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AIR-BOOT.ASM@ 34

Last change on this file since 34 was 34, checked in by Ben Rietbroek, 13 years ago

Reworked Special Partition Handling [2011-11-24]

Changes

Changed the special partitioning handling code to be more aware
of what kind of partition we're dealing with. This is debug-code.
Most of the added functions are actually redundant and are removed
in later revisions.

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: 66.0 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	;
	23	; v1.08
	24	; -----
	25	; - Fixed driveletter feature which was broken in v1.07.
	26	; - Reworked MBR-code to provide two I13X signatures.
[32]	27	; - Fixes booting older eCS installations on HPFS
	28	; - Fixes booting Windows when installed in logical partition
	29	; with loader on FAT32.
[31]	30	; - Corrected contact links.
[34]	31	; - Location of AUX parameters has changed.
[32]	32	; NOTE:
	33	; AB v1.07 had a bug with saving and loading the correct size of the
	34	; configuration. Therefore the CRC over the config was also calculated
	35	; wrongly.
	36	; While AB v1.0.8 fixes this, it has to use the v1.07 way of CRC calculation.
	37	; Otherwise SET(A)BOOT from the eCS v2.1 would break and reboot after phase1
	38	; would show the boot-menu instead of automatically booting the system
	39	; being installed. (SET(A)BOOT would see a corrupted AB config)
	40	; This means that the CRC over the AB config is calculated over 5 sectors
	41	; instead of 7, just like in v1.07.
	42	; This will be corrected with a future release of eComStation.
	43	; Note that after such a correction, an installation from a v2.1 eCS CD
	44	; with a version of AiR-BOOT >v1.07 active will not automatically
	45	; boot-through after phase1.
[34]	46	; Since there will be more changes in AB in the future, the method of
	47	; passing the install-volume needs to be refined and made more
	48	; independent of a possible AB version installed.
[31]	49	;
	50	; v1.07
	51	; -----
[30]	52	; # Huge Drives and LVM #
	53	; When using disks >512GB under eComStation, the drive geometry changes to
	54	; 127 or 255 sectors per track. Since LVM-info is written at the last sector
	55	; of a track, and AiR-BOOT uses the geometry of the MBR, it cannot find the
	56	; LVM-info and the eCS partition / volume bootsector.
	57	; This has been fixed.
	58	; Now, when an eCS-partition is discovered and the drive is >512GB, AiR-BOOT
	59	; will use the eCS geometry to locate the LVM-info and the bootsector.
	60	;
	61	; # Special loader handling #
	62	; The special handling of partition boot-loaders has been enhanced to
	63	; enable booting of legacy sysems on huge drives with or without OS/2
	64	; extended geometry.
	65	;
	66	; # eComStation boot-through after phase 1 #
	67	; A special functionality is implemented to directly boot the newly
	68	; installed system ; when installing eCS without showing the Boot Menu,
	69	; independant of user settings.
	70	; This works in conjuntion with the OS/2 specific SETABOOT.EXE program,
	71	; also part of this AiR-BOOT package.
	72	;
	73	; # Math, Debug, Conv and Aux modules #
	74	; These are used for 32-bit arithmatic on 16-bit code,
	75	; debug the booting process, converting between data-types
	76	; and outputting log-data to the com-port.
	77
	78
	79
[31]	80	;------------------------------------------------------------------------------
	81	; AiR-BOOT / MAIN-CODE
	82	;------------------------------------------------------------------------------
[30]	83	;
[7]	84
[30]	85
	86	; ----------------------------
	87	; Rousseau: # JUMPS disabled #
	88	; ----------------------------
	89	; We actually don't want to use this directive because it generates extra
	90	; NOP instructions that we can do without.
	91	; Relative conditional jumps that are out-of-range are manually reworked by
	92	; skipping an unconditional jump to the target on base of complementary
	93	; condition logic and temporary labels.
[31]	94	; TASM also has a bug in that when the .ERR2 directive is used when
	95	; the .386 directive is in effect, the JUMPS directive is also active
	96	; and cannot be turned off.
[30]	97	; NOJUMPS seems to have no effect in this situation.
	98	; In this case 4 NOP instructions are generated after forward referencing jump
	99	; instructions, to allow for automatic recoding by TASM.
	100	; This seems to be a TASM bug. (v2,v3,v4, dunno v5)
	101	;
	102	;JUMPS
	103	;
	104
	105	;
	106	; If defined then each module is prefixed with it's name.
	107	; This is used for debugging purposes.
	108	; It should be off in release code.
	109	;
	110	;ModuleNames equ 1
	111
	112
	113
	114	;
	115	; The first harddisk is BIOS coded 80h.
	116	; This makes a total of 128 disk could be supported using this coding.
	117	; This value is used to store disk-information and this info is allocated
	118	; in the BSS.
	119	;
[31]	120	MaxDisks equ 64
[30]	121
	122	;
	123	; If defined then include DEBUG.ASM and output debug-info to serial-port.
	124	;
[32]	125	;AuxDebug equ 1
[30]	126
[31]	127	; Com-port for debugging, 0 is disabled
	128	BiosComPort equ 0
[30]	129
	130
[31]	131	;
	132	; bits 7-5 = datarate
	133	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
	134	; bits 4-3 = parity
	135	; (00 or 10 = none, 01 = odd, 11 = even)
	136	; bit 2 = stop-bits
	137	; (set = 2 stop-bits, clear = 1 stop-bit)
	138	; bits 1-0 = data-bits
	139	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
	140	;
[30]	141
[31]	142	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
	143	AuxInitParms equ 11100011b
	144
	145	; Default word value for BIOS_AuxParms variable
	146	; Note that is has moved since v1.07
	147	BIOS_AuxParmsDefault equ (AuxInitParms SHL 8) OR BiosComPort
	148
[30]	149	;
[7]	150	; If ReleaseCode is not defined, it will produce debug-able code...
[30]	151	;
[31]	152	ReleaseCode equ -1
[7]	153
[31]	154
	155
	156
	157
[30]	158	;
[7]	159	; All Special Equs for this project
[30]	160	;
[7]	161
[31]	162	; Use different addresses depending on whether in pre-boot
	163	; or debug environment.
[7]	164	IFDEF ReleaseCode
[31]	165	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
[30]	166	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
[7]	167	ELSE
[31]	168	StartBaseSeg equ 03A98h ; Adjust to DOS segment
	169	; Rousseau: where does this value
	170	; come from ?
	171	; Should be CS;
	172	; Rectified in actual code by
	173	; ignoring this value.
	174	StartBasePtr equ 00100h ; We are a .com file,DOS is active
[7]	175	ENDIF
	176
[30]	177	; Address labels after code-move
[31]	178	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
[30]	179	BootBasePtr equ 0h ; We put our MBR to this location
[31]	180	BootBaseExec equ BootBasePtr+offset MBR_RealStart
	181	StackSeg equ 07000h ; Put the stack below the code
[30]	182
	183	; Video pages, no INT 10h is used for menu-drawing etc.
[7]	184	VideoIO_Page0 equ 0B800h
	185	VideoIO_Page1 equ 0B900h
	186	VideoIO_Page2 equ 0BA00h
	187	VideoIO_Page4 equ 0BC00h
	188	VideoIO_FXSegment equ 0A000h
	189
[30]	190	; Include
[29]	191	Include ..\INCLUDE\asm.inc
[30]	192	;Include ..\INCLUDE\DOS\airboot.inc ; does not exist anymore
[7]	193
[30]	194	; Special line-drawing characters
[7]	195	TextChar_WinLineRight equ 0C4h ; 'Ä'
	196	TextChar_WinLineDown equ 0B3h ; '³'
	197	TextChar_WinRep1 equ 0D1h ; 'Ñ'
	198	TextChar_WinRep2 equ 0C5h ; 'Å'
	199	TextChar_WinRep3 equ 0CFh ; 'Ï'
	200	TextChar_WinRep4 equ 0B5h ; 'µ'
	201	TextChar_WinRep5 equ 0C6h ; 'Æ'
	202	TextChar_WinRep6 equ 0D8h ; 'Ø'
	203
	204	; Offsets for Partition-Entries in MBR/EPRs
[31]	205	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
	206	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
	207	LocBRPT_BeginCHS equ 1 ; Combined 10-bits cyl with 6 bits
	208	LocBRPT_BeginHead equ 1 ; Start head (0<=H<255) 255 is invalid !
	209	LocBRPT_BeginSector equ 2 ; Start sector (1<=S<=255)
	210	LocBRPT_BeginCylinder equ 3 ; Start cylinder (0<=C<[1024,16384,65536,n])
	211	LocBRPT_SystemID equ 4 ; Type of system using the partition
	212	LocBRPT_EndCHS equ 5 ; Same for end of partition
[7]	213	LocBRPT_EndHead equ 5
	214	LocBRPT_EndSector equ 6
	215	LocBRPT_EndCylinder equ 7
[31]	216	LocBRPT_RelativeBegin equ 8
	217	LocBRPT_AbsoluteLength equ 12
[7]	218
[31]	219	LocBR_Magic equ 510
[7]	220
[29]	221
[34]	222	; Used as a quick compare in LVM.ASM
	223	LocLVM_SignatureByte0 equ 02h
[30]	224
[34]	225	; Offsets for LVM Information Sector.
