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AIR-BOOT.ASM@ 35

Last change on this file since 35 was 35, checked in by Ben Rietbroek, 13 years ago

Corrected CRC calculations in installers and setaboot [2012-01-21]

Fixes

o Corrected CRC calculations on AiR-BOOT configuration in the

installers and setaboot. They are now v1.07 compatible again.

Note

This commit and all following commits upto and including the RC3
commit [2012-09-09] are delayed commits from a local repository.
Also, the RC (Release Candidate) naming of the corresponding commits
is a bit misleading. One would label a revision with RC when near to
a final release. Since many things have changed between RC1,RC2 & RC3,
these RC's should be interpreted as mile-stones.

WARNING!!

All commits upto and including the commit of [2012-05-13] contain
a severe bug!! Building from these sources and then disabling
the 'force LBA' feature while also using the drive-letter feature or
editing the label can destroy the MBR on all attached disks!!
DO NOT DISABLE 'FORCE LBA USAGE' WHEN BUILT FROM THE ABOVE COMMITS!!

File size: 66.6 KB

Rev	Line
[29]	1	; AiR-BOOT (c) Copyright 1998-2008 M. Kiewitz
	2	;
	3	; This file is part of AiR-BOOT
	4	;
	5	; AiR-BOOT is free software: you can redistribute it and/or modify it under
	6	; the terms of the GNU General Public License as published by the Free
	7	; Software Foundation, either version 3 of the License, or (at your option)
	8	; any later version.
	9	;
	10	; AiR-BOOT is distributed in the hope that it will be useful, but WITHOUT ANY
	11	; WARRANTY: without even the implied warranty of MERCHANTABILITY or FITNESS
	12	; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
	13	; details.
	14	;
	15	; You should have received a copy of the GNU General Public License along with
	16	; AiR-BOOT. If not, see <http://www.gnu.org/licenses/>.
	17	;
[7]	18
[30]	19	; -------------------
	20	; Rousseau: # Fixes #
	21	; -------------------
[31]	22	;
[35]	23	; v1.0.8
	24	; ------
	25	; - Changed version format to be more WarpIN compatible.
	26	; This is a cosmetic change only.
[31]	27	; - Fixed driveletter feature which was broken in v1.07.
	28	; - Reworked MBR-code to provide two I13X signatures.
[35]	29	; - Fixed booting older eCS installations on HPFS
	30	; - Fixed booting Windows when installed in logical partition
[32]	31	; with loader on FAT32.
[31]	32	; - Corrected contact links.
[34]	33	; - Location of AUX parameters has changed.
[35]	34	; - Fixed DOS installer (AIRBOOT.COM)
	35	;
[32]	36	; NOTE:
	37	; AB v1.07 had a bug with saving and loading the correct size of the
	38	; configuration. Therefore the CRC over the config was also calculated
	39	; wrongly.
	40	; While AB v1.0.8 fixes this, it has to use the v1.07 way of CRC calculation.
[35]	41	; Otherwise SET(A)BOOT from the eCS v2.1 would break because it sees
	42	; a corrupt AiR-BOOT configuration.
[32]	43	; This means that the CRC over the AB config is calculated over 5 sectors
	44	; instead of 7, just like in v1.07.
[31]	45	;
[35]	46	; NOTE:
	47	; Because of space constraints most of the debug code has been commented
	48	; out in this version.
	49	; Possibly it will be re-enabled after code cleanup and changing to JWasm.
	50	;
	51	;
[31]	52	; v1.07
	53	; -----
[30]	54	; # Huge Drives and LVM #
	55	; When using disks >512GB under eComStation, the drive geometry changes to
	56	; 127 or 255 sectors per track. Since LVM-info is written at the last sector
	57	; of a track, and AiR-BOOT uses the geometry of the MBR, it cannot find the
	58	; LVM-info and the eCS partition / volume bootsector.
	59	; This has been fixed.
	60	; Now, when an eCS-partition is discovered and the drive is >512GB, AiR-BOOT
	61	; will use the eCS geometry to locate the LVM-info and the bootsector.
	62	;
	63	; # Special loader handling #
	64	; The special handling of partition boot-loaders has been enhanced to
	65	; enable booting of legacy sysems on huge drives with or without OS/2
	66	; extended geometry.
	67	;
	68	; # eComStation boot-through after phase 1 #
	69	; A special functionality is implemented to directly boot the newly
	70	; installed system ; when installing eCS without showing the Boot Menu,
	71	; independant of user settings.
	72	; This works in conjuntion with the OS/2 specific SETABOOT.EXE program,
	73	; also part of this AiR-BOOT package.
	74	;
	75	; # Math, Debug, Conv and Aux modules #
	76	; These are used for 32-bit arithmatic on 16-bit code,
	77	; debug the booting process, converting between data-types
	78	; and outputting log-data to the com-port.
[35]	79	;
	80	;
	81	; v1.06
	82	; -----
	83	; This is the last version developed by Martin Kiewitz.
	84	; It serves as the base for the versions above.
	85	; Please do not post your feedback on sourceforge or bother Martin with
	86	; regard to the above versions.
	87	; Use the eCS bug-tracker or the Trac project-page at netlabs.
	88	; See the documentation for the correct contact information.
[30]	89
	90
[31]	91	;------------------------------------------------------------------------------
	92	; AiR-BOOT / MAIN-CODE
	93	;------------------------------------------------------------------------------
[30]	94	;
[7]	95
[30]	96
	97	; ----------------------------
	98	; Rousseau: # JUMPS disabled #
	99	; ----------------------------
	100	; We actually don't want to use this directive because it generates extra
	101	; NOP instructions that we can do without.
	102	; Relative conditional jumps that are out-of-range are manually reworked by
	103	; skipping an unconditional jump to the target on base of complementary
	104	; condition logic and temporary labels.
[31]	105	; TASM also has a bug in that when the .ERR2 directive is used when
	106	; the .386 directive is in effect, the JUMPS directive is also active
	107	; and cannot be turned off.
[30]	108	; NOJUMPS seems to have no effect in this situation.
	109	; In this case 4 NOP instructions are generated after forward referencing jump
	110	; instructions, to allow for automatic recoding by TASM.
	111	; This seems to be a TASM bug. (v2,v3,v4, dunno v5)
	112	;
	113	;JUMPS
	114	;
	115
	116	;
	117	; If defined then each module is prefixed with it's name.
	118	; This is used for debugging purposes.
	119	; It should be off in release code.
	120	;
	121	;ModuleNames equ 1
	122
	123
	124
	125	;
	126	; The first harddisk is BIOS coded 80h.
	127	; This makes a total of 128 disk could be supported using this coding.
	128	; This value is used to store disk-information and this info is allocated
	129	; in the BSS.
	130	;
[31]	131	MaxDisks equ 64
[30]	132
	133	;
	134	; If defined then include DEBUG.ASM and output debug-info to serial-port.
	135	;
[32]	136	;AuxDebug equ 1
[30]	137
[31]	138	; Com-port for debugging, 0 is disabled
	139	BiosComPort equ 0
[30]	140
	141
[31]	142	;
	143	; bits 7-5 = datarate
	144	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
	145	; bits 4-3 = parity
	146	; (00 or 10 = none, 01 = odd, 11 = even)
	147	; bit 2 = stop-bits
	148	; (set = 2 stop-bits, clear = 1 stop-bit)
	149	; bits 1-0 = data-bits
	150	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
	151	;
[30]	152
[31]	153	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
	154	AuxInitParms equ 11100011b
	155
	156	; Default word value for BIOS_AuxParms variable
	157	; Note that is has moved since v1.07
	158	BIOS_AuxParmsDefault equ (AuxInitParms SHL 8) OR BiosComPort
	159
[30]	160	;
[7]	161	; If ReleaseCode is not defined, it will produce debug-able code...
[30]	162	;
[31]	163	ReleaseCode equ -1
[7]	164
[31]	165
	166
	167
	168
[30]	169	;
[7]	170	; All Special Equs for this project
[30]	171	;
[7]	172
[31]	173	; Use different addresses depending on whether in pre-boot
	174	; or debug environment.
[7]	175	IFDEF ReleaseCode
[31]	176	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
[30]	177	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
[7]	178	ELSE
[31]	179	StartBaseSeg equ 03A98h ; Adjust to DOS segment
	180	; Rousseau: where does this value
	181	; come from ?
	182	; Should be CS;
	183	; Rectified in actual code by
	184	; ignoring this value.
