	call MBR_Teletype
	803	jmp MBR_HaltSystem
[51]	804
	805
	806	;
	807	; OK, all loading went fine so the rest of the code
	808	; is present now, so we jump to it.
	809	; The old SS:SP is still on the stack.
	810	;
[37]	811	MBR_RealStart_CheckSuccess:
	812	jmp AiR_BOOT_Start
[30]	813
	814
	815
	816
[37]	817
[31]	818	;------------------------------------------------------------------------------
[60]	819	include text/txtmbr.asm ; All translateable Text in MBR
[31]	820	;------------------------------------------------------------------------------
[30]	821
[77]	822	; Disk Signature
	823	ORIGIN 001B8h
[30]	824
	825
[37]	826	; Disk Signature
	827	; Note that in an LVM 2.x MBR this collides
	828	; with the dummy PTE that it uses to look for IBM-BM
	829	; on the second harddisk.
[52]	830	; AiR-BOOT installer will merge the field
	831	; from the MBR it replaces.
[51]	832	MBR_DrvSig db 'DSIG'
[31]	833
[45]	834	; Unused word at 01BCh.
	835	; An LVM 2.x MBR puts 0CC33h here.
[52]	836	; AiR-BOOT installer will merge the field
	837	; from the MBR it replaces.
[51]	838	MBR_Spare dw '$$'
[35]	839
	840
[45]	841	; Partition Table.
	842	ORIGIN 001BEh
[43]	843
[45]	844	; The 4 entries just for show.
[52]	845	; AiR-BOOT installer will merge them from the MBR it replaces.
[51]	846	MBR_PartTable:
[37]	847	db 16 dup('0')
	848	db 16 dup('1')
	849	db 16 dup('2')
	850	db 16 dup('3')
	851
	852	; Boot Sigbature
[51]	853	MBR_Sig dw 0aa55h
[37]	854
[30]	855
	856
	857
[37]	858
[45]	859
[51]	860
[31]	861	;==============================================================================
[51]	862	; Sector 2
	863	;==============================================================================
[30]	864
[51]	865	; -----------------------------------------------------------------------------
	866	; FILE-SYSTEM TABLES
	867	; -----------------------------------------------------------------------------
	868
[77]	869	; First sector the rest of the loader image
[45]	870	ORIGIN 00200h
[30]	871
[31]	872	;
	873	; Everything beyond this point is loaded on startup
	874	; and is NOT existant at first
	875	;
[7]	876	FurtherMoreLoad:
[30]	877
	878	;
	879	; Filesystem table correlating id with name.
	880	;
	881
[37]	882	; first Normal-Partition-ID, Hidden-Partition-ID
[51]	883	; and Default-Partition-Flags.
[37]	884	; 01h -> Boot-Able
	885	; 10h -> FAT32 - Name Getting Scheme
	886	; 20h -> No Name To Get (use Partition Name from IPT)
	887	; 40h -> 'L' flag possible
[7]	888	db 'AiRSYS-TABLE'
[37]	889	FileSysIDs db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
[29]	890	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
	891	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
[7]	892	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
	893	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
	894	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
	895	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	896	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	897	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	898	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
	899	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
	900	db 16 dup (0)
	901
[46]	902	FileSysNames db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
	903	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
	904	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
	905	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
	906	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
	907	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
	908	db ' ', ' ', ' ', ' '
	909	db ' ', ' ', ' ', ' '
	910	db ' ', ' ', ' ', ' '
	911	db ' ', 'Kernel ', ' ', '0V-Award'
	912	; db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
	913	db 'OS2-BMGR', 'via BIOS', 'Floppy ', 'Unknown '
[7]	914	; -> 44 Partition-Types
	915
[30]	916
	917
	918
[37]	919
	920
[51]	921	;==============================================================================
	922	; Sector 3
	923	;==============================================================================
[30]	924
[51]	925	; -----------------------------------------------------------------------------
	926	; ENTRY-POINT AFTER LOADING THE REST OF THE CODE
	927	; -----------------------------------------------------------------------------
[30]	928
[77]	929	; The entry-point jumped to from the MBR code
[51]	930	ORIGIN 00400h
[30]	931
[43]	932
[77]	933	;##############################################################################
	934	;# AiR_BOOT_Start :: This is where the real work begins #
	935	;# -------------------------------------------------------------------------- #
	936	;# At this point, all of AirBoot is loaded, including its configuration. #
	937	;# First, some setup is done, which includes the initialization of variables #
	938	;# in the BSS. After that, disks are scanned for partitions and the required #
	939	;# house keeping is done to incorporate changes from the previous boot. Then #
	940	;# the partition list is prepared and the menu is presented. #
	941	;##############################################################################
[52]	942	; BOOKMARK: AiR_BOOT_Start (AiR-BOOT now completely loaded)
[36]	943	AiR_BOOT_Start:
[30]	944
[36]	945
[51]	946	;
	947	; Enable interrupts.
	948	;
	949	sti
[36]	950
	951	;
[51]	952	; Pop the old SS:SP from the stack and save it in the BSS.
[52]	953	; Note that this is outside the normal variable area that gets cleared.
	954	; This allows AiR-BOOT to restart itself when debugging and come-up
	955	; with access to the original values of registers the BIOS passed.
[51]	956	;
	957	pop [OldSP]
	958	pop [OldSS]
	959
	960
[77]	961	; Verify we still got the BIOS disk in DL
	962	IFDEF AUX_DEBUG
	963	mov ax, dx
	964	call AuxIO_TeletypeHexWord
	965	call AuxIO_TeletypeNL
	966	mov ax, bx
	967	call AuxIO_TeletypeHexWord
	968	call AuxIO_TeletypeNL
	969	xor ah, ah
	970	mov al, [BIOS_BootDisk]
	971	call AuxIO_TeletypeHexWord
	972	call AuxIO_TeletypeNL
	973	ENDIF
	974
[51]	975	; -----------------------------------------------------------------------------
	976	; IBM-BM BOOT PREPARATION
	977	; -----------------------------------------------------------------------------
	978	;
[36]	979	; Since v1.0.8, AiR-BOOT is able to chainload IBM-BM.
	980	; When IBM-BM resides above the 1024-cylinder limit, the 'I13X'
	981	; signature is required at 3000:0000, FS needs to contain 3000h
	982	; and the 32-bit LBA address needs to follow the 'I13X' signature.
	983	; For booting IBM-BM from the second disk, a copy of the MBR of the
	984	; first disk is also required at 0000:7E00.
	985	; This information is derived from the eCS 2.x LVM MBR.
	986	;
	987	; So, now is a good time to copy the MBR of the first disk to
	988	; 0000:7E00 in case the partition that will be started is IBM-BM.
	989	; This copy is located at 8000:0000 and DS already points to this
[51]	990	; segment. The 'I13X' signature and FS will be setup later.
[36]	991	;
[37]	992	pusha ; Save all the general purpose regs
	993	push es ; We need ES too, so save its value
	994	xor ax,ax ; Segment 0000h
	995	mov es,ax ; Make ES point to it
	996	mov si,offset BootBasePtr ; Start of AiR-BOOT which has the MBR
	997	mov di,7e00h ; Destination for the MBR for IBM-BM
	998	mov cx,100h ; 256 words = 512 bytes
	999	cld ; Direction from low to high
	1000	rep movsw ; Copy the 256 words of the MBR
	1001	pop es ; Restore previous value of ES
	1002	popa ; Restore all the general purpose regs
[36]	1003
	1004
[51]	1005	; -----------------------------------------------------------------------------
	1006	; PRECRAP
	1007	; -----------------------------------------------------------------------------
[36]	1008
[51]	1009	;
	1010	; First it clears the BSS area.
[52]	1011	; Note that the old SS:SP is stored outside this area so this
[51]	1012	; does not get lost.
	1013	; Then initialize various runtime variables and structures.
	1014	;
[52]	1015	; BOOKMARK: Pre Crap
[51]	1016	call PRECRAP_Main
	1017	; Number of harddisks and other system-info is now known.
[43]	1018
[51]	1019	;!
	1020	;! DEBUG_BLOCK
	1021	;! Let's see what the BIOS supplied us with...