	226	; These are relative to the start of the LVM sector.
	227	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
	228	LocLVM_CRC equ 08h ; CRC is a DWORD
	229	LocLVM_Heads equ 1ch ; Number of heads
	230	LocLVM_Secs equ 20h ; Sectors per Track
	231	LocLVM_DiskName equ 24h ; Name of the disk
	232	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
	233	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
[30]	234
[34]	235	; An LVM info-sector can contain information on max. 4 partitions.
	236	; All 4 entries will be used when there 4 primary partitions defined.
	237	; For logical partitions, the LVM info-sector is located below the start
	238	; of the logical partition and only one LVM entry is used in that logical
	239	; LVM info-sector.
	240	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
[30]	241
[34]	242	; Offsets for LVM entry.
	243	; These are relative to the start of the entry.
	244	LocLVM_VolumeID equ 00h ; is DWORD
	245	LocLVM_PartitionID equ 04h ; is DWORD
	246	LocLVM_PartitionSize equ 08h ; is DWORD
	247	LocLVM_PartitionStart equ 0ch ; is DWORD
	248	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
	249	LocLVM_Startable equ 11h ; is Startable (newly installed system)
	250	LocLVM_VolumeLetter equ 12h ; is Drive Letter for partition (C-Z or 0)
	251	LocLVM_Unknown equ 13h ; unknown BYTE
	252	; Truncated to 11 chars when displayed in menu.
	253	; MiniLVM sets both to the same value.
	254	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
	255	; Same goes for LocLVM_DiskName.
	256	LocLVM_VolumeName equ 14h ; 20 bytes
	257	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
[30]	258
	259
[34]	260
[7]	261	; Offsets for IPT (Internal Partition Table)
[31]	262	LocIPT_MaxPartitions equ partition_count ; 45 in v1.07
[30]	263	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
	264	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
	265	LocIPT_Serial equ 0 ; Serial from MBR ?
[31]	266	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
	267	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
	268	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
[30]	269	LocIPT_Flags equ 17 ; AiR-BOOT Flags for partition (see below)
	270	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
	271	LocIPT_LocationBegin equ 20 ; Begin of Partition
	272	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
	273	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
	274	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
[7]	275
[30]	276	; AiR-BOOT IPT-Flags
	277	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
	278	LocIPT_DefaultNonBootFlags equ 00000010b ; ...VIBR Detection is always on
[7]	279
	280	Flags_BootAble equ 00000001b
	281	Flags_VIBR_Detection equ 00000010b
	282	Flags_HideFeature equ 00000100b
[30]	283	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
	284	Flags_ExtPartMShack equ 00010000b ; Extended Partition M$-Hack req ?
[7]	285	Flags_NoPartName equ 01000000b
[30]	286	Flags_NowFound equ 10000000b ; temp only in OldPartTable
	287	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
[7]	288
[30]	289	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
	290	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
	291	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
	292	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
[7]	293
[30]	294	; Navigation keys
[7]	295	Keys_Up equ 48h
	296	Keys_Down equ 50h
	297	Keys_Left equ 4Bh
	298	Keys_Right equ 4Dh
	299	Keys_PageUp equ 49h
	300	Keys_PageDown equ 51h
	301	Keys_GrayPlus equ 4Eh
	302	Keys_GrayMinus equ 4Ah
	303	Keys_Plus equ 1Bh
	304	Keys_Minus equ 35h
	305	Keys_Enter equ 1Ch
	306	Keys_ESC equ 1h
	307	Keys_F1 equ 3Bh
	308	Keys_F10 equ 44h
	309	Keys_C equ 2Eh ; Add. Check auf Ctrl!
	310	Keys_Y equ 2Ch
	311	Keys_Z equ 15h
	312	Keys_N equ 31h
	313	Keys_TAB equ 0Fh
	314	Keys_Delete equ 53h
	315	Keys_Backspace equ 0Eh
	316	Keys_Space equ 20h
	317
	318	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
	319
	320
[30]	321	; ------------------------------------------
	322	; Rousseau: # Changed this from .386 to .286
	323	; ------------------------------------------
	324	; Because of the TASM-bug the processor had to be changed to turn JUMPS
	325	; off. Existing movzx instructions were replaced with 286 equivalent code.
	326	; Out of range relative jumps have been recoded.
	327	; AiR-BOOT can now run on a 286 processor :-)
	328	.286
	329
	330	; This influences the uses directive and other stuff,
	331	; like calling-style.
	332	; The model itself,large, has no effect because we generate
	333	; a binairy image and not a segmented executable.
	334	.model large, basic
	335
	336	; Our code-segment starts here.
	337	; We are running in 16-bit and we like it
[7]	338	code_seg segment public use16
	339	assume cs:code_seg, ds:code_seg, es:nothing, ss:nothing
	340
[30]	341
	342
[31]	343	;==============================================================================
	344	; Sector 1
[30]	345
	346
	347	; We are not a .com file at 100h but a binary image
	348	; of which only the 1st sector gets loaded at 07c00h.
	349	org 00000h ; Sector 1
	350
	351	; Start of sector 1
	352	; This is the MBR, note the AiRBOOT signature, it's date (2006), version and
	353	; language.
	354	; Version 1.07 was intruduced in 2011.
	355	; It fixes issues with huge drives and lvm and more.
	356
	357	sos1:
	358
	359	; ---------------------------------------------
	360	; Rousseau: # Combined letter and jump offset #
	361	; ---------------------------------------------
	362	; My guess is Martin had a short jump followed by the AiRBOOT signature at first.
	363	; Then he encountered strange behaviour by some M$ operating-systems if the
	364	; the first insruction was not a CLI.
	365	; But there was no room to insert the CLI and of course he did not want to
	366	; change the location of the AiRBOOT signature.
	367	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
	368	; jump that uses the 'A' of the AiRBOOT signature as the jump displacement.
	369
	370
[31]	371	;------------------------------------------------------------------------------
[30]	372	AiR_BOOT: cli ; Some M$ operating systems need a CLI
[31]	373	; here otherwise they will go beserk
[30]	374	; and will do funny things during
	375	; boot phase, it's laughable!
[31]	376	db 0EBh ; JMP-Short -> MBR_Start
	377	; Uses the 'A' as the displacement !
[34]	378	db 'AiRBOOT', 23h, 11h, 20h, 11h, 01h, 08h, TXT_LanguageID
[30]	379
[7]	380	; ID String, Date and Version Number, U for US version
[30]	381	db 1 ; Total Sectors Count,
[31]	382	; Will get overwritten by FIXBSET.exe
[30]	383	MBR_CheckCode dw 0 ; Check-Sum for Code
[7]	384
[30]	385	;
	386	; No single instruction below should be changed, added or removed in the code
	387	; below as this will cause the jump-link to go haywire.
[31]	388	;
[30]	389	MBR_Start: sti ; This opcode is dedicated to:
	390	cld ; =MICROSOFT JUMP DEPARTMENT=
	391
	392	; Setup some base stuff
	393	; AX got loaded wrongly for debug, changed the instructions
	394	; without modifying the number of bytes.
[31]	395	; Don't comment-out the redundant instruction below because this
	396	; will change the number of bytes and break the jump-chain.