	185	StartBasePtr equ 00100h ; We are a .com file,DOS is active
[7]	186	ENDIF
	187
[30]	188	; Address labels after code-move
[31]	189	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
[30]	190	BootBasePtr equ 0h ; We put our MBR to this location
[31]	191	BootBaseExec equ BootBasePtr+offset MBR_RealStart
	192	StackSeg equ 07000h ; Put the stack below the code
[30]	193
	194	; Video pages, no INT 10h is used for menu-drawing etc.
[7]	195	VideoIO_Page0 equ 0B800h
	196	VideoIO_Page1 equ 0B900h
	197	VideoIO_Page2 equ 0BA00h
	198	VideoIO_Page4 equ 0BC00h
	199	VideoIO_FXSegment equ 0A000h
	200
[30]	201	; Include
[29]	202	Include ..\INCLUDE\asm.inc
[30]	203	;Include ..\INCLUDE\DOS\airboot.inc ; does not exist anymore
[7]	204
[30]	205	; Special line-drawing characters
[7]	206	TextChar_WinLineRight equ 0C4h ; 'Ä'
	207	TextChar_WinLineDown equ 0B3h ; '³'
	208	TextChar_WinRep1 equ 0D1h ; 'Ñ'
	209	TextChar_WinRep2 equ 0C5h ; 'Å'
	210	TextChar_WinRep3 equ 0CFh ; 'Ï'
	211	TextChar_WinRep4 equ 0B5h ; 'µ'
	212	TextChar_WinRep5 equ 0C6h ; 'Æ'
	213	TextChar_WinRep6 equ 0D8h ; 'Ø'
	214
	215	; Offsets for Partition-Entries in MBR/EPRs
[31]	216	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
	217	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
	218	LocBRPT_BeginCHS equ 1 ; Combined 10-bits cyl with 6 bits
	219	LocBRPT_BeginHead equ 1 ; Start head (0<=H<255) 255 is invalid !
	220	LocBRPT_BeginSector equ 2 ; Start sector (1<=S<=255)
	221	LocBRPT_BeginCylinder equ 3 ; Start cylinder (0<=C<[1024,16384,65536,n])
	222	LocBRPT_SystemID equ 4 ; Type of system using the partition
	223	LocBRPT_EndCHS equ 5 ; Same for end of partition
[7]	224	LocBRPT_EndHead equ 5
	225	LocBRPT_EndSector equ 6
	226	LocBRPT_EndCylinder equ 7
[31]	227	LocBRPT_RelativeBegin equ 8
	228	LocBRPT_AbsoluteLength equ 12
[7]	229
[31]	230	LocBR_Magic equ 510
[7]	231
[29]	232
[34]	233	; Used as a quick compare in LVM.ASM
	234	LocLVM_SignatureByte0 equ 02h
[30]	235
[34]	236	; Offsets for LVM Information Sector.
	237	; These are relative to the start of the LVM sector.
	238	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
	239	LocLVM_CRC equ 08h ; CRC is a DWORD
	240	LocLVM_Heads equ 1ch ; Number of heads
	241	LocLVM_Secs equ 20h ; Sectors per Track
	242	LocLVM_DiskName equ 24h ; Name of the disk
	243	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
	244	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
[30]	245
[34]	246	; An LVM info-sector can contain information on max. 4 partitions.
	247	; All 4 entries will be used when there 4 primary partitions defined.
	248	; For logical partitions, the LVM info-sector is located below the start
	249	; of the logical partition and only one LVM entry is used in that logical
	250	; LVM info-sector.
	251	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
[30]	252
[34]	253	; Offsets for LVM entry.
	254	; These are relative to the start of the entry.
	255	LocLVM_VolumeID equ 00h ; is DWORD
	256	LocLVM_PartitionID equ 04h ; is DWORD
	257	LocLVM_PartitionSize equ 08h ; is DWORD
	258	LocLVM_PartitionStart equ 0ch ; is DWORD
	259	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
	260	LocLVM_Startable equ 11h ; is Startable (newly installed system)
	261	LocLVM_VolumeLetter equ 12h ; is Drive Letter for partition (C-Z or 0)
	262	LocLVM_Unknown equ 13h ; unknown BYTE
	263	; Truncated to 11 chars when displayed in menu.
	264	; MiniLVM sets both to the same value.
	265	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
	266	; Same goes for LocLVM_DiskName.
	267	LocLVM_VolumeName equ 14h ; 20 bytes
	268	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
[30]	269
	270
[34]	271
[7]	272	; Offsets for IPT (Internal Partition Table)
[31]	273	LocIPT_MaxPartitions equ partition_count ; 45 in v1.07
[30]	274	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
	275	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
	276	LocIPT_Serial equ 0 ; Serial from MBR ?
[31]	277	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
	278	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
	279	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
[30]	280	LocIPT_Flags equ 17 ; AiR-BOOT Flags for partition (see below)
	281	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
	282	LocIPT_LocationBegin equ 20 ; Begin of Partition
	283	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
	284	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
	285	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
[7]	286
[30]	287	; AiR-BOOT IPT-Flags
	288	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
	289	LocIPT_DefaultNonBootFlags equ 00000010b ; ...VIBR Detection is always on
[7]	290
	291	Flags_BootAble equ 00000001b
	292	Flags_VIBR_Detection equ 00000010b
	293	Flags_HideFeature equ 00000100b
[30]	294	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
	295	Flags_ExtPartMShack equ 00010000b ; Extended Partition M$-Hack req ?
[7]	296	Flags_NoPartName equ 01000000b
[30]	297	Flags_NowFound equ 10000000b ; temp only in OldPartTable
	298	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
[7]	299
[30]	300	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
	301	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
	302	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
	303	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
[7]	304
[30]	305	; Navigation keys
[7]	306	Keys_Up equ 48h
	307	Keys_Down equ 50h
	308	Keys_Left equ 4Bh
	309	Keys_Right equ 4Dh
	310	Keys_PageUp equ 49h
	311	Keys_PageDown equ 51h
	312	Keys_GrayPlus equ 4Eh
	313	Keys_GrayMinus equ 4Ah
	314	Keys_Plus equ 1Bh
	315	Keys_Minus equ 35h
	316	Keys_Enter equ 1Ch
	317	Keys_ESC equ 1h
	318	Keys_F1 equ 3Bh
	319	Keys_F10 equ 44h
	320	Keys_C equ 2Eh ; Add. Check auf Ctrl!
	321	Keys_Y equ 2Ch
	322	Keys_Z equ 15h
	323	Keys_N equ 31h
	324	Keys_TAB equ 0Fh
	325	Keys_Delete equ 53h
	326	Keys_Backspace equ 0Eh
	327	Keys_Space equ 20h
	328
	329	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
	330
	331
[30]	332	; ------------------------------------------
	333	; Rousseau: # Changed this from .386 to .286
	334	; ------------------------------------------
	335	; Because of the TASM-bug the processor had to be changed to turn JUMPS
	336	; off. Existing movzx instructions were replaced with 286 equivalent code.
	337	; Out of range relative jumps have been recoded.
	338	; AiR-BOOT can now run on a 286 processor :-)
	339	.286
	340
	341	; This influences the uses directive and other stuff,
	342	; like calling-style.
	343	; The model itself,large, has no effect because we generate
	344	; a binairy image and not a segmented executable.
	345	.model large, basic
	346
	347	; Our code-segment starts here.
	348	; We are running in 16-bit and we like it
[7]	349	code_seg segment public use16
	350	assume cs:code_seg, ds:code_seg, es:nothing, ss:nothing
	351
[30]	352
	353
[31]	354	;==============================================================================
	355	; Sector 1
[30]	356
	357
	358	; We are not a .com file at 100h but a binary image
	359	; of which only the 1st sector gets loaded at 07c00h.
	360	org 00000h ; Sector 1
	361
	362	; Start of sector 1
	363	; This is the MBR, note the AiRBOOT signature, it's date (2006), version and
	364	; language.
	365	; Version 1.07 was intruduced in 2011.
	366	; It fixes issues with huge drives and lvm and more.
	367
	368	sos1:
	369
	370	; ---------------------------------------------
	371	; Rousseau: # Combined letter and jump offset #
	372	; ---------------------------------------------
	373	; My guess is Martin had a short jump followed by the AiRBOOT signature at first.
	374	; Then he encountered strange behaviour by some M$ operating-systems if the
	375	; the first insruction was not a CLI.
	376	; But there was no room to insert the CLI and of course he did not want to
	377	; change the location of the AiRBOOT signature.