	1022	;! Uncomment below to activate.
	1023	;!
	1024	__DUMP_BIOS_REGS__ EQU
	1025	IFDEF AUX_DEBUG
	1026	IFDEF __DUMP_BIOS_REGS__
	1027	pushf
	1028	pusha
	1029	; Print title.
	1030	mov si,offset [bios_reg]
	1031	call AuxIO_Print
	1032	; Save the current stack (SS:SP).
	1033	mov ax,ss
	1034	mov [CurrentSS],ax
	1035	mov [CurrentSP],sp
[45]	1036
[51]	1037	; Restore the old stack.
	1038	mov ss,[OldSS]
	1039	mov sp,[OldSP]
[30]	1040
[51]	1041	; Pop the registers with the BIOS values.
	1042	popa
	1043	; Push them back for AiR-BOOT restart (debug mode).
	1044	pusha
	1045	; Dump them to the serial-port.
	1046	call DEBUG_DumpRegisters
	1047	; Restore the current stack.
	1048	mov ax,[CurrentSS]
	1049	mov ss,ax
	1050	mov sp,[CurrentSP]
[30]	1051
[51]	1052	; Restore registers.
	1053	popa
	1054	popf
	1055	ENDIF
	1056	ENDIF
[30]	1057
	1058
[51]	1059	;!
	1060	;! DEBUG_BLOCK
	1061	;! Dump the registers at this point.
	1062	;! Uncomment below to activate.
	1063	;!
	1064	IFDEF AUX_DEBUG
	1065	;~ call DEBUG_DumpRegisters
	1066	; Dump drive-letters of dl-feature before partitions are
	1067	; scanned and processed.
	1068	call DEBUG_DumpDriveLetters
	1069	call DEBUG_DumpVolumeLetters
	1070	call DEBUG_DumpPartitionXref
	1071	ENDIF
	1072
	1073	; -----------------------------------------------------------------------------
	1074	; PARTITION SCAN
	1075	; -----------------------------------------------------------------------------
[77]	1076
	1077
	1078
	1079
	1080
	1081
[51]	1082	;
[52]	1083	; BOOKMARK: Scan all partitions
[51]	1084	;
	1085	call PARTSCAN_ScanForPartitions
	1086	; Internal Partition Table is now populated.
	1087
	1088	;!
	1089	;! DEBUG_BLOCK
	1090	;! Dump various tables.
	1091	;! Uncomment below to activate.
	1092	;!
	1093	IFDEF AUX_DEBUG
[50]	1094	;~ call DEBUG_DumpIPT
[49]	1095	;~ call DEBUG_DumpPartitionPointers
	1096	;~ call DEBUG_DumpNewPartTable
[50]	1097	;~ call DEBUG_DumpDriveLetters
[51]	1098	call DEBUG_DumpDriveLetters
	1099	call DEBUG_DumpVolumeLetters
	1100	call DEBUG_DumpPartitionXref
	1101	ENDIF
[49]	1102
[30]	1103
[51]	1104	; -----------------------------------------------------------------------------
	1105	; RESTORE FORCED DRIVELETTER CORRELATION [LVM]
	1106	; -----------------------------------------------------------------------------
	1107
	1108	;
	1109	; Reconnect forced drive-letters to their corresponding
	1110	; partitions.
	1111	;
[52]	1112	; BOOKMARK: Update Driveletters so they are in-sync again
[51]	1113	call PARTSCAN_UpdateDriveLetters
	1114	; Driveletter <-> Partition correlation is now restored.
	1115
	1116
	1117
	1118	;!
	1119	;! DEBUG_BLOCK
	1120	;! Dump various tables.
	1121	;! Uncomment below to activate.
	1122	;!
	1123	IFDEF AUX_DEBUG
	1124	;~ call DEBUG_DumpIPT
	1125	;~ call DEBUG_DumpPartitionPointers
	1126	;~ call DEBUG_DumpNewPartTable
	1127	;~ call DEBUG_DumpDriveLetters
	1128	call DEBUG_DumpDriveLetters
	1129	call DEBUG_DumpVolumeLetters
	1130	call DEBUG_DumpPartitionXref
	1131	ENDIF
	1132
	1133
	1134	; -----------------------------------------------------------------------------
	1135	; SHOW WE ARE ALIVE
	1136	; -----------------------------------------------------------------------------
	1137
	1138	;
	1139	; Put some info about AiR-BOOT and the system on the screen.
	1140	;
	1141
[49]	1142	; Display number of physical disks found
[37]	1143	mov si, offset DisksFound
	1144	call MBR_Teletype
	1145	mov al, [TotalHarddiscs]
	1146	call VideoIO_SyncPos
	1147	call VideoIO_PrintByteDynamicNumber
	1148	xor si,si
	1149	call MBR_TeletypeNL
[30]	1150
[49]	1151	; Display number of partitions found
[37]	1152	mov si, offset PartitionsFound
	1153	call MBR_Teletype
	1154	mov al, [CFG_Partitions]
	1155	call VideoIO_SyncPos
	1156	call VideoIO_PrintByteDynamicNumber
[30]	1157
[49]	1158	; Dump summier disk-info for disks found
[37]	1159	xor si,si
	1160	call MBR_TeletypeNL
	1161	call MBR_TeletypeNL
	1162	call VideoIO_SyncPos
	1163	mov dl,80h
	1164	call VideoIO_DumpDiskInfo
[30]	1165
	1166
	1167
	1168
	1169
[51]	1170	; -----------------------------------------------------------------------------
	1171	; eComStation PHASE1 CHECK
	1172	; -----------------------------------------------------------------------------
	1173
	1174	;
[67]	1175	; BOOKMARK: Check for OS/2 being installed
	1176	; Here we check if OS/2 is being installed.
[51]	1177	; If so, we forgo the menu and directly boot it.
	1178	;
	1179
	1180	; If the first byte of the name of the Install Volume is not 0
[49]	1181	; then we potentially have a phase1 boot.
[67]	1182	test byte ptr [OS2_InstallVolume],0ffh
[49]	1183	; Nope, so continue normally.
	1184	jz MBR_Main_ContinueBoot
[36]	1185
[49]	1186	; Setup phase1.
	1187	; It is still possible that a name was set for the
	1188	; Install Volume that does not exist.
	1189	; In that case CY will be clear and AL=0FFh.
	1190	call PART_SetupPhase1
	1191	; Oops, Install Volume not found, continue normally.
	1192	jnc MBR_Main_ContinueBoot
[30]	1193
	1194
[51]	1195	;
[49]	1196	; == Install Volume Found ==
[51]	1197	;
[30]	1198
[51]	1199
	1200	;!
	1201	;! DEBUG_BLOCK
	1202	;! Dump various tables.
	1203	;! Uncomment below to activate.
	1204	;!
	1205	IFDEF AUX_DEBUG
	1206	;~ call DEBUG_DumpIPT
	1207	;~ call DEBUG_DumpPartitionPointers
	1208	;~ call DEBUG_DumpPartitionXref
	1209	;~ call DEBUG_DumpNewPartTable
	1210	;~ call DEBUG_DumpDriveLetters
	1211	ENDIF
	1212
	1213
[67]	1214	; BOOKMARK: Scan for Partitions (Only if OS/2 install going on)
[51]	1215	; Because one or more partitions are possibly added, the
	1216	; PartitionXref table is not 'in sync' and could cause the
	1217	; wrong system to be automatically booted.
	1218	; So we rescan all partitions causing the PartitionXref
	1219	; table to be filled with correct values so the auto-boot
	1220	; from the new partition will work correctly.
[49]	1221	call PARTSCAN_ScanForPartitions
[30]	1222
	1223
[51]	1224	;!
	1225	;! DEBUG_BLOCK
	1226	;! Dump various tables.
	1227	;! Uncomment below to activate.
	1228	;!
	1229	IFDEF AUX_DEBUG
[50]	1230	;~ call DEBUG_DumpIPT
[49]	1231	;~ call DEBUG_DumpPartitionPointers
[50]	1232	;~ call DEBUG_DumpPartitionXref
[49]	1233	;~ call DEBUG_DumpNewPartTable
[51]	1234	;~ call DEBUG_DumpDriveLetters
	1235	ENDIF
[30]	1236
[51]	1237	; Setup automatic boot to forgo the Menu.