[30]	397	mov ax, StartBaseSeg ; The segment we are moving ourself from (NOT USED)
	398	;mov ds, ax
	399	push cs
	400	pop ds
	401	mov si, StartBasePtr ; The offset we are moving ourself from
	402	mov ax, BootBaseSeg ; The target segment we are moving ourself to
[29]	403	mov es, ax
[30]	404	mov di, BootBasePtr ; The target offset we are moving ourself to
	405
	406	; Depending on pre-boot or debug,
	407	; only move first 512 bytes or the whole she-bang++ (65400 bytes)
[7]	408	IFDEF ReleaseCode
[30]	409	mov cx, 256 ; Pre-boot environment
[7]	410	ELSE
[31]	411	mov cx, 32700 ; Debug environment (move ~64kB)
[7]	412	ENDIF
[30]	413
	414	;
	415	; LET's MOVE OURSELVES !
	416	;
[7]	417	rep movsw
[30]	418
[31]	419	; Code an intersegment jump to the new location
[7]	420	db 0EAh
[30]	421	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
	422	dw BootBaseSeg ; This is 08000h
[7]	423	; jmp far ptr BootBaseSeg:BootBaseExec
	424
[30]	425
	426	;
	427	; Some MBR-functions to provide absolute minimum functionality.
	428	;
	429
	430	;
	431	; Entry-point for halting the system.
	432	;
[7]	433	MBR_HaltSystem:
	434	mov ax, 8600h
	435	xor cx, cx
	436	mov dx, 500
	437	int 15h ; Wait to display the whole screen :]
[29]	438	MBR_HaltSys: cli
	439	jmp MBR_HaltSys
[7]	440
[31]	441
	442
	443	; Comport settings
	444	; It had to be moved to create room for the double I13X
	445	; signature.
	446	; It cannot be in the config-area (sector 55)
	447	; because that area
	448	; is crc-protected.
	449	BIOS_AuxParms dw BIOS_AuxParmsDefault
	450
[30]	451	;
[31]	452	; Reserved space
	453	; Should check overflow here, later...
[30]	454	;
[31]	455	reserved db 6 dup(0)
[30]	456
[31]	457
	458	;
	459	; We jump here after the first instructions of the
	460	; AiR-BOOT signature.
	461	; So we ensure the jump is always at this offset.
	462	org 044h
	463	jmp MBR_Start ; We jump here, because I needed to
	464	; insert a CLI on start and did not
	465	; want to change AiR-BOOT detection
	466	; because of Microsoft inventions...
[30]	467	;
	468	; Entry-point when loading fails.
	469	;
[7]	470	db 'LOAD ERROR!', 0
[30]	471	MBR_LoadError Proc Near
	472	mov si, offset $-12
	473	push cs
	474	pop ds
	475	call MBR_Teletype
	476	MBRLE_Halt:
	477	jmp MBRLE_Halt
	478	MBR_LoadError EndP
[7]	479
[30]	480
	481	;
	482	; Entry-point when saving fails.
	483	;
[7]	484	db 'SAVE ERROR!', 0
[30]	485	MBR_SaveError Proc Near
	486	mov si, offset $-12
	487	push cs
	488	pop ds
	489	call MBR_Teletype
	490	MBRSE_Halt:
	491	jmp MBRSE_Halt
	492	MBR_SaveError EndP
[7]	493
[30]	494
	495	; Put text on the screen using the BIOS tele-type function.
	496	; No attributes like color are supported.
[7]	497	; In: SI - Pointer to begin of string (EOS is 0)
	498	; Destroyed: SI
	499	MBR_Teletype Proc Near Uses ax bx cx
[30]	500	mov ah, 0Eh
	501	mov bx, 7
	502	MBRT_Loop:
	503	lodsb
	504	or al, al
	505	jz MBRT_End
	506	int 10h
	507	jmp MBRT_Loop
	508	MBRT_End:
	509	ret
[7]	510	MBR_Teletype EndP
	511
[30]	512	;
	513	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
	514	;
	515
[7]	516	; In: BX - Base Check, DS:SI - Pointer to 512-byte-area to be included
	517	; Out: BX - Base Check Result
	518	; Destroyed: SI will get updated (+512)
	519	MBR_GetCheckOfSector Proc Near Uses ax cx
	520	mov cx, 256
	521	MBRGCOS_Loop:
	522	lodsw
	523	xor ax, 0BABEh
	524	xor bx, ax
	525	loop MBRGCOS_Loop
	526	or bx, bx
	527	jnz MBRGCOS_NoFixUp
	528	mov bx, 1 ; dont allow 0, cause 0 == empty
	529	MBRGCOS_NoFixUp:
	530	ret
	531	MBR_GetCheckOfSector EndP
	532
[30]	533
	534
	535
	536
	537
	538	;
	539	; This is where the rest of AiR-BOOT gets loaded.
	540	;
	541
[31]	542	;------------------------------------------------------------------------------
[7]	543	MBR_RealStart:
[30]	544	mov ax, StackSeg ; 07000h, below the moved code
[7]	545	mov ss, ax
[31]	546	;mov sp, 7FFFh ; Odd stack-pointer ??
	547	mov sp, 7FFEh ; Even is better
	548	mov ax, es ; ES holds segment where we moved to
[30]	549	mov ds, ax ; Set DS==ES to Code Segment
	550
	551	; If we are in debug-mode, all code is moved already,
	552	; so we can directly jump to it.
[31]	553	; One difference is that in debug-mode, the whole .com image is
	554	; loaded by dos while when air-boot is active from the MBR it
	555	; does the loading itself.
[7]	556	IFNDEF ReleaseCode
	557	jmp AiR_BOOT_Start
	558	ENDIF
[30]	559
	560
[7]	561	; Load missing parts from harddrive...
[31]	562	; mov ax, cs ; actually obsolete
	563	; mov es, ax ; actually obsolete
[30]	564
	565	; Load the configuration-sectors from disk.
[7]	566	mov bx, offset Configuration
[30]	567	mov dx, 0080h ; First harddrive, Sector 55
	568	mov cx, 0037h ; Is 55d is config-sector
	569
[31]	570	; Call the i/o-part
	571	call MBR_LoadConfig
[30]	572
[7]	573	jnc MBR_ConfigCopy_NoError
[30]	574
	575	; Some error occured
[29]	576	MBR_ConfigCopy_LoadError:
[30]	577	call MBR_LoadError ; Will Abort BootUp
	578
	579	; Load the code sectors
[7]	580	MBR_ConfigCopy_NoError:
	581	mov bx, offset FurtherMoreLoad
[30]	582	mov dx, 0080h ; First harddrive
	583	mov cx, 0002h ; Second sector
[7]	584	mov ah, 02h
[30]	585
[31]	586	mov al, ds:[10h] ; Number of code sectors
[7]	587	int 13h
	588	jnc MBR_RealStart_NoError
[29]	589	jmp MBR_ConfigCopy_LoadError
[31]	590
	591
	592
[29]	593	; [v1.05+]
	594	; Signature for IBM's LVM to detect our "powerful" features ;)
[31]	595	; [v1.08+]
	596	; Reworked MBR code to be able to create a double 'I13X' signature.
	597	; MBR's created with LVM eCS v1.x have the signature at 0d5h
	598	; MBR's created with LVM eCS v2.x have the signature at 0d0h
	599	; See eCS bugtracker issue #3002
	600	db 0,'I13X',0,'I13X'
	601
	602
[7]	603	MBR_RealStart_NoError:
	604	; Now Check Code with CheckSum
	605	mov si, offset FurtherMoreLoad
[30]	606
	607	;movzx cx, bptr ds:[10h]
	608	mov cl, ds:[10h]
	609	mov ch,0
	610
[7]	611	xor bx, bx
	612	MBR_RealStart_CheckCodeLoop:
	613	call MBR_GetCheckOfSector
	614	loop MBR_RealStart_CheckCodeLoop
[31]	615
	616
[7]	617	cmp MBR_CheckCode, bx
	618	je MBR_RealStart_CheckSuccess
[31]	619
[7]	620	mov si, offset TXT_ERROR_Attention
	621	call MBR_Teletype
	622	mov si, offset TXT_ERROR_CheckCode
	623	call MBR_Teletype
	624	mov si, offset TXT_ERROR_CheckFailed
	625	call MBR_Teletype
	626	jmp MBR_HaltSystem
	627	MBR_RealStart_CheckSuccess:
	628	jmp AiR_BOOT_Start
	629
[30]	630
	631
	632
	633
[31]	634	;------------------------------------------------------------------------------
	635	Include TEXT\TXTMBR.asm ; All translateable Text in MBR
	636	;------------------------------------------------------------------------------
[30]	637
[31]	638	eot:
[30]	639
[31]	640	; Check for overlap
	641	slack00 = eos1 - eot
	642	IF slack00 LT 0
	643	.ERR2 "Location Overlap slack00 !"