	378	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
	379	; jump that uses the 'A' of the AiRBOOT signature as the jump displacement.
	380
	381
[31]	382	;------------------------------------------------------------------------------
[30]	383	AiR_BOOT: cli ; Some M$ operating systems need a CLI
[31]	384	; here otherwise they will go beserk
[30]	385	; and will do funny things during
	386	; boot phase, it's laughable!
[31]	387	db 0EBh ; JMP-Short -> MBR_Start
	388	; Uses the 'A' as the displacement !
[35]	389	db 'AiRBOOT', 20h, 01h, 20h, 12h, 01h, 08h, TXT_LanguageID
[30]	390
[35]	391	; ID String, Date (DD,MM,CC,YY), Version Number, Language ID
[30]	392	db 1 ; Total Sectors Count,
[31]	393	; Will get overwritten by FIXBSET.exe
[30]	394	MBR_CheckCode dw 0 ; Check-Sum for Code
[7]	395
[30]	396	;
	397	; No single instruction below should be changed, added or removed in the code
	398	; below as this will cause the jump-link to go haywire.
[31]	399	;
[30]	400	MBR_Start: sti ; This opcode is dedicated to:
	401	cld ; =MICROSOFT JUMP DEPARTMENT=
	402
	403	; Setup some base stuff
	404	; AX got loaded wrongly for debug, changed the instructions
	405	; without modifying the number of bytes.
[31]	406	; Don't comment-out the redundant instruction below because this
	407	; will change the number of bytes and break the jump-chain.
[30]	408	mov ax, StartBaseSeg ; The segment we are moving ourself from (NOT USED)
	409	;mov ds, ax
	410	push cs
	411	pop ds
	412	mov si, StartBasePtr ; The offset we are moving ourself from
	413	mov ax, BootBaseSeg ; The target segment we are moving ourself to
[29]	414	mov es, ax
[30]	415	mov di, BootBasePtr ; The target offset we are moving ourself to
	416
	417	; Depending on pre-boot or debug,
	418	; only move first 512 bytes or the whole she-bang++ (65400 bytes)
[7]	419	IFDEF ReleaseCode
[30]	420	mov cx, 256 ; Pre-boot environment
[7]	421	ELSE
[31]	422	mov cx, 32700 ; Debug environment (move ~64kB)
[7]	423	ENDIF
[30]	424
	425	;
	426	; LET's MOVE OURSELVES !
	427	;
[7]	428	rep movsw
[30]	429
[31]	430	; Code an intersegment jump to the new location
[7]	431	db 0EAh
[30]	432	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
	433	dw BootBaseSeg ; This is 08000h
[7]	434	; jmp far ptr BootBaseSeg:BootBaseExec
	435
[30]	436
	437	;
	438	; Some MBR-functions to provide absolute minimum functionality.
	439	;
	440
	441	;
	442	; Entry-point for halting the system.
	443	;
[7]	444	MBR_HaltSystem:
	445	mov ax, 8600h
	446	xor cx, cx
	447	mov dx, 500
	448	int 15h ; Wait to display the whole screen :]
[29]	449	MBR_HaltSys: cli
	450	jmp MBR_HaltSys
[7]	451
[31]	452
	453
	454	; Comport settings
	455	; It had to be moved to create room for the double I13X
	456	; signature.
	457	; It cannot be in the config-area (sector 55)
	458	; because that area
	459	; is crc-protected.
	460	BIOS_AuxParms dw BIOS_AuxParmsDefault
	461
[30]	462	;
[31]	463	; Reserved space
	464	; Should check overflow here, later...
[30]	465	;
[31]	466	reserved db 6 dup(0)
[30]	467
[31]	468
	469	;
	470	; We jump here after the first instructions of the
	471	; AiR-BOOT signature.
	472	; So we ensure the jump is always at this offset.
	473	org 044h
	474	jmp MBR_Start ; We jump here, because I needed to
	475	; insert a CLI on start and did not
	476	; want to change AiR-BOOT detection
	477	; because of Microsoft inventions...
[30]	478	;
	479	; Entry-point when loading fails.
	480	;
[7]	481	db 'LOAD ERROR!', 0
[30]	482	MBR_LoadError Proc Near
	483	mov si, offset $-12
	484	push cs
	485	pop ds
	486	call MBR_Teletype
	487	MBRLE_Halt:
	488	jmp MBRLE_Halt
	489	MBR_LoadError EndP
[7]	490
[30]	491
	492	;
	493	; Entry-point when saving fails.
	494	;
[7]	495	db 'SAVE ERROR!', 0
[30]	496	MBR_SaveError Proc Near
	497	mov si, offset $-12
	498	push cs
	499	pop ds
	500	call MBR_Teletype
	501	MBRSE_Halt:
	502	jmp MBRSE_Halt
	503	MBR_SaveError EndP
[7]	504
[30]	505
	506	; Put text on the screen using the BIOS tele-type function.
	507	; No attributes like color are supported.
[7]	508	; In: SI - Pointer to begin of string (EOS is 0)
	509	; Destroyed: SI
	510	MBR_Teletype Proc Near Uses ax bx cx
[30]	511	mov ah, 0Eh
	512	mov bx, 7
	513	MBRT_Loop:
	514	lodsb
	515	or al, al
	516	jz MBRT_End
	517	int 10h
	518	jmp MBRT_Loop
	519	MBRT_End:
	520	ret
[7]	521	MBR_Teletype EndP
	522
[30]	523	;
	524	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
	525	;
	526
[7]	527	; In: BX - Base Check, DS:SI - Pointer to 512-byte-area to be included
	528	; Out: BX - Base Check Result
	529	; Destroyed: SI will get updated (+512)
	530	MBR_GetCheckOfSector Proc Near Uses ax cx
	531	mov cx, 256
	532	MBRGCOS_Loop:
	533	lodsw
	534	xor ax, 0BABEh
	535	xor bx, ax
	536	loop MBRGCOS_Loop
	537	or bx, bx
	538	jnz MBRGCOS_NoFixUp
	539	mov bx, 1 ; dont allow 0, cause 0 == empty
	540	MBRGCOS_NoFixUp:
	541	ret
	542	MBR_GetCheckOfSector EndP
	543
[30]	544
	545
	546
	547
	548
	549	;
	550	; This is where the rest of AiR-BOOT gets loaded.
	551	;
	552
[31]	553	;------------------------------------------------------------------------------
[7]	554	MBR_RealStart:
[30]	555	mov ax, StackSeg ; 07000h, below the moved code
[7]	556	mov ss, ax
[31]	557	;mov sp, 7FFFh ; Odd stack-pointer ??
	558	mov sp, 7FFEh ; Even is better
	559	mov ax, es ; ES holds segment where we moved to
[30]	560	mov ds, ax ; Set DS==ES to Code Segment
	561
	562	; If we are in debug-mode, all code is moved already,
	563	; so we can directly jump to it.
[31]	564	; One difference is that in debug-mode, the whole .com image is
	565	; loaded by dos while when air-boot is active from the MBR it
	566	; does the loading itself.
[7]	567	IFNDEF ReleaseCode
	568	jmp AiR_BOOT_Start
	569	ENDIF
[30]	570
	571
[7]	572	; Load missing parts from harddrive...
[31]	573	; mov ax, cs ; actually obsolete
	574	; mov es, ax ; actually obsolete
[30]	575
	576	; Load the configuration-sectors from disk.
[7]	577	mov bx, offset Configuration
[30]	578	mov dx, 0080h ; First harddrive, Sector 55
	579	mov cx, 0037h ; Is 55d is config-sector
	580
[31]	581	; Call the i/o-part
	582	call MBR_LoadConfig
[30]	583
[7]	584	jnc MBR_ConfigCopy_NoError
[30]	585
	586	; Some error occured
[29]	587	MBR_ConfigCopy_LoadError:
[30]	588	call MBR_LoadError ; Will Abort BootUp
	589
	590	; Load the code sectors
[7]	591	MBR_ConfigCopy_NoError:
	592	mov bx, offset FurtherMoreLoad
[30]	593	mov dx, 0080h ; First harddrive
	594	mov cx, 0002h ; Second sector
[7]	595	mov ah, 02h
[30]	596
[31]	597	mov al, ds:[10h] ; Number of code sectors
[7]	598	int 13h
	599	jnc MBR_RealStart_NoError
[29]	600	jmp MBR_ConfigCopy_LoadError
[31]	601
	602
	603
[29]	604	; [v1.05+]
	605	; Signature for IBM's LVM to detect our "powerful" features ;)
[31]	606	; [v1.08+]
	607	; Reworked MBR code to be able to create a double 'I13X' signature.