	1238	; PART_SetupPhase1 has filled in the other variables.
	1239	mov byte ptr [CFG_AutomaticBoot],1
[30]	1240
[51]	1241	;
	1242	; At this point the AiR-BOOT configuration has been altered
	1243	; to automatically boot the newly installed system without
	1244	; displaying the menu.
	1245	; Code further down the road will take care of that.
	1246	;
[49]	1247	jmp MBR_Main_ContinueBoot
[30]	1248
	1249
[49]	1250
	1251
[51]	1252	;
	1253	; Wether a new system is being installed or not,
	1254	; booting continues here.
	1255	;
	1256	MBR_Main_ContinueBoot:
[49]	1257
[51]	1258	;
	1259	; Inform user how to switch between post-screen and menu
	1260	; by putting this info on the screen.
	1261	;
[37]	1262	xor si,si
	1263	call MBR_TeletypeNL
	1264	xor si,si
	1265	call MBR_TeletypeNL
	1266	call MBR_TeletypeSyncPos
	1267	xor si,si
	1268	call MBR_TeletypeNL
	1269	call MBR_TeletypeNL
	1270	mov si, offset ShowMenu
	1271	call MBR_TeletypeBold
[30]	1272
	1273
[51]	1274	;
	1275	; Debug stop.
	1276	;
[30]	1277
[37]	1278	;
	1279	; ####################### WAIT FOR KEY ########################
	1280	;
[30]	1281
[37]	1282	; Wait for key so we can see debug log if ab-menu hangs.
[49]	1283	;~ xor ax, ax
	1284	;~ int 16h
[37]	1285	;call SOUND_Beep
[30]	1286
	1287
[51]	1288	; Copy BIOS POST to Second Page
[37]	1289	mov ax, VideoIO_Page1
[51]	1290	call VideoIO_BackUpTo
[30]	1291
[37]	1292	;call SOUND_Beep
[30]	1293
	1294
[52]	1295	; BOOKMARK: Save Configuration
[37]	1296	; Save configuration so phase1 boot-through is disabled
	1297	; on next boot.
[67]	1298	mov byte ptr [OS2_InstallVolume], 0
[37]	1299	call DriveIO_SaveConfiguration
[31]	1300
	1301
	1302
[37]	1303	;
[51]	1304	; See if setup needs to be entered.
[37]	1305	;
	1306	MBR_Main_ReEnterSetup:
	1307	call SETUP_CheckEnterSETUP
[7]	1308
[51]	1309	;
	1310	; Do some post processing.
	1311	;
[52]	1312	; BOOKMARK: After Crap
[37]	1313	call AFTERCRAP_Main
[30]	1314
[37]	1315	; [Linux support removed since v1.02]
	1316	; Now get FAT16-Linux Kernel Partition, If requested
	1317	;cmp [CFG_LinuxKrnlPartition], 0FFh
	1318	;je MBR_Main_NoLinuxKrnlPartition
	1319	;call LINUX_InitFAT16access
	1320	;MBR_Main_NoLinuxKrnlPartition:
[7]	1321
[30]	1322
[46]	1323
[37]	1324	MBR_Main_ReEnterBootMenuPre:
	1325	; SetUp PartitionPointers for BootMenu (filter non-bootable)
	1326	call PART_CalculateMenuPartPointers
[7]	1327
[37]	1328	; ...and count that one...
[46]	1329	cmp byte ptr [PartitionPointerCount], 0
[37]	1330	jne MBR_Main_SomethingBootAble
	1331	mov si, offset TXT_NoBootAble
	1332	call MBR_Teletype
	1333	jmp MBR_HaltSystem
[30]	1334
[37]	1335	MBR_Main_SomethingBootAble:
	1336	; FixUp Values, define Timed Setup booting, etc.
	1337	call PART_FixUpDefaultPartitionValues
[7]	1338
[30]	1339
	1340
[37]	1341	; -------------------------------------------------- BOOT-MENU
	1342	MBR_Main_ReEnterBootMenu:
	1343	call BOOTMENU_ResetMenuVars ; reset has to be done
[46]	1344	test byte ptr [CFG_AutomaticBoot], 1
[37]	1345	jz MBR_Main_NoAutomaticBooting
[49]	1346
	1347
[37]	1348	; ------------------------------------------ AUTOMATIC BOOTING
	1349	; Select automatic partition, disable automatic booting for
	1350	; next time and boot system...
[46]	1351	mov byte ptr [CFG_AutomaticBoot], 0
[37]	1352	call PASSWORD_AskSystemPwd
	1353	mov al, Menu_EntryAutomatic
[30]	1354
[37]	1355	;mov al, 2
[30]	1356
[37]	1357	mov Menu_EntrySelected, al ; zero based
	1358	jmp MBR_Main_NoBootMenu
[7]	1359
[30]	1360
[49]	1361	MBR_Main_NoAutomaticBooting:
	1362
[37]	1363	;call SOUND_Beep
[30]	1364
[46]	1365	test byte ptr [CFG_BootMenuActive], 0FFh
[37]	1366	jnz MBR_Main_GotBootMenu
	1367	; ----------------------------------------------- NO BOOT-MENU
	1368	; Select default partition and boot system...
	1369	call PASSWORD_AskSystemPwd
[30]	1370
[37]	1371	;call VideoIO_DBG_WriteString2
[30]	1372
[37]	1373	mov al, Menu_EntryDefault
	1374	;mov al,0 ; zero based
	1375	mov Menu_EntrySelected, al
	1376	jmp MBR_Main_NoBootMenu
[7]	1377
[37]	1378	MBR_Main_GotBootMenu:
	1379	; ------------------------------------------ BOOT-MENU VISUALS
[51]	1380
	1381
	1382	IFDEF FX_ENABLED
[37]	1383	call FX_StartScreen
[51]	1384	ENDIF
[30]	1385
[52]	1386	; BOOKMARK: Build Main Menu
[37]	1387	call BOOTMENU_BuildBackground
	1388	call BOOTMENU_BuildMain
[51]	1389
	1390	IFDEF FX_ENABLED
[37]	1391	call FX_EndScreenRight
[51]	1392	ENDIF
	1393
[37]	1394	call PASSWORD_AskSystemPwd
	1395	call BOOTMENU_ResetTimedBoot
[30]	1396
[52]	1397	; BOOKMARK: Display Main Menu
[37]	1398	call BOOTMENU_Execute
[30]	1399
[37]	1400	jc MBR_Main_ReEnterSetup
	1401	call BOOTMENU_SetVarsAfterMenu
[30]	1402
[37]	1403	; ---------------------------------------------------- BOOTING
	1404	MBR_Main_NoBootMenu:
[51]	1405
	1406	IFDEF FX_ENABLED
[37]	1407	call FX_StartScreen
[51]	1408	ENDIF
	1409
[52]	1410	; BOOKMARK: Display bye-screen and start selected partition
[37]	1411	call BOOTMENU_BuildGoodBye
[51]	1412
	1413	IFDEF FX_ENABLED
[37]	1414	call FX_EndScreenRight
[51]	1415	ENDIF
	1416
[37]	1417	call PASSWORD_AskChangeBootPwd
[7]	1418
[37]	1419	call ANTIVIR_SaveBackUpMBR
[7]	1420
[49]	1421	; Preload the selected menu-entry
[67]	1422	; However, this value will be wrong if OS/2 phase1 is
[49]	1423	; active and the installation partition is newly created.
	1424	; See below for the adjustment.
	1425	mov dl, byte ptr [Menu_EntrySelected]
	1426
[51]	1427
	1428	;
	1429	; Prepare to start the partition.
