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AIR-BOOT.ASM@ 42

Last change on this file since 42 was 42, checked in by Ben Rietbroek, 12 years ago

JWasm version working [2012-02-16]

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 THESE COMMITS!!

Info

o DOS linkage calculates correct offsets
o RAW linkage calculates relative offsets (no fixups)

Problem

o Something goes wrong between the end of the image and the BSS.

Moving the BSS just after the image gives corruption.
(all floppy entries, FFH)
So, the start of the BSS gets overwrittenby something...

File size: 77.9 KB

Rev	Line
[40]	1	;
	2	; BSS moet op A000 liggen
	3	; Segmented werkt niet
	4	; Moet met Tasm/DOS assembleren
	5	; Wat we dus niet willen !!
	6	;
	7
	8
	9
[29]	10	; AiR-BOOT (c) Copyright 1998-2008 M. Kiewitz
	11	;
	12	; This file is part of AiR-BOOT
	13	;
	14	; AiR-BOOT is free software: you can redistribute it and/or modify it under
	15	; the terms of the GNU General Public License as published by the Free
	16	; Software Foundation, either version 3 of the License, or (at your option)
	17	; any later version.
	18	;
	19	; AiR-BOOT is distributed in the hope that it will be useful, but WITHOUT ANY
	20	; WARRANTY: without even the implied warranty of MERCHANTABILITY or FITNESS
	21	; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
	22	; details.
	23	;
	24	; You should have received a copy of the GNU General Public License along with
	25	; AiR-BOOT. If not, see <http://www.gnu.org/licenses/>.
	26	;
[7]	27
[36]	28
[37]	29	;IFDEF JWASM
	30	; db 'JWASM'
	31	;ENDIF
	32	;IFDEF TASM
	33	; db 'TASM'
	34	;ENDIF
[36]	35
[37]	36
	37
	38	;IF DEBUG_LEVEL EQ 0
	39	; db 'L0'
	40	;ELSE
	41	; db 'Lx'
	42	;ENDIF
	43
	44
[36]	45	; ---------------------------------
	46	; Rousseau: Fixes and Enhancements
	47	; ---------------------------------
[31]	48	;
[37]	49	; v1.0.8-rc2-bld20120213
	50	;-----------------------
	51	; # Removed requirement for LVM P and V name to be the same to edit #
	52	; However, when both are the same before the edit, the V name will be
	53	; synved to the P name to have them both the same again after the edit.
	54	; If they differ, only the V name is updated.
	55	;
	56	; # Trying to edit the label of a type 0x35 partition now shows a popup #
	57	; The user is informed that type 0x35 labels cannot be edited.
	58	;
	59	; # Type 0x35 partitions cannot be added to the AB-menu anymore #
	60	; They are not bootable anyway. The user is informed by a popup.
	61	;
	62	; # De-tasemized the Assembler sources for JWasm compatibility #
	63	; AiR-BOOT can now be built using JWasm, which is now the preferred
	64	; assembler.
	65	;
	66	; # Completely reworked the build-system #
	67	; Everything is now done with Makefiles using WMake, Wlink and the
	68	; C/C++ Compilers from the Open Watcom development tools together with JWasm.
	69	; This obsoletes tasm, tlink and exe2bin.
	70	;
	71	; # Cross-Platform support #
	72	; AiR-BOOT and it's helpers can now be built on: DOS, Win32, OS/2 and Linux.
	73	;
	74	; # Rewrote FIXCODE.ASM in C so the tool-chain is not dependent on a DOS .COM
	75	; program for embedding the MBR-protection. DOS,Win32,OS/2 and Linux
	76	; versions of FIXCODE are now used. (EXE[MZ\|PE\|LX] and ELF)
	77	;
	78	; v1.0.8-rc1-bld20120124
	79	; ----------------------
[36]	80	; # Changed version format to be more WarpIN compatible #
	81	; This is a cosmetic change only, the internal format has not changed.
