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source: trunk/bootcode/air-boot.asm@ 57

Last change on this file since 57 was 57, checked in by Ben Rietbroek, 10 years ago

All source-files lowercased [v1.1.1-testing]

Some standard files like 'COPYING', 'LICENSE', etc. have not been
converted to lower case because they are usually distributed uppercased.

File size: 95.0 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	;
	36	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	;
	42	Include BLDLEVEL.INC
	43
[51]	44	;
	45	; Include some macro's.
	46	; This file contains the ORIGIN macro that is used to detect overlaps.
	47	;
	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	;
[46]	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
[51]	96	;
	97	; If ReleaseCode is not defined, it will produce debug-able code...
	98	; Rousseau: This is currently not functional so don't use it !
	99	; It was used to debug AiR-BOOT as a .COM file.
	100	;
	101	ReleaseCode equ -1
[45]	102
	103
[51]	104	; -----------------------------------------------------------------------------
	105	; AUX
	106	; -----------------------------------------------------------------------------
[45]	107	;
[31]	108	; bits 7-5 = datarate
	109	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
	110	; bits 4-3 = parity
	111	; (00 or 10 = none, 01 = odd, 11 = even)
	112	; bit 2 = stop-bits
	113	; (set = 2 stop-bits, clear = 1 stop-bit)
	114	; bits 1-0 = data-bits
	115	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
	116	;
[30]	117
[31]	118	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
[43]	119	AUX_INIT_PARMS EQU 11100011b
[31]	120
[43]	121	; Com-port for debugging, 0 is disabled
	122	BIOS_COM_PORT EQU 1
	123
[31]	124	; Default word value for BIOS_AuxParms variable
	125	; Note that is has moved since v1.07
[43]	126	BIOS_AUXPARMS_DEFAULT EQU (AUX_INIT_PARMS SHL 8) OR BIOS_COM_PORT
[31]	127
[43]	128
	129
	130
[51]	131	; -----------------------------------------------------------------------------
	132	; LABELS
	133	; -----------------------------------------------------------------------------
	134	; Address labels after code-move
	135	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
	136	BootBasePtr equ 0h ; We put our MBR to this location
	137	BootBaseExec equ BootBasePtr+offset MBR_RealStart
	138	StackSeg equ 07000h ; Put the stack below the code
[7]	139
[31]	140	; Use different addresses depending on whether in pre-boot
[37]	141	; or debug (dos) environment.
[7]	142	IFDEF ReleaseCode
[37]	143	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
	144	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
	145	ELSE
	146	; Rousseau: where does this value come from ?
	147	; Should be CS.
	148	; Rectified in actual code by ignoring this value.
	149	StartBaseSeg equ 03A98h ; Adjust to DOS segment
	150	StartBasePtr equ 00100h ; We are a .COM file, DOS is active
[7]	151	ENDIF
	152
[30]	153
[51]	154
	155	; -----------------------------------------------------------------------------
	156	; VIDEO
	157	; -----------------------------------------------------------------------------
[30]	158	; Video pages, no INT 10h is used for menu-drawing etc.
[7]	159	VideoIO_Page0 equ 0B800h
	160	VideoIO_Page1 equ 0B900h
	161	VideoIO_Page2 equ 0BA00h
	162	VideoIO_Page4 equ 0BC00h
	163	VideoIO_FXSegment equ 0A000h
	164
[30]	165	; Special line-drawing characters
[37]	166	TextChar_WinLineRight equ 0C4h ; 'Ä'
	167	TextChar_WinLineDown equ 0B3h ; '³'
	168	TextChar_WinRep1 equ 0D1h ; 'Ñ'
	169	TextChar_WinRep2 equ 0C5h ; 'Å'
	170	TextChar_WinRep3 equ 0CFh ; 'Ï'
	171	TextChar_WinRep4 equ 0B5h ; 'µ'
	172	TextChar_WinRep5 equ 0C6h ; 'Æ'
	173	TextChar_WinRep6 equ 0D8h ; 'Ø'
[7]	174
[51]	175
	176
	177	; -----------------------------------------------------------------------------
	178	; PARTITION TABLE
	179	; -----------------------------------------------------------------------------
	180	; Offsets for Partition-Entries in MBR/EBRs
[37]	181	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
	182	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
[51]	183	LocBRPT_BeginCHS equ 1 ; Packed CHS value
	184	LocBRPT_BeginHead equ 1 ; Start head, usually < 16
	185	LocBRPT_BeginSector equ 2 ; Start sector, max 63 + cyl high bits
	186	LocBRPT_BeginCylinder equ 3 ; Start cylinder 8+2 bits, max 1023
[37]	187	LocBRPT_SystemID equ 4 ; Type of system using the partition
[51]	188	LocBRPT_EndCHS equ 5 ; Packed CHS value
	189	LocBRPT_EndHead equ 5 ; End head, usually < 16
	190	LocBRPT_EndSector equ 6 ; End sector, max 63 + cyl high bits
	191	LocBRPT_EndCylinder equ 7 ; End cylinder 8+2 bits, max 1023
	192	LocBRPT_RelativeBegin equ 8 ; LBA32 address of partition
	193	LocBRPT_AbsoluteLength equ 12 ; 32-bit length of partition
[7]	194
[51]	195	; Signature relative to start of MBR/EBR
	196	LocBR_Magic equ 510 ; Offset of 0AA55h signature
[7]	197
[51]	198	; -----------------------------------------------------------------------------
	199	; LVM RECORD
	200	; -----------------------------------------------------------------------------
[34]	201	; Used as a quick compare in LVM.ASM
[37]	202	LocLVM_SignatureByte0 equ 02h
[30]	203
[34]	204	; Offsets for LVM Information Sector.
	205	; These are relative to the start of the LVM sector.
[37]	206	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
	207	LocLVM_CRC equ 08h ; CRC is a DWORD
	208	LocLVM_Heads equ 1ch ; Number of heads
	209	LocLVM_Secs equ 20h ; Sectors per Track
	210	LocLVM_DiskName equ 24h ; Name of the disk
	211	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
	212	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
[30]	213
[34]	214	; An LVM info-sector can contain information on max. 4 partitions.
	215	; All 4 entries will be used when there 4 primary partitions defined.
	216	; For logical partitions, the LVM info-sector is located below the start
	217	; of the logical partition and only one LVM entry is used in that logical
	218	; LVM info-sector.
[37]	219	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
[30]	220
[51]	221
	222	; -----------------------------------------------------------------------------
	223	; LVM ENTRY
	224	; -----------------------------------------------------------------------------
[34]	225	; Offsets for LVM entry.
	226	; These are relative to the start of the entry.
[51]	227	LocLVM_VolumeID equ 00h ; DWORD
	228	LocLVM_PartitionID equ 04h ; DWORD
	229	LocLVM_PartitionSize equ 08h ; DWORD
	230	LocLVM_PartitionStart equ 0ch ; DWORD
[37]	231	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
	232	LocLVM_Startable equ 11h ; is Startable (newly installed system)
[51]	233	LocLVM_VolumeLetter equ 12h ; Drive Letter for partition (C-Z or 0)
	234	LocLVM_Unknown equ 13h ; unknown BYTE (can be used ?)
	235	LocLVM_InstallLetter equ 13h ; unknown BYTE (can be used ?)
[37]	236
[34]	237	; Truncated to 11 chars when displayed in menu.
	238	; MiniLVM sets both to the same value.
	239	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
	240	; Same goes for LocLVM_DiskName.
[45]	241	; These offsets are relative to an LVM entry.
[37]	242	LocLVM_VolumeName equ 14h ; 20 bytes
	243	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
[30]	244
[45]	245	; LVM constants.
[51]	246	LocLVM_LabelLen equ 14h ; Length of LVM Label (Disk/Part/Vol)
	247	LocLVM_DiskNameLen equ 14h ; Length of LVM DiskName
	248	LocLVM_VolumeNameLen equ 14h ; Length of LVM VolumeName
	249	LocLVM_PartitionNameLen equ 14h ; Length of LVM PartitionName
[30]	250
[34]	251
[51]	252	; -----------------------------------------------------------------------------
	253	; AiR-BOOT IPT
	254	; -----------------------------------------------------------------------------
[7]	255	; Offsets for IPT (Internal Partition Table)
[51]	256	LocIPT_MaxPartitions equ max_partitions ; 45 in v1.07+
[37]	257	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
	258	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
	259	LocIPT_Serial equ 0 ; Serial from MBR ?
	260	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
	261	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
	262	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
[51]	263	LocIPT_Flags equ 17 ; AiR-BOOT Flags for part (see below)
[37]	264	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
	265	LocIPT_LocationBegin equ 20 ; Begin of Partition
	266	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
	267	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
	268	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
[7]	269
[38]	270
[30]	271	; AiR-BOOT IPT-Flags
[37]	272	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
[51]	273	LocIPT_DefaultNonBootFlags equ 00000010b ; VIBR Detection is always on
[7]	274
[37]	275	Flags_Bootable equ 00000001b
	276	Flags_VIBR_Detection equ 00000010b
	277	Flags_HideFeature equ 00000100b
	278	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
[46]	279	Flags_ExtPartMShack equ 00010000b ; Ext. Partition M$-Hack req ?
[37]	280	Flags_NoPartName equ 01000000b
	281	Flags_NowFound equ 10000000b ; temp only in OldPartTable
	282	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
[7]	283
[37]	284	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
	285	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
	286	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
	287	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
[7]	288
[51]	289
	290	; -----------------------------------------------------------------------------
	291	; AiR-BOOT HPT
	292	; -----------------------------------------------------------------------------
	293	; Hidden Partition Table
	294	; Length of an HPT-entry ((45 * 6 bits-per-part) / 8) * 45
	295	; 33.75 = 34 bytes for HPT-entry, coincidently same as length of IPT-entry.
	296	; Packed table !
	297	LocHPT_LenOfHPT equ 34
	298
	299
	300	; -----------------------------------------------------------------------------
	301	; NAVIGATION KEYS
	302	; -----------------------------------------------------------------------------
[30]	303	; Navigation keys
[37]	304	Keys_Up equ 48h
	305	Keys_Down equ 50h
	306	Keys_Left equ 4Bh
	307	Keys_Right equ 4Dh
	308	Keys_PageUp equ 49h
	309	Keys_PageDown equ 51h
	310	Keys_GrayPlus equ 4Eh
	311	Keys_GrayMinus equ 4Ah
	312	Keys_Plus equ 1Bh
	313	Keys_Minus equ 35h
	314	Keys_ENTER equ 1Ch
	315	Keys_ESC equ 1h
	316	Keys_F1 equ 3Bh
	317	Keys_F10 equ 44h
[51]	318	Keys_C equ 2Eh ; Add. Check for Ctrl!
[37]	319	Keys_Y equ 2Ch
	320	Keys_Z equ 15h
	321	Keys_N equ 31h
	322	Keys_TAB equ 0Fh
	323	Keys_Delete equ 53h
	324	Keys_Backspace equ 0Eh
	325	Keys_Space equ 20h
[7]	326
[37]	327	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
[7]	328
	329
[51]	330	; -----------------------------------------------------------------------------
	331	; MISC
	332	; -----------------------------------------------------------------------------
	333	; Initial value for the FreeDriveletterMap
	334	; Meaning A,B not free; C-Z free, rest unused. (right to left)
	335	; Each partition with an assigned drive-letter clears a bit in this map.
	336	; (Not implemented yet)
	337	InitialFreeDriveletterMap equ 00000011111111111111111111111100b
[46]	338
[51]	339	;
	340	; The first harddisk is BIOS coded 80h.
	341	; This makes a total of 128 disks that could be supported using this coding.