	1430	;
[49]	1431	jmp MBR_Main_StartPartition
	1432
	1433
	1434
[51]	1435	; -----------------------------------------------------------------------------
	1436	; START PARTITION
	1437	; -----------------------------------------------------------------------------
	1438
[49]	1439	MBR_Main_StartPartition:
	1440
[51]	1441	IFDEF AUX_DEBUG
[49]	1442	;~ call DEBUG_DumpIPT
	1443	;~ call DEBUG_DumpPartitionPointers
[50]	1444	;~ call DEBUG_DumpPartitionXref
[49]	1445	;~ call DEBUG_DumpNewPartTable
[51]	1446	ENDIF
[49]	1447
	1448
[37]	1449	; -------------------------------------------- START PARTITION
[51]	1450	; THIS DOES NOT RETURN !
[37]	1451	call PART_StartPartition
[30]	1452
	1453
[31]	1454
[51]	1455
[30]	1456	;
[51]	1457	; This entry-point restarts AiR-BOOT almost from scratch.
	1458	; It skips the movement of the MBR but otherwise it is a functional restart.
	1459	; The old BIOS SS:SP where the registers on entry are stored is passed along.
[52]	1460	; This entry-point is used for debugging purposes.
[51]	1461	;
[52]	1462	; BOOKMARK: AiR-BOOT Restart (used for debugging)
[51]	1463	AirbootRestart:
[79]	1464	mov bx, [OldSP] ; Old SP when BIOS transferred control to AB
	1465	mov cx, [OldSS] ; Old SS when BIOS transferred control to AB
	1466	xor dh, dh ; Head 0
	1467	mov dl, [BIOS_BootDisk] ; Disk AirBoot was loaded from
[51]	1468	jmp MBR_RealStart
	1469
	1470
	1471	;
	1472	; This entry-point displays a popup that the system is halted
	1473	; and then halts the system.
	1474	; It is entered on severe error conditions.
	1475	;
[52]	1476	; BOOKMARK: Halt System
[51]	1477	HaltSystem:
	1478	call VideoIO_ClearScreen
	1479	mov ax,0ababh
	1480	mov cx, 0C04h
	1481	mov si, offset SystemHalted
	1482	call SETUP_ShowErrorBox
	1483	; Halt the system.
	1484	jmp MBR_HaltSystem
	1485
	1486
	1487
	1488
	1489
	1490
	1491	;
[52]	1492	; The following section includes various assembler modules
	1493	; at the source level. These contain functionality for a
	1494	; multitude of categories like disk-access, video-io, lvm,
	1495	; debugging, etc. Later versions of AiR-BOOT will use such
	1496	; modules at the object-file level so they can be shared
	1497	; more easily.
[51]	1498	;
	1499
	1500
	1501	; -----------------------------------------------------------------------------
	1502	; INCLUDED FILE SECTION
	1503	; -----------------------------------------------------------------------------
	1504
[52]	1505	; BOOKMARK: Include Section
	1506
[51]	1507	;
[30]	1508	; Include other code-modules here.
	1509	;
[51]	1510
[30]	1511	b_std_txt:
[60]	1512	include regular/std_text.asm ; Standard (non-translateable text)
[30]	1513	size_std_txt = $-b_std_txt
	1514
	1515	b_driveio:
[60]	1516	include regular/driveio.asm ; Drive I/O, Config Load/Save
[30]	1517	size_driveio = $-b_driveio
	1518
[43]	1519	b_lvm:
[60]	1520	include special/lvm.asm ; LVM-specific code
[43]	1521	size_lvm = $-b_lvm
	1522
[30]	1523	b_videoio:
[60]	1524	include regular/videoio.asm ; Video I/O
[30]	1525	size_videoio = $-b_videoio
	1526
	1527	b_timer:
[60]	1528	include regular/timer.asm ; Timer
[30]	1529	size_timer = $-b_timer
	1530
	1531	b_partmain:
[60]	1532	include regular/partmain.asm ; Regular Partition Routines
[30]	1533	size_partmain = $-b_partmain
	1534
	1535	b_partscan:
[60]	1536	include regular/partscan.asm ; Partition Scanning
[30]	1537	size_partscan = $-b_partscan
	1538
	1539	b_bootmenu:
[60]	1540	include regular/bootmenu.asm ; Boot-Menu
[30]	1541	size_bootmenu = $-b_bootmenu
	1542
	1543	b_password:
[60]	1544	include regular/password.asm ; Password related
[30]	1545	size_password = $-b_password
	1546
	1547	b_other:
[60]	1548	include regular/other.asm ; Other Routines
[30]	1549	size_other = $-b_other
[7]	1550
[30]	1551	b_main:
[60]	1552	include setup/main.asm ; The whole AiR-BOOT SETUP
[30]	1553	size_main = $-b_main
	1554
	1555	b_math:
[60]	1556	include regular/math.asm ; Math functions (like 32-bit multiply)
[30]	1557	size_math = $-b_math
	1558
	1559	b_txtother:
[60]	1560	include text/txtother.asm ; All translateable Text-Strings
[30]	1561	size_txtother = $-b_txtother
	1562
	1563	b_txtmenus:
[60]	1564	include text/txtmenus.asm ; All translateable Menu-text
[30]	1565	size_txtmenus = $-b_txtmenus
	1566
	1567	b_charset:
[60]	1568	include text/charset.asm ; Special Video Charsets (if needed)
[30]	1569	size_charset = $-b_charset
	1570
[36]	1571	b_conv:
[60]	1572	include regular/conv.asm ; Various conversion routines
[36]	1573	size_conv = $-b_conv
[30]	1574
	1575	b_virus:
[60]	1576	include special/virus.asm ; Virus Detection / Anti-Virus
[30]	1577	size_virus = $-b_virus
[51]	1578
[29]	1579	; [Linux support removed since v1.02]
[60]	1580	;include special/fat16.asm ; FAT-16 Support
	1581	;include special/linux.asm ; Linux Kernel Support
[51]	1582
[30]	1583	b_billsuxx:
[60]	1584	include special/f00k/billsuxx.asm ; Extended Partition - Microsoft-Hack
[30]	1585	size_billsuxx = $-b_billsuxx
	1586
	1587	b_sound:
[60]	1588	include special/sound.asm ; Sound
[30]	1589	size_sound = $-b_sound
	1590
	1591	b_apm:
[60]	1592	include special/apm.asm ; Power Managment Support
[30]	1593	size_apm = $-b_apm
	1594
[51]	1595
	1596
	1597	;
	1598	; Cyrillic support.
	1599	;
	1600	IFDEF TXT_IncludeCyrillic
	1601	b_ccharset:
[60]	1602	include special/charset.asm ; Charset Support (e.g. Cyrillic)
[51]	1603	size_ccharset = $-b_ccharset
	1604	ENDIF
	1605
	1606	; Various debugging routines, uses AUXIO and CONV
	1607	IFDEF AUX_DEBUG
	1608	b_debug:
[60]	1609	include regular/debug.asm ; Debug module
[51]	1610	size_debug = $-b_debug
	1611	b_auxio:
[60]	1612	include regular/auxio.asm ; Com-port support for debugging
[51]	1613	size_auxio = $-b_auxio
	1614	ENDIF
	1615
	1616	;
	1617	; We only include this if FX_ENABLED is defined.
	1618	; FX is disabled when debugging to have more room for debug-code.
	1619	; The module compiles to 50eh = 1294 bytes, so that is a lot.
	1620	;
	1621	IFDEF FX_ENABLED
[30]	1622	b_fx:
[60]	1623	include special/fx.asm ; l33t Cooper-Bars/Scrolling <bg>
[30]	1624	size_fx = $-b_fx
[51]	1625	ENDIF
[30]	1626
	1627
[51]	1628	;
	1629	; End of code marker.
	1630	;
[52]	1631	; BOOKMARK: END OF CODE
[51]	1632	db 'BABE'
	1633	db 'FACE'
[30]	1634
[47]	1635
[51]	1636	; -----------------------------------------------------------------------------
	1637	; END OF CODE
	1638	; -----------------------------------------------------------------------------
	1639	code_end:
	1640
	1641
	1642
	1643
	1644
	1645
	1646
	1647
	1648
	1649
	1650	; -----------------------------------------------------------------------------
	1651	; BLDLEVEL INFORMATION
	1652	; -----------------------------------------------------------------------------
	1653
[52]	1654	; BOOKMARK: BLDLEVEL Information
[51]	1655	ORIGIN 068A0h
	1656
	1657	;
	1658	; The space between this offset and code_end is the space
	1659	; available for code.