	608	; MBR's created with LVM eCS v1.x have the signature at 0d5h
	609	; MBR's created with LVM eCS v2.x have the signature at 0d0h
	610	; See eCS bugtracker issue #3002
	611	db 0,'I13X',0,'I13X'
	612
	613
[7]	614	MBR_RealStart_NoError:
	615	; Now Check Code with CheckSum
	616	mov si, offset FurtherMoreLoad
[30]	617
	618	;movzx cx, bptr ds:[10h]
	619	mov cl, ds:[10h]
	620	mov ch,0
	621
[7]	622	xor bx, bx
	623	MBR_RealStart_CheckCodeLoop:
	624	call MBR_GetCheckOfSector
	625	loop MBR_RealStart_CheckCodeLoop
[31]	626
	627
[7]	628	cmp MBR_CheckCode, bx
	629	je MBR_RealStart_CheckSuccess
[31]	630
[7]	631	mov si, offset TXT_ERROR_Attention
	632	call MBR_Teletype
	633	mov si, offset TXT_ERROR_CheckCode
	634	call MBR_Teletype
	635	mov si, offset TXT_ERROR_CheckFailed
	636	call MBR_Teletype
	637	jmp MBR_HaltSystem
	638	MBR_RealStart_CheckSuccess:
	639	jmp AiR_BOOT_Start
	640
[30]	641
	642
	643
	644
[31]	645	;------------------------------------------------------------------------------
	646	Include TEXT\TXTMBR.asm ; All translateable Text in MBR
	647	;------------------------------------------------------------------------------
[30]	648
[31]	649	eot:
[30]	650
[31]	651	; Check for overlap
	652	slack00 = eos1 - eot
	653	IF slack00 LT 0
	654	.ERR2 "Location Overlap slack00 !"
	655	ENDIF
[30]	656
[31]	657
	658	; bios aux
	659
	660	eos1:
	661
	662	; This is an ugly kludge function to create space for the
	663	; double 'I13X' signature.
	664	; It loads the configuration sectors, but bx,cx and dx are not initialized
	665	; in this function. That's done around line 500.
	666	; Putting this few bytes here creates just enough room.
	667	MBR_LoadConfig Proc Near
[32]	668	; Changed from conditional assembler to calculated value
[31]	669	; Fixes issue: #2987 -- "air-boot doesn't remember drive letter"
[32]	670	; Size of the ab-configuration in 512 byte sectors
	671	mov al, (MBR_BackUpMBR - Configuration) / 200h
[31]	672	mov ah,02h
	673	int 13h
	674	ret
	675	MBR_LoadConfig EndP
	676
	677	org 001B8h
[35]	678
	679	; Disk Signature
[31]	680	db 'DSIG'
	681
[35]	682	; Unused word
[31]	683	dw '$$'
	684
[35]	685	; Partition Table
	686	db 16 dup('0')
	687	db 16 dup('1')
	688	db 16 dup('2')
	689	db 16 dup('3')
	690
	691	; Boot Sigbature
	692	dw 0aa55h
	693
[30]	694	org 00200h
	695	; End of sector 1
[31]	696	eos1a:
[30]	697
	698	; Check for overlap
[31]	699	slack01 = sos2 - eos1a
[30]	700	IF slack01 LT 0
	701	.ERR2 "Location Overlap slack01 !"
	702	ENDIF
	703
	704
[31]	705	;==============================================================================
	706	; Sector 2
[30]	707
	708	;
	709	; Here starts the second sector, sector 2
	710	;
	711	org 00200h
	712	; Start of sector 2.
	713	sos2:
	714
[31]	715	;
	716	; Everything beyond this point is loaded on startup
	717	; and is NOT existant at first
	718	;
[7]	719	FurtherMoreLoad:
[30]	720
	721	;
	722	; Filesystem table correlating id with name.
	723	;
	724
[7]	725	; first Normal-Partition-ID, Hidden-Partition-ID
	726	; and Default-Partition-Flags.
	727	; 01h -> Boot-Able
	728	; 10h -> FAT32 - Name Getting Scheme
	729	; 20h -> No Name To Get (use Partition Name)
[29]	730	; 40h -> 'L' flag possible
[7]	731	db 'AiRSYS-TABLE'
[29]	732	FileSysIDs: db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
	733	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
	734	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
[7]	735	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
	736	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
	737	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
	738	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	739	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	740	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	741	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
	742	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
	743	db 16 dup (0)
	744
	745	FileSysNames: db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
[29]	746	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
	747	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
[7]	748	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
	749	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
	750	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
	751	db ' ', ' ', ' ', ' '
	752	db ' ', ' ', ' ', ' '
	753	db ' ', ' ', ' ', ' '
	754	db ' ', 'Kernel ', ' ', '0V-Award'
	755	db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
	756	; -> 44 Partition-Types
	757
[30]	758	; End of sector 2.
	759	eos2:
	760
	761
	762
	763	; Check for overlap
	764	slack02 = sos3 - eos2
	765	IF slack02 LT 0
	766	.ERR2 "Location Overlap slack02 !"
	767	ENDIF
	768
	769
	770
	771
	772
[31]	773	;==============================================================================
	774	; Sector 3
[30]	775	org 00400h
	776	; Start of sector 3.
	777	sos3:
	778
	779
	780
	781
	782
	783
	784
	785
	786
	787
	788
	789
	790
	791
	792
	793	; ##############################################
	794	; ## ENTRY-POINT AFTER ALL THE INITIAL HASSLE ##
	795	; ##############################################
	796
	797
	798
	799	AiR_BOOT_Start: nop
	800
	801	;jmp skip
	802
	803	; Rousseau:
	804	; I should cleanup my garbage here...
	805
[7]	806	; Initialize Variable-Tables, Detections, etc.
	807	call PRECRAP_Main
[30]	808
	809	; Number of harddisks is now known
	810
[7]	811	call PARTSCAN_ScanForPartitions
[30]	812
	813
	814	; Number of disks found
	815	mov si, offset DisksFound
	816	call MBR_Teletype
	817
	818	mov al, [TotalHarddiscs]
	819	call VideoIO_SyncPos
	820	call VideoIO_PrintByteDynamicNumber
	821	xor si,si
	822	call MBR_TeletypeNL
	823
	824	; Number of bootable systems indicator
	825	mov si, offset PartitionsFound
	826	call MBR_Teletype
	827
	828	mov al, [CFG_Partitions]
	829	call VideoIO_SyncPos
	830	call VideoIO_PrintByteDynamicNumber
	831
	832	xor si,si
	833	call MBR_TeletypeNL
	834	call MBR_TeletypeNL
	835
	836	call VideoIO_SyncPos
	837
	838	mov dl,80h
	839	call VideoIO_DumpDiskInfo
	840
	841	;
	842	; Enumberate Bootable Systemen by name
	843	; And prepare Phase 1 if active
	844	;
	845	mov si, offset PartitionTable
	846	xor cx,cx
	847	mov cl,[CFG_Partitions]
	848	MBR_Parts:
	849	add si, 4
	850	push si
	851	push si
	852	;call MBR_TeletypeVolName
	853	pop si
	854	call PART_IsInstallVolume
	855	jnc MBR_Parts_NI
	856
	857	; install volume
	858	mov al,' '
	859	mov bl,7
	860	mov ah, 0eh
	861	int 10h
	862
	863	mov al,'('
	864	mov bl,7
	865	mov ah, 0eh
	866	int 10h
	867
	868	mov al,[CFG_Partitions]
	869	sub al,cl
	870	;inc al
	871	;mov [Menu_EntryAutomatic],al
[31]	872	mov [CFG_PartAutomatic],al ; Setup entry for install-volume
[30]	873	mov [CFG_PartLast],al
	874	mov ah, [eCS_InstallVolume] ; 1st byte is 0 if no phase 1 active
	875	test ah,ah ; test the byte, ZF is 0 if phase 1 active
	876	lahf ; flags in ah
	877	xor ah, 40h ; complement ZF
	878	and ah, 40h ; mask ZF
	879	shr ah, 6 ; move ZF to LSB
	880	mov [CFG_AutomaticBoot], ah ; automatic boot if phase 1 is active
	881	mov [eCS_InstallVolume], 0 ; disable phase 1 for next boot
	882
	883	add al,'1'
	884	mov bl,7
	885	mov ah, 0eh
	886	int 10h
	887
	888	mov al,')'
	889	mov bl,7
	890	mov ah, 0eh
	891	int 10h
	892
	893	mov bx,cx
	894
	895	MBR_Parts_NI:
	896	xor si,si
	897	;call MBR_TeletypeNL
	898	pop si
	899	add si, 30
	900	loop MBR_Parts
	901
	902
	903
	904
	905	; Index of automatic start partition
	906	; mov si, offset AutoStartPart
	907	;call MBR_Teletype
	908
	909	mov al, [CFG_PartAutomatic]
	910	add al, 31h
	911	mov ah, 09h
	912	mov bx, 15
	913	mov cx, 1
	914	;int 10h
	915
	916	mov al, [CFG_PartAutomatic]
	917	add al, 31h
	918	mov ah, 0eh
	919	mov bx, 15
	920	mov cx, 1
	921	;int 10h
	922
	923	xor si,si
	924	call MBR_TeletypeNL
	925	xor si,si
	926	call MBR_TeletypeNL
	927
	928	mov ax,[BIOS_AuxParms]
	929	;call VideoIO_SyncPos
	930	push ax
	931	add al,'0'
	932	mov bl,7
	933	mov ah, 0eh
	934	;int 10h
	935	pop ax
	936	xchg al,ah
	937	sub al,0a2h
	938	mov bl,7
	939	mov ah, 0eh
	940	;int 10h
	941
	942
	943	call MBR_TeletypeSyncPos
	944
	945	xor si,si
	946	call MBR_TeletypeNL
	947	call MBR_TeletypeNL
	948
	949
	950
	951	mov si, offset ShowMenu
	952	call MBR_TeletypeBold
	953
	954
	955	skip:
	956
	957
	958
	959	;
[31]	960	; ####################### WAIT FOR KEY #########################
[30]	961	;
	962
	963
	964	; Rousseau:
	965	; Wait for key so we can see debug log if ab-menu hangs.