	342	; This value is used to store disk-information and this info is allocated
	343	; in the BSS. 64 disks ought to be enough for everybody :-)
	344	;
	345	MaxDisks equ 64
[46]	346
	347
	348
[51]	349
	350
	351
	352	;##############################################################################
[46]	353	; AiR-BOOT / MAIN-CODE
[51]	354	;##############################################################################
[46]	355
[51]	356	;
[43]	357	; Because of the TASM-bug the processor had to be changed to turn JUMPS
	358	; off. Existing movzx instructions were replaced with 286 equivalent code.
	359	; Out of range relative jumps have been recoded.
[51]	360	;
	361	; Since version 1.0.8, JWasm is the preferred assembler and Tasm will be
	362	; dropped. Also, the chances of AiR-BOOT being used on a 286-machine are
	363	; very slim, so a future version will revert back to .386 and also incorporate
	364	; 32-bit code. This will enable some enhanced constructs such as scaled
	365	; indexing, bit-instructions, 32-bit registers and what not.
	366	;
[43]	367	.286
[30]	368
[51]	369	;
	370	; For Tasm, MODEL is needed for the USES directive to work.
	371	; So always use a model when assembling with Tasm otherwise registers on
	372	; function calls that use USES are not saved and restored.
	373	; The model itself, has no real effect because we generate a binary image
	374	; and not a segmented executable.
	375	; For the other assemblers we define no model to get rid of the default C/C++
	376	; segments for future object-linked versions of AiR-BOOT.
	377	;
[43]	378	IFDEF TASM
[46]	379	;~ .model large, basic
[43]	380	.model tiny,c
	381	ENDIF
[37]	382
	383	;
[51]	384	; The below is used to switch between the original 1-segment (code_seg) layout
	385	; and the new 2-segment (code_seg and bss_data) layout.
	386	; It will be removed in future versions.
[37]	387	; The 2-segment layout was needed for JWasm because it does not treat
[51]	388	; db ? at the end of a code segment as bss-data.
[37]	389	; Therefore, a true BSS segment is now used.
[51]	390	; Both the code_seg and the bss_data are grouped to the logical AIRBOOT
[37]	391	; segment.
	392	; Note that this influences the offsets in the BSS in the list-file and
	393	; the wdis disassembly file (.WDA).
	394	; They are now segment-relative. The true offset is resolved at link
	395	; time.
	396	;
[43]	397	SEGMENTED EQU
[37]	398
[51]	399	IFDEF SEGMENTED
	400	AIRBOOT GROUP LDRIMAGE,VOLATILE
	401	ENDIF
[37]	402
[51]	403	; Our code-segment starts here.
	404	LDRIMAGE SEGMENT USE16 PUBLIC 'CODE'
[7]	405
[51]	406	IFDEF SEGMENTED
	407	ASSUME CS:AIRBOOT, DS:AIRBOOT, ES:nothing, SS:nothing
	408	ELSE
	409	ASSUME CS:LDRIMAGE,DS:LDRIMAGE,ES:nothing, SS:nothing
	410	ENDIF
[30]	411
[51]	412
	413
[31]	414	;==============================================================================
[51]	415	; Sector 1
	416	;==============================================================================
[30]	417
[51]	418	;------------------------------------------------------------------------------
[46]	419	; We are not a .COM file at 100h but a BINARY image
	420	; of which only the 1st sector gets loaded at 0000:07c00h
	421	; by the BIOS. The code in this 1st sector is position
	422	; independent and moves itself to a new location at 8000:0000h.
	423	; Then it jumps to a new entry-point and loads the rest of
	424	; the image to the new location.
[51]	425	org 00000h
	426	;------------------------------------------------------------------------------
[30]	427
[46]	428
	429	;
[51]	430	; Since AiR-BOOT is a boot-loader residing in track0, the first 512 bytes
	431	; have the layout of a Master Boot Record (MBR). When AiR-BOOT get's installed,
	432	; the first 512 bytes of this code get's merged with the Partition Table.
	433	; The rest is installed in the remaining sectors with sector 62 (LBA 61)
	434	; being the last sector used by AiR-BOOT. Sector 63 is reserved for IBM LVM.
	435	; The last sector used by AiR-BOOT is a copy of the MBR that AiR-BOOT makes
	436	; every time a system gets booted.
[46]	437	;
[30]	438
[46]	439	;
[51]	440	; Due to the addition of an extra 'I13X' sugnature and code to preserve the
	441	; values of the registers on entry, the MBR-code has become a bit messy.
	442	; This will be cleaned-up in future versions.
	443	;
	444
	445	;
[46]	446	; Martin had a short jump followed by the AiRBOOT signature at first.
	447	; Then he encountered strange behaviour by some M$ operating-systems
	448	; if the the first insruction was not a CLI.
[30]	449	; But there was no room to insert the CLI and of course he did not want to
[51]	450	; change the location of the AiR-BOOT signature.
[30]	451	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
[51]	452	; jump that uses the 'A' of the AiR-BOOT signature as the jump displacement.
[46]	453	;
[30]	454
	455
[51]	456	; -----------------------------------------------------------------------------
	457	; FIRST ENTRY-POINT
	458	; -----------------------------------------------------------------------------
[52]	459	; BOOKMARK: FIRST ENTRY-POINT (Invoked by BIOS)
[51]	460	; ######################################################
	461	; # ENTRY-POINT WHERE THE BIOS TRANSFERS CONTROL TO US #
	462	; ######################################################
[37]	463	AiR_BOOT:
[51]	464	; Some M$ operating systems need a CLI
	465	; here otherwise they will go beserk
	466	; and will do funny things during
	467	; boot phase, it's laughable!
	468	MBR_1stOpc: cli
[30]	469
[51]	470	; JMP-Short -> MBR_Start
	471	; Uses the 'A' from the signature as the displacement !
	472	MBR_JmpOpc db 0EBh
[7]	473
[51]	474	; ID String, Date (DD,MM,CC,YY), Version Number, Language ID
	475	;~ db 'AiRBOOT',24h,02h,20h,12h,01h,08h,TXT_LanguageID
	476	MBR_ABSig: InsertAirbootSignature TXT_LanguageID
[37]	477
[51]	478	; Total Code Sectors Count.
	479	; Actual value will be inserted by FIXCODE.
	480	MBR_CodeSecs db 1
[37]	481
[51]	482	; Total Code Sectors Count, dynamically calculated.
	483	;~ db (code_end-$)/512
[37]	484
[51]	485	; Check-Sum for Code
	486	MBR_CheckCode dw 0
[37]	487
	488
	489
[51]	490	; -----------------------------------------------------------------------------
	491	; THIRD ENTRY-POINT
	492	; -----------------------------------------------------------------------------
[52]	493	; BOOKMARK: THIRD ENTRY-POINT (Relocate code)
[30]	494	;
	495	; No single instruction below should be changed, added or removed in the code
	496	; below as this will cause the jump-link to go haywire.
[31]	497	;
[37]	498	MBR_Start:
[51]	499	;
	500	; When we arrive here, no registers have been used yet.
	501	; So, they still contain the values the BIOS left in them.
	502	; We want to preserve those value's for later inspection
	503	; by putting them on the stack.
	504	;
[30]	505
[51]	506	; No space for this instruction here.
	507	; We'll enable interrupts later.
	508	;sti ; This opcode is dedicated to:
	509	; =MICROSOFT JUMP DEPARTMENT=
	510
	511
	512	; Push all registers with values provided by the BIOS
	513	; on the stack.
	514	pusha
	515	; Temporary save SS and SP so we still have access to this
	516	; stack after we have setup our own.
	517	mov dx,ss
	518	mov bx,sp
	519
	520	;
[37]	521	; Setup some base stuff
	522	; AX got loaded wrongly for debug, changed the instructions
	523	; without modifying the number of bytes.
[51]	524	; Don't comment-out the redundant instruction below because it
[37]	525	; will change the number of bytes and break the jump-chain.
[51]	526	;
	527
	528	; The segment we are moving ourself from (NOT USED)
	529	;mov ax, StartBaseSeg
[37]	530	;mov ds, ax
[51]	531
	532	; Make sure DS points to CS.
[37]	533	push cs
	534	pop ds
[51]	535
	536	; Setup the source and destination for the code move.
	537	mov si, StartBasePtr ; The offset we move ourself from
	538	mov ax, BootBaseSeg ; The target segment we move to
[37]	539	mov es, ax
[51]	540	;mov di, BootBasePtr ; The target offset we move to
	541	; Changed the instruction to make room.
	542	; So, BootBasePtr is not used !
	543	; The offset in the target segment is assumed to be 0000
	544	; anyway.
	545	xor di,di
	546	;sti
[30]	547
[51]	548	; Depending on pre-boot or debug.
	549	; Note that ReleaseCode is obsolete, so we will always move
	550	; 256 words; aka this sector, the MBR.
[37]	551	IFDEF ReleaseCode
	552	mov cx, 256 ; Pre-boot environment
	553	ELSE
[51]	554	mov cx, 32700 ; Old Debug environment (move ~64kB)
[37]	555	ENDIF
[30]	556
[37]	557	;
[51]	558	; This moves this 512-byte sector, loaded by the BIOS at
	559	; 0000:7c00 to 8000:0000.
[37]	560	;
[51]	561	cld
[37]	562	rep movsw
[30]	563
[51]	564	; Code an intersegment jump to the new location.
	565	; jmp BootBaseSeg:BootBaseExec
	566	; Note that DX:BX containts the old SS:SP.
[37]	567	db 0EAh
[46]	568	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
	569	dw BootBaseSeg ; This is 08000h
[7]	570
[30]	571
[51]	572
	573
	574	; -----------------------------------------------------------------------------
	575	; SIMPLE MBR FUNCTIONS
	576	; -----------------------------------------------------------------------------
[30]	577	;
	578	; Some MBR-functions to provide absolute minimum functionality.
	579	;
	580
	581	;
[52]	582	; BOOKMARK: Halt System
[30]	583	; Entry-point for halting the system.
	584	;
[7]	585	MBR_HaltSystem:
[37]	586	mov ax, 8600h
	587	xor cx, cx
	588	mov dx, 500
[46]	589	int 15h ; Wait to display the whole screen :]
	590	MBR_HaltSys:
	591	cli
[37]	592	jmp MBR_HaltSys
[7]	593
[31]	594
[45]	595	;
	596	; Some small space for variables.
	597	;
	598	ORIGIN 0003Ch
	599
[51]	600	; Comport settings.
	601	; It had to be moved to create room for the double I13X signature.
[37]	602	; It cannot be in the config-area (sector 55)
[43]	603	; because that area is crc-protected and would not allow 'poking'.
	604	BIOS_AuxParms dw BIOS_AUXPARMS_DEFAULT
[31]	605
[51]	606
	607	IFDEF AUX_DEBUG
[37]	608	reserved db 6 dup('X')
[51]	609	ELSE
	610	reserved db 6 dup(0)
	611	ENDIF
[30]	612
[45]	613
[51]	614
	615
	616	; -----------------------------------------------------------------------------
	617	; SECOND ENTRY-POINT
	618	; -----------------------------------------------------------------------------
[37]	619	;
	620	; We arrive here after the first jump using the 'A' of the
[51]	621	; AiR-BOOT signature. So we ensure the jump is always at
	622	; this offset. We jump here, because Martin needed to
	623	; insert a CLI on start and did not want to change the
	624	; AiR-BOOT signature because of Microsoft inventions...
[45]	625	;
	626	ORIGIN 00044h
[37]	627
	628	; Jump again...
[51]	629	; This time to the code that relocates to 8000:0000.
[52]	630	; BOOKMARK: SECOND ENTRY_POINT (Skipped over AB signature)
[37]	631	jmp MBR_Start
	632
[30]	633	;
	634	; Entry-point when loading fails.
	635	;
[37]	636	db 'LOAD ERROR!', 0
	637	MBR_LoadError Proc Near
	638	mov si, offset $-12
	639	push cs
	640	pop ds
	641	call MBR_Teletype
	642	MBRLE_Halt:
	643	jmp MBRLE_Halt
	644	MBR_LoadError EndP
[7]	645
[30]	646	;
	647	; Entry-point when saving fails.