	1660	;
	1661	zzz_code_space = $ - code_end
	1662
	1663
[46]	1664	bld_level:
[43]	1665	;
[46]	1666	; Here we insert the OS/2 BLDLEVEL Information.
	1667	; It is composed of the AiR-BOOT version-info and other
[51]	1668	; information. It is unique for each release of AiR-BOOT.
[46]	1669	;
[51]	1670
	1671	;
[47]	1672	; ?? When AUX_DEBUG is enabled and the above org is active,
	1673	; the BLDLEVEL gets corrupted eventhough it gets inserted here
	1674	; explicitly. The effect is almost like an 'OR' or a merge
	1675	; with the already generated FX code.
	1676	; Tasm and JWasm produce different results.
	1677	; ??
	1678	;
[46]	1679	InsertBuildLevel
	1680
[47]	1681
[30]	1682
[7]	1683
	1684
[51]	1685	;==============================================================================
	1686	; Sector 53
	1687	;==============================================================================
	1688
[45]	1689	;
[51]	1690	; From here on, the layout of the image consists of:
	1691	; - AiR-BOOT Protection Image
	1692	; - AiR-BOOT Configuration
	1693	; - DriveLetters
	1694	; - Install Volume
	1695	; - Floppy/CDROM/BIOS BOOT ENTRIES
	1696	; - Internal Partition Table (IPT)
	1697	; - Hidden Partition Table (HPT)
	1698	; - MBR Backup
[45]	1699	;
[7]	1700
[37]	1701	;
[51]	1702	; After that, the BSS follows with several runtime
	1703	; variables and structures.
	1704	; The BSS is not part of the image on disk of course.
	1705	;
	1706
	1707	; -----------------------------------------------------------------------------
	1708	; PROTECTION IMAGE
	1709	; -----------------------------------------------------------------------------
	1710
	1711	;
[52]	1712	; This is the AiR-BOOT MBR Protection Image.
[46]	1713	; The stuff generated here gets overwritten when the
[51]	1714	; MBR_PROT module, which is assembled separately,
	1715	; gets binary merged.
[37]	1716	; So you won't find the string below in the generated binary.
	1717	;
[52]	1718	; BOOKMARK: AiR-BOOT MBR Protection Image
[51]	1719	ORIGIN 06900h
[46]	1720
	1721
[51]	1722
	1723
[46]	1724	;
[51]	1725	; Hardcoded to 768 bytes (MBR_PROT.ASM)
[46]	1726	; The string below is searched for by the FIXCODE helper and must be
[51]	1727	; page (256 bytes) aligned.
[46]	1728	;
[51]	1729	; It seems to be possible to shrink the protection-image to 768 bytes.
	1730	; That gives us an additional 256 bytes of code-space.
	1731	; MBR-PROT.ASM,FIXCODE.C,PARTMAIN.ASM and AIR-BOOT.ASM need to be adjusted for that.
	1732	; Also the granularity needs to change from 512 bytes to 256 bytes since
	1733	; 6900h is not a 512-byte boundary.
	1734	;
	1735	; 20120908 - Done.
	1736	;
[37]	1737	MBR_Protection db 'AiR-BOOT MBR-Protection Image'
	1738
[43]	1739	; Just fill.
[51]	1740	;~ db 1024-($-MBR_Protection) dup('M')
	1741	db 768-($-MBR_Protection) dup('M')
[37]	1742
	1743
[51]	1744
	1745
	1746
	1747
	1748
[31]	1749	;==============================================================================
[51]	1750	; Sector 55
	1751	;==============================================================================
	1752	; -----------------------------------------------------------------------------
	1753	; AiR-BOOT CONFIGURATION
	1754	; -----------------------------------------------------------------------------
[30]	1755
[37]	1756	;
	1757	; This section contains the AiR-BOOT configuration.
	1758	; Note that it has a version that should be updated
	1759	; when stuff is added.
	1760	; Also add stuff to the end so that offsets of other
	1761	; variables remain vaild.
	1762	;
[52]	1763	; BOOKMARK: AiR-BOOT Configuration Sector
[45]	1764	ORIGIN 06C00h
[30]	1765
[37]	1766	Configuration:
[69]	1767	; This is the signature for the AiR-BOOT Configuration.
	1768	; Note that this configuration section, like the code section,
	1769	; is CRC protected. This means that poking values in these
	1770	; sections on the disk will invalidate AiR-BOOT and cause it
	1771	; to halt. This is a protection method against other software
	1772	; modifying stuff in track 0.
	1773	db 'AiRCFG-TABLE',0adh
[55]	1774	db 01h, 10h, 'U' ; "Compressed" ID String
[37]	1775	; Version 1.02 was for code 1.06, 1.03 was internal
	1776	; and 1.04,1.05 and 1.06 do not exist.
[46]	1777	;
	1778	; 1.07 was used with AB v1.07 and introduced the phase1
	1779	; system-name. For the rest it is compatible with v1.02.
	1780	;
	1781	; 1.0.8 is introduced with AB v1.0.8 and indicates the movement
	1782	; of several components and the packing of the hideparttable.
	1783	; The core configuration has not changed but the generated
	1784	; configuration has. The v1.0.8 installer handles upgrading.
	1785	;
[54]	1786	; It has been decided that uneven minor numbers will be
	1787	; test-versions. Therefore v1.0.8 has been bumbed to v1.1.0.
[60]	1788	;
[37]	1789	; It is not required for the config to have the
	1790	; same version as the code, so in the future
	1791	; the code version might be higher than the
	1792	; config version if there are no changes to the latter.
[46]	1793	;
[7]	1794
[37]	1795	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
	1796	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
[7]	1797
[37]	1798	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
[7]	1799
[37]	1800	CFG_Partitions db 0 ; Count of partitions in IPT
[51]	1801	CFG_MiscFlags db 1 ; Miscellaneous Flags (See EQUates)
[37]	1802	CFG_PartDefault db 0 ; Default-Partition (Base=0)
[7]	1803
[37]	1804	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
	1805	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
	1806	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
	1807	CFG_TimedDelay dw 123 ; Timed Boot - Delay
	1808	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
	1809	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
	1810	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
	1811	CFG_IncludeFloppy db 1 ; Include Floppy Drives in Boot-Menu
	1812	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
[7]	1813	; v0.29+ -> 2 - Detailed Bootmenu
[37]	1814	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
	1815	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
	1816	CFG_PasswordSystem db 0 ; Ask Password when booting System
	1817	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
	1818	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
	1819	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
	1820	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
	1821	CFG_DetectVirus db 0 ; Detect Virus ?
	1822	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
	1823	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
	1824	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
	1825	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
	1826	dw 07A53h
	1827	dw 0E797h
	1828	dw 0A896h
	1829	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
	1830	dw 07A53h
	1831	dw 0E797h
	1832	dw 0A896h
	1833	db 0 ; Rude-Protection - Removed since v0.28b
	1834	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
	1835	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
	1836	; 0 - Do Nothing
	1837	; 1 - Reset Time
	1838	; 2 - Stop Time
	1839	CFG_MakeSound db 0 ; Should be clear ;)
	1840	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
[51]	1841	CFG_ResumeBIOSbootSeq db 1 ; If BIOS Boot Sequence should be resumed
[37]	1842	; 0 - Disabled
	1843	; 1 - CD-ROM
	1844	; 2 - Network
	1845	; 3 - ZIP/LS120
	1846	CFG_CooperBars db 0 ; If Cooper Bars should be shown
	1847	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
	1848	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
	1849	; FFh -> Disabled
	1850	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
	1851	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
	1852	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
	1853	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
	1854	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
	1855	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
	1856	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
[7]	1857
[30]	1858
	1859	;
	1860	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1861	;
	1862
[45]	1863	;
	1864	; Drive Letters.