[35]	82	;
[36]	83	; # Show LVM VolumeName instead of LVM PartitionName #
	84	; Previous versions of AiR-BOOT used the LVM PartitionName as the Label
	85	; if LVM-info was present for the partition.
	86	; This is inconsistent with MiniLVM which shows the LVM VolumeName.
	87	; Starting with v1.0.8 the LVM VolumeName is displayed.
	88	;
	89	; # LVM Partition and Volume name Synchronization #
	90	; Changing the Label of a partition with LVM-info now synchronizes
	91	; the LVM Partition Name with the LVM Volume Name.
	92	; This is the same behavior as MiniLVM.
	93	; Note however that the Label can only be changed when both the
	94	; LVM PartitionName and LVM VolumeName are the same.
	95	; See protected editing below.
	96	;
	97	; # Protected editing of the Label when LVM-info is present #
	98	; When the LVM VolumeName differs from the LVM PartitionName, the user can
	99	; edit the label but it will not be saved to the LVM record on disk.
	100	; This is to protect configurations created with the classic LVM tool.
	101	; Since MiniLVM assigns the same name to both the Partition and the Volume,
	102	; the Label can be edited and will be saved for such partitions.
	103	; To further protect a given configuration, LVM volumes with type 0x35
	104	; cannot be edited at all. This is to ensure that the LVM PartitionNames
	105	; remain unique when Spanning Volumes are used.
	106	;
	107	; # Editing the Label appended spaces #
	108	; When editing and changing the Label of a System using SETUP,
	109	; trailing spaces were stored in the LVM Volume and Partition names.
	110	; These labels need to be padded with zero's.
	111	; This has been fixed.
	112	; This bug is also present in v1.06.
	113	;
	114	; # Reworked Primary Partition <-> LVM-info association #
	115	; The previous way was to use a 1:1 correspondence between the PT-index
	116	; and the LVM-index. However, when the PT is cross-linked, lower entries
	117	; pointing to higher locations on the disk, or vice-versa, incorrect
	118	; LVM-info was associated. Such a cross-linked PT is sometimes generated
	119	; by the LVM engine when creating or deleting multiple partitions at once.
	120	; Best is to intermediately save after creating or deleting a partition
	121	; with (Mini)LVM.
	122	; The new way is to search the LVM-entries for the partition requested.
	123	;
	124	; # Reworked MBR-code to provide two I13X signatures #
	125	; The normal LVM MBR-code uses a special setup to indicate Int13X capability.
	126	; It contains the instruction, MOV EAX,'X31I', and some software checks
	127	; for the presence of the 'I13X' string in the MBR.
	128	; However, the location of this instruction differs between eCS 1.x and
	129	; eCS 2.x LVM MBR-code.
	130	; For compatibility, the v1.0.8 MBR has the 'I13X' string at both locations.
	131	;
	132	; # Fixed booting older eCS installations on HPFS #
	133	; When restoring systems from archive or otherwise generated systems,
	134	; the HPFS BPB sometimes lacked information that AiR-BOOT did not fill in.
	135	; The result was that a wrong partition was booted or that booting
	136	; stalled with the "unable to operate harddisk" message.
	137	; This has been fixed.
	138	;
	139	; # Fixed booting Windows from a logical partition with loader on FAT32 #
	140	; Depending on the configuration, sometimes the NTLDR could not be found.
	141	; This has been fixed.
	142	;
	143	; # Fixed drive-letter feature which was broken in v1.07 #
	144	; a) v1.07 did remember the drive-letter feature was active for a partition,
	145	; but it failed to store the drive-letter because too few configuration
	146	; sectors were saved. This resulted in arbitrary values to be assigned
	147	; to the drive-letter for the partition.
	148	; b) The JFS PBR-code does not use the in-memory BPB but uses the one
	149	; that is on disk. This prevented AiR-BOOT from passing the user assigned
	150	; drive-letter. AiR-BOOT now inserts the drive-letter in the BPB on disk,
	151	; but only if the partition is JFS.