	648	;
[37]	649	db 'SAVE ERROR!', 0
	650	MBR_SaveError Proc Near
	651	mov si, offset $-12
	652	push cs
	653	pop ds
	654	call MBR_Teletype
	655	MBRSE_Halt:
	656	jmp MBRSE_Halt
	657	MBR_SaveError EndP
[7]	658
[30]	659
	660	; Put text on the screen using the BIOS tele-type function.
	661	; No attributes like color are supported.
[7]	662	; In: SI - Pointer to begin of string (EOS is 0)
	663	; Destroyed: SI
[37]	664	MBR_Teletype Proc Near Uses ax bx cx
	665	mov ah, 0Eh
	666	mov bx, 7
	667	MBRT_Loop:
	668	lodsb
	669	or al, al
	670	jz MBRT_End
	671	int 10h
	672	jmp MBRT_Loop
	673	MBRT_End:
	674	ret
	675	MBR_Teletype EndP
[7]	676
[30]	677	;
	678	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
	679	;
	680
[52]	681	; In: BX - Base Check
	682	; DS:SI - Pointer to 512-byte-area to be included
	683	; Out: BX - Base Check Result
[7]	684	; Destroyed: SI will get updated (+512)
[37]	685	MBR_GetCheckOfSector Proc Near Uses ax cx
	686	mov cx, 256
	687	MBRGCOS_Loop:
	688	lodsw
	689	xor ax, 0BABEh
	690	xor bx, ax
	691	loop MBRGCOS_Loop
	692	or bx, bx
	693	jnz MBRGCOS_NoFixUp
	694	mov bx, 1 ; dont allow 0, cause 0 == empty
	695	MBRGCOS_NoFixUp:
	696	ret
	697	MBR_GetCheckOfSector EndP
[7]	698
[30]	699
	700
	701
	702
	703
[51]	704	; -----------------------------------------------------------------------------
	705	; ENTRY-POINT OF MOVED CODE
	706	; -----------------------------------------------------------------------------
	707
[30]	708	;
[51]	709	; When we arrive here we are running at 8000:0000.
	710	; DX:BX contains the SS:SP of the old stack.
[30]	711	;
	712
[51]	713	;
	714	; This is where the rest of AiR-BOOT gets loaded from track0.
	715	;
[52]	716	; BOOKMARK: Running at relocated position (Load additional sectors)
[31]	717	;------------------------------------------------------------------------------
[7]	718	MBR_RealStart:
[51]	719	;
	720	; Setup new stack and other segment registers.
	721	;
[37]	722	mov ax, StackSeg ; 07000h, below the moved code
	723	mov ss, ax
	724	mov sp, 7FFEh ; Even is better
[51]	725	push es ; ES holds segment where we moved to
[52]	726	pop ds ; Set DS=ES to Code Segment
[30]	727
[51]	728	;
	729	; Push the old SS:SP which was saved in DX:BX on the new stack.
	730	;
	731	push dx ; Old SS
	732	push bx ; Old SP
[43]	733
[51]	734
[37]	735	; If we are in debug-mode, all code is moved already,
	736	; so we can directly jump to it.
	737	; One difference is that in debug-mode, the whole .com image is
	738	; loaded by dos while when air-boot is active from the MBR it
	739	; does the loading itself.
[51]	740	; (This debug environment is obsolete and dis-fuctional)
[37]	741	IFNDEF ReleaseCode
	742	jmp AiR_BOOT_Start
	743	ENDIF
[30]	744
[37]	745	; Load the configuration-sectors from disk.
[51]	746	; These are the main configuration sector and the various
	747	; tables that follow it upto but not including the MBR backup.
[37]	748	mov bx, offset Configuration
[51]	749	mov dx, 0080h ; First harddrive
	750	mov cx, 0037h ; Config sector is at 55d (CHS)
[30]	751
[37]	752	; Call the i/o-part
	753	call MBR_LoadConfig
	754	jnc MBR_ConfigCopy_NoError
[30]	755
[37]	756	; Some error occured
	757	MBR_ConfigCopy_LoadError:
[51]	758	call MBR_LoadError ; Will Abort BootUp
[30]	759
[37]	760	; Load the code sectors
	761	MBR_ConfigCopy_NoError:
[51]	762	mov bx, offset FurtherMoreLoad ; Directly after MBR in mem
	763	mov dx, 0080h ; First harddrive
	764	mov cx, 0002h ; Start at second sector
	765	mov ah, 02h ; Read sectors
[30]	766
[51]	767	; This location is in the MBR.
	768	; It is filled in by the FIXCODE helper that post processes
	769	; the AIRBOOT loader image after it has been built.
	770	; FIXCODE also embeds the MBR protection-image.
	771	mov al, ds:[10h] ; Number of code sectors
	772	int 13h ; Call BIOS service
[37]	773	jnc MBR_RealStart_NoError
	774	jmp MBR_ConfigCopy_LoadError
[31]	775
	776
[37]	777	; [v1.05+]
	778	; Signature for IBM's LVM to detect our "powerful" features ;)
[45]	779	;
[37]	780	; [v1.0.8+]
	781	; Reworked MBR code to be able to create a
	782	; double 'I13X' signature.
	783	; MBR's created with LVM eCS v1.x have the signature at 0d5h
	784	; MBR's created with LVM eCS v2.x have the signature at 0d0h
	785	; See eCS bugtracker issue #3002
[45]	786	;
[37]	787	; Update: These are actually MOV EAX,'X31I' instructions
	788	; in the eCS LVM MBR-code. They are at different places in
[51]	789	; the v1.x and v2.x LVM MBR-code. Other code might depend on
	790	; their presence. Let's protect their location.
[45]	791	ORIGIN 000d0h
[37]	792	db 'I13X',0,'I13X',0
[31]	793
[30]	794
[37]	795	MBR_RealStart_NoError:
	796	; Now Check Code with CheckSum
	797	mov si, offset FurtherMoreLoad
[30]	798
[37]	799	;movzx cx, bptr ds:[10h]
	800	mov cl, ds:[10h]
	801	mov ch,0
[31]	802
[51]	803	; Claculate checksum
[37]	804	xor bx, bx
	805	MBR_RealStart_CheckCodeLoop:
	806	call MBR_GetCheckOfSector
	807	loop MBR_RealStart_CheckCodeLoop
[31]	808
	809
[37]	810	cmp MBR_CheckCode, bx
	811	je MBR_RealStart_CheckSuccess
[7]	812
[37]	813	mov si, offset TXT_ERROR_Attention
	814	call MBR_Teletype
	815	mov si, offset TXT_ERROR_CheckCode
	816	call MBR_Teletype
	817	mov si, offset TXT_ERROR_CheckFailed
	818	call MBR_Teletype
	819	jmp MBR_HaltSystem
[51]	820
	821
	822	;
	823	; OK, all loading went fine so the rest of the code
	824	; is present now, so we jump to it.
	825	; The old SS:SP is still on the stack.
	826	;
[37]	827	MBR_RealStart_CheckSuccess:
	828	jmp AiR_BOOT_Start
[30]	829
	830
	831
	832
[37]	833
[31]	834	;------------------------------------------------------------------------------
[51]	835	Include TEXT/TXTMBR.ASM ; All translateable Text in MBR
[31]	836	;------------------------------------------------------------------------------
[30]	837
	838
	839
[31]	840	; This is an ugly kludge function to create space for the
	841	; double 'I13X' signature.
	842	; It loads the configuration sectors, but bx,cx and dx are not initialized
	843	; in this function. That's done around line 500.
	844	; Putting this few bytes here creates just enough room.
[37]	845	MBR_LoadConfig Proc Near
	846	; Changed from conditional assembler to calculated value
	847	; Fixes issue: #2987 -- "air-boot doesn't remember drive letter"
	848	; Size of the ab-configuration in 512 byte sectors
	849	mov al, (MBR_BackUpMBR - Configuration) / 200h
	850	mov ah,02h
	851	int 13h
	852	ret
	853	MBR_LoadConfig EndP
[31]	854
[35]	855
[37]	856	; Disk Signature
	857	; Note that in an LVM 2.x MBR this collides
	858	; with the dummy PTE that it uses to look for IBM-BM
	859	; on the second harddisk.
[45]	860	ORIGIN 001B8h
	861
[52]	862	; AiR-BOOT installer will merge the field
	863	; from the MBR it replaces.
[51]	864	MBR_DrvSig db 'DSIG'
[31]	865
[45]	866	; Unused word at 01BCh.
	867	; An LVM 2.x MBR puts 0CC33h here.
[52]	868	; AiR-BOOT installer will merge the field
	869	; from the MBR it replaces.
[51]	870	MBR_Spare dw '$$'
[35]	871
	872
[45]	873	;
	874	; Partition Table.
	875	;
	876	ORIGIN 001BEh
[43]	877
[45]	878	; The 4 entries just for show.
[52]	879	; AiR-BOOT installer will merge them from the MBR it replaces.
[51]	880	MBR_PartTable:
[37]	881	db 16 dup('0')
	882	db 16 dup('1')
	883	db 16 dup('2')
	884	db 16 dup('3')
	885
	886	; Boot Sigbature
[51]	887	MBR_Sig dw 0aa55h
[37]	888
[30]	889
	890
	891
[37]	892
[45]	893
[51]	894
[31]	895	;==============================================================================
[51]	896	; Sector 2
	897	;==============================================================================
[30]	898
[51]	899	; -----------------------------------------------------------------------------
	900	; FILE-SYSTEM TABLES
	901	; -----------------------------------------------------------------------------
	902
	903
[45]	904	ORIGIN 00200h
[30]	905
[31]	906	;
	907	; Everything beyond this point is loaded on startup
	908	; and is NOT existant at first
	909	;
[7]	910	FurtherMoreLoad:
[30]	911
	912	;
	913	; Filesystem table correlating id with name.
	914	;
	915
[37]	916	; first Normal-Partition-ID, Hidden-Partition-ID
[51]	917	; and Default-Partition-Flags.
[37]	918	; 01h -> Boot-Able
	919	; 10h -> FAT32 - Name Getting Scheme
	920	; 20h -> No Name To Get (use Partition Name from IPT)
	921	; 40h -> 'L' flag possible
[7]	922	db 'AiRSYS-TABLE'
[37]	923	FileSysIDs db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
[29]	924	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
	925	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
[7]	926	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
	927	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
	928	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
	929	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	930	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	931	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	932	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
	933	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
	934	db 16 dup (0)
	935
[46]	936	FileSysNames db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
	937	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
	938	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
	939	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
	940	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
	941	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
	942	db ' ', ' ', ' ', ' '
	943	db ' ', ' ', ' ', ' '
	944	db ' ', ' ', ' ', ' '
	945	db ' ', 'Kernel ', ' ', '0V-Award'
	946	; db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
	947	db 'OS2-BMGR', 'via BIOS', 'Floppy ', 'Unknown '
[7]	948	; -> 44 Partition-Types
	949
[30]	950
	951
	952
[37]	953
	954
[51]	955	;==============================================================================
	956	; Sector 3
	957	;==============================================================================
[30]	958
[51]	959	; -----------------------------------------------------------------------------
	960	; ENTRY-POINT AFTER LOADING THE REST OF THE CODE
	961	; -----------------------------------------------------------------------------
[30]	962
[51]	963	ORIGIN 00400h
[30]	964
[43]	965
[51]	966	; ############################################
	967	; # ENTRY-POINT AFTER ALL THE INITIAL HASSLE #
	968	; ############################################
[52]	969	; BOOKMARK: AiR_BOOT_Start (AiR-BOOT now completely loaded)
[36]	970	AiR_BOOT_Start:
[30]	971
[36]	972
[51]	973	;
	974	; Enable interrupts.
	975	;
	976	sti
[36]	977
	978	;
[51]	979	; Pop the old SS:SP from the stack and save it in the BSS.