	1865	;
[52]	1866	; BOOKMARK: Stored Drive Letters
[45]	1867	ORIGIN 06CB0h
[30]	1868
	1869
[51]	1870	; -----------------------------------------------------------------------------
	1871	; DRIVE LETTERS
	1872	; -----------------------------------------------------------------------------
	1873
[45]	1874	;
	1875	; Moved here to make room for packed hiddenparttable.
[71]	1876	; This gets filled with drive-letters that are assigned using the dl-feature.
[45]	1877	;
	1878	DriveLetters db LocIPT_MaxPartitions dup (0)
	1879	; Format is:
	1880	;============
	1881	; Drive-Letter : BYTE (80h-C:, 81h-D:)
	1882	; --------------------> 1 Byte * 45
[30]	1883
[51]	1884
	1885
	1886	; -----------------------------------------------------------------------------
	1887	; INSTALL VOLUME
	1888	; -----------------------------------------------------------------------------
	1889
[45]	1890	;
[37]	1891	; Allways have the name of the installation volume
	1892	; at this offset.
	1893	; So future config changes will not break auto-install.
[45]	1894	;
[67]	1895	; BOOKMARK: Name of OS/2 Installation Volume
[45]	1896	ORIGIN 06D00h
[37]	1897
[67]	1898	; SET(A)BOOT stores the volume name of the OS/2 system being installed here.
[31]	1899	; It is truncated to 11 chars because AiR-BOOT currently does not support
	1900	; longer labelnames. The name is also capitalized.
[67]	1901	;OS2_InstallVolume db 12 dup (0)
	1902	;OS2_InstallVolume db 'HIGHLOG' ,0
	1903	;OS2_InstallVolume db 'ECS-MIDDLE',0,0
	1904	;OS2_InstallVolume db 'ECS-HIGH',0,0,0,0
	1905	;OS2_InstallVolume db 'ECS-HIGH',0,'NO',0
	1906	;OS2_InstallVolume db 'KANWEG2',0
	1907	OS2_InstallVolume db 0,'NOPHASEONE' ,0
[30]	1908
[37]	1909	;
	1910	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1911	;
	1912
[51]	1913
	1914	; -----------------------------------------------------------------------------
	1915	; FLOPPY/CDROM/BIOS BOOT ENTRIES
	1916	; -----------------------------------------------------------------------------
	1917
[37]	1918	;
	1919	; 06DABh - 06C00h = 01ABh = 427 bytes.
	1920	; Entries allocated down from 06E00 boundary.
	1921	;
[52]	1922	; BOOKMARK: Floppy/CD-ROM/BIOS Boot Entries
[46]	1923	ORIGIN 06DABh ; 427 Boundry
[37]	1924
	1925	; (432 - 5 = 427)
	1926	AutoDrvLetter db 0
	1927	AutoDrvLetterSerial dd 0
	1928
	1929	; This entry is also 34 bytes long (466 - 34 = 432)
	1930	BIOScontIPTentry:
	1931	db 0, 0, 0, 0, ' '
	1932	db 0, 0FEh, Flags_Bootable
	1933	dw 0 ; No Checksum :)
	1934	db 0, 1, 0
	1935	db 0, 1, 0 ; Location of Partition/Boot Record
	1936	dd 0, 0
	1937
[7]	1938	; VIR variables are for the AiR-BOOT Anti Virus Code
	1939	; Most of them are backups of Interrupt Points, so we can check, if a
	1940	; stealth virus is on-line, we can intercept its call.
	1941	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
[46]	1942	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the
	1943	; system from working, so the user has to press reset.
	1944	; That's saver than a Reboot.
[7]	1945	;
	1946	; If a virus is found on the partition to boot, the system will ONLY halt,
	1947	; nothing more, because we can not remove it. The user shall do it :)
	1948	; Those viruses are detected via a real nasty method...Checksum-Checking of the
	1949	; boot-record, which is to be executed. If it does not match the one in our
	1950	; internal partition table, we will stop. You may however switch this detection
	1951	; off or just reset it by switching 'VIBR Detection'.
	1952
[37]	1953	; 478 - 12 = 466 ; 466 Sub-Part
	1954	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
	1955	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
	1956	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
[30]	1957
[37]	1958	; 478 Boundry (512-34)
	1959	; This entry is also 34 bytes long
	1960	FloppyIPTentry db 0, 0, 0, 0, 'FloppyDrive'
	1961	db 0, 0FFh, Flags_Bootable
	1962	dw 0 ; No Checksum :)
	1963	db 0, 1, 0
	1964	db 0, 1, 0 ; Location of Partition/Boot Record
	1965	dd 0, 0
[30]	1966
	1967
[51]	1968
	1969	; -----------------------------------------------------------------------------
	1970	; INTERNAL PARTITION TABLE (IPT)
	1971	; -----------------------------------------------------------------------------
	1972
[45]	1973	;
	1974	; AiR-BOOT Internal Partition Table (IPT)
	1975	;
[52]	1976	; BOOKMARK: Internal Partition Table
[45]	1977	ORIGIN % (image_size - 0a00h - (image_size - image_size_60secs))
[30]	1978
	1979
[45]	1980	;
	1981	; Rousseau: This is the start of the AiR-BOOT IPT
	1982	;
	1983	PartitionTable db (LocIPT_MaxPartitions * LocIPT_LenOfIPT) dup (0)
	1984	; no-partitions detected... :]
[7]	1985	; db 1, 0, 0, 0, 'Harddisc 1'
	1986	; db 0, 0FFh, Flags_BootAble
	1987	; dw 0 ; No Checksum :)
	1988	; db 0, 0, 1
[46]	1989	; db 0, 0, 1 ; Location of Partition/Boot Record
[7]	1990	; dd 0, 0
	1991
[37]	1992	; Format is:
	1993	;============
	1994	; SerialNumber * 4
	1995	; PartitionName * 11
	1996	; Drive * 1
	1997	; SystemID * 1 (means the partition type)
	1998	; Flags * 1
	1999	; Checksum * 2 (for virus checking)
	2000	; LocationBegin * 3 (where the partition begins)
	2001	; LocationPartTab * 3 (where the partition table is)
	2002	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
	2003	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
	2004	; --------------------> 34 Bytes (total maximum partition-entries = 30)
[7]	2005
[30]	2006
[37]	2007
	2008	; No need to check overlap here because this string will
	2009	; be overwritten if the maximum partition count is reached.
	2010	; So this is not a critical boundary.
[45]	2011	ORG (image_size - 600h - (image_size - image_size_60secs) / 2 - 10)
[37]	2012
	2013	db 'AiRBOOTPAR' ; 1K internal partition table
[30]	2014
	2015
	2016
[51]	2017	; -----------------------------------------------------------------------------
	2018	; HIDDEN PARTITION TABLE (HPT)
	2019	; -----------------------------------------------------------------------------
[30]	2020
[45]	2021	;
	2022	; Hidden Partition Table (6-bit packed as of v1.0.8)
	2023	;
[52]	2024	; BOOKMARK: Hidden Partition Table (packed)
[45]	2025	ORIGIN % (image_size - 600h - (image_size - image_size_60secs) / 2)
[30]	2026
[38]	2027	HidePartitionTable db (LocIPT_MaxPartitions * LocHPT_LenOfHPT) dup (0FFh)
[37]	2028	; Format is:
	2029	;============
	2030	; PartitionPtr : BYTE * 30
[38]	2031	; --------------------> 30 Bytes * 45
[30]	2032
[37]	2033	;
[45]	2034	; Driveletters were here.
	2035	; Moved down to make room for packed hideparttable.
	2036	;
[30]	2037
[37]	2038
[45]	2039	;
	2040	; End of hidden partition table.
	2041	; Check overlap here for security reasons.
	2042	;
	2043	ORIGIN % (image_size - 200h - 5)
[30]	2044
[45]	2045	; 79fa - end of packed hide table
	2046	db 'ABHID' ; 1K internal Hide-partition table
[30]	2047
	2048
	2049
	2050
[51]	2051	;==============================================================================
	2052	; Sector 62
	2053	;==============================================================================
	2054	; -----------------------------------------------------------------------------
	2055	; MBR BACKUP
	2056	; -----------------------------------------------------------------------------
[37]	2057
[45]	2058	;
	2059	; AiR-BOOT MBR Backup.