	644	ENDIF
[30]	645
[31]	646
	647	; bios aux
	648
	649	eos1:
	650
	651	; This is an ugly kludge function to create space for the
	652	; double 'I13X' signature.
	653	; It loads the configuration sectors, but bx,cx and dx are not initialized
	654	; in this function. That's done around line 500.
	655	; Putting this few bytes here creates just enough room.
	656	MBR_LoadConfig Proc Near
[32]	657	; Changed from conditional assembler to calculated value
[31]	658	; Fixes issue: #2987 -- "air-boot doesn't remember drive letter"
[32]	659	; Size of the ab-configuration in 512 byte sectors
	660	mov al, (MBR_BackUpMBR - Configuration) / 200h
[31]	661	mov ah,02h
	662	int 13h
	663	ret
	664	MBR_LoadConfig EndP
	665
	666	org 001B8h
	667	db 'DSIG'
	668
	669	dw '$$'
	670
[30]	671	org 00200h
	672	; End of sector 1
[31]	673	eos1a:
[30]	674
	675	; Check for overlap
[31]	676	slack01 = sos2 - eos1a
[30]	677	IF slack01 LT 0
	678	.ERR2 "Location Overlap slack01 !"
	679	ENDIF
	680
	681
[31]	682	;==============================================================================
	683	; Sector 2
[30]	684
	685	;
	686	; Here starts the second sector, sector 2
	687	;
	688	org 00200h
	689	; Start of sector 2.
	690	sos2:
	691
[31]	692	;
	693	; Everything beyond this point is loaded on startup
	694	; and is NOT existant at first
	695	;
[7]	696	FurtherMoreLoad:
[30]	697
	698	;
	699	; Filesystem table correlating id with name.
	700	;
	701
[7]	702	; first Normal-Partition-ID, Hidden-Partition-ID
	703	; and Default-Partition-Flags.
	704	; 01h -> Boot-Able
	705	; 10h -> FAT32 - Name Getting Scheme
	706	; 20h -> No Name To Get (use Partition Name)
[29]	707	; 40h -> 'L' flag possible
[7]	708	db 'AiRSYS-TABLE'
[29]	709	FileSysIDs: db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
	710	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
	711	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
[7]	712	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
	713	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
	714	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
	715	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	716	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	717	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	718	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
	719	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
	720	db 16 dup (0)
	721
	722	FileSysNames: db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
[29]	723	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
	724	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
[7]	725	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
	726	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
	727	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
	728	db ' ', ' ', ' ', ' '
	729	db ' ', ' ', ' ', ' '
	730	db ' ', ' ', ' ', ' '
	731	db ' ', 'Kernel ', ' ', '0V-Award'
	732	db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
	733	; -> 44 Partition-Types
	734
[30]	735	; End of sector 2.
	736	eos2:
	737
	738
	739
	740	; Check for overlap
	741	slack02 = sos3 - eos2
	742	IF slack02 LT 0
	743	.ERR2 "Location Overlap slack02 !"
	744	ENDIF
	745
	746
	747
	748
	749
[31]	750	;==============================================================================
	751	; Sector 3
[30]	752	org 00400h
	753	; Start of sector 3.
	754	sos3:
	755
	756
	757
	758
	759
	760
	761
	762
	763
	764
	765
	766
	767
	768
	769
	770	; ##############################################
	771	; ## ENTRY-POINT AFTER ALL THE INITIAL HASSLE ##
	772	; ##############################################
	773
	774
	775
	776	AiR_BOOT_Start: nop
	777
	778	;jmp skip
	779
	780	; Rousseau:
	781	; I should cleanup my garbage here...
	782
[7]	783	; Initialize Variable-Tables, Detections, etc.
	784	call PRECRAP_Main
[30]	785
	786	; Number of harddisks is now known
	787
[7]	788	call PARTSCAN_ScanForPartitions
[30]	789
	790
	791	; Number of disks found
	792	mov si, offset DisksFound
	793	call MBR_Teletype
	794
	795	mov al, [TotalHarddiscs]
	796	call VideoIO_SyncPos
	797	call VideoIO_PrintByteDynamicNumber
	798	xor si,si
	799	call MBR_TeletypeNL
	800
	801	; Number of bootable systems indicator
	802	mov si, offset PartitionsFound
	803	call MBR_Teletype
	804
	805	mov al, [CFG_Partitions]
	806	call VideoIO_SyncPos
	807	call VideoIO_PrintByteDynamicNumber
	808
	809	xor si,si
	810	call MBR_TeletypeNL
	811	call MBR_TeletypeNL
	812
	813	call VideoIO_SyncPos
	814
	815	mov dl,80h
	816	call VideoIO_DumpDiskInfo
	817
	818	;
	819	; Enumberate Bootable Systemen by name
	820	; And prepare Phase 1 if active
	821	;
	822	mov si, offset PartitionTable
	823	xor cx,cx
	824	mov cl,[CFG_Partitions]
	825	MBR_Parts:
	826	add si, 4
	827	push si
	828	push si
	829	;call MBR_TeletypeVolName
	830	pop si
	831	call PART_IsInstallVolume
	832	jnc MBR_Parts_NI
	833
	834	; install volume
	835	mov al,' '
	836	mov bl,7
	837	mov ah, 0eh
	838	int 10h
	839
	840	mov al,'('
	841	mov bl,7
	842	mov ah, 0eh
	843	int 10h
	844
	845	mov al,[CFG_Partitions]
	846	sub al,cl
	847	;inc al
	848	;mov [Menu_EntryAutomatic],al
[31]	849	mov [CFG_PartAutomatic],al ; Setup entry for install-volume
[30]	850	mov [CFG_PartLast],al
	851	mov ah, [eCS_InstallVolume] ; 1st byte is 0 if no phase 1 active
	852	test ah,ah ; test the byte, ZF is 0 if phase 1 active
	853	lahf ; flags in ah
	854	xor ah, 40h ; complement ZF
	855	and ah, 40h ; mask ZF
	856	shr ah, 6 ; move ZF to LSB
	857	mov [CFG_AutomaticBoot], ah ; automatic boot if phase 1 is active
	858	mov [eCS_InstallVolume], 0 ; disable phase 1 for next boot
	859
	860	add al,'1'
	861	mov bl,7
	862	mov ah, 0eh
	863	int 10h
	864
	865	mov al,')'
	866	mov bl,7
	867	mov ah, 0eh
	868	int 10h
	869
	870	mov bx,cx
	871
	872	MBR_Parts_NI:
	873	xor si,si
	874	;call MBR_TeletypeNL
	875	pop si
	876	add si, 30
	877	loop MBR_Parts
	878
	879
	880
	881
	882	; Index of automatic start partition
	883	; mov si, offset AutoStartPart
	884	;call MBR_Teletype
	885
	886	mov al, [CFG_PartAutomatic]
	887	add al, 31h
	888	mov ah, 09h
	889	mov bx, 15
	890	mov cx, 1
	891	;int 10h
	892
	893	mov al, [CFG_PartAutomatic]
	894	add al, 31h
	895	mov ah, 0eh
	896	mov bx, 15
	897	mov cx, 1
	898	;int 10h
	899
	900	xor si,si
	901	call MBR_TeletypeNL
	902	xor si,si
	903	call MBR_TeletypeNL
	904
	905	mov ax,[BIOS_AuxParms]
	906	;call VideoIO_SyncPos
	907	push ax
	908	add al,'0'
	909	mov bl,7
	910	mov ah, 0eh
	911	;int 10h
	912	pop ax
	913	xchg al,ah
	914	sub al,0a2h
	915	mov bl,7
	916	mov ah, 0eh
	917	;int 10h
	918
	919
	920	call MBR_TeletypeSyncPos
	921
	922	xor si,si
	923	call MBR_TeletypeNL
	924	call MBR_TeletypeNL
	925
	926
	927
	928	mov si, offset ShowMenu
	929	call MBR_TeletypeBold
	930
	931
	932	skip:
	933
	934
	935
	936	;
[31]	937	; ####################### WAIT FOR KEY #########################
[30]	938	;
	939
	940
	941	; Rousseau:
	942	; Wait for key so we can see debug log if ab-menu hangs.