[52]	980	; Note that this is outside the normal variable area that gets cleared.
	981	; This allows AiR-BOOT to restart itself when debugging and come-up
	982	; with access to the original values of registers the BIOS passed.
[51]	983	;
	984	pop [OldSP]
	985	pop [OldSS]
	986
	987
	988	; -----------------------------------------------------------------------------
	989	; IBM-BM BOOT PREPARATION
	990	; -----------------------------------------------------------------------------
	991	;
[36]	992	; Since v1.0.8, AiR-BOOT is able to chainload IBM-BM.
	993	; When IBM-BM resides above the 1024-cylinder limit, the 'I13X'
	994	; signature is required at 3000:0000, FS needs to contain 3000h
	995	; and the 32-bit LBA address needs to follow the 'I13X' signature.
	996	; For booting IBM-BM from the second disk, a copy of the MBR of the
	997	; first disk is also required at 0000:7E00.
	998	; This information is derived from the eCS 2.x LVM MBR.
	999	;
	1000	; So, now is a good time to copy the MBR of the first disk to
	1001	; 0000:7E00 in case the partition that will be started is IBM-BM.
	1002	; This copy is located at 8000:0000 and DS already points to this
[51]	1003	; segment. The 'I13X' signature and FS will be setup later.
[36]	1004	;
[37]	1005	pusha ; Save all the general purpose regs
	1006	push es ; We need ES too, so save its value
	1007	xor ax,ax ; Segment 0000h
	1008	mov es,ax ; Make ES point to it
	1009	mov si,offset BootBasePtr ; Start of AiR-BOOT which has the MBR
	1010	mov di,7e00h ; Destination for the MBR for IBM-BM
	1011	mov cx,100h ; 256 words = 512 bytes
	1012	cld ; Direction from low to high
	1013	rep movsw ; Copy the 256 words of the MBR
	1014	pop es ; Restore previous value of ES
	1015	popa ; Restore all the general purpose regs
[36]	1016
	1017
[51]	1018	; -----------------------------------------------------------------------------
	1019	; PRECRAP
	1020	; -----------------------------------------------------------------------------
[36]	1021
[51]	1022	;
	1023	; First it clears the BSS area.
[52]	1024	; Note that the old SS:SP is stored outside this area so this
[51]	1025	; does not get lost.
	1026	; Then initialize various runtime variables and structures.
	1027	;
[52]	1028	; BOOKMARK: Pre Crap
[51]	1029	call PRECRAP_Main
	1030	; Number of harddisks and other system-info is now known.
[43]	1031
[51]	1032	;!
	1033	;! DEBUG_BLOCK
	1034	;! Let's see what the BIOS supplied us with...
	1035	;! Uncomment below to activate.
	1036	;!
	1037	__DUMP_BIOS_REGS__ EQU
	1038	IFDEF AUX_DEBUG
	1039	IFDEF __DUMP_BIOS_REGS__
	1040	pushf
	1041	pusha
	1042	; Print title.
	1043	mov si,offset [bios_reg]
	1044	call AuxIO_Print
	1045	; Save the current stack (SS:SP).
	1046	mov ax,ss
	1047	mov [CurrentSS],ax
	1048	mov [CurrentSP],sp
[45]	1049
[51]	1050	; Restore the old stack.
	1051	mov ss,[OldSS]
	1052	mov sp,[OldSP]
[30]	1053
[51]	1054	; Pop the registers with the BIOS values.
	1055	popa
	1056	; Push them back for AiR-BOOT restart (debug mode).
	1057	pusha
	1058	; Dump them to the serial-port.
	1059	call DEBUG_DumpRegisters
	1060	; Restore the current stack.
	1061	mov ax,[CurrentSS]
	1062	mov ss,ax
	1063	mov sp,[CurrentSP]
[30]	1064
[51]	1065	; Restore registers.
	1066	popa
	1067	popf
	1068	ENDIF
	1069	ENDIF
[30]	1070
	1071
[51]	1072
	1073
	1074	;!
	1075	;! DEBUG_BLOCK
	1076	;! Dump the registers at this point.
	1077	;! Uncomment below to activate.
	1078	;!
	1079	IFDEF AUX_DEBUG
	1080	;~ call DEBUG_DumpRegisters
	1081	; Dump drive-letters of dl-feature before partitions are
	1082	; scanned and processed.
	1083	call DEBUG_DumpDriveLetters
	1084	call DEBUG_DumpVolumeLetters
	1085	call DEBUG_DumpPartitionXref
	1086	ENDIF
	1087
	1088	; -----------------------------------------------------------------------------
	1089	; PARTITION SCAN
	1090	; -----------------------------------------------------------------------------
	1091	;
[52]	1092	; BOOKMARK: Scan all partitions
[51]	1093	;
	1094	call PARTSCAN_ScanForPartitions
	1095	; Internal Partition Table is now populated.
	1096
	1097	;!
	1098	;! DEBUG_BLOCK
	1099	;! Dump various tables.
	1100	;! Uncomment below to activate.
	1101	;!
	1102	IFDEF AUX_DEBUG
[50]	1103	;~ call DEBUG_DumpIPT
[49]	1104	;~ call DEBUG_DumpPartitionPointers
	1105	;~ call DEBUG_DumpNewPartTable
[50]	1106	;~ call DEBUG_DumpDriveLetters
[51]	1107	call DEBUG_DumpDriveLetters
	1108	call DEBUG_DumpVolumeLetters
	1109	call DEBUG_DumpPartitionXref
	1110	ENDIF
[49]	1111
[30]	1112
[51]	1113	; -----------------------------------------------------------------------------
	1114	; RESTORE FORCED DRIVELETTER CORRELATION [LVM]
	1115	; -----------------------------------------------------------------------------
	1116
	1117	;
	1118	; Reconnect forced drive-letters to their corresponding
	1119	; partitions.
	1120	;
[52]	1121	; BOOKMARK: Update Driveletters so they are in-sync again
[51]	1122	call PARTSCAN_UpdateDriveLetters
	1123	; Driveletter <-> Partition correlation is now restored.
	1124
	1125
	1126
	1127	;!
	1128	;! DEBUG_BLOCK
	1129	;! Dump various tables.
	1130	;! Uncomment below to activate.
	1131	;!
	1132	IFDEF AUX_DEBUG
	1133	;~ call DEBUG_DumpIPT
	1134	;~ call DEBUG_DumpPartitionPointers
	1135	;~ call DEBUG_DumpNewPartTable
	1136	;~ call DEBUG_DumpDriveLetters
	1137	call DEBUG_DumpDriveLetters
	1138	call DEBUG_DumpVolumeLetters
	1139	call DEBUG_DumpPartitionXref
	1140	ENDIF
	1141
	1142
	1143	; -----------------------------------------------------------------------------
	1144	; SHOW WE ARE ALIVE
	1145	; -----------------------------------------------------------------------------
	1146
	1147	;
	1148	; Put some info about AiR-BOOT and the system on the screen.
	1149	;
	1150
[49]	1151	; Display number of physical disks found
[37]	1152	mov si, offset DisksFound
	1153	call MBR_Teletype
	1154	mov al, [TotalHarddiscs]
	1155	call VideoIO_SyncPos
	1156	call VideoIO_PrintByteDynamicNumber
	1157	xor si,si
	1158	call MBR_TeletypeNL
[30]	1159
[49]	1160	; Display number of partitions found
[37]	1161	mov si, offset PartitionsFound
	1162	call MBR_Teletype
	1163	mov al, [CFG_Partitions]
	1164	call VideoIO_SyncPos
	1165	call VideoIO_PrintByteDynamicNumber
[30]	1166
[49]	1167	; Dump summier disk-info for disks found
[37]	1168	xor si,si
	1169	call MBR_TeletypeNL
	1170	call MBR_TeletypeNL
	1171	call VideoIO_SyncPos
	1172	mov dl,80h
	1173	call VideoIO_DumpDiskInfo
[30]	1174
	1175
	1176
	1177
	1178
[51]	1179	; -----------------------------------------------------------------------------
	1180	; eComStation PHASE1 CHECK
	1181	; -----------------------------------------------------------------------------
	1182
	1183	;
[52]	1184	; BOOKMARK: Check for eCS being installed
	1185	; Here we check if eComStation v2.1+ is being installed.
[51]	1186	; If so, we forgo the menu and directly boot it.
	1187	;
	1188
	1189	; If the first byte of the name of the Install Volume is not 0
[49]	1190	; then we potentially have a phase1 boot.
	1191	test byte ptr [eCS_InstallVolume],0ffh
	1192	; Nope, so continue normally.
	1193	jz MBR_Main_ContinueBoot
[36]	1194
[49]	1195	; Setup phase1.
	1196	; It is still possible that a name was set for the
	1197	; Install Volume that does not exist.
	1198	; In that case CY will be clear and AL=0FFh.
	1199	call PART_SetupPhase1
	1200	; Oops, Install Volume not found, continue normally.
	1201	jnc MBR_Main_ContinueBoot
[30]	1202
	1203
[51]	1204	;
[49]	1205	; == Install Volume Found ==
[51]	1206	;
[30]	1207
[51]	1208
	1209	;!
	1210	;! DEBUG_BLOCK
	1211	;! Dump various tables.
	1212	;! Uncomment below to activate.
	1213	;!
	1214	IFDEF AUX_DEBUG
	1215	;~ call DEBUG_DumpIPT
	1216	;~ call DEBUG_DumpPartitionPointers
	1217	;~ call DEBUG_DumpPartitionXref
	1218	;~ call DEBUG_DumpNewPartTable
	1219	;~ call DEBUG_DumpDriveLetters
	1220	ENDIF
	1221
	1222
[52]	1223	; BOOKMARK: Scan for Partitions (Only if eCS install going on)
[51]	1224	; Because one or more partitions are possibly added, the
	1225	; PartitionXref table is not 'in sync' and could cause the
	1226	; wrong system to be automatically booted.
	1227	; So we rescan all partitions causing the PartitionXref
	1228	; table to be filled with correct values so the auto-boot
	1229	; from the new partition will work correctly.
[49]	1230	call PARTSCAN_ScanForPartitions
[30]	1231
	1232
[51]	1233	;!
	1234	;! DEBUG_BLOCK
	1235	;! Dump various tables.
	1236	;! Uncomment below to activate.
	1237	;!
	1238	IFDEF AUX_DEBUG
[50]	1239	;~ call DEBUG_DumpIPT
[49]	1240	;~ call DEBUG_DumpPartitionPointers
[50]	1241	;~ call DEBUG_DumpPartitionXref
[49]	1242	;~ call DEBUG_DumpNewPartTable
[51]	1243	;~ call DEBUG_DumpDriveLetters
	1244	ENDIF
[30]	1245
[51]	1246	; Setup automatic boot to forgo the Menu.
	1247	; PART_SetupPhase1 has filled in the other variables.
	1248	mov byte ptr [CFG_AutomaticBoot],1
[30]	1249
[51]	1250	;
	1251	; At this point the AiR-BOOT configuration has been altered
	1252	; to automatically boot the newly installed system without
	1253	; displaying the menu.
	1254	; Code further down the road will take care of that.
	1255	;
[49]	1256	jmp MBR_Main_ContinueBoot
[30]	1257
	1258
[49]	1259
	1260
[51]	1261	;
	1262	; Wether a new system is being installed or not,
	1263	; booting continues here.
	1264	;
	1265	MBR_Main_ContinueBoot:
[49]	1266
[51]	1267	;
	1268	; Inform user how to switch between post-screen and menu
	1269	; by putting this info on the screen.
	1270	;
[37]	1271	xor si,si
	1272	call MBR_TeletypeNL
	1273	xor si,si
	1274	call MBR_TeletypeNL
	1275	call MBR_TeletypeSyncPos
	1276	xor si,si
	1277	call MBR_TeletypeNL
	1278	call MBR_TeletypeNL
	1279	mov si, offset ShowMenu
	1280	call MBR_TeletypeBold
[30]	1281
	1282
[51]	1283	;
	1284	; Debug stop.