	2060	;
[52]	2061	; BOOKMARK: MBR Backup
[45]	2062	ORIGIN % (image_size - 200h)
[37]	2063
[31]	2064
[46]	2065	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp',\
	2066	' - Just to fill this sector with something',0
[37]	2067	AirBootRocks db 'AiR-BOOT Rocks!',0
[7]	2068
[45]	2069	db (512 - ($-MBR_BackUpMBR) - 2) dup('M')
[36]	2070
[45]	2071	; End of Image signature.
	2072	;
	2073	ORIGIN % (image_size - 2)
	2074	dw 0BABEh
[30]	2075
	2076
[45]	2077	;
	2078	; End of Image.
	2079	;
	2080	ORIGIN % (image_size)
[30]	2081
	2082
[51]	2083
[30]	2084	;
[51]	2085	; Terminate LDRIMAGE segment.
[30]	2086	;
[51]	2087	IFDEF SEGMENTED
[43]	2088	LDRIMAGE ENDS
[51]	2089	ENDIF
[30]	2090
[37]	2091
[51]	2092
	2093
	2094
	2095
	2096
	2097	;##############################################################################
	2098	; BSS SEGMENT
	2099	;##############################################################################
	2100
[52]	2101	; BOOKMARK: BSS Segment
[51]	2102
[30]	2103	;
[51]	2104	; Open BSS segment.
[30]	2105	;
[51]	2106	IFDEF SEGMENTED
[37]	2107	VOLATILE SEGMENT USE16 PUBLIC 'BSS'
	2108	ENDIF
	2109
[46]	2110
	2111
[30]	2112	sobss:
[31]	2113	;------------------------------------------------------------------------------
[46]	2114
[37]	2115	;
[46]	2116	; Removed ORG for BSS data to be more compatible
[38]	2117	; with segment-concatenated layout.
[37]	2118	;
[42]	2119	; What happens before this space ??
	2120	; If org 0 corruption occurs.
[46]	2121	;
	2122
	2123	;
[45]	2124	; Filling hiddenparttable goes out-of-bounds !
[46]	2125	; Fixed with 6-bit packing.
[42]	2126	;
[37]	2127
[46]	2128	;
	2129	; If segmented, offsets are relative to the BSS segment.
	2130	; They are resolved at link-time.
	2131	; If not segmented, offsets are relative to the CODE segment.
	2132	;
	2133	IFDEF SEGMENTED
	2134	ORG 02400h
	2135	ELSE
	2136	ORG 0A000h
	2137	ENDIF
	2138
	2139
[51]	2140	; -----------------------------------------------------------------------------
	2141	; START OF BSS DATA
	2142	; -----------------------------------------------------------------------------
	2143
[7]	2144	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
	2145	BeginOfVariables:
[51]	2146
	2147
	2148	; -----------------------------------------------------------------------------
	2149	; SECTOR BUFFERS
	2150	; -----------------------------------------------------------------------------
[52]	2151	; BOOKMARK: Sector Buffers
[46]	2152	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
[51]	2153	PBRSector db 512 dup (?) ; Temporary Sector for JFS/HPFS writeback
[46]	2154	LVMSector db 512 dup (?) ; Temporary Sector for LVM
	2155	TmpSector db 512 dup (?) ; Temporary Sector
[82]	2156	Scratch db 512 dup (?) ; Scratch buffer
[30]	2157
[51]	2158	; -----------------------------------------------------------------------------
	2159	; NEW PARTITION TABLE
	2160	; -----------------------------------------------------------------------------
[7]	2161	; Everything used to build a new IPT and reference it to the old one
[52]	2162	; BOOKMARK: New Partition Table
[46]	2163	NewPartTable db 1536 dup (?) ; New Partition Table
[43]	2164
[51]	2165
	2166	; -----------------------------------------------------------------------------
	2167	; NEW HIDE PARTITION TABLE
	2168	; -----------------------------------------------------------------------------
[52]	2169	; BOOKMARK: New Hide-Partition Table
[51]	2170	NewHidePartTable db LocIPT_MaxPartitions * LocHPT_LenOfHPT dup (?)
[7]	2171
[51]	2172	;~ even
	2173
	2174	; -----------------------------------------------------------------------------
	2175	; NEW DRIVE LETTERS
	2176	; -----------------------------------------------------------------------------
[52]	2177	; BOOKMARK: Logical Drive-Letters
[51]	2178	NewDriveLetters db LocIPT_MaxPartitions dup (?)
[7]	2179
[51]	2180	;~ even
	2181
	2182	; -----------------------------------------------------------------------------
	2183	; PARTITION SIZE TABLE
	2184	; -----------------------------------------------------------------------------
[46]	2185	; Size-Table (6 bytes per partition)
[52]	2186	; BOOKMARK: Partition Size Table
[51]	2187	PartitionSizeTable db LocIPT_MaxPartitions * 6 dup (?)
[46]	2188
[51]	2189
	2190	; -----------------------------------------------------------------------------
	2191	; PARTITION POINTERS
	2192	; -----------------------------------------------------------------------------
[49]	2193	; Maximum is 52 word entries till now
[52]	2194	; BOOKMARK: Partition Pointers
[46]	2195	PartitionPointers dw 52 dup (?)
	2196
	2197	; Count of total Partition Pointers
	2198	PartitionPointerCount db ?
	2199
[51]	2200	; -----------------------------------------------------------------------------
	2201	; XREF TABLE
	2202	; -----------------------------------------------------------------------------
	2203
[46]	2204	; X-Reference Table (holds new partnr, index is old part nr)
[52]	2205	; BOOKMARK: Xref Table
[51]	2206	PartitionXref db LocIPT_MaxPartitions dup (?)
[46]	2207
[51]	2208	; -----------------------------------------------------------------------------
	2209	; VOLUME LETTERS
	2210	; -----------------------------------------------------------------------------
	2211
[46]	2212	; Volume-Letters
	2213	; 0 - no LVM support
	2214	; 1 - LVM support, but no letter
	2215	; 'C'-'Z' - assigned drive letter
[52]	2216	; BOOKMARK: Volume Drive Letters
[51]	2217	PartitionVolumeLetters db LocIPT_MaxPartitions dup (?)
[46]	2218
	2219
	2220
[51]	2221	; -----------------------------------------------------------------------------
	2222	; MISC VARS AND FLAGS
	2223	; -----------------------------------------------------------------------------
[52]	2224	; BOOKMARK: Misc Vars and Flags
[46]	2225	TotalHarddiscs db ? ; Total harddrives (by POST)
	2226	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
	2227	NewPartitions db ? ; Freshly found partitions
[37]	2228	; Independent of SaveConfiguration
[46]	2229	TooManyPartitions db ? ; Non-zero if too many partitions found
[7]	2230
[46]	2231	VideoIO_Segment dw ? ; Segment for Video I/O
[7]	2232
[46]	2233	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
	2234	ExtendedAbsPosSet db ? ; If Absolute Position set
[7]	2235
[46]	2236	CurPartition_Location dw 4 dup (?) ; Where did current partition come from?
	2237	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
	2238	; (filled out by PreCrap)
	2239	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
[37]	2240	; (for detailed error message)
[7]	2241
[29]	2242	; [Linux support removed since v1.02]
	2243	;GotLinux db ? ; 1-Linux found
[7]	2244
[51]	2245
	2246	; -----------------------------------------------------------------------------
	2247	; MENU RELATED VARS
	2248	; -----------------------------------------------------------------------------
[46]	2249	Menu_EntrySelected db ? ; Which partition we boot this time...