	943	;;xor ax, ax
	944	;;int 16h
	945
	946	;call SOUND_Beep
	947
	948	; Rousseau: delayed save of video-page
	949
	950	mov ax, VideoIO_Page1
	951	call VideoIO_BackUpTo ; Copy BIOS POST to Second Page
	952
	953	;call SOUND_Beep
	954
	955
	956	;
	957	; COM-PORT DEBUG
	958	;
[32]	959	; call AuxIO_TeletypeNL
[30]	960	mov si, offset PartitionTable
[32]	961	; call AuxIO_DumpSector
	962	; call AuxIO_TeletypeNL
[30]	963
[31]	964
	965	; Save configuration so phase1 boot-through is disabled
	966	; on next boot.
	967	; Moved here to fix that Esc out of SETUP would also save.
	968	; So moved above the MBR_Main_ReEnterSetup label.
	969	call DriveIO_SaveConfiguration
	970
	971
	972
[30]	973	;
	974	; RE-ENTER SETUP
	975	;
[31]	976	MBR_Main_ReEnterSetup:
[7]	977	call SETUP_CheckEnterSETUP
	978
[30]	979	;call SOUND_Beep
	980
[31]	981	; Rousseau: Every time I see "AfterCrap" I have to laugh :-)
	982	call AFTERCRAP_Main
[30]	983
[29]	984	; [Linux support removed since v1.02]
	985	; ; Now get FAT16-Linux Kernel Partition, If requested
	986	; cmp [CFG_LinuxKrnlPartition], 0FFh
	987	; je MBR_Main_NoLinuxKrnlPartition
	988	; call LINUX_InitFAT16access
	989	; MBR_Main_NoLinuxKrnlPartition:
[7]	990
[30]	991
	992	MBR_Main_ReEnterBootMenuPre:
	993
[7]	994	; SetUp PartitionPointers for BootMenu (filter non-bootable)
	995	call PART_CalculateMenuPartPointers
	996
	997	; ...and count that one...
	998	cmp PartitionPointerCount, 0
	999	jne MBR_Main_SomethingBootAble
	1000	mov si, offset TXT_NoBootAble
	1001	call MBR_Teletype
	1002	jmp MBR_HaltSystem
[30]	1003
[7]	1004	MBR_Main_SomethingBootAble:
	1005	; FixUp Values, define Timed Setup booting, etc.
	1006	call PART_FixUpDefaultPartitionValues
	1007
[30]	1008
	1009
[7]	1010	; -------------------------------------------------- BOOT-MENU
	1011	MBR_Main_ReEnterBootMenu:
	1012	call BOOTMENU_ResetMenuVars ; reset has to be done
	1013	test CFG_AutomaticBoot, 1
	1014	jz MBR_Main_NoAutomaticBooting
	1015	; ------------------------------------------ AUTOMATIC BOOTING
	1016	; Select automatic partition, disable automatic booting for
	1017	; next time and boot system...
	1018	mov CFG_AutomaticBoot, 0
	1019	call PASSWORD_AskSystemPwd
	1020	mov al, Menu_EntryAutomatic
[30]	1021
[31]	1022	;mov al, 2
[30]	1023
[31]	1024	mov Menu_EntrySelected, al ; zero based
	1025	jmp MBR_Main_NoBootMenu
[7]	1026
	1027	MBR_Main_NoAutomaticBooting:
[30]	1028
	1029	;call SOUND_Beep
	1030
[7]	1031	test CFG_BootMenuActive, 0FFh
	1032	jnz MBR_Main_GotBootMenu
	1033	; ----------------------------------------------- NO BOOT-MENU
	1034	; Select default partition and boot system...
	1035	call PASSWORD_AskSystemPwd
[30]	1036
[31]	1037	;call VideoIO_DBG_WriteString2
[30]	1038
[7]	1039	mov al, Menu_EntryDefault
[31]	1040	;mov al,0 ; zero based
[7]	1041	mov Menu_EntrySelected, al
	1042	jmp MBR_Main_NoBootMenu
	1043
	1044	MBR_Main_GotBootMenu:
	1045	; ------------------------------------------ BOOT-MENU VISUALS
	1046	call FX_StartScreen
[30]	1047
	1048	;call SOUND_Beep
	1049
[7]	1050	call BOOTMENU_BuildBackground
	1051	call BOOTMENU_BuildMain
	1052	call FX_EndScreenRight
	1053	call PASSWORD_AskSystemPwd
	1054	call BOOTMENU_ResetTimedBoot
[30]	1055
	1056	;call SOUND_Beep
	1057
[7]	1058	call BOOTMENU_Execute
[30]	1059
	1060	;call SOUND_Beep
	1061
[7]	1062	jc MBR_Main_ReEnterSetup
	1063	call BOOTMENU_SetVarsAfterMenu
[30]	1064
	1065	;call SOUND_Beep
	1066
[31]	1067	; ---------------------------------------------------- BOOTING
[7]	1068	MBR_Main_NoBootMenu:
	1069	call FX_StartScreen
	1070	call BOOTMENU_BuildGoodBye
	1071	call FX_EndScreenRight
	1072	call PASSWORD_AskChangeBootPwd
	1073
	1074	IFNDEF ReleaseCode
[29]	1075	; Debug Code to terminate DOS .COM program - used for
	1076	; testing AiR-BOOT
	1077	int 3
[7]	1078	mov ax, 6200h
	1079	int 21h
	1080	mov es, bx
	1081	mov ax, 4C00h ; Quit program
	1082	int 21h
	1083	ENDIF
	1084	call ANTIVIR_SaveBackUpMBR
	1085	mov dl, Menu_EntrySelected
	1086
[31]	1087	; -------------------------------------------- START PARTITION
	1088	call PART_StartPartition
[30]	1089
	1090
[31]	1091
[30]	1092	;
	1093	; Include other code-modules here.
	1094	; Because TASM is a multiple pass assembler, forward references
	1095	; are possible.
	1096	;
	1097	b_std_txt:
[31]	1098	Include REGULAR\STD_TEXT.asm ; Standard (non-translateable text)
[30]	1099	size_std_txt = $-b_std_txt
	1100
	1101	b_driveio:
[31]	1102	Include REGULAR\DRIVEIO.asm ; Drive I/O, Config Load/Save
[30]	1103	size_driveio = $-b_driveio
	1104
	1105	b_videoio:
[31]	1106	Include REGULAR\ViDEOIO.asm ; Video I/O
[30]	1107	size_videoio = $-b_videoio
	1108
	1109	b_timer:
[31]	1110	Include REGULAR\TIMER.asm ; Timer
[30]	1111	size_timer = $-b_timer
	1112
	1113	b_partmain:
[31]	1114	Include REGULAR\PARTMAIN.asm ; Regular Partition Routines
[30]	1115	size_partmain = $-b_partmain
	1116
	1117	b_partscan:
[31]	1118	Include REGULAR\PARTSCAN.asm ; Partition Scanning
[30]	1119	size_partscan = $-b_partscan
	1120
	1121	b_bootmenu:
[31]	1122	Include REGULAR\BOOTMENU.asm ; Boot-Menu
[30]	1123	size_bootmenu = $-b_bootmenu
	1124
	1125	b_password:
[31]	1126	Include REGULAR\PASSWORD.asm ; Password related
[30]	1127	size_password = $-b_password
	1128
	1129	b_other:
[31]	1130	Include REGULAR\OTHER.asm ; Other Routines
[30]	1131	size_other = $-b_other
[7]	1132
[30]	1133	; Rousseau: Special modules moved upwards.