	966	;;xor ax, ax
	967	;;int 16h
	968
	969	;call SOUND_Beep
	970
	971	; Rousseau: delayed save of video-page
	972
	973	mov ax, VideoIO_Page1
	974	call VideoIO_BackUpTo ; Copy BIOS POST to Second Page
	975
	976	;call SOUND_Beep
	977
	978
	979	;
	980	; COM-PORT DEBUG
	981	;
[32]	982	; call AuxIO_TeletypeNL
[30]	983	mov si, offset PartitionTable
[32]	984	; call AuxIO_DumpSector
	985	; call AuxIO_TeletypeNL
[30]	986
[31]	987
	988	; Save configuration so phase1 boot-through is disabled
	989	; on next boot.
	990	; Moved here to fix that Esc out of SETUP would also save.
	991	; So moved above the MBR_Main_ReEnterSetup label.
	992	call DriveIO_SaveConfiguration
	993
	994
	995
[30]	996	;
	997	; RE-ENTER SETUP
	998	;
[31]	999	MBR_Main_ReEnterSetup:
[7]	1000	call SETUP_CheckEnterSETUP
	1001
[30]	1002	;call SOUND_Beep
	1003
[31]	1004	; Rousseau: Every time I see "AfterCrap" I have to laugh :-)
	1005	call AFTERCRAP_Main
[30]	1006
[29]	1007	; [Linux support removed since v1.02]
	1008	; ; Now get FAT16-Linux Kernel Partition, If requested
	1009	; cmp [CFG_LinuxKrnlPartition], 0FFh
	1010	; je MBR_Main_NoLinuxKrnlPartition
	1011	; call LINUX_InitFAT16access
	1012	; MBR_Main_NoLinuxKrnlPartition:
[7]	1013
[30]	1014
	1015	MBR_Main_ReEnterBootMenuPre:
	1016
[7]	1017	; SetUp PartitionPointers for BootMenu (filter non-bootable)
	1018	call PART_CalculateMenuPartPointers
	1019
	1020	; ...and count that one...
	1021	cmp PartitionPointerCount, 0
	1022	jne MBR_Main_SomethingBootAble
	1023	mov si, offset TXT_NoBootAble
	1024	call MBR_Teletype
	1025	jmp MBR_HaltSystem
[30]	1026
[7]	1027	MBR_Main_SomethingBootAble:
	1028	; FixUp Values, define Timed Setup booting, etc.
	1029	call PART_FixUpDefaultPartitionValues
	1030
[30]	1031
	1032
[7]	1033	; -------------------------------------------------- BOOT-MENU
	1034	MBR_Main_ReEnterBootMenu:
	1035	call BOOTMENU_ResetMenuVars ; reset has to be done
	1036	test CFG_AutomaticBoot, 1
	1037	jz MBR_Main_NoAutomaticBooting
	1038	; ------------------------------------------ AUTOMATIC BOOTING
	1039	; Select automatic partition, disable automatic booting for
	1040	; next time and boot system...
	1041	mov CFG_AutomaticBoot, 0
	1042	call PASSWORD_AskSystemPwd
	1043	mov al, Menu_EntryAutomatic
[30]	1044
[31]	1045	;mov al, 2
[30]	1046
[31]	1047	mov Menu_EntrySelected, al ; zero based
	1048	jmp MBR_Main_NoBootMenu
[7]	1049
	1050	MBR_Main_NoAutomaticBooting:
[30]	1051
	1052	;call SOUND_Beep
	1053
[7]	1054	test CFG_BootMenuActive, 0FFh
	1055	jnz MBR_Main_GotBootMenu
	1056	; ----------------------------------------------- NO BOOT-MENU
	1057	; Select default partition and boot system...
	1058	call PASSWORD_AskSystemPwd
[30]	1059
[31]	1060	;call VideoIO_DBG_WriteString2
[30]	1061
[7]	1062	mov al, Menu_EntryDefault
[31]	1063	;mov al,0 ; zero based
[7]	1064	mov Menu_EntrySelected, al
	1065	jmp MBR_Main_NoBootMenu
	1066
	1067	MBR_Main_GotBootMenu:
	1068	; ------------------------------------------ BOOT-MENU VISUALS
	1069	call FX_StartScreen
[30]	1070
	1071	;call SOUND_Beep
	1072
[7]	1073	call BOOTMENU_BuildBackground
	1074	call BOOTMENU_BuildMain
	1075	call FX_EndScreenRight
	1076	call PASSWORD_AskSystemPwd
	1077	call BOOTMENU_ResetTimedBoot
[30]	1078
	1079	;call SOUND_Beep
	1080
[7]	1081	call BOOTMENU_Execute
[30]	1082
	1083	;call SOUND_Beep
	1084
[7]	1085	jc MBR_Main_ReEnterSetup
	1086	call BOOTMENU_SetVarsAfterMenu
[30]	1087
	1088	;call SOUND_Beep
	1089
[31]	1090	; ---------------------------------------------------- BOOTING
[7]	1091	MBR_Main_NoBootMenu:
	1092	call FX_StartScreen
	1093	call BOOTMENU_BuildGoodBye
	1094	call FX_EndScreenRight
	1095	call PASSWORD_AskChangeBootPwd
	1096
	1097	IFNDEF ReleaseCode
[29]	1098	; Debug Code to terminate DOS .COM program - used for
	1099	; testing AiR-BOOT
	1100	int 3
[7]	1101	mov ax, 6200h
	1102	int 21h
	1103	mov es, bx
	1104	mov ax, 4C00h ; Quit program
	1105	int 21h
	1106	ENDIF
	1107	call ANTIVIR_SaveBackUpMBR
	1108	mov dl, Menu_EntrySelected
	1109
[31]	1110	; -------------------------------------------- START PARTITION
	1111	call PART_StartPartition
[30]	1112
	1113
[31]	1114
[30]	1115	;
	1116	; Include other code-modules here.
	1117	; Because TASM is a multiple pass assembler, forward references
	1118	; are possible.