	1285	;
[30]	1286
[37]	1287	;
	1288	; ####################### WAIT FOR KEY ########################
	1289	;
[30]	1290
[37]	1291	; Wait for key so we can see debug log if ab-menu hangs.
[49]	1292	;~ xor ax, ax
	1293	;~ int 16h
[37]	1294	;call SOUND_Beep
[30]	1295
	1296
[51]	1297	; Copy BIOS POST to Second Page
[37]	1298	mov ax, VideoIO_Page1
[51]	1299	call VideoIO_BackUpTo
[30]	1300
[37]	1301	;call SOUND_Beep
[30]	1302
	1303
[52]	1304	; BOOKMARK: Save Configuration
[37]	1305	; Save configuration so phase1 boot-through is disabled
	1306	; on next boot.
[51]	1307	mov byte ptr [eCS_InstallVolume], 0
[37]	1308	call DriveIO_SaveConfiguration
[31]	1309
	1310
	1311
[37]	1312	;
[51]	1313	; See if setup needs to be entered.
[37]	1314	;
	1315	MBR_Main_ReEnterSetup:
	1316	call SETUP_CheckEnterSETUP
[7]	1317
[51]	1318	;
	1319	; Do some post processing.
	1320	;
[52]	1321	; BOOKMARK: After Crap
[37]	1322	call AFTERCRAP_Main
[30]	1323
[37]	1324	; [Linux support removed since v1.02]
	1325	; Now get FAT16-Linux Kernel Partition, If requested
	1326	;cmp [CFG_LinuxKrnlPartition], 0FFh
	1327	;je MBR_Main_NoLinuxKrnlPartition
	1328	;call LINUX_InitFAT16access
	1329	;MBR_Main_NoLinuxKrnlPartition:
[7]	1330
[30]	1331
[46]	1332
[37]	1333	MBR_Main_ReEnterBootMenuPre:
	1334	; SetUp PartitionPointers for BootMenu (filter non-bootable)
	1335	call PART_CalculateMenuPartPointers
[7]	1336
[37]	1337	; ...and count that one...
[46]	1338	cmp byte ptr [PartitionPointerCount], 0
[37]	1339	jne MBR_Main_SomethingBootAble
	1340	mov si, offset TXT_NoBootAble
	1341	call MBR_Teletype
	1342	jmp MBR_HaltSystem
[30]	1343
[37]	1344	MBR_Main_SomethingBootAble:
	1345	; FixUp Values, define Timed Setup booting, etc.
	1346	call PART_FixUpDefaultPartitionValues
[7]	1347
[30]	1348
	1349
[37]	1350	; -------------------------------------------------- BOOT-MENU
	1351	MBR_Main_ReEnterBootMenu:
	1352	call BOOTMENU_ResetMenuVars ; reset has to be done
[46]	1353	test byte ptr [CFG_AutomaticBoot], 1
[37]	1354	jz MBR_Main_NoAutomaticBooting
[49]	1355
	1356
[37]	1357	; ------------------------------------------ AUTOMATIC BOOTING
	1358	; Select automatic partition, disable automatic booting for
	1359	; next time and boot system...
[46]	1360	mov byte ptr [CFG_AutomaticBoot], 0
[37]	1361	call PASSWORD_AskSystemPwd
	1362	mov al, Menu_EntryAutomatic
[30]	1363
[37]	1364	;mov al, 2
[30]	1365
[37]	1366	mov Menu_EntrySelected, al ; zero based
	1367	jmp MBR_Main_NoBootMenu
[7]	1368
[30]	1369
[49]	1370	MBR_Main_NoAutomaticBooting:
	1371
[37]	1372	;call SOUND_Beep
[30]	1373
[46]	1374	test byte ptr [CFG_BootMenuActive], 0FFh
[37]	1375	jnz MBR_Main_GotBootMenu
	1376	; ----------------------------------------------- NO BOOT-MENU
	1377	; Select default partition and boot system...
	1378	call PASSWORD_AskSystemPwd
[30]	1379
[37]	1380	;call VideoIO_DBG_WriteString2
[30]	1381
[37]	1382	mov al, Menu_EntryDefault
	1383	;mov al,0 ; zero based
	1384	mov Menu_EntrySelected, al
	1385	jmp MBR_Main_NoBootMenu
[7]	1386
[37]	1387	MBR_Main_GotBootMenu:
	1388	; ------------------------------------------ BOOT-MENU VISUALS
[51]	1389
	1390
	1391	IFDEF FX_ENABLED
[37]	1392	call FX_StartScreen
[51]	1393	ENDIF
[30]	1394
[52]	1395	; BOOKMARK: Build Main Menu
[37]	1396	call BOOTMENU_BuildBackground
	1397	call BOOTMENU_BuildMain
[51]	1398
	1399	IFDEF FX_ENABLED
[37]	1400	call FX_EndScreenRight
[51]	1401	ENDIF
	1402
[37]	1403	call PASSWORD_AskSystemPwd
	1404	call BOOTMENU_ResetTimedBoot
[30]	1405
[52]	1406	; BOOKMARK: Display Main Menu
[37]	1407	call BOOTMENU_Execute
[30]	1408
[37]	1409	jc MBR_Main_ReEnterSetup
	1410	call BOOTMENU_SetVarsAfterMenu
[30]	1411
[37]	1412	; ---------------------------------------------------- BOOTING
	1413	MBR_Main_NoBootMenu:
[51]	1414
	1415	IFDEF FX_ENABLED
[37]	1416	call FX_StartScreen
[51]	1417	ENDIF
	1418
[52]	1419	; BOOKMARK: Display bye-screen and start selected partition
[37]	1420	call BOOTMENU_BuildGoodBye
[51]	1421
	1422	IFDEF FX_ENABLED
[37]	1423	call FX_EndScreenRight
[51]	1424	ENDIF
	1425
[37]	1426	call PASSWORD_AskChangeBootPwd
[7]	1427
[37]	1428	IFNDEF ReleaseCode
	1429	; Debug Code to terminate DOS .COM program - used for
	1430	; testing AiR-BOOT
[51]	1431	; Obsolete.
[37]	1432	int 3
	1433	mov ax, 6200h
	1434	int 21h
	1435	mov es, bx
	1436	mov ax, 4C00h ; Quit program
	1437	int 21h
	1438	ENDIF
	1439	call ANTIVIR_SaveBackUpMBR
[7]	1440
[49]	1441	; Preload the selected menu-entry
	1442	; However, this value will be wrong if eCS phase1 is
	1443	; active and the installation partition is newly created.
	1444	; See below for the adjustment.
	1445	mov dl, byte ptr [Menu_EntrySelected]
	1446
[51]	1447
	1448	;
	1449	; Prepare to start the partition.
	1450	;
[49]	1451	jmp MBR_Main_StartPartition
	1452
	1453
	1454
[51]	1455	; -----------------------------------------------------------------------------
	1456	; START PARTITION
	1457	; -----------------------------------------------------------------------------
	1458
[49]	1459	MBR_Main_StartPartition:
	1460
[51]	1461	IFDEF AUX_DEBUG
[49]	1462	;~ call DEBUG_DumpIPT
	1463	;~ call DEBUG_DumpPartitionPointers
[50]	1464	;~ call DEBUG_DumpPartitionXref
[49]	1465	;~ call DEBUG_DumpNewPartTable
[51]	1466	ENDIF
[49]	1467
	1468
[37]	1469	; -------------------------------------------- START PARTITION
[51]	1470	; THIS DOES NOT RETURN !
[37]	1471	call PART_StartPartition
[30]	1472
	1473
[31]	1474
[51]	1475
[30]	1476	;
[51]	1477	; This entry-point restarts AiR-BOOT almost from scratch.
	1478	; It skips the movement of the MBR but otherwise it is a functional restart.
	1479	; The old BIOS SS:SP where the registers on entry are stored is passed along.
[52]	1480	; This entry-point is used for debugging purposes.
[51]	1481	;
[52]	1482	; BOOKMARK: AiR-BOOT Restart (used for debugging)
[51]	1483	AirbootRestart:
	1484	mov bx, [OldSP] ; Old SP when BIOS transferred control to AB
	1485	mov dx, [OldSS] ; Old SS when BIOS transferred control to AB
	1486	jmp MBR_RealStart
	1487
	1488
	1489	;
	1490	; This entry-point displays a popup that the system is halted
	1491	; and then halts the system.
	1492	; It is entered on severe error conditions.
	1493	;
[52]	1494	; BOOKMARK: Halt System
[51]	1495	HaltSystem:
	1496	call VideoIO_ClearScreen
	1497	mov ax,0ababh
	1498	mov cx, 0C04h
	1499	mov si, offset SystemHalted
	1500	call SETUP_ShowErrorBox
	1501	; Halt the system.
	1502	jmp MBR_HaltSystem
	1503
	1504
	1505
	1506
	1507
	1508
	1509	;
[52]	1510	; The following section includes various assembler modules
	1511	; at the source level. These contain functionality for a
	1512	; multitude of categories like disk-access, video-io, lvm,
	1513	; debugging, etc. Later versions of AiR-BOOT will use such
	1514	; modules at the object-file level so they can be shared
	1515	; more easily.
[51]	1516	;
	1517
	1518
	1519	; -----------------------------------------------------------------------------
	1520	; INCLUDED FILE SECTION
	1521	; -----------------------------------------------------------------------------
	1522
[52]	1523	; BOOKMARK: Include Section
	1524
[51]	1525	;
[30]	1526	; Include other code-modules here.
	1527	;
[51]	1528
[30]	1529	b_std_txt:
[37]	1530	Include REGULAR/STD_TEXT.ASM ; Standard (non-translateable text)
[30]	1531	size_std_txt = $-b_std_txt
	1532
	1533	b_driveio:
[37]	1534	Include REGULAR/DRIVEIO.ASM ; Drive I/O, Config Load/Save
[30]	1535	size_driveio = $-b_driveio
	1536
[43]	1537	b_lvm:
	1538	Include SPECIAL/LVM.ASM ; LVM-specific code
	1539	size_lvm = $-b_lvm
	1540
[30]	1541	b_videoio:
[37]	1542	Include REGULAR/VIDEOIO.ASM ; Video I/O
[30]	1543	size_videoio = $-b_videoio
	1544
	1545	b_timer:
[37]	1546	Include REGULAR/TIMER.ASM ; Timer
[30]	1547	size_timer = $-b_timer
	1548
	1549	b_partmain:
[37]	1550	Include REGULAR/PARTMAIN.ASM ; Regular Partition Routines
[30]	1551	size_partmain = $-b_partmain
	1552
	1553	b_partscan:
[37]	1554	Include REGULAR/PARTSCAN.ASM ; Partition Scanning
[30]	1555	size_partscan = $-b_partscan
	1556
	1557	b_bootmenu:
[37]	1558	Include REGULAR/BOOTMENU.ASM ; Boot-Menu
[30]	1559	size_bootmenu = $-b_bootmenu
	1560
	1561	b_password:
[37]	1562	Include REGULAR/PASSWORD.ASM ; Password related
[30]	1563	size_password = $-b_password
	1564
	1565	b_other:
[37]	1566	Include REGULAR/OTHER.ASM ; Other Routines
[30]	1567	size_other = $-b_other
[7]	1568
[30]	1569	b_main:
[37]	1570	Include SETUP/MAIN.ASM ; The whole AiR-BOOT SETUP
[30]	1571	size_main = $-b_main
	1572
	1573	b_math:
[37]	1574	Include REGULAR/MATH.ASM ; Math functions (like 32-bit multiply)
[30]	1575	size_math = $-b_math
	1576
	1577	b_txtother:
[37]	1578	Include TEXT/TXTOTHER.ASM ; All translateable Text-Strings
[30]	1579	size_txtother = $-b_txtother
	1580
	1581	b_txtmenus:
[37]	1582	Include TEXT/TXTMENUS.ASM ; All translateable Menu-text
[30]	1583	size_txtmenus = $-b_txtmenus
	1584
	1585	b_charset:
[37]	1586	Include TEXT/CHARSET.ASM ; Special Video Charsets (if needed)
[30]	1587	size_charset = $-b_charset
	1588
[36]	1589	b_conv:
[37]	1590	Include REGULAR/CONV.ASM ; Various conversion routines
[36]	1591	size_conv = $-b_conv
[30]	1592
	1593	b_virus:
[37]	1594	Include SPECIAL/VIRUS.ASM ; Virus Detection / Anti-Virus
[30]	1595	size_virus = $-b_virus
[51]	1596
[29]	1597	; [Linux support removed since v1.02]
[37]	1598	;Include SPECIAL/FAT16.ASM ; FAT-16 Support
	1599	;Include SPECIAL/LINUX.ASM ; Linux Kernel Support
[51]	1600
[30]	1601	b_billsuxx:
[37]	1602	Include SPECIAL/F00K/BILLSUXX.ASM ; Extended Partition - Microsoft-Hack
[30]	1603	size_billsuxx = $-b_billsuxx
	1604
	1605	b_sound:
[37]	1606	Include SPECIAL/SOUND.ASM ; Sound
[30]	1607	size_sound = $-b_sound
	1608
	1609	b_apm:
[37]	1610	Include SPECIAL/APM.ASM ; Power Managment Support
[30]	1611	size_apm = $-b_apm
	1612
[51]	1613
	1614
	1615	;
	1616	; Cyrillic support.