	152	; AB v1.06 is also unable to use the drive-letter feature on JFS.
	153	; As a convenience, a drive-letter in the dl-feature pop-up can now be set
	154	; to "Disabled" by pressing backspace.
	155	; (As opposed to arrowing up/down to get to the "Disabled" entry)
	156	;
	157	; # Fixed stuck phase1 indicator when wrong name entered #
	158	; When using SET(A)BOOT /4:NAME with the MEMDRIVE env-var set,
	159	; and NAME being a non-existing partition, the phase1 indicator
	160	; would stay stuck between reboots.
	161	; This has been fixed.
	162	;
	163	; # Fixed DOS installer (AIRBOOT.COM) #
	164	; Behavior should now be the same as the eCS and WIN installers.
	165	; This re-enables the use of a bootable floppy or usb-stick
	166	; to install AiR-BOOT.
	167	;
	168	; # Fixed booting from FloppyDrive #
	169	; This is actually also broken in v1.06 when Int13X is forced on.
	170	; Now regular BIOS calls are used when booting from floppydrive.
	171	; A fresh AiR-BOOT installation now includes the floppydrive menu entry.
	172	;
	173	; # Fixed chainloading IBM Boot Manager #
	174	; AiR-BOOT v1.06 could chainload IBM-BM but only when it resided on
	175	; the first disk and was located below the 1024 cylinder and forced Int13X
	176	; extensions were disabled.
	177	; AiR-BOOT v1.0.8 can now chainload IBM-BM with forced Int13X extensions
	178	; enabled (the default) and if IBM-BM resides above the 1024 cylinder limit.
	179	; Also, chainloading IBM-BM from the second disk is supported.
	180	; Do not use chainloading IBM-BM unless you really have a need to.
	181	; See the AiR-BOOT Manual for "gotcha's" when using both AiR-BOOT and IBM-BM.
	182	;
	183	; # Corrected contact links #
	184	; Version 1.07 still presented the old contact links to the sourceforge
	185	; repository and the original author.
	186	; This caused confusion with regard to issues with v1.07.
	187	; This has been corrected.
	188	;
[32]	189	; NOTE:
	190	; AB v1.07 had a bug with saving and loading the correct size of the
[36]	191	; configuration. This broke the drive-letter feature.
	192	; As a result, the CRC over the config was also calculated wrongly.
[32]	193	; While AB v1.0.8 fixes this, it has to use the v1.07 way of CRC calculation.
[36]	194	; Otherwise SET(A)BOOT from the eCS v2.1 would break on AB v1.0.8 because it
	195	; sees a corrupt AiR-BOOT configuration.
[32]	196	; This means that the CRC over the AB config is calculated over 5 sectors
	197	; instead of 7, just like in v1.07.
[31]	198	;
[35]	199	; NOTE:
	200	; Because of space constraints most of the debug code has been commented
	201	; out in this version.
	202	; Possibly it will be re-enabled after code cleanup and changing to JWasm.
	203	;
	204	;
[31]	205	; v1.07
	206	; -----
[30]	207	; # Huge Drives and LVM #
[36]	208	; When using disks >512GB under eComStation, the drive geometry changes to
	209	; 127 or 255 sectors per track. Since LVM-info is written at the last sector
	210	; of a track, and AiR-BOOT uses the geometry of the MBR, it cannot find the
	211	; LVM-info and the eCS partition / volume bootsector.
	212	; This has been fixed.
	213	; Now, when an eCS-partition is discovered and the drive is >512GB, AiR-BOOT
	214	; will use the eCS geometry to locate the LVM-info and the bootsector.
[30]	215	;
	216	; # Special loader handling #
[36]	217	; The special handling of partition boot-loaders has been enhanced to
	218	; enable booting of legacy systems on huge drives with or without OS/2
	219	; extended geometry.