	1119	;
	1120	b_std_txt:
[31]	1121	Include REGULAR\STD_TEXT.asm ; Standard (non-translateable text)
[30]	1122	size_std_txt = $-b_std_txt
	1123
	1124	b_driveio:
[31]	1125	Include REGULAR\DRIVEIO.asm ; Drive I/O, Config Load/Save
[30]	1126	size_driveio = $-b_driveio
	1127
	1128	b_videoio:
[31]	1129	Include REGULAR\ViDEOIO.asm ; Video I/O
[30]	1130	size_videoio = $-b_videoio
	1131
	1132	b_timer:
[31]	1133	Include REGULAR\TIMER.asm ; Timer
[30]	1134	size_timer = $-b_timer
	1135
	1136	b_partmain:
[31]	1137	Include REGULAR\PARTMAIN.asm ; Regular Partition Routines
[30]	1138	size_partmain = $-b_partmain
	1139
	1140	b_partscan:
[31]	1141	Include REGULAR\PARTSCAN.asm ; Partition Scanning
[30]	1142	size_partscan = $-b_partscan
	1143
	1144	b_bootmenu:
[31]	1145	Include REGULAR\BOOTMENU.asm ; Boot-Menu
[30]	1146	size_bootmenu = $-b_bootmenu
	1147
	1148	b_password:
[31]	1149	Include REGULAR\PASSWORD.asm ; Password related
[30]	1150	size_password = $-b_password
	1151
	1152	b_other:
[31]	1153	Include REGULAR\OTHER.asm ; Other Routines
[30]	1154	size_other = $-b_other
[7]	1155
[30]	1156	; Rousseau: Special modules moved upwards.
	1157	b_main:
[31]	1158	Include SETUP\MAiN.ASM ; The whole AiR-BOOT SETUP
[30]	1159	size_main = $-b_main
	1160
	1161
	1162	IFDEF TXT_IncludeCyrillic
	1163	b_ccharset:
[31]	1164	Include SPECiAL\CHARSET.asm ; Charset Support (e.g. Cyrillic)
[30]	1165	size_ccharset = $-b_ccharset
	1166	ENDIF
	1167
	1168	b_math:
[31]	1169	Include REGULAR\MATH.ASM ; Math functions (like 32-bit multiply)
[30]	1170	size_math = $-b_math
	1171
	1172	b_conv:
[31]	1173	Include REGULAR\CONV.ASM ; Various conversion routines
[30]	1174	size_conv = $-b_conv
	1175
	1176	IFDEF AuxDebug
	1177	b_debug:
[32]	1178	; Include REGULAR\DEBUG.ASM ; Various debugging routines,
[31]	1179	; uses AUXIO and CONV
[30]	1180	size_debug = $-b_debug
	1181	ENDIF
	1182
	1183	b_auxio:
[32]	1184	;Include REGULAR\AUXIO.ASM ; Com-port support for debugging
[30]	1185	size_auxio = $-b_auxio
	1186
	1187	; Rousseau: moved upwards
	1188	;IFDEF TXT_IncludeCyrillic
	1189	; Include SPECiAL\CHARSET.asm ; Charset Support (e.g. Cyrillic)
	1190	;ENDIF
	1191
[34]	1192	b_lvm:
	1193	Include SPECiAL\LVM.asm ; LVM-specific code
	1194	size_lvm = $-b_lvm
	1195
	1196
[30]	1197	; End of sector 3.
	1198	eos3:
	1199
	1200
	1201	; Check for overlap
	1202	slack03 = sos36 - eos3
	1203	IF slack03 LT 0
	1204	.ERR2 "Location Overlap slack03 !"
	1205	ENDIF
	1206
	1207
[31]	1208	;==============================================================================
[30]	1209
	1210	;
	1211	; This is the AiR-BOOT MBR-Protection Image.
	1212	; 04600 / 200h = 23h = 35d sectors are before this point.
	1213	; The stuff generated here gets overwritten when the MBR_PROT.ASM
	1214	; module, which is assembled separately, gets merged.
	1215	; So you won't find the string below in the generated binary.
	1216	;
	1217	org 04600h ; Sector 36-37
	1218
	1219	; Start of sector 36.
	1220	sos36:
	1221
	1222	MBR_Protection: db 'AiR-BOOT MBR-Protection Image'
	1223	; Hardcoded to 1k (1024 bytes)
	1224	db 1024-($-MBR_Protection) dup('X')
	1225
	1226	; End of sector 37, yes this section is 2 sectors long.
	1227	eos37:
	1228
	1229
	1230
	1231	; Check for overlap
	1232	slack04 = sos38 - eos37
	1233	IF slack04 LT 0
	1234	.ERR2 "Location Overlap slack04 !"
	1235	ENDIF
	1236
	1237
	1238
	1239
[31]	1240	;==============================================================================
	1241	; Sector 38-x
[30]	1242	;
	1243	; This section contains translatable texts.
	1244	;
	1245	org 04A00h
	1246
	1247	; Start of sector 28.
	1248	sos38:
	1249
	1250	b_txtother:
	1251	Include TEXT\TXTOTHER.asm ; All translateable Text-Strings
	1252	size_txtother = $-b_txtother
	1253
	1254	b_txtmenus:
	1255	Include TEXT\TXTMENUS.asm ; All translateable Menu-text
	1256	size_txtmenus = $-b_txtmenus
	1257
	1258	b_charset:
	1259	Include TEXT\CHARSET.asm ; Special Video Charsets (if needed)
	1260	size_charset = $-b_charset
	1261
	1262
	1263	;
	1264	; Here is room for more code.
	1265	; Let's move the special modules here...
	1266	; The come from the previous section.
	1267	;
	1268	b_virus:
[7]	1269	Include SPECiAL\ViRUS.asm ; Virus Detection / Anti-Virus
[30]	1270	size_virus = $-b_virus
[29]	1271	; [Linux support removed since v1.02]
	1272	;Include SPECiAL\FAT16.asm ; FAT-16 Support
	1273	;Include SPECiAL\LINUX.asm ; Linux Kernel Support
[30]	1274	b_billsuxx:
[29]	1275	Include SPECiAL\F00K\BILLSUXX.asm ; Extended Partition - Microsoft-Hack
[30]	1276	size_billsuxx = $-b_billsuxx
	1277
	1278	b_sound:
[7]	1279	Include SPECiAL\SOUND.asm ; Sound
[30]	1280	size_sound = $-b_sound
	1281
	1282	b_apm:
[7]	1283	Include SPECiAL\APM.asm ; Power Managment Support
[30]	1284	size_apm = $-b_apm
	1285
	1286	b_fx:
[7]	1287	Include SPECiAL\FX.asm ; l33t Cooper-Bars/Scrolling <bg>
[30]	1288	size_fx = $-b_fx
	1289
[34]	1290	;b_lvm:
	1291	;Include SPECiAL\LVM.asm ; LVM-specific code
	1292	;size_lvm = $-b_lvm
[30]	1293
	1294
	1295
	1296
	1297
	1298	;
	1299	; Let's make this always the last module in this section.
	1300	;
	1301	Include BLDDATE.asm ; Build Date generated by _build.cmd
	1302
	1303	; End of sector x depending on size of translatable texts.
	1304	eosx:
	1305
	1306	org 06A00h - 4
	1307	;db 'BABE'
	1308
	1309	org 06A00h
	1310	; db 'FACE'
	1311
	1312	; Check for overlap
	1313	slack05 = sos55 - eosx
	1314	IF slack05 LT 0
	1315	.ERR2 "Location Overlap slack05 !"
[7]	1316	ENDIF
	1317
	1318
	1319
[31]	1320	;==============================================================================
	1321	; Sector 55
[30]	1322
	1323	;
	1324	; This section contains the AiR-BOOT configuration.
	1325	; Note that it has a version that should be updated
	1326	; when stuff is added.
	1327	; Also add stuff to the end so that offsets of other
	1328	; variables remain vaild.
	1329	;
	1330	org 06C00h
	1331	sos55:
	1332
	1333
[31]	1334	Configuration: ; THERE IS AN INVISIBLE CHAR HERE !!
	1335	db 'AiRCFG-TABLE'
[30]	1336	db 01h, 07h, 'U' ; "Compressed" ID String
[31]	1337	; This is now version 1.07 to have it in sync with
	1338	; the new code version for eCS.
	1339	; Version 1.02 was for code 1.06, 1.03 was internal
	1340	; and 1.04,1.05 and 1.06 do not exist.
	1341	; It is not required for the config to have the
	1342	; same version as the code, so in the future
	1343	; the code version might be higher than the
	1344	; config version if there are no changes to the latter.
[7]	1345
	1346	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
	1347	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
	1348
	1349	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
	1350
	1351	CFG_Partitions db 0 ; Count of partitions in IPT
	1352	db 0 ; Was BootParts - Removed since v0.28b
	1353	CFG_PartDefault db 0 ; Default-Partition (Base=0)
	1354
	1355	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
[31]	1356	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
[7]	1357	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
	1358	CFG_TimedDelay dw 123 ; Timed Boot - Delay
[30]	1359	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
[7]	1360	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
	1361	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
[30]	1362	CFG_IncludeFloppy db 0 ; Include Floppy Drives in Boot-Menu
[7]	1363	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
	1364	; v0.29+ -> 2 - Detailed Bootmenu
	1365	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
	1366	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
	1367	CFG_PasswordSystem db 0 ; Ask Password when booting System
	1368	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
	1369	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
	1370	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
	1371	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
[31]	1372	CFG_DetectVirus db 0 ; Detect Virus ?