	2250	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
	2251	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
	2252	Menu_TotalParts db ? ; Copy of CFG_BootParts
	2253	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
	2254	Menu_EntryDefault db ? ; Default Entry in filtered View
	2255	Menu_EntryLast db ? ; LastBooted Entry in filtered View
	2256	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
[7]	2257	; - All adjusted to menu locations
	2258
[51]	2259	; -----------------------------------------------------------------------------
	2260	; PARTITION RELATED VARS
	2261	; -----------------------------------------------------------------------------
[46]	2262	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
	2263	PartSetup_ActivePart db ? ; Active Partition
	2264	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
	2265	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
	2266	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
[7]	2267
[51]	2268	; -----------------------------------------------------------------------------
	2269	; TIMER / SETUP RELATED VARS
	2270	; -----------------------------------------------------------------------------
[46]	2271	TimedBootEnable db ? ; Local Enable/Disable for timed boot
	2272	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here;)
	2273	TimedSecondLeft db ? ; How many seconds are left till boom ?
	2274	TimedSecondBack db ? ; To get a modification noticed
	2275	TimedBootUsed db ? ; Timed Boot used for bootup ?
	2276	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
	2277	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
	2278	SETUP_ExitEvent db ? ; Exit Event to end SETUP
	2279	TempPasswordEntry db 17 dup (?)
	2280	SETUP_OldPwd db 17 dup (?)
	2281	SETUP_NewPwd db 17 dup (?)
	2282	SETUP_VerifyPwd db 17 dup (?)
	2283	StartSoundPlayed db ?
	2284	ChangePartNameSave db ? ; Save label after user-edit ?
	2285	SyncLvmLabels db ? ; Sync LVM labels after user-edit ?
[7]	2286
[51]	2287
	2288	; -----------------------------------------------------------------------------
	2289	; FX RELATED VARS
	2290	; -----------------------------------------------------------------------------
[37]	2291	FX_UseCount dw ?
	2292	FX_OverallTimer dw ?
	2293	FX_WideScrollerTimer dw ?
	2294	FX_WideScrollerCurPos dw ?
	2295	FX_WideScrollerSpeed db ?
	2296	FX_WideScrollerSpeedState db ?
	2297	FX_WideScrollerDirection db ?
	2298	FX_WideScrollerAbsDirection db ?
	2299	FX_WideScrollerBounceSpeed db ?
	2300	FX_CooperBarsTimer dw ?
[7]	2301
[51]	2302	; Dynamically Generated Tables - do not need to get initialized with NUL
	2303	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
	2304	FX_CooperState db 7 dup (?)
	2305	FX_SinusPos db 7 dup (?)
	2306	FX_CooperPos dw 7 dup (?)
	2307
	2308
	2309	; -----------------------------------------------------------------------------
	2310	; CHARSET BUFFER
	2311	; -----------------------------------------------------------------------------
	2312	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
	2313
	2314	; -----------------------------------------------------------------------------
	2315	; LVM CRC TABLE
	2316	; -----------------------------------------------------------------------------
	2317	LVM_CRCTable dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
	2318
[46]	2319	;~ ; [Linux support removed since v1.02]
	2320	;~ FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
	2321	;~ FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
	2322	;~ FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
	2323	;~ FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
	2324	;~ FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
	2325	;~ FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
	2326	;~ FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
	2327	;~ FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
	2328	;~ FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
	2329	;~ FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
	2330	;~ LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
	2331	;~ LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
	2332	;~ LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
[7]	2333
	2334
[30]	2335	;
	2336	; Rousseau: added some stuff.
	2337	;
[51]	2338	; -----------------------------------------------------------------------------
	2339	; ECS PHASE1 RELATED
	2340	; -----------------------------------------------------------------------------
[49]	2341	Phase1Active db ?
	2342	OldPartitionCount db ?
[30]	2343
[51]	2344
	2345	; -----------------------------------------------------------------------------
	2346	; DISK PARAMETERS
	2347	; -----------------------------------------------------------------------------
[30]	2348	;EVEN
[37]	2349	HugeDisk db MaxDisks dup(?)
	2350	TrueSecs dd MaxDisks dup(?)
[30]	2351
	2352	; BIOS geometry of the boot-drive
	2353	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
	2354	; If Int13X is supported those values are used, otherwise the legacy values.
[37]	2355	BIOS_Cyls dd MaxDisks dup(?)
	2356	BIOS_Heads dd MaxDisks dup(?)
	2357	BIOS_Secs dd MaxDisks dup(?)
	2358	BIOS_Bytes dw MaxDisks dup(?)
	2359	BIOS_TotalSecs dq MaxDisks dup(?)
[30]	2360
	2361	; LBA geometry of the boot-drive
	2362	; Note that these values are taken from the BPB of a partition boot-record
[37]	2363	LVM_Cyls dd MaxDisks dup(?)
	2364	LVM_Heads dd MaxDisks dup(?)
	2365	LVM_Secs dd MaxDisks dup(?)
	2366	LVM_Bytes dw MaxDisks dup(?)
	2367	LVM_TotalSecs dq MaxDisks dup(?)
[30]	2368
	2369	; OS/2 geometry of the boot-drive
	2370	; Note that these values are taken from the BPB of a partition boot-record
[37]	2371	LOG_Cyls dd MaxDisks dup(?)
	2372	LOG_Heads dd MaxDisks dup(?)
	2373	LOG_Secs dd MaxDisks dup(?)
	2374	LOG_Bytes dw MaxDisks dup(?)
	2375	LOG_TotalSecs dq MaxDisks dup(?)
[30]	2376
[51]	2377	; Get's initialized at startup to: 00000011111111111111111111111100b
	2378	; Meaning A,B not free; C-Z free, rest unused. (right to left)
	2379	; Each partition with an assigned drive-letter clears a bit in this map.
	2380	FreeDriveletterMap dd ?
[30]	2381
[51]	2382	; LBA address of master LVM sector, zero if non-existant
	2383	MasterLVMLBA dd ?
[30]	2384
[51]	2385
	2386	; -----------------------------------------------------------------------------
	2387	; I13X BUFFER
	2388	; -----------------------------------------------------------------------------
[46]	2389	;
[52]	2390	; BOOKMARK: Temporary buffer for 48h INT13X bios call.
[46]	2391	;
[30]	2392
[46]	2393	; Size of the buffer.
	2394	; this param must be filled in.
	2395	; Code inserts it.
	2396	i13xbuf dw 1 dup (?)
[30]	2397
[46]	2398	; The buffer itself.
	2399	db 126 dup(?)
	2400
	2401	; Size of buffer calculated.
	2402	; (excluding the size word at the start).
	2403	i13xbuf_size = $-offset i13xbuf-2
	2404
	2405	; Some debug area.
[89]	2406	dbg_scratch db 512 dup(?)
[44]	2407
[51]	2408
	2409	; End of transient variables.
	2410	EndOfVariables:
	2411
	2412
	2413
	2414
	2415	; -----------------------------------------------------------------------------
	2416	; OLD AND NEW STACKS
	2417	; -----------------------------------------------------------------------------
[52]	2418	; BOOKMARK: Storage for Old and New Stack Pointers
[51]	2419	;
	2420	; These need to be outside the variable section because AiR-BOOT can restart
	2421	; itself in debug-mode. If the OldSP and OldSS would be in the variable area,
	2422	; they would be cleared on AiR-BOOT restart.
	2423	;
	2424
	2425	; The variable section is cleared word-wise, so it could clear one byte extra
	2426	; depending on the alignment and size. This DD prevents the OldSP and OldSS
	2427	; to be partly overwritten by the clearing routine.
	2428	dd ?
	2429
	2430	; SS:SP from before our relocation.
	2431	; The registers values when the BIOS transferred control to us were pushed
	2432	; on this stack.
	2433
	2434	OldSP dw ?
	2435	OldSS dw ?
	2436
	2437	; SS:SP currently in use.
	2438	; They are temporarily dumped here so we can pop the resgisters from
	2439	; the old stack to display them in debug mode.
	2440	CurrentSP dw ?
	2441	CurrentSS dw ?
	2442
	2443
	2444
	2445	;
	2446	; End of BSS segment.
	2447	;
[30]	2448	eobss:
	2449
[51]	2450	;
	2451	; Close BSS segment.
	2452	;
[37]	2453	IFDEF SEGMENTED
[46]	2454	VOLATILE ENDS
[37]	2455	ELSE
[46]	2456	LDRIMAGE ENDS
[37]	2457	ENDIF
[43]	2458
[52]	2459	; BOOKMARK: End of Module
[45]	2460	END AiR_BOOT
[30]	2461

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