	1134	b_main:
[31]	1135	Include SETUP\MAiN.ASM ; The whole AiR-BOOT SETUP
[30]	1136	size_main = $-b_main
	1137
	1138
	1139	IFDEF TXT_IncludeCyrillic
	1140	b_ccharset:
[31]	1141	Include SPECiAL\CHARSET.asm ; Charset Support (e.g. Cyrillic)
[30]	1142	size_ccharset = $-b_ccharset
	1143	ENDIF
	1144
	1145	b_math:
[31]	1146	Include REGULAR\MATH.ASM ; Math functions (like 32-bit multiply)
[30]	1147	size_math = $-b_math
	1148
	1149	b_conv:
[31]	1150	Include REGULAR\CONV.ASM ; Various conversion routines
[30]	1151	size_conv = $-b_conv
	1152
	1153	IFDEF AuxDebug
	1154	b_debug:
[32]	1155	; Include REGULAR\DEBUG.ASM ; Various debugging routines,
[31]	1156	; uses AUXIO and CONV
[30]	1157	size_debug = $-b_debug
	1158	ENDIF
	1159
	1160	b_auxio:
[32]	1161	;Include REGULAR\AUXIO.ASM ; Com-port support for debugging
[30]	1162	size_auxio = $-b_auxio
	1163
	1164	; Rousseau: moved upwards
	1165	;IFDEF TXT_IncludeCyrillic
	1166	; Include SPECiAL\CHARSET.asm ; Charset Support (e.g. Cyrillic)
	1167	;ENDIF
	1168
[34]	1169	b_lvm:
	1170	Include SPECiAL\LVM.asm ; LVM-specific code
	1171	size_lvm = $-b_lvm
	1172
	1173
[30]	1174	; End of sector 3.
	1175	eos3:
	1176
	1177
	1178	; Check for overlap
	1179	slack03 = sos36 - eos3
	1180	IF slack03 LT 0
	1181	.ERR2 "Location Overlap slack03 !"
	1182	ENDIF
	1183
	1184
[31]	1185	;==============================================================================
[30]	1186
	1187	;
	1188	; This is the AiR-BOOT MBR-Protection Image.
	1189	; 04600 / 200h = 23h = 35d sectors are before this point.
	1190	; The stuff generated here gets overwritten when the MBR_PROT.ASM
	1191	; module, which is assembled separately, gets merged.
	1192	; So you won't find the string below in the generated binary.
	1193	;
	1194	org 04600h ; Sector 36-37
	1195
	1196	; Start of sector 36.
	1197	sos36:
	1198
	1199	MBR_Protection: db 'AiR-BOOT MBR-Protection Image'
	1200	; Hardcoded to 1k (1024 bytes)
	1201	db 1024-($-MBR_Protection) dup('X')
	1202
	1203	; End of sector 37, yes this section is 2 sectors long.
	1204	eos37:
	1205
	1206
	1207
	1208	; Check for overlap
	1209	slack04 = sos38 - eos37
	1210	IF slack04 LT 0
	1211	.ERR2 "Location Overlap slack04 !"
	1212	ENDIF
	1213
	1214
	1215
	1216
[31]	1217	;==============================================================================
	1218	; Sector 38-x
[30]	1219	;
	1220	; This section contains translatable texts.
	1221	;
	1222	org 04A00h
	1223
	1224	; Start of sector 28.
	1225	sos38:
	1226
	1227	b_txtother:
	1228	Include TEXT\TXTOTHER.asm ; All translateable Text-Strings
	1229	size_txtother = $-b_txtother
	1230
	1231	b_txtmenus:
	1232	Include TEXT\TXTMENUS.asm ; All translateable Menu-text
	1233	size_txtmenus = $-b_txtmenus
	1234
	1235	b_charset:
	1236	Include TEXT\CHARSET.asm ; Special Video Charsets (if needed)
	1237	size_charset = $-b_charset
	1238
	1239
	1240	;
	1241	; Here is room for more code.
	1242	; Let's move the special modules here...
	1243	; The come from the previous section.
	1244	;
	1245	b_virus:
[7]	1246	Include SPECiAL\ViRUS.asm ; Virus Detection / Anti-Virus
[30]	1247	size_virus = $-b_virus
[29]	1248	; [Linux support removed since v1.02]
	1249	;Include SPECiAL\FAT16.asm ; FAT-16 Support
	1250	;Include SPECiAL\LINUX.asm ; Linux Kernel Support
[30]	1251	b_billsuxx:
[29]	1252	Include SPECiAL\F00K\BILLSUXX.asm ; Extended Partition - Microsoft-Hack
[30]	1253	size_billsuxx = $-b_billsuxx
	1254
	1255	b_sound:
[7]	1256	Include SPECiAL\SOUND.asm ; Sound
[30]	1257	size_sound = $-b_sound
	1258
	1259	b_apm:
[7]	1260	Include SPECiAL\APM.asm ; Power Managment Support
[30]	1261	size_apm = $-b_apm
	1262
	1263	b_fx:
[7]	1264	Include SPECiAL\FX.asm ; l33t Cooper-Bars/Scrolling <bg>
[30]	1265	size_fx = $-b_fx
	1266
[34]	1267	;b_lvm:
	1268	;Include SPECiAL\LVM.asm ; LVM-specific code
	1269	;size_lvm = $-b_lvm
[30]	1270
	1271
	1272
	1273
	1274
	1275	;
	1276	; Let's make this always the last module in this section.
	1277	;
	1278	Include BLDDATE.asm ; Build Date generated by _build.cmd
	1279
	1280	; End of sector x depending on size of translatable texts.
	1281	eosx:
	1282
	1283	org 06A00h - 4
	1284	;db 'BABE'
	1285
	1286	org 06A00h
	1287	; db 'FACE'
	1288
	1289	; Check for overlap
	1290	slack05 = sos55 - eosx
	1291	IF slack05 LT 0
	1292	.ERR2 "Location Overlap slack05 !"
[7]	1293	ENDIF
	1294
	1295
	1296
[31]	1297	;==============================================================================
	1298	; Sector 55
[30]	1299
	1300	;
	1301	; This section contains the AiR-BOOT configuration.
	1302	; Note that it has a version that should be updated
	1303	; when stuff is added.
	1304	; Also add stuff to the end so that offsets of other
	1305	; variables remain vaild.
	1306	;
	1307	org 06C00h
	1308	sos55:
	1309
	1310
[31]	1311	Configuration: ; THERE IS AN INVISIBLE CHAR HERE !!
	1312	db 'AiRCFG-TABLE'
[30]	1313	db 01h, 07h, 'U' ; "Compressed" ID String
[31]	1314	; This is now version 1.07 to have it in sync with
	1315	; the new code version for eCS.
	1316	; Version 1.02 was for code 1.06, 1.03 was internal
	1317	; and 1.04,1.05 and 1.06 do not exist.
	1318	; It is not required for the config to have the
	1319	; same version as the code, so in the future
	1320	; the code version might be higher than the
	1321	; config version if there are no changes to the latter.
[7]	1322
	1323	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
	1324	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
	1325
	1326	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
	1327
	1328	CFG_Partitions db 0 ; Count of partitions in IPT
	1329	db 0 ; Was BootParts - Removed since v0.28b
	1330	CFG_PartDefault db 0 ; Default-Partition (Base=0)
	1331
	1332	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
[31]	1333	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
[7]	1334	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
	1335	CFG_TimedDelay dw 123 ; Timed Boot - Delay
[30]	1336	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
[7]	1337	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
	1338	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
[30]	1339	CFG_IncludeFloppy db 0 ; Include Floppy Drives in Boot-Menu
[7]	1340	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
	1341	; v0.29+ -> 2 - Detailed Bootmenu
	1342	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
	1343	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
	1344	CFG_PasswordSystem db 0 ; Ask Password when booting System
	1345	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
	1346	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
	1347	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
	1348	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
[31]	1349	CFG_DetectVirus db 0 ; Detect Virus ?