	1373	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
	1374	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
	1375	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
[7]	1376	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
	1377	dw 07A53h
	1378	dw 0E797h
	1379	dw 0A896h
	1380	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
	1381	dw 07A53h
	1382	dw 0E797h
	1383	dw 0A896h
	1384	db 0 ; Rude-Protection - Removed since v0.28b
	1385	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
	1386	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
	1387	; 0 - Do Nothing
	1388	; 1 - Reset Time
	1389	; 2 - Stop Time
	1390	CFG_MakeSound db 0 ; Should be clear ;)
	1391	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
	1392	CFG_ResumeBIOSbootSeq db 0 ; If BIOS Boot Sequence should be resumed
	1393	; 0 - Disabled
	1394	; 1 - CD-ROM
	1395	; 2 - Network
	1396	; 3 - ZIP/LS120
	1397	CFG_CooperBars db 0 ; If Cooper Bars should be shown
	1398	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
	1399	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
	1400	; FFh -> Disabled
	1401	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
	1402	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
	1403	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
	1404	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
	1405	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
[31]	1406	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
[29]	1407	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
[7]	1408
[30]	1409
	1410	;
	1411	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1412	;
	1413
	1414
	1415	eoc:
	1416
	1417	; Check for overlap
	1418	slack05a = soiv - eoc
	1419	IF slack05a LT 0
	1420	.ERR2 "Location Overlap slack05a !"
	1421	ENDIF
	1422
	1423	; Allways have the name of the installation volume
	1424	; at this offset.
	1425	; So future config changes will not break auto-install.
	1426	org 06D00h
	1427
	1428	soiv:
	1429
[31]	1430	; SET(A)BOOT stores the volume name of the eCS system being installed here.
	1431	; It is truncated to 11 chars because AiR-BOOT currently does not support
	1432	; longer labelnames. The name is also capitalized.
	1433	;eCS_InstallVolume db 12 dup (0)
	1434	;eCS_InstallVolume db 'HIGHLOG' ,0
	1435	eCS_InstallVolume db 0,'NOPHASEONE' ,0
	1436	;eCS_InstallVolume db 'ECS-MIDDLE',0,0
	1437	;eCS_InstallVolume db 'ECS-HIGH',0,0,0,0
	1438	;eCS_InstallVolume db 'ECS-HIGH',0,'NO',0
[30]	1439
	1440
	1441
	1442	; End of sector 55.
	1443	eos55:
	1444
	1445
	1446
	1447	; Check for overlap
	1448	slack06 = sosvs - eos55
	1449	IF slack06 LT 0
	1450	.ERR2 "Location Overlap slack06 !"
	1451	ENDIF
	1452
	1453
	1454
[7]	1455	; VIR variables are for the AiR-BOOT Anti Virus Code
	1456	; Most of them are backups of Interrupt Points, so we can check, if a
	1457	; stealth virus is on-line, we can intercept its call.
	1458	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
[30]	1459	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the system
[7]	1460	; from working, so the user has to press reset. That's saver than a Reboot.
	1461	;
	1462	; If a virus is found on the partition to boot, the system will ONLY halt,
	1463	; nothing more, because we can not remove it. The user shall do it :)
	1464	; Those viruses are detected via a real nasty method...Checksum-Checking of the
	1465	; boot-record, which is to be executed. If it does not match the one in our
	1466	; internal partition table, we will stop. You may however switch this detection
	1467	; off or just reset it by switching 'VIBR Detection'.
	1468
[30]	1469
	1470	;
	1471	; 06DABh - 06C00h = 01ABh = 427 bytes.
	1472	;
[7]	1473	org 06DABh ; 427 Boundry
[30]	1474
	1475	sosvs:
	1476
[7]	1477	AutoDrvLetter db 0
	1478	AutoDrvLetterSerial dd 0
	1479
[30]	1480	; This entry is also 34 bytes long
[7]	1481	BIOScontIPTentry:
	1482	db 0, 0, 0, 0, ' '
	1483	db 0, 0FEh, Flags_BootAble
	1484	dw 0 ; No Checksum :)
	1485	db 0, 1, 0
	1486	db 0, 1, 0 ; Location of Partition/Boot Record
	1487	dd 0, 0
	1488
	1489	; 466 Sub-Part
	1490	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
	1491	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
	1492	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
	1493
[30]	1494	; 478 Boundry
	1495	; This entry is also 34 bytes long
[7]	1496	FloppyIPTentry: db 0, 0, 0, 0, 'FloppyDrive'
	1497	db 0, 0FFh, Flags_BootAble
	1498	dw 0 ; No Checksum :)
	1499	db 0, 1, 0
	1500	db 0, 1, 0 ; Location of Partition/Boot Record
	1501	dd 0, 0
[31]	1502	;------------------------------------------------------------------------------
[30]	1503
	1504	eosvs:
	1505
	1506	; Check for overlap
	1507	slack07 = sos56 - eosvs
	1508	IF slack07 LT 0
	1509	.ERR2 "Location Overlap slack07 !"
	1510	ENDIF
	1511
	1512
[31]	1513	;org 06E00h ; Sector 56-57
[30]	1514	org image_size - 0a00h - (image_size - image_size_60secs)
	1515	sos56:
	1516
	1517
	1518
	1519	; Rousseau: This is the start of the AiR-BOOT IPT
	1520
[7]	1521	PartitionTable: ; no-partitions detected... :]
	1522	; db 1, 0, 0, 0, 'Harddisc 1'
	1523	; db 0, 0FFh, Flags_BootAble
	1524	; dw 0 ; No Checksum :)
	1525	; db 0, 0, 1
	1526	; db 0, 0, 1 ; Location of Partition/Boot Record
	1527	; dd 0, 0
	1528
	1529	; Format is:
	1530	;============
	1531	; SerialNumber * 4
	1532	; PartitionName * 11
	1533	; Drive * 1
	1534	; SystemID * 1 (means the partition type)
	1535	; Flags * 1
	1536	; Checksum * 2 (for virus checking)
	1537	; LocationBegin * 3 (where the partition begins)
	1538	; LocationPartTab * 3 (where the partition table is)
	1539	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
	1540	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
[30]	1541	; --------------------> 34 Bytes (total maximum partition-entries = 30)
[7]	1542
[30]	1543	db (partition_count * 34) dup ('P')
	1544
	1545	eos56:
	1546
	1547	; Check for overlap
	1548	slack08 = eoiptsig - eos56
	1549	IF slack08 LT 0
	1550	.ERR2 "Location Overlap slack08 !"
	1551	ENDIF
	1552
	1553
	1554	;org 071F6h
	1555	org image_size - 600h - (image_size - image_size_60secs) / 2 - 0ah
	1556	soiptsig:
[7]	1557	db 'AiRBOOTPAR' ; 1K internal partition table
[30]	1558
	1559
	1560
	1561	eoiptsig:
	1562
	1563	; Check for overlap
	1564	slack09 = soipt - eoiptsig
	1565	IF slack09 LT 0
	1566	.ERR2 "Location Overlap slack09 !"
	1567	ENDIF
	1568
[31]	1569	;------------------------------------------------------------------------------
	1570	;org 07200h ; Sector 58
	1571	org image_size - 600h - (image_size - image_size_60secs) / 2
[30]	1572	soipt:
	1573	sos58:
	1574
	1575	HidePartitionTable: db (partition_count * 30) dup (0FFh)
[7]	1576	; Format is:
	1577	;============
	1578	; PartitionPtr : BYTE * 30
	1579	; --------------------> 30 Bytes * 30
	1580
[30]	1581	DriveLetters: db partition_count dup (0)
[7]	1582	; Format is:
	1583	;============
	1584	; Drive-Letter : BYTE (80h-C:, 81h-D:)
	1585	; --------------------> 1 Byte * 30
[30]	1586	eos58:
	1587	eoipt:
[7]	1588
[30]	1589	; Check foroverlap
	1590	slack10 = sohidsig - eoipt
	1591	IF slack10 LT 0
	1592	.ERR2 "Location Overlap slack10 !"