	1617	;
	1618	IFDEF TXT_IncludeCyrillic
	1619	b_ccharset:
	1620	Include SPECIAL/CHARSET.ASM ; Charset Support (e.g. Cyrillic)
	1621	size_ccharset = $-b_ccharset
	1622	ENDIF
	1623
	1624	; Various debugging routines, uses AUXIO and CONV
	1625	IFDEF AUX_DEBUG
	1626	b_debug:
	1627	Include REGULAR/DEBUG.ASM ; Debug module
	1628	size_debug = $-b_debug
	1629	b_auxio:
	1630	Include REGULAR/AUXIO.ASM ; Com-port support for debugging
	1631	size_auxio = $-b_auxio
	1632	ENDIF
	1633
	1634	;
	1635	; We only include this if FX_ENABLED is defined.
	1636	; FX is disabled when debugging to have more room for debug-code.
	1637	; The module compiles to 50eh = 1294 bytes, so that is a lot.
	1638	;
	1639	IFDEF FX_ENABLED
[30]	1640	b_fx:
[37]	1641	Include SPECIAL/FX.ASM ; l33t Cooper-Bars/Scrolling <bg>
[30]	1642	size_fx = $-b_fx
[51]	1643	ENDIF
[30]	1644
	1645
[51]	1646	;
	1647	; End of code marker.
	1648	;
[52]	1649	; BOOKMARK: END OF CODE
[51]	1650	db 'BABE'
	1651	db 'FACE'
[30]	1652
[47]	1653
[51]	1654	; -----------------------------------------------------------------------------
	1655	; END OF CODE
	1656	; -----------------------------------------------------------------------------
	1657	code_end:
	1658
	1659
	1660
	1661
	1662
	1663
	1664
	1665
	1666
	1667
	1668	; -----------------------------------------------------------------------------
	1669	; BLDLEVEL INFORMATION
	1670	; -----------------------------------------------------------------------------
	1671
[52]	1672	; BOOKMARK: BLDLEVEL Information
[51]	1673	ORIGIN 068A0h
	1674
	1675	;
	1676	; The space between this offset and code_end is the space
	1677	; available for code.
	1678	;
	1679	zzz_code_space = $ - code_end
	1680
	1681
[46]	1682	bld_level:
[43]	1683	;
[46]	1684	; Here we insert the OS/2 BLDLEVEL Information.
	1685	; It is composed of the AiR-BOOT version-info and other
[51]	1686	; information. It is unique for each release of AiR-BOOT.
[46]	1687	;
[51]	1688
	1689	;
[47]	1690	; ?? When AUX_DEBUG is enabled and the above org is active,
	1691	; the BLDLEVEL gets corrupted eventhough it gets inserted here
	1692	; explicitly. The effect is almost like an 'OR' or a merge
	1693	; with the already generated FX code.
	1694	; Tasm and JWasm produce different results.
	1695	; ??
	1696	;
[46]	1697	InsertBuildLevel
	1698
[47]	1699
[30]	1700
[7]	1701
	1702
[51]	1703	;==============================================================================
	1704	; Sector 53
	1705	;==============================================================================
	1706
[45]	1707	;
[51]	1708	; From here on, the layout of the image consists of:
	1709	; - AiR-BOOT Protection Image
	1710	; - AiR-BOOT Configuration
	1711	; - DriveLetters
	1712	; - Install Volume
	1713	; - Floppy/CDROM/BIOS BOOT ENTRIES
	1714	; - Internal Partition Table (IPT)
	1715	; - Hidden Partition Table (HPT)
	1716	; - MBR Backup
[45]	1717	;
[7]	1718
[37]	1719	;
[51]	1720	; After that, the BSS follows with several runtime
	1721	; variables and structures.
	1722	; The BSS is not part of the image on disk of course.
	1723	;
	1724
	1725	; -----------------------------------------------------------------------------
	1726	; PROTECTION IMAGE
	1727	; -----------------------------------------------------------------------------
	1728
	1729	;
[52]	1730	; This is the AiR-BOOT MBR Protection Image.
[46]	1731	; The stuff generated here gets overwritten when the
[51]	1732	; MBR_PROT module, which is assembled separately,
	1733	; gets binary merged.
[37]	1734	; So you won't find the string below in the generated binary.
	1735	;
[52]	1736	; BOOKMARK: AiR-BOOT MBR Protection Image
[51]	1737	ORIGIN 06900h
[46]	1738
	1739
[51]	1740
	1741
[46]	1742	;
[51]	1743	; Hardcoded to 768 bytes (MBR_PROT.ASM)
[46]	1744	; The string below is searched for by the FIXCODE helper and must be
[51]	1745	; page (256 bytes) aligned.
[46]	1746	;
[51]	1747	; It seems to be possible to shrink the protection-image to 768 bytes.
	1748	; That gives us an additional 256 bytes of code-space.
	1749	; MBR-PROT.ASM,FIXCODE.C,PARTMAIN.ASM and AIR-BOOT.ASM need to be adjusted for that.
	1750	; Also the granularity needs to change from 512 bytes to 256 bytes since
	1751	; 6900h is not a 512-byte boundary.
	1752	;
	1753	; 20120908 - Done.
	1754	;
[37]	1755	MBR_Protection db 'AiR-BOOT MBR-Protection Image'
	1756
[43]	1757	; Just fill.
[51]	1758	;~ db 1024-($-MBR_Protection) dup('M')
	1759	db 768-($-MBR_Protection) dup('M')
[37]	1760
	1761
[51]	1762
	1763
	1764
	1765
	1766
[31]	1767	;==============================================================================
[51]	1768	; Sector 55
	1769	;==============================================================================
	1770	; -----------------------------------------------------------------------------
	1771	; AiR-BOOT CONFIGURATION
	1772	; -----------------------------------------------------------------------------
[30]	1773
[37]	1774	;
	1775	; This section contains the AiR-BOOT configuration.
	1776	; Note that it has a version that should be updated
	1777	; when stuff is added.
	1778	; Also add stuff to the end so that offsets of other
	1779	; variables remain vaild.
	1780	;
[52]	1781	; BOOKMARK: AiR-BOOT Configuration Sector
[45]	1782	ORIGIN 06C00h
[30]	1783
[37]	1784	Configuration:
[46]	1785	; THERE IS A NON-ASCII CHAR HERE !!
	1786	; Your editor may not display this non-ASCII
[37]	1787	; character at the end if the 'AiRCFG-TABLE'
	1788	; string. When this character get's deleted,
	1789	; AiR-BOOT will not function because it cannot
	1790	; find the config-signature which includes this
[51]	1791	; invisible character. The code of the char is: 0adh.
[37]	1792	db 'AiRCFG-TABLE'
[55]	1793	db 01h, 10h, 'U' ; "Compressed" ID String
[37]	1794	; Version 1.02 was for code 1.06, 1.03 was internal
	1795	; and 1.04,1.05 and 1.06 do not exist.
[46]	1796	;
	1797	; 1.07 was used with AB v1.07 and introduced the phase1
	1798	; system-name. For the rest it is compatible with v1.02.
	1799	;
	1800	; 1.0.8 is introduced with AB v1.0.8 and indicates the movement
	1801	; of several components and the packing of the hideparttable.
	1802	; The core configuration has not changed but the generated
	1803	; configuration has. The v1.0.8 installer handles upgrading.
	1804	;
[54]	1805	; It has been decided that uneven minor numbers will be
	1806	; test-versions. Therefore v1.0.8 has been bumbed to v1.1.0.
	1807	;
[37]	1808	; It is not required for the config to have the
	1809	; same version as the code, so in the future
	1810	; the code version might be higher than the
	1811	; config version if there are no changes to the latter.
[46]	1812	;
[7]	1813
[37]	1814	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
	1815	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
[7]	1816
[37]	1817	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
[7]	1818
[37]	1819	CFG_Partitions db 0 ; Count of partitions in IPT
[51]	1820	CFG_MiscFlags db 1 ; Miscellaneous Flags (See EQUates)
[37]	1821	CFG_PartDefault db 0 ; Default-Partition (Base=0)
[7]	1822
[37]	1823	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
	1824	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
	1825	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
	1826	CFG_TimedDelay dw 123 ; Timed Boot - Delay
	1827	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
	1828	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
	1829	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
	1830	CFG_IncludeFloppy db 1 ; Include Floppy Drives in Boot-Menu
	1831	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
[7]	1832	; v0.29+ -> 2 - Detailed Bootmenu
[37]	1833	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
	1834	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
	1835	CFG_PasswordSystem db 0 ; Ask Password when booting System
	1836	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
	1837	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
	1838	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
	1839	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
	1840	CFG_DetectVirus db 0 ; Detect Virus ?
	1841	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
	1842	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
	1843	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
	1844	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
	1845	dw 07A53h
	1846	dw 0E797h
	1847	dw 0A896h
	1848	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
	1849	dw 07A53h
	1850	dw 0E797h
	1851	dw 0A896h
	1852	db 0 ; Rude-Protection - Removed since v0.28b
	1853	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
	1854	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
	1855	; 0 - Do Nothing
	1856	; 1 - Reset Time
	1857	; 2 - Stop Time
	1858	CFG_MakeSound db 0 ; Should be clear ;)
	1859	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
[51]	1860	CFG_ResumeBIOSbootSeq db 1 ; If BIOS Boot Sequence should be resumed
[37]	1861	; 0 - Disabled
	1862	; 1 - CD-ROM
	1863	; 2 - Network
	1864	; 3 - ZIP/LS120
	1865	CFG_CooperBars db 0 ; If Cooper Bars should be shown
	1866	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
	1867	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
	1868	; FFh -> Disabled
	1869	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
	1870	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
	1871	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
	1872	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
	1873	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
	1874	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
	1875	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
[7]	1876
[30]	1877
	1878	;
	1879	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1880	;
	1881
[45]	1882	;
	1883	; Drive Letters.
	1884	;
[52]	1885	; BOOKMARK: Stored Drive Letters
[45]	1886	ORIGIN 06CB0h
[30]	1887
	1888
[51]	1889	; -----------------------------------------------------------------------------
	1890	; DRIVE LETTERS
	1891	; -----------------------------------------------------------------------------
	1892
[45]	1893	;
	1894	; Moved here to make room for packed hiddenparttable.
[51]	1895	; This gets filled when drive-letters that are assigned using the dl-feature.