	1350	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
	1351	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
	1352	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
[7]	1353	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
	1354	dw 07A53h
	1355	dw 0E797h
	1356	dw 0A896h
	1357	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
	1358	dw 07A53h
	1359	dw 0E797h
	1360	dw 0A896h
	1361	db 0 ; Rude-Protection - Removed since v0.28b
	1362	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
	1363	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
	1364	; 0 - Do Nothing
	1365	; 1 - Reset Time
	1366	; 2 - Stop Time
	1367	CFG_MakeSound db 0 ; Should be clear ;)
	1368	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
	1369	CFG_ResumeBIOSbootSeq db 0 ; If BIOS Boot Sequence should be resumed
	1370	; 0 - Disabled
	1371	; 1 - CD-ROM
	1372	; 2 - Network
	1373	; 3 - ZIP/LS120
	1374	CFG_CooperBars db 0 ; If Cooper Bars should be shown
	1375	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
	1376	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
	1377	; FFh -> Disabled
	1378	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
	1379	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
	1380	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
	1381	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
	1382	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
[31]	1383	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
[29]	1384	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
[7]	1385
[30]	1386
	1387	;
	1388	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1389	;
	1390
	1391
	1392	eoc:
	1393
	1394	; Check for overlap
	1395	slack05a = soiv - eoc
	1396	IF slack05a LT 0
	1397	.ERR2 "Location Overlap slack05a !"
	1398	ENDIF
	1399
	1400	; Allways have the name of the installation volume
	1401	; at this offset.
	1402	; So future config changes will not break auto-install.
	1403	org 06D00h
	1404
	1405	soiv:
	1406
[31]	1407	; SET(A)BOOT stores the volume name of the eCS system being installed here.
	1408	; It is truncated to 11 chars because AiR-BOOT currently does not support
	1409	; longer labelnames. The name is also capitalized.
	1410	;eCS_InstallVolume db 12 dup (0)
	1411	;eCS_InstallVolume db 'HIGHLOG' ,0
	1412	eCS_InstallVolume db 0,'NOPHASEONE' ,0
	1413	;eCS_InstallVolume db 'ECS-MIDDLE',0,0
	1414	;eCS_InstallVolume db 'ECS-HIGH',0,0,0,0
	1415	;eCS_InstallVolume db 'ECS-HIGH',0,'NO',0
[30]	1416
	1417
	1418
	1419	; End of sector 55.
	1420	eos55:
	1421
	1422
	1423
	1424	; Check for overlap
	1425	slack06 = sosvs - eos55
	1426	IF slack06 LT 0
	1427	.ERR2 "Location Overlap slack06 !"
	1428	ENDIF
	1429
	1430
	1431
[7]	1432	; VIR variables are for the AiR-BOOT Anti Virus Code
	1433	; Most of them are backups of Interrupt Points, so we can check, if a
	1434	; stealth virus is on-line, we can intercept its call.
	1435	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
[30]	1436	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the system
[7]	1437	; from working, so the user has to press reset. That's saver than a Reboot.
	1438	;
	1439	; If a virus is found on the partition to boot, the system will ONLY halt,
	1440	; nothing more, because we can not remove it. The user shall do it :)
	1441	; Those viruses are detected via a real nasty method...Checksum-Checking of the
	1442	; boot-record, which is to be executed. If it does not match the one in our
	1443	; internal partition table, we will stop. You may however switch this detection
	1444	; off or just reset it by switching 'VIBR Detection'.
	1445
[30]	1446
	1447	;
	1448	; 06DABh - 06C00h = 01ABh = 427 bytes.
	1449	;
[7]	1450	org 06DABh ; 427 Boundry
[30]	1451
	1452	sosvs:
	1453
[7]	1454	AutoDrvLetter db 0
	1455	AutoDrvLetterSerial dd 0
	1456
[30]	1457	; This entry is also 34 bytes long
[7]	1458	BIOScontIPTentry:
	1459	db 0, 0, 0, 0, ' '
	1460	db 0, 0FEh, Flags_BootAble
	1461	dw 0 ; No Checksum :)
	1462	db 0, 1, 0
	1463	db 0, 1, 0 ; Location of Partition/Boot Record
	1464	dd 0, 0
	1465
	1466	; 466 Sub-Part
	1467	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
	1468	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
	1469	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
	1470
[30]	1471	; 478 Boundry
	1472	; This entry is also 34 bytes long
[7]	1473	FloppyIPTentry: db 0, 0, 0, 0, 'FloppyDrive'
	1474	db 0, 0FFh, Flags_BootAble
	1475	dw 0 ; No Checksum :)
	1476	db 0, 1, 0
	1477	db 0, 1, 0 ; Location of Partition/Boot Record
	1478	dd 0, 0
[31]	1479	;------------------------------------------------------------------------------
[30]	1480
	1481	eosvs:
	1482
	1483	; Check for overlap
	1484	slack07 = sos56 - eosvs
	1485	IF slack07 LT 0
	1486	.ERR2 "Location Overlap slack07 !"
	1487	ENDIF
	1488
	1489
[31]	1490	;org 06E00h ; Sector 56-57
[30]	1491	org image_size - 0a00h - (image_size - image_size_60secs)
	1492	sos56:
	1493
	1494
	1495
	1496	; Rousseau: This is the start of the AiR-BOOT IPT
	1497
[7]	1498	PartitionTable: ; no-partitions detected... :]
	1499	; db 1, 0, 0, 0, 'Harddisc 1'
	1500	; db 0, 0FFh, Flags_BootAble
	1501	; dw 0 ; No Checksum :)
	1502	; db 0, 0, 1
	1503	; db 0, 0, 1 ; Location of Partition/Boot Record
	1504	; dd 0, 0
	1505
	1506	; Format is:
	1507	;============
	1508	; SerialNumber * 4
	1509	; PartitionName * 11
	1510	; Drive * 1
	1511	; SystemID * 1 (means the partition type)
	1512	; Flags * 1
	1513	; Checksum * 2 (for virus checking)
	1514	; LocationBegin * 3 (where the partition begins)
	1515	; LocationPartTab * 3 (where the partition table is)
	1516	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
	1517	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
[30]	1518	; --------------------> 34 Bytes (total maximum partition-entries = 30)
[7]	1519
[30]	1520	db (partition_count * 34) dup ('P')
	1521
	1522	eos56:
	1523
	1524	; Check for overlap
	1525	slack08 = eoiptsig - eos56
	1526	IF slack08 LT 0
	1527	.ERR2 "Location Overlap slack08 !"
	1528	ENDIF
	1529
	1530
	1531	;org 071F6h
	1532	org image_size - 600h - (image_size - image_size_60secs) / 2 - 0ah
	1533	soiptsig:
[7]	1534	db 'AiRBOOTPAR' ; 1K internal partition table
[30]	1535
	1536
	1537
	1538	eoiptsig:
	1539
	1540	; Check for overlap
	1541	slack09 = soipt - eoiptsig
	1542	IF slack09 LT 0
	1543	.ERR2 "Location Overlap slack09 !"
	1544	ENDIF
	1545
[31]	1546	;------------------------------------------------------------------------------
	1547	;org 07200h ; Sector 58
	1548	org image_size - 600h - (image_size - image_size_60secs) / 2
[30]	1549	soipt:
	1550	sos58:
	1551
	1552	HidePartitionTable: db (partition_count * 30) dup (0FFh)
[7]	1553	; Format is:
	1554	;============
	1555	; PartitionPtr : BYTE * 30
	1556	; --------------------> 30 Bytes * 30
	1557
[30]	1558	DriveLetters: db partition_count dup (0)
[7]	1559	; Format is:
	1560	;============
	1561	; Drive-Letter : BYTE (80h-C:, 81h-D:)
	1562	; --------------------> 1 Byte * 30
[30]	1563	eos58:
	1564	eoipt:
[7]	1565
[30]	1566	; Check foroverlap
	1567	slack10 = sohidsig - eoipt
	1568	IF slack10 LT 0
	1569	.ERR2 "Location Overlap slack10 !"
	1570	ENDIF
	1571
	1572
	1573
	1574	;org 075F6h
	1575	org image_size - 200h -0ah
	1576
	1577	sohidsig:
[7]	1578	db 'AiRBOOTHID' ; 1K internal Hide-partition table
[30]	1579
	1580	eohidsig:
	1581
	1582	; Check for overlap
	1583	slack11 = sohid - eohidsig
	1584	IF slack11 LT 0
	1585	.ERR2 "Location Overlap slack11 !"