[30]	220	;
	221	; # eComStation boot-through after phase 1 #
[36]	222	; Special functionality is implemented to directly boot a newly
	223	; installed eCS system after completing phase 1 of the installation.
	224	; This works in conjuntion with the OS/2 specific SET(A)BOOT.EXE program,
	225	; also part of the AiR-BOOT package.
[30]	226	;
	227	; # Math, Debug, Conv and Aux modules #
[36]	228	; These are used for 32-bit arithmatic on 16-bit code,
	229	; debug the booting process, converting between data-types
	230	; and outputting log-data to the com-port.
[35]	231	;
	232	;
	233	; v1.06
	234	; -----
	235	; This is the last version developed by Martin Kiewitz.
	236	; It serves as the base for the versions above.
	237	; Please do not post your feedback on sourceforge or bother Martin with
[36]	238	; regard to issues with the above versions.
	239	; Use the eCS bug-tracker or the Trac project-page at netlabs and see the
	240	; documentation of this newer versions for the relevant contact information.
[30]	241
	242
[31]	243	;------------------------------------------------------------------------------
	244	; AiR-BOOT / MAIN-CODE
	245	;------------------------------------------------------------------------------
[30]	246	;
[7]	247
[30]	248
[36]	249	; -------------------------
	250	; Rousseau: JUMPS disabled
	251	; -------------------------
[30]	252	; We actually don't want to use this directive because it generates extra
	253	; NOP instructions that we can do without.
	254	; Relative conditional jumps that are out-of-range are manually reworked by
	255	; skipping an unconditional jump to the target on base of complementary
	256	; condition logic and temporary labels.
[31]	257	; TASM also has a bug in that when the .ERR2 directive is used when
	258	; the .386 directive is in effect, the JUMPS directive is also active
	259	; and cannot be turned off.
[30]	260	; NOJUMPS seems to have no effect in this situation.
	261	; In this case 4 NOP instructions are generated after forward referencing jump
	262	; instructions, to allow for automatic recoding by TASM.
	263	; This seems to be a TASM bug. (v2,v3,v4, dunno v5)
	264	;
	265	;JUMPS
	266	;
	267
	268	;
	269	; If defined then each module is prefixed with it's name.
	270	; This is used for debugging purposes.
	271	; It should be off in release code.
	272	;
[37]	273	;ModuleNames equ 1
[30]	274
	275
	276
[37]	277
	278
[30]	279	;
[37]	280	; An ORG directive resets the location counter where code and data is
	281	; generated. If the location counter is reset back to a point where
	282	; code or data already has been generated, this will be overwritten
	283	; without warning.
	284	; This macro is run at every ORG directive to check for this condition,
	285	; and when it occurs further assembly is terminated.
	286	; FIXME: Get JWasm and Tasm use some common ECHO/%OUT method.
	287	; (Tasm only pases first word of non-quoted string to a macro)
	288	;
	289	check_overlap MACRO loc
	290
	291	; Exit macro immediately if no overlap.
	292	; We don't want to assign values to z_last_... if there is no
	293	; overlap because they would then hold the values the last time this
	294	; macro was called and not those of the last overlap.
	295	IF (loc - $) LE 0
	296	EXITM
	297	ENDIF
	298
	299	; Calculate the overlap.
	300	z_last_overlap_location = loc
	301	z_last_overlap_size = (loc - $)
	302
	303	IFDEF JWASM
	304	; Output message.
	305	ECHO
	306	ECHO ERROR: LOCATION OVERLAP DETECTED [JWASM] !
	307	ECHO . THIS IS MOST LIKELY CAUSED BY CODE / DATA
	308	ECHO . EXPANSION TOWARDS AN 'ORG' DIRECTIVE.
	309	ECHO . LOOK AT 'z_last_overlap_location' TO SEE WHERE.
	310	ECHO . LOOK AT 'z_last_overlap_size' TO SEE SIZE.
	311	ECHO . FORCING ERROR...
	312	ECHO
	313	ENDIF
	314	IFDEF TASM
	315	IF2
	316	; Output message (only on pass2).