[45]	1896	;
	1897	DriveLetters db LocIPT_MaxPartitions dup (0)
	1898	; Format is:
	1899	;============
	1900	; Drive-Letter : BYTE (80h-C:, 81h-D:)
	1901	; --------------------> 1 Byte * 45
[30]	1902
[51]	1903
	1904
	1905	; -----------------------------------------------------------------------------
	1906	; INSTALL VOLUME
	1907	; -----------------------------------------------------------------------------
	1908
[45]	1909	;
[37]	1910	; Allways have the name of the installation volume
	1911	; at this offset.
	1912	; So future config changes will not break auto-install.
[45]	1913	;
[52]	1914	; BOOKMARK: Name of eCS Installation Volume
[45]	1915	ORIGIN 06D00h
[37]	1916
[31]	1917	; SET(A)BOOT stores the volume name of the eCS system being installed here.
	1918	; It is truncated to 11 chars because AiR-BOOT currently does not support
	1919	; longer labelnames. The name is also capitalized.
[37]	1920	;eCS_InstallVolume db 12 dup (0)
	1921	;eCS_InstallVolume db 'HIGHLOG' ,0
	1922	;eCS_InstallVolume db 'ECS-MIDDLE',0,0
	1923	;eCS_InstallVolume db 'ECS-HIGH',0,0,0,0
	1924	;eCS_InstallVolume db 'ECS-HIGH',0,'NO',0
[51]	1925	;eCS_InstallVolume db 'KANWEG2',0
	1926	eCS_InstallVolume db 0,'NOPHASEONE' ,0
[30]	1927
[37]	1928	;
	1929	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1930	;
	1931
[51]	1932
	1933	; -----------------------------------------------------------------------------
	1934	; FLOPPY/CDROM/BIOS BOOT ENTRIES
	1935	; -----------------------------------------------------------------------------
	1936
[37]	1937	;
	1938	; 06DABh - 06C00h = 01ABh = 427 bytes.
	1939	; Entries allocated down from 06E00 boundary.
	1940	;
[52]	1941	; BOOKMARK: Floppy/CD-ROM/BIOS Boot Entries
[46]	1942	ORIGIN 06DABh ; 427 Boundry
[37]	1943
	1944	; (432 - 5 = 427)
	1945	AutoDrvLetter db 0
	1946	AutoDrvLetterSerial dd 0
	1947
	1948	; This entry is also 34 bytes long (466 - 34 = 432)
	1949	BIOScontIPTentry:
	1950	db 0, 0, 0, 0, ' '
	1951	db 0, 0FEh, Flags_Bootable
	1952	dw 0 ; No Checksum :)
	1953	db 0, 1, 0
	1954	db 0, 1, 0 ; Location of Partition/Boot Record
	1955	dd 0, 0
	1956
[7]	1957	; VIR variables are for the AiR-BOOT Anti Virus Code
	1958	; Most of them are backups of Interrupt Points, so we can check, if a
	1959	; stealth virus is on-line, we can intercept its call.
	1960	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
[46]	1961	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the
	1962	; system from working, so the user has to press reset.
	1963	; That's saver than a Reboot.
[7]	1964	;
	1965	; If a virus is found on the partition to boot, the system will ONLY halt,
	1966	; nothing more, because we can not remove it. The user shall do it :)
	1967	; Those viruses are detected via a real nasty method...Checksum-Checking of the
	1968	; boot-record, which is to be executed. If it does not match the one in our
	1969	; internal partition table, we will stop. You may however switch this detection
	1970	; off or just reset it by switching 'VIBR Detection'.
	1971
[37]	1972	; 478 - 12 = 466 ; 466 Sub-Part
	1973	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
	1974	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
	1975	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
[30]	1976
[37]	1977	; 478 Boundry (512-34)
	1978	; This entry is also 34 bytes long
	1979	FloppyIPTentry db 0, 0, 0, 0, 'FloppyDrive'
	1980	db 0, 0FFh, Flags_Bootable
	1981	dw 0 ; No Checksum :)
	1982	db 0, 1, 0
	1983	db 0, 1, 0 ; Location of Partition/Boot Record
	1984	dd 0, 0
[30]	1985
	1986
[51]	1987
	1988	; -----------------------------------------------------------------------------
	1989	; INTERNAL PARTITION TABLE (IPT)
	1990	; -----------------------------------------------------------------------------
	1991
[45]	1992	;
	1993	; AiR-BOOT Internal Partition Table (IPT)
	1994	;
[52]	1995	; BOOKMARK: Internal Partition Table
[45]	1996	ORIGIN % (image_size - 0a00h - (image_size - image_size_60secs))
[30]	1997
	1998
[45]	1999	;
	2000	; Rousseau: This is the start of the AiR-BOOT IPT
	2001	;
	2002	PartitionTable db (LocIPT_MaxPartitions * LocIPT_LenOfIPT) dup (0)
	2003	; no-partitions detected... :]
[7]	2004	; db 1, 0, 0, 0, 'Harddisc 1'
	2005	; db 0, 0FFh, Flags_BootAble
	2006	; dw 0 ; No Checksum :)
	2007	; db 0, 0, 1
[46]	2008	; db 0, 0, 1 ; Location of Partition/Boot Record
[7]	2009	; dd 0, 0
	2010
[37]	2011	; Format is:
	2012	;============
	2013	; SerialNumber * 4
	2014	; PartitionName * 11
	2015	; Drive * 1
	2016	; SystemID * 1 (means the partition type)
	2017	; Flags * 1
	2018	; Checksum * 2 (for virus checking)
	2019	; LocationBegin * 3 (where the partition begins)
	2020	; LocationPartTab * 3 (where the partition table is)
	2021	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
	2022	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
	2023	; --------------------> 34 Bytes (total maximum partition-entries = 30)
[7]	2024
[30]	2025
[37]	2026
	2027	; No need to check overlap here because this string will
	2028	; be overwritten if the maximum partition count is reached.
	2029	; So this is not a critical boundary.
[45]	2030	ORG (image_size - 600h - (image_size - image_size_60secs) / 2 - 10)
[37]	2031
	2032	db 'AiRBOOTPAR' ; 1K internal partition table
[30]	2033
	2034
	2035
[51]	2036	; -----------------------------------------------------------------------------
	2037	; HIDDEN PARTITION TABLE (HPT)
	2038	; -----------------------------------------------------------------------------
[30]	2039
[45]	2040	;
	2041	; Hidden Partition Table (6-bit packed as of v1.0.8)
	2042	;
[52]	2043	; BOOKMARK: Hidden Partition Table (packed)
[45]	2044	ORIGIN % (image_size - 600h - (image_size - image_size_60secs) / 2)
[30]	2045
[38]	2046	HidePartitionTable db (LocIPT_MaxPartitions * LocHPT_LenOfHPT) dup (0FFh)
[37]	2047	; Format is:
	2048	;============
	2049	; PartitionPtr : BYTE * 30
[38]	2050	; --------------------> 30 Bytes * 45
[30]	2051
[37]	2052	;
[45]	2053	; Driveletters were here.
	2054	; Moved down to make room for packed hideparttable.
	2055	;
[30]	2056
[37]	2057
[45]	2058	;
	2059	; End of hidden partition table.
	2060	; Check overlap here for security reasons.
	2061	;
	2062	ORIGIN % (image_size - 200h - 5)
[30]	2063
[45]	2064	; 79fa - end of packed hide table
	2065	db 'ABHID' ; 1K internal Hide-partition table
[30]	2066
	2067
	2068
	2069
[51]	2070	;==============================================================================
	2071	; Sector 62
	2072	;==============================================================================
	2073	; -----------------------------------------------------------------------------
	2074	; MBR BACKUP
	2075	; -----------------------------------------------------------------------------
[37]	2076
[45]	2077	;
	2078	; AiR-BOOT MBR Backup.
	2079	;
[52]	2080	; BOOKMARK: MBR Backup
[45]	2081	ORIGIN % (image_size - 200h)
[37]	2082
[31]	2083
[46]	2084	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp',\
	2085	' - Just to fill this sector with something',0
[37]	2086	AirBootRocks db 'AiR-BOOT Rocks!',0
[7]	2087
[45]	2088	db (512 - ($-MBR_BackUpMBR) - 2) dup('M')
[36]	2089
[45]	2090	; End of Image signature.
	2091	;
	2092	ORIGIN % (image_size - 2)
	2093	dw 0BABEh
[30]	2094
	2095
[45]	2096	;
	2097	; End of Image.
	2098	;
	2099	ORIGIN % (image_size)
[30]	2100
	2101
[51]	2102
[30]	2103	;
[51]	2104	; Terminate LDRIMAGE segment.
[30]	2105	;
[51]	2106	IFDEF SEGMENTED
[43]	2107	LDRIMAGE ENDS
[51]	2108	ENDIF
[30]	2109
[37]	2110
[51]	2111
	2112
	2113
	2114
	2115
	2116	;##############################################################################
	2117	; BSS SEGMENT
	2118	;##############################################################################
	2119
[52]	2120	; BOOKMARK: BSS Segment
[51]	2121
[30]	2122	;
[51]	2123	; Open BSS segment.
[30]	2124	;
[51]	2125	IFDEF SEGMENTED
[37]	2126	VOLATILE SEGMENT USE16 PUBLIC 'BSS'
	2127	ENDIF
	2128
[46]	2129
	2130
[30]	2131	sobss:
[31]	2132	;------------------------------------------------------------------------------
[46]	2133
[37]	2134	;
[46]	2135	; Removed ORG for BSS data to be more compatible
[38]	2136	; with segment-concatenated layout.
[37]	2137	;
[42]	2138	; What happens before this space ??
	2139	; If org 0 corruption occurs.
[46]	2140	;
	2141
	2142	;
[45]	2143	; Filling hiddenparttable goes out-of-bounds !
[46]	2144	; Fixed with 6-bit packing.
[42]	2145	;
[37]	2146
[46]	2147	;
	2148	; If segmented, offsets are relative to the BSS segment.
	2149	; They are resolved at link-time.
	2150	; If not segmented, offsets are relative to the CODE segment.
	2151	;
	2152	IFDEF SEGMENTED
	2153	ORG 02400h
	2154	ELSE
	2155	ORG 0A000h
	2156	ENDIF
	2157
	2158
[51]	2159	; -----------------------------------------------------------------------------
	2160	; START OF BSS DATA
	2161	; -----------------------------------------------------------------------------
	2162
[7]	2163	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
	2164	BeginOfVariables:
[51]	2165
	2166
	2167	; -----------------------------------------------------------------------------
	2168	; SECTOR BUFFERS
	2169	; -----------------------------------------------------------------------------
[52]	2170	; BOOKMARK: Sector Buffers
[46]	2171	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
[51]	2172	PBRSector db 512 dup (?) ; Temporary Sector for JFS/HPFS writeback
[46]	2173	LVMSector db 512 dup (?) ; Temporary Sector for LVM
	2174	TmpSector db 512 dup (?) ; Temporary Sector
	2175	Scratch db 256 dup (?) ; Scratch buffer
[30]	2176
[51]	2177	; -----------------------------------------------------------------------------
	2178	; NEW PARTITION TABLE
	2179	; -----------------------------------------------------------------------------
[7]	2180	; Everything used to build a new IPT and reference it to the old one
[52]	2181	; BOOKMARK: New Partition Table
[46]	2182	NewPartTable db 1536 dup (?) ; New Partition Table
[43]	2183
[51]	2184
	2185	; -----------------------------------------------------------------------------
	2186	; NEW HIDE PARTITION TABLE
	2187	; -----------------------------------------------------------------------------
[52]	2188	; BOOKMARK: New Hide-Partition Table
[51]	2189	NewHidePartTable db LocIPT_MaxPartitions * LocHPT_LenOfHPT dup (?)