	1586	ENDIF
	1587
	1588
	1589
	1590
[31]	1591	;------------------------------------------------------------------------------
	1592	;org 07600h ; Sector 60
	1593	org image_size - 200h ; Sector 60
[30]	1594	sohid:
	1595	sos60:
[31]	1596
[30]	1597	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp - Just to fill this sector with something',0
	1598	AirBootRocks db 'AiR-BOOT Rocks!',0
[7]	1599
[30]	1600	eos60:
	1601	eohid:
	1602
	1603	; Check for overlap
	1604	slack12 = eoab - eohid
	1605	IF slack12 LT 0
	1606	.ERR2 "Location Overlap slack12 !"
	1607	ENDIF
	1608
	1609
	1610	;org 077FEh
	1611	org image_size - 2
	1612	dw 0BABEh
	1613
	1614	eoab:
	1615
	1616	;
	1617	; End of AiR-BOOT code and data.
	1618	;
	1619
	1620
	1621	;
	1622	; Below functions like a BSS segment, thus uninitialized data.
	1623	;
	1624	sobss:
[31]	1625	;------------------------------------------------------------------------------
	1626	org 0A000h ; Uninitialized
[7]	1627	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
	1628	BeginOfVariables:
[29]	1629	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
	1630	LVMSector: db 512 dup (?) ; Temporary Sector for LVM
[7]	1631	TmpSector: db 512 dup (?) ; Temporary Sector
[30]	1632
[7]	1633	; Everything used to build a new IPT and reference it to the old one
[31]	1634	NewPartTable: db 1536 dup (?) ; New Partition Table
[30]	1635	NewHidePartTable: db partition_count * 30 dup (?) ; New Hide-Partition Table
[31]	1636	NewDriveLetters: db partition_count dup (?) ; Logical Drive-Letters
[7]	1637
[30]	1638	PartitionSizeTable: db partition_count * 6 dup (?) ; Size-Table (6 bytes per partition)
[31]	1639	PartitionPointers dw 52 dup (?) ; Maximum is 52 entries till now
	1640	PartitionPointerCount db ? ; Count of total Partition Pointers
[30]	1641	PartitionXref db partition_count dup (?) ; X-Reference Table
	1642	PartitionVolumeLetters db partition_count dup (?) ; Volume-Letters
[31]	1643	; 0 - no LVM support
	1644	; 1 - LVM support, but no letter
	1645	; 'C'-'Z' - assigned drive letter
[7]	1646
[31]	1647	TotalHarddiscs db ? ; Total harddrives (by POST)
	1648	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
	1649	NewPartitions db ? ; Freshly found partitions
	1650	; Independent of SaveConfiguration
[7]	1651
[31]	1652	VideoIO_Segment dw ? ; Segment for Video I/O
[7]	1653
[31]	1654	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
	1655	ExtendedAbsPosSet db ? ; If Absolute Position set
[7]	1656
[31]	1657	CurPartition_Location dw 4 dup (?) ; Where did current partition came from?
	1658	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
	1659	; (filled out by PreCrap)
	1660	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
	1661	; (for detailed error message)
[7]	1662
[29]	1663	; [Linux support removed since v1.02]
	1664	;GotLinux db ? ; 1-Linux found
[7]	1665
	1666	Menu_EntrySelected db ? ; Which partition we boot this time...
	1667	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
	1668	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
	1669	Menu_TotalParts db ? ; Copy of CFG_BootParts
	1670	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
	1671	Menu_EntryDefault db ? ; Default Entry in filtered View
	1672	Menu_EntryLast db ? ; LastBooted Entry in filtered View
	1673	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
	1674	; - All adjusted to menu locations
	1675
	1676	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
	1677	PartSetup_ActivePart db ? ; Active Partition
	1678	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
	1679	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
	1680	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
	1681
	1682	TimedBootEnable db ? ; Local Enable/Disable for timed boot
	1683	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here ;)
	1684	TimedSecondLeft db ? ; How many seconds are left till boom ?
	1685	TimedSecondBack db ? ; To get a modification noticed
	1686	TimedBootUsed db ? ; Timed Boot used for bootup ?
	1687	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
	1688	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
	1689	SETUP_ExitEvent db ? ; Exit Event to end SETUP
	1690	TempPasswordEntry db 17 dup (?)
	1691	SETUP_OldPwd db 17 dup (?)
	1692	SETUP_NewPwd db 17 dup (?)
	1693	SETUP_VerifyPwd db 17 dup (?)
	1694	StartSoundPlayed db ?
[29]	1695	ChangePartNameSave db ?
[7]	1696
	1697	FX_UseCount dw ?
	1698	FX_OverallTimer dw ?
	1699	FX_WideScrollerTimer dw ?
	1700	FX_WideScrollerCurPos dw ?
	1701	FX_WideScrollerSpeed db ?
	1702	FX_WideScrollerSpeedState db ?
	1703	FX_WideScrollerDirection db ?
	1704	FX_WideScrollerAbsDirection db ?
	1705	FX_WideScrollerBounceSpeed db ?
	1706	FX_CooperBarsTimer dw ?
	1707
[29]	1708	; [Linux support removed since v1.02]
	1709	;FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
	1710	;FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
	1711	;FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
	1712	;FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
	1713	;FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
	1714	;FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
	1715	;FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
	1716	;FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
	1717	;FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
	1718	;FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
	1719	;
	1720	;LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
	1721	;LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
	1722	;LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
[30]	1723	;EndOfVariables:
[7]	1724
[29]	1725	; Dynamically Generated Tables - do not need to get initialized with NUL
[7]	1726	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
	1727	FX_CooperState: db 7 dup (?)
	1728	FX_SinusPos: db 7 dup (?)
	1729	FX_CooperPos: dw 7 dup (?)
	1730	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
[29]	1731	LVM_CRCTable: dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
[7]	1732
[30]	1733
	1734
	1735	;
	1736	; Rousseau: added some stuff.
	1737	;
	1738
	1739
	1740	;EVEN
	1741	HugeDisk db MaxDisks dup(?)
	1742	TrueSecs dd MaxDisks dup(?)
	1743
	1744	; BIOS geometry of the boot-drive
	1745	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
	1746	; If Int13X is supported those values are used, otherwise the legacy values.
	1747	BIOS_Cyls dd MaxDisks dup(?)
	1748	BIOS_Heads dd MaxDisks dup(?)
	1749	BIOS_Secs dd MaxDisks dup(?)
	1750	BIOS_Bytes dw MaxDisks dup(?)
	1751	BIOS_TotalSecs dq MaxDisks dup(?)
	1752
	1753	; LBA geometry of the boot-drive
	1754	; Note that these values are taken from the BPB of a partition boot-record
	1755	LVM_Cyls dd MaxDisks dup(?)
	1756	LVM_Heads dd MaxDisks dup(?)
	1757	LVM_Secs dd MaxDisks dup(?)
	1758	LVM_Bytes dw MaxDisks dup(?)
	1759	LVM_TotalSecs dq MaxDisks dup(?)
	1760
	1761	; OS/2 geometry of the boot-drive
	1762	; Note that these values are taken from the BPB of a partition boot-record
	1763	LOG_Cyls dd MaxDisks dup(?)
	1764	LOG_Heads dd MaxDisks dup(?)
	1765	LOG_Secs dd MaxDisks dup(?)
	1766	LOG_Bytes dw MaxDisks dup(?)
	1767	LOG_TotalSecs dq MaxDisks dup(?)
	1768
	1769	; Rousseau: moved here
	1770	EndOfVariables:
	1771
	1772	; Temporary buffer for 48h INT13X bios call
	1773	; Word aligned
	1774	;even
	1775	;align 2
	1776
	1777	;db 1 dup(?)
	1778
[31]	1779	i13xbuf dw 1 dup (?) ; Size of the buffer;
	1780	; this param must be present.
	1781	; Code inserts it.
[30]	1782	db 126 dup(?) ; The buffer itself.
[31]	1783	i13xbuf_size = $-offset i13xbuf-2 ; Size of buffer
	1784	; (excluding the size word at the start).
[30]	1785
	1786	eobss:
	1787
	1788
[7]	1789	code_seg ends
	1790	end air_boot

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