	317	%OUT
	318	%OUT ERROR: LOCATION OVERLAP DETECTED [TASM] !
	319	%OUT . THIS IS MOST LIKELY CAUSED BY CODE / DATA
	320	%OUT . EXPANSION TOWARDS AN 'ORG' DIRECTIVE.
	321	%OUT . LOOK AT 'z_last_overlap_location' TO WHERE.
	322	%OUT . LOOK AT 'z_last_overlap_size' TO SEE SIZE.
	323	%OUT . FORCING ERROR...
	324	%OUT
	325	ENDIF
	326	ENDIF
	327
	328	; Terminate assembly by forcing an error.
	329	.ERR
	330
	331	ENDM
	332
	333
	334
	335
	336	;
[30]	337	; The first harddisk is BIOS coded 80h.
	338	; This makes a total of 128 disk could be supported using this coding.
	339	; This value is used to store disk-information and this info is allocated
	340	; in the BSS.
	341	;
[37]	342	MaxDisks equ 64
[30]	343
	344	;
	345	; If defined then include DEBUG.ASM and output debug-info to serial-port.
	346	;
[37]	347	;AuxDebug equ 1
[30]	348
[31]	349	; Com-port for debugging, 0 is disabled
[37]	350	BiosComPort equ 0
[30]	351
	352
[31]	353	;
	354	; bits 7-5 = datarate
	355	; (000=110,001=150,010=300,011=600,100=1200,101=2400,110=4800,111=9600 bps)
	356	; bits 4-3 = parity
	357	; (00 or 10 = none, 01 = odd, 11 = even)
	358	; bit 2 = stop-bits
	359	; (set = 2 stop-bits, clear = 1 stop-bit)
	360	; bits 1-0 = data-bits
	361	; (00 = 5, 01 = 6, 10 = 7, 11 = 8)
	362	;
[30]	363
[31]	364	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
[37]	365	AuxInitParms equ 11100011b
[31]	366
	367	; Default word value for BIOS_AuxParms variable
	368	; Note that is has moved since v1.07
[37]	369	BIOS_AuxParmsDefault equ (AuxInitParms SHL 8) OR BiosComPort
[31]	370
[30]	371	;
[7]	372	; If ReleaseCode is not defined, it will produce debug-able code...
[30]	373	;
[37]	374	ReleaseCode equ -1
[7]	375
[31]	376
	377
	378
	379
[30]	380	;
[37]	381	; All Special Equ's for this project
[30]	382	;
[7]	383
[31]	384	; Use different addresses depending on whether in pre-boot
[37]	385	; or debug (dos) environment.
[7]	386	IFDEF ReleaseCode
[37]	387	StartBaseSeg equ 00000h ; Pre-boot, we are in low memory
	388	StartBasePtr equ 07C00h ; BIOS starts our MBR at 0:7C00
	389	ELSE
	390	; Rousseau: where does this value come from ?
	391	; Should be CS.
	392	; Rectified in actual code by ignoring this value.
	393	StartBaseSeg equ 03A98h ; Adjust to DOS segment
	394	StartBasePtr equ 00100h ; We are a .COM file, DOS is active
[7]	395	ENDIF
	396
[30]	397	; Address labels after code-move
[31]	398	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
[30]	399	BootBasePtr equ 0h ; We put our MBR to this location
[31]	400	BootBaseExec equ BootBasePtr+offset MBR_RealStart
	401	StackSeg equ 07000h ; Put the stack below the code
[30]	402
	403	; Video pages, no INT 10h is used for menu-drawing etc.