[7]	2190
[51]	2191	;~ even
	2192
	2193	; -----------------------------------------------------------------------------
	2194	; NEW DRIVE LETTERS
	2195	; -----------------------------------------------------------------------------
[52]	2196	; BOOKMARK: Logical Drive-Letters
[51]	2197	NewDriveLetters db LocIPT_MaxPartitions dup (?)
[7]	2198
[51]	2199	;~ even
	2200
	2201	; -----------------------------------------------------------------------------
	2202	; PARTITION SIZE TABLE
	2203	; -----------------------------------------------------------------------------
[46]	2204	; Size-Table (6 bytes per partition)
[52]	2205	; BOOKMARK: Partition Size Table
[51]	2206	PartitionSizeTable db LocIPT_MaxPartitions * 6 dup (?)
[46]	2207
[51]	2208
	2209	; -----------------------------------------------------------------------------
	2210	; PARTITION POINTERS
	2211	; -----------------------------------------------------------------------------
[49]	2212	; Maximum is 52 word entries till now
[52]	2213	; BOOKMARK: Partition Pointers
[46]	2214	PartitionPointers dw 52 dup (?)
	2215
	2216	; Count of total Partition Pointers
	2217	PartitionPointerCount db ?
	2218
[51]	2219	; -----------------------------------------------------------------------------
	2220	; XREF TABLE
	2221	; -----------------------------------------------------------------------------
	2222
[46]	2223	; X-Reference Table (holds new partnr, index is old part nr)
[52]	2224	; BOOKMARK: Xref Table
[51]	2225	PartitionXref db LocIPT_MaxPartitions dup (?)
[46]	2226
[51]	2227	; -----------------------------------------------------------------------------
	2228	; VOLUME LETTERS
	2229	; -----------------------------------------------------------------------------
	2230
[46]	2231	; Volume-Letters
	2232	; 0 - no LVM support
	2233	; 1 - LVM support, but no letter
	2234	; 'C'-'Z' - assigned drive letter
[52]	2235	; BOOKMARK: Volume Drive Letters
[51]	2236	PartitionVolumeLetters db LocIPT_MaxPartitions dup (?)
[46]	2237
	2238
	2239
[51]	2240	; -----------------------------------------------------------------------------
	2241	; MISC VARS AND FLAGS
	2242	; -----------------------------------------------------------------------------
[52]	2243	; BOOKMARK: Misc Vars and Flags
[46]	2244	TotalHarddiscs db ? ; Total harddrives (by POST)
	2245	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
	2246	NewPartitions db ? ; Freshly found partitions
[37]	2247	; Independent of SaveConfiguration
[46]	2248	TooManyPartitions db ? ; Non-zero if too many partitions found
[7]	2249
[46]	2250	VideoIO_Segment dw ? ; Segment for Video I/O
[7]	2251
[46]	2252	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
	2253	ExtendedAbsPosSet db ? ; If Absolute Position set
[7]	2254
[46]	2255	CurPartition_Location dw 4 dup (?) ; Where did current partition come from?
	2256	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
	2257	; (filled out by PreCrap)
	2258	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
[37]	2259	; (for detailed error message)
[7]	2260
[29]	2261	; [Linux support removed since v1.02]
	2262	;GotLinux db ? ; 1-Linux found
[7]	2263
[51]	2264
	2265	; -----------------------------------------------------------------------------
	2266	; MENU RELATED VARS
	2267	; -----------------------------------------------------------------------------
[46]	2268	Menu_EntrySelected db ? ; Which partition we boot this time...
	2269	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
	2270	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
	2271	Menu_TotalParts db ? ; Copy of CFG_BootParts
	2272	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
	2273	Menu_EntryDefault db ? ; Default Entry in filtered View
	2274	Menu_EntryLast db ? ; LastBooted Entry in filtered View
	2275	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
[7]	2276	; - All adjusted to menu locations
	2277
[51]	2278	; -----------------------------------------------------------------------------
	2279	; PARTITION RELATED VARS
	2280	; -----------------------------------------------------------------------------
[46]	2281	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
	2282	PartSetup_ActivePart db ? ; Active Partition
	2283	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
	2284	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
	2285	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
[7]	2286
[51]	2287	; -----------------------------------------------------------------------------
	2288	; TIMER / SETUP RELATED VARS
	2289	; -----------------------------------------------------------------------------
[46]	2290	TimedBootEnable db ? ; Local Enable/Disable for timed boot
	2291	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here;)
	2292	TimedSecondLeft db ? ; How many seconds are left till boom ?
	2293	TimedSecondBack db ? ; To get a modification noticed
	2294	TimedBootUsed db ? ; Timed Boot used for bootup ?
	2295	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
	2296	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
	2297	SETUP_ExitEvent db ? ; Exit Event to end SETUP
	2298	TempPasswordEntry db 17 dup (?)
	2299	SETUP_OldPwd db 17 dup (?)
	2300	SETUP_NewPwd db 17 dup (?)
	2301	SETUP_VerifyPwd db 17 dup (?)
	2302	StartSoundPlayed db ?
	2303	ChangePartNameSave db ? ; Save label after user-edit ?
	2304	SyncLvmLabels db ? ; Sync LVM labels after user-edit ?
[7]	2305
[51]	2306
	2307	; -----------------------------------------------------------------------------
	2308	; FX RELATED VARS
	2309	; -----------------------------------------------------------------------------
[37]	2310	FX_UseCount dw ?
	2311	FX_OverallTimer dw ?
	2312	FX_WideScrollerTimer dw ?
	2313	FX_WideScrollerCurPos dw ?
	2314	FX_WideScrollerSpeed db ?
	2315	FX_WideScrollerSpeedState db ?
	2316	FX_WideScrollerDirection db ?
	2317	FX_WideScrollerAbsDirection db ?
	2318	FX_WideScrollerBounceSpeed db ?
	2319	FX_CooperBarsTimer dw ?
[7]	2320
[51]	2321	; Dynamically Generated Tables - do not need to get initialized with NUL
	2322	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
	2323	FX_CooperState db 7 dup (?)
	2324	FX_SinusPos db 7 dup (?)
	2325	FX_CooperPos dw 7 dup (?)
	2326
	2327
	2328	; -----------------------------------------------------------------------------
	2329	; CHARSET BUFFER
	2330	; -----------------------------------------------------------------------------
	2331	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
	2332
	2333	; -----------------------------------------------------------------------------
	2334	; LVM CRC TABLE
	2335	; -----------------------------------------------------------------------------
	2336	LVM_CRCTable dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
	2337
[46]	2338	;~ ; [Linux support removed since v1.02]
	2339	;~ FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
	2340	;~ FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
	2341	;~ FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
	2342	;~ FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
	2343	;~ FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
	2344	;~ FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
	2345	;~ FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
	2346	;~ FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
	2347	;~ FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
	2348	;~ FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
	2349	;~ LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
	2350	;~ LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
	2351	;~ LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
[7]	2352
	2353
[30]	2354	;
	2355	; Rousseau: added some stuff.
	2356	;
[51]	2357	; -----------------------------------------------------------------------------
	2358	; ECS PHASE1 RELATED
	2359	; -----------------------------------------------------------------------------
[49]	2360	Phase1Active db ?
	2361	OldPartitionCount db ?
[30]	2362
[51]	2363
	2364	; -----------------------------------------------------------------------------
	2365	; DISK PARAMETERS
	2366	; -----------------------------------------------------------------------------
[30]	2367	;EVEN
[37]	2368	HugeDisk db MaxDisks dup(?)
	2369	TrueSecs dd MaxDisks dup(?)
[30]	2370
	2371	; BIOS geometry of the boot-drive
	2372	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
	2373	; If Int13X is supported those values are used, otherwise the legacy values.
[37]	2374	BIOS_Cyls dd MaxDisks dup(?)
	2375	BIOS_Heads dd MaxDisks dup(?)
	2376	BIOS_Secs dd MaxDisks dup(?)
	2377	BIOS_Bytes dw MaxDisks dup(?)
	2378	BIOS_TotalSecs dq MaxDisks dup(?)
[30]	2379
	2380	; LBA geometry of the boot-drive
	2381	; Note that these values are taken from the BPB of a partition boot-record
[37]	2382	LVM_Cyls dd MaxDisks dup(?)
	2383	LVM_Heads dd MaxDisks dup(?)
	2384	LVM_Secs dd MaxDisks dup(?)
	2385	LVM_Bytes dw MaxDisks dup(?)
	2386	LVM_TotalSecs dq MaxDisks dup(?)
[30]	2387
	2388	; OS/2 geometry of the boot-drive
	2389	; Note that these values are taken from the BPB of a partition boot-record
[37]	2390	LOG_Cyls dd MaxDisks dup(?)
	2391	LOG_Heads dd MaxDisks dup(?)
	2392	LOG_Secs dd MaxDisks dup(?)
	2393	LOG_Bytes dw MaxDisks dup(?)
	2394	LOG_TotalSecs dq MaxDisks dup(?)
[30]	2395
[51]	2396	; Get's initialized at startup to: 00000011111111111111111111111100b
	2397	; Meaning A,B not free; C-Z free, rest unused. (right to left)
	2398	; Each partition with an assigned drive-letter clears a bit in this map.
	2399	FreeDriveletterMap dd ?
[30]	2400
[51]	2401	; LBA address of master LVM sector, zero if non-existant
	2402	MasterLVMLBA dd ?
[30]	2403
[51]	2404
	2405	; -----------------------------------------------------------------------------
	2406	; I13X BUFFER
	2407	; -----------------------------------------------------------------------------
[46]	2408	;
[52]	2409	; BOOKMARK: Temporary buffer for 48h INT13X bios call.
[46]	2410	;
[30]	2411
[46]	2412	; Size of the buffer.
	2413	; this param must be filled in.
	2414	; Code inserts it.
	2415	i13xbuf dw 1 dup (?)
[30]	2416
[46]	2417	; The buffer itself.
	2418	db 126 dup(?)
	2419
	2420	; Size of buffer calculated.
	2421	; (excluding the size word at the start).
	2422	i13xbuf_size = $-offset i13xbuf-2
	2423
	2424	; Some debug area.
[44]	2425	ott db 512 dup(?)
	2426
[51]	2427
	2428	; End of transient variables.
	2429	EndOfVariables:
	2430
	2431
	2432
	2433
	2434	; -----------------------------------------------------------------------------
	2435	; OLD AND NEW STACKS
	2436	; -----------------------------------------------------------------------------
[52]	2437	; BOOKMARK: Storage for Old and New Stack Pointers
[51]	2438	;
	2439	; These need to be outside the variable section because AiR-BOOT can restart
	2440	; itself in debug-mode. If the OldSP and OldSS would be in the variable area,
	2441	; they would be cleared on AiR-BOOT restart.
	2442	;
	2443
	2444	; The variable section is cleared word-wise, so it could clear one byte extra
	2445	; depending on the alignment and size. This DD prevents the OldSP and OldSS
	2446	; to be partly overwritten by the clearing routine.
	2447	dd ?
	2448
	2449	; SS:SP from before our relocation.
	2450	; The registers values when the BIOS transferred control to us were pushed
	2451	; on this stack.
	2452
	2453	OldSP dw ?
	2454	OldSS dw ?
	2455
	2456	; SS:SP currently in use.
	2457	; They are temporarily dumped here so we can pop the resgisters from
	2458	; the old stack to display them in debug mode.
	2459	CurrentSP dw ?
	2460	CurrentSS dw ?
	2461
	2462
	2463
	2464	;
	2465	; End of BSS segment.
	2466	;
[30]	2467	eobss:
	2468
[51]	2469	;
	2470	; Close BSS segment.
	2471	;
[37]	2472	IFDEF SEGMENTED
[46]	2473	VOLATILE ENDS
[37]	2474	ELSE
[46]	2475	LDRIMAGE ENDS
[37]	2476	ENDIF
[43]	2477
[52]	2478	; BOOKMARK: End of Module
[45]	2479	END AiR_BOOT
[30]	2480

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