	1593	ENDIF
	1594
	1595
	1596
	1597	;org 075F6h
	1598	org image_size - 200h -0ah
	1599
	1600	sohidsig:
[7]	1601	db 'AiRBOOTHID' ; 1K internal Hide-partition table
[30]	1602
	1603	eohidsig:
	1604
	1605	; Check for overlap
	1606	slack11 = sohid - eohidsig
	1607	IF slack11 LT 0
	1608	.ERR2 "Location Overlap slack11 !"
	1609	ENDIF
	1610
	1611
	1612
	1613
[31]	1614	;------------------------------------------------------------------------------
	1615	;org 07600h ; Sector 60
	1616	org image_size - 200h ; Sector 60
[30]	1617	sohid:
	1618	sos60:
[31]	1619
[30]	1620	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp - Just to fill this sector with something',0
	1621	AirBootRocks db 'AiR-BOOT Rocks!',0
[7]	1622
[30]	1623	eos60:
	1624	eohid:
	1625
	1626	; Check for overlap
	1627	slack12 = eoab - eohid
	1628	IF slack12 LT 0
	1629	.ERR2 "Location Overlap slack12 !"
	1630	ENDIF
	1631
	1632
	1633	;org 077FEh
	1634	org image_size - 2
	1635	dw 0BABEh
	1636
	1637	eoab:
	1638
	1639	;
	1640	; End of AiR-BOOT code and data.
	1641	;
	1642
	1643
	1644	;
	1645	; Below functions like a BSS segment, thus uninitialized data.
	1646	;
	1647	sobss:
[31]	1648	;------------------------------------------------------------------------------
	1649	org 0A000h ; Uninitialized
[7]	1650	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
	1651	BeginOfVariables:
[29]	1652	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
	1653	LVMSector: db 512 dup (?) ; Temporary Sector for LVM
[7]	1654	TmpSector: db 512 dup (?) ; Temporary Sector
[30]	1655
[7]	1656	; Everything used to build a new IPT and reference it to the old one
[31]	1657	NewPartTable: db 1536 dup (?) ; New Partition Table
[30]	1658	NewHidePartTable: db partition_count * 30 dup (?) ; New Hide-Partition Table
[31]	1659	NewDriveLetters: db partition_count dup (?) ; Logical Drive-Letters
[7]	1660
[30]	1661	PartitionSizeTable: db partition_count * 6 dup (?) ; Size-Table (6 bytes per partition)
[31]	1662	PartitionPointers dw 52 dup (?) ; Maximum is 52 entries till now
	1663	PartitionPointerCount db ? ; Count of total Partition Pointers
[30]	1664	PartitionXref db partition_count dup (?) ; X-Reference Table
	1665	PartitionVolumeLetters db partition_count dup (?) ; Volume-Letters
[31]	1666	; 0 - no LVM support
	1667	; 1 - LVM support, but no letter
	1668	; 'C'-'Z' - assigned drive letter
[7]	1669
[31]	1670	TotalHarddiscs db ? ; Total harddrives (by POST)
	1671	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
	1672	NewPartitions db ? ; Freshly found partitions
	1673	; Independent of SaveConfiguration
[7]	1674
[31]	1675	VideoIO_Segment dw ? ; Segment for Video I/O
[7]	1676
[31]	1677	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
	1678	ExtendedAbsPosSet db ? ; If Absolute Position set
[7]	1679
[31]	1680	CurPartition_Location dw 4 dup (?) ; Where did current partition came from?
	1681	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
	1682	; (filled out by PreCrap)
	1683	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
	1684	; (for detailed error message)
[7]	1685
[29]	1686	; [Linux support removed since v1.02]
	1687	;GotLinux db ? ; 1-Linux found
[7]	1688
	1689	Menu_EntrySelected db ? ; Which partition we boot this time...
	1690	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
	1691	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
	1692	Menu_TotalParts db ? ; Copy of CFG_BootParts
	1693	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
	1694	Menu_EntryDefault db ? ; Default Entry in filtered View
	1695	Menu_EntryLast db ? ; LastBooted Entry in filtered View
	1696	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
	1697	; - All adjusted to menu locations
	1698
	1699	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
	1700	PartSetup_ActivePart db ? ; Active Partition
	1701	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
	1702	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
	1703	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
	1704
	1705	TimedBootEnable db ? ; Local Enable/Disable for timed boot
	1706	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here ;)
	1707	TimedSecondLeft db ? ; How many seconds are left till boom ?
	1708	TimedSecondBack db ? ; To get a modification noticed
	1709	TimedBootUsed db ? ; Timed Boot used for bootup ?
	1710	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
	1711	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
	1712	SETUP_ExitEvent db ? ; Exit Event to end SETUP
	1713	TempPasswordEntry db 17 dup (?)
	1714	SETUP_OldPwd db 17 dup (?)
	1715	SETUP_NewPwd db 17 dup (?)
	1716	SETUP_VerifyPwd db 17 dup (?)
	1717	StartSoundPlayed db ?
[29]	1718	ChangePartNameSave db ?
[7]	1719
	1720	FX_UseCount dw ?
	1721	FX_OverallTimer dw ?
	1722	FX_WideScrollerTimer dw ?
	1723	FX_WideScrollerCurPos dw ?
	1724	FX_WideScrollerSpeed db ?
	1725	FX_WideScrollerSpeedState db ?
	1726	FX_WideScrollerDirection db ?
	1727	FX_WideScrollerAbsDirection db ?
	1728	FX_WideScrollerBounceSpeed db ?
	1729	FX_CooperBarsTimer dw ?
	1730
[29]	1731	; [Linux support removed since v1.02]
	1732	;FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
	1733	;FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
	1734	;FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
	1735	;FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
	1736	;FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
	1737	;FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
	1738	;FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
	1739	;FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
	1740	;FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
	1741	;FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
	1742	;
	1743	;LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
	1744	;LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
	1745	;LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
[30]	1746	;EndOfVariables:
[7]	1747
[29]	1748	; Dynamically Generated Tables - do not need to get initialized with NUL
[7]	1749	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
	1750	FX_CooperState: db 7 dup (?)
	1751	FX_SinusPos: db 7 dup (?)
	1752	FX_CooperPos: dw 7 dup (?)
	1753	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
[29]	1754	LVM_CRCTable: dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
[7]	1755
[30]	1756
	1757
	1758	;
	1759	; Rousseau: added some stuff.
	1760	;
	1761
	1762
	1763	;EVEN
	1764	HugeDisk db MaxDisks dup(?)
	1765	TrueSecs dd MaxDisks dup(?)
	1766
	1767	; BIOS geometry of the boot-drive
	1768	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
	1769	; If Int13X is supported those values are used, otherwise the legacy values.
	1770	BIOS_Cyls dd MaxDisks dup(?)
	1771	BIOS_Heads dd MaxDisks dup(?)
	1772	BIOS_Secs dd MaxDisks dup(?)
	1773	BIOS_Bytes dw MaxDisks dup(?)
	1774	BIOS_TotalSecs dq MaxDisks dup(?)
	1775
	1776	; LBA geometry of the boot-drive
	1777	; Note that these values are taken from the BPB of a partition boot-record
	1778	LVM_Cyls dd MaxDisks dup(?)
	1779	LVM_Heads dd MaxDisks dup(?)
	1780	LVM_Secs dd MaxDisks dup(?)
	1781	LVM_Bytes dw MaxDisks dup(?)
	1782	LVM_TotalSecs dq MaxDisks dup(?)
	1783
	1784	; OS/2 geometry of the boot-drive
	1785	; Note that these values are taken from the BPB of a partition boot-record
	1786	LOG_Cyls dd MaxDisks dup(?)
	1787	LOG_Heads dd MaxDisks dup(?)
	1788	LOG_Secs dd MaxDisks dup(?)
	1789	LOG_Bytes dw MaxDisks dup(?)
	1790	LOG_TotalSecs dq MaxDisks dup(?)
	1791
	1792	; Rousseau: moved here
	1793	EndOfVariables:
	1794
	1795	; Temporary buffer for 48h INT13X bios call
	1796	; Word aligned
	1797	;even
	1798	;align 2
	1799
	1800	;db 1 dup(?)
	1801
[31]	1802	i13xbuf dw 1 dup (?) ; Size of the buffer;
	1803	; this param must be present.
	1804	; Code inserts it.
[30]	1805	db 126 dup(?) ; The buffer itself.
[31]	1806	i13xbuf_size = $-offset i13xbuf-2 ; Size of buffer
	1807	; (excluding the size word at the start).
[30]	1808
	1809	eobss:
	1810
	1811
[7]	1812	code_seg ends
	1813	end air_boot

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