[7]	404	VideoIO_Page0 equ 0B800h
	405	VideoIO_Page1 equ 0B900h
	406	VideoIO_Page2 equ 0BA00h
	407	VideoIO_Page4 equ 0BC00h
	408	VideoIO_FXSegment equ 0A000h
	409
[30]	410	; Include
[37]	411	Include ../INCLUDE/ASM.INC
[7]	412
[30]	413	; Special line-drawing characters
[37]	414	TextChar_WinLineRight equ 0C4h ; 'Ä'
	415	TextChar_WinLineDown equ 0B3h ; '³'
	416	TextChar_WinRep1 equ 0D1h ; 'Ñ'
	417	TextChar_WinRep2 equ 0C5h ; 'Å'
	418	TextChar_WinRep3 equ 0CFh ; 'Ï'
	419	TextChar_WinRep4 equ 0B5h ; 'µ'
	420	TextChar_WinRep5 equ 0C6h ; 'Æ'
	421	TextChar_WinRep6 equ 0D8h ; 'Ø'
[7]	422
	423	; Offsets for Partition-Entries in MBR/EPRs
[37]	424	LocBRPT_LenOfEntry equ 16 ; Length of a standard MBR or EPR entry
	425	LocBRPT_Flags equ 0 ; Bootable, Hidden, etc.
	426	LocBRPT_BeginCHS equ 1 ; Combined 10-bits cyl with 6 bits
	427	LocBRPT_BeginHead equ 1 ; Start head (0<=H<255) 255 is invalid !
	428	LocBRPT_BeginSector equ 2 ; Start sector (1<=S<=255)
	429	LocBRPT_BeginCylinder equ 3 ; Start cylinder (0<=C<[1024,16384,65536,n])
	430	LocBRPT_SystemID equ 4 ; Type of system using the partition
	431	LocBRPT_EndCHS equ 5 ; Same for end of partition
	432	LocBRPT_EndHead equ 5
	433	LocBRPT_EndSector equ 6
	434	LocBRPT_EndCylinder equ 7
	435	LocBRPT_RelativeBegin equ 8
	436	LocBRPT_AbsoluteLength equ 12
[7]	437
[37]	438	LocBR_Magic equ 510
[7]	439
[29]	440
[34]	441	; Used as a quick compare in LVM.ASM
[37]	442	LocLVM_SignatureByte0 equ 02h
[30]	443
[34]	444	; Offsets for LVM Information Sector.
	445	; These are relative to the start of the LVM sector.
[37]	446	LocLVM_SignatureStart equ 00h ; 02h,'RMBPMFD' (8 bytes)
	447	LocLVM_CRC equ 08h ; CRC is a DWORD
	448	LocLVM_Heads equ 1ch ; Number of heads
	449	LocLVM_Secs equ 20h ; Sectors per Track
	450	LocLVM_DiskName equ 24h ; Name of the disk
	451	LocLVM_StartOfEntries equ 3ch ; (contains maximum of 4 entries)
	452	LocLVM_LenOfEntry equ 3ch ; Length of an LVM-entry
[30]	453
[34]	454	; An LVM info-sector can contain information on max. 4 partitions.
	455	; All 4 entries will be used when there 4 primary partitions defined.
	456	; For logical partitions, the LVM info-sector is located below the start
	457	; of the logical partition and only one LVM entry is used in that logical
	458	; LVM info-sector.
[37]	459	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
[30]	460
[34]	461	; Offsets for LVM entry.
	462	; These are relative to the start of the entry.
[37]	463	LocLVM_VolumeID equ 00h ; is DWORD
	464	LocLVM_PartitionID equ 04h ; is DWORD
	465	LocLVM_PartitionSize equ 08h ; is DWORD
	466	LocLVM_PartitionStart equ 0ch ; is DWORD
	467	LocLVM_OnBootMenu equ 10h ; is on IBM BM Bootmenu
	468	LocLVM_Startable equ 11h ; is Startable (newly installed system)
	469	LocLVM_VolumeLetter equ 12h ; is Drive Letter for partition (C-Z or 0)
	470	LocLVM_Unknown equ 13h ; unknown BYTE
	471
[34]	472	; Truncated to 11 chars when displayed in menu.
	473	; MiniLVM sets both to the same value.
	474	; Also, MiniLVM uses a 0-byte terminator, so the maximum length is 19d.
	475	; Same goes for LocLVM_DiskName.
[37]	476	LocLVM_VolumeName equ 14h ; 20 bytes
	477	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
[30]	478
	479
[34]	480
[7]	481	; Offsets for IPT (Internal Partition Table)
[37]	482	LocIPT_MaxPartitions equ partition_count ; 45 in v1.07
	483	LocIPT_LenOfSizeElement equ 6 ; Size of one Size-Element
	484	LocIPT_LenOfIPT equ 34 ; Length of an IPT-entry
	485	LocIPT_Serial equ 0 ; Serial from MBR ?
	486	LocIPT_Name equ 4 ; Name from FS or LVM (part/vol)
	487	LocIPT_Drive equ 15 ; Drive-ID (80h,81h)
	488	LocIPT_SystemID equ 16 ; Partition-Type (06,07,etc)
	489	LocIPT_Flags equ 17 ; AiR-BOOT Flags for partition (see below)
	490	LocIPT_BootRecordCRC equ 18 ; CRC of Boot-Record
	491	LocIPT_LocationBegin equ 20 ; Begin of Partition
	492	LocIPT_LocationPartTable equ 23 ; PartitionTable of Partition
	493	LocIPT_AbsoluteBegin equ 26 ; Absolute Sector of Begin
	494	LocIPT_AbsolutePartTable equ 30 ; Absolute Sector of PartTable
[7]	495
[38]	496	; Hidden Partition Table
	497	LocHPT_LenOfHPT equ 30 ; Length of an HPT-entry
	498
[30]	499	; AiR-BOOT IPT-Flags
[37]	500	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
	501	LocIPT_DefaultNonBootFlags equ 00000010b ; ...VIBR Detection is always on
[7]	502
[37]	503	Flags_Bootable equ 00000001b
	504	Flags_VIBR_Detection equ 00000010b
	505	Flags_HideFeature equ 00000100b
	506	Flags_DriveLetter equ 00001000b ; OS/2 FAT16/HPFS only
	507	Flags_ExtPartMShack equ 00010000b ; Extended Partition M$-Hack req ?
	508	Flags_NoPartName equ 01000000b
	509	Flags_NowFound equ 10000000b ; temp only in OldPartTable
	510	Flags_SpecialMarker equ 10000000b ; temp only for HiddenSetup
[7]	511
[37]	512	FileSysFlags_BootAble equ 00000001b ; Is this Partition boot-able ?
	513	FileSysFlags_FAT32 equ 00010000b ; FAT 32 specific name getting
	514	FileSysFlags_NoName equ 00100000b ; No Name - use PartitionName
	515	FileSysFlags_DriveLetter equ 01000000b ; DriveLetter Feature possible
[7]	516
[30]	517	; Navigation keys
[37]	518	Keys_Up equ 48h
	519	Keys_Down equ 50h
	520	Keys_Left equ 4Bh
	521	Keys_Right equ 4Dh
	522	Keys_PageUp equ 49h
	523	Keys_PageDown equ 51h
	524	Keys_GrayPlus equ 4Eh
	525	Keys_GrayMinus equ 4Ah
	526	Keys_Plus equ 1Bh
	527	Keys_Minus equ 35h
	528	Keys_ENTER equ 1Ch
	529	Keys_ESC equ 1h
	530	Keys_F1 equ 3Bh
	531	Keys_F10 equ 44h
	532	Keys_C equ 2Eh ; Add. Check auf Ctrl!
	533	Keys_Y equ 2Ch
	534	Keys_Z equ 15h
	535	Keys_N equ 31h
	536	Keys_TAB equ 0Fh
	537	Keys_Delete equ 53h
	538	Keys_Backspace equ 0Eh
	539	Keys_Space equ 20h
[7]	540
[37]	541	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
[7]	542
	543
[37]	544	; ------------------------------------------
	545	; Rousseau: # Changed this from .386 to .286
	546	; ------------------------------------------
	547	; Because of the TASM-bug the processor had to be changed to turn JUMPS
	548	; off. Existing movzx instructions were replaced with 286 equivalent code.
	549	; Out of range relative jumps have been recoded.
	550	; TASM still generates an extra NOP after test [mem],1
	551	; instructions.
	552	; JWasm produces tighter code.
	553	; JWasm:
	554	; With segment overrides, the address is expanded to the bit-width.
	555	; So, .386 will generate a 32-bit address, even in a USE16 segment.
	556	.286
[30]	557
[37]	558	; This influences the uses directive and other stuff,
	559	; like calling-style and local variables.
	560	; The model itself,large, has no effect because we generate
	561	; a binairy image and not a segmented executable.
[30]	562
[37]	563	; Tasm needs a memory model for USES on PROC to work.
	564	IFDEF TASM
	565	;.model large, basic
	566	.model tiny,c
	567	ENDIF
	568
	569	;
	570	; This is used to switch between the original 1-segment (code_seg) and the
	571	; 2-segment (code_seg and bss_data).
	572	; The 2-segment layout was needed for JWasm because it does not treat
	573	; db ? in a code segment as bss-data, even if at the end of the code segment.
	574	; Therefore, a true BSS segment is now used.
	575	; Both the code_seg and the bss_data are grouped to the logical airboot
	576	; segment.
	577	; Note that this influences the offsets in the BSS in the list-file and
	578	; the wdis disassembly file (.WDA).
	579	; They are now segment-relative. The true offset is resolved at link
	580	; time.
	581	;
[42]	582	SEGMENTED EQU 1
[37]	583
	584	IFDEF SEGMENTED
	585	AIRBOOT GROUP IMAGE,VOLATILE
	586	ENDIF
	587
[30]	588	; Our code-segment starts here.
[37]	589	IMAGE SEGMENT USE16 PUBLIC 'MIXED'
[7]	590
[37]	591	IFDEF SEGMENTED
	592	ASSUME CS:AIRBOOT, DS:AIRBOOT, ES:nothing, SS:nothing
	593	ELSE
	594	ASSUME CS:IMAGE, DS:IMAGE, ES:nothing, SS:nothing
	595	ENDIF
[30]	596
	597
[31]	598	;==============================================================================
	599	; Sector 1
[30]	600
	601
[37]	602	; We are not a .com file at 100h but a binary image
	603	; of which only the 1st sector gets loaded at 07c00h.
	604	org 00000h ; Sector 1
[30]	605
	606	; Start of sector 1
	607	; This is the MBR, note the AiRBOOT signature, it's date (2006), version and
	608	; language.
	609	; Version 1.07 was intruduced in 2011.
	610	; It fixes issues with huge drives and lvm and more.
	611
	612	sos1:
	613
	614	; ---------------------------------------------
	615	; Rousseau: # Combined letter and jump offset #
	616	; ---------------------------------------------
	617	; My guess is Martin had a short jump followed by the AiRBOOT signature at first.
	618	; Then he encountered strange behaviour by some M$ operating-systems if the
	619	; the first insruction was not a CLI.
	620	; But there was no room to insert the CLI and of course he did not want to
	621	; change the location of the AiRBOOT signature.
	622	; He solved this by inserting the M$ needed CLI at offset 0 followed by a short
	623	; jump that uses the 'A' of the AiRBOOT signature as the jump displacement.
	624
	625
[31]	626	;------------------------------------------------------------------------------
[37]	627	AiR_BOOT:
[30]	628
[37]	629	; Some M$ operating systems need a CLI
	630	; here otherwise they will go beserk
	631	; and will do funny things during
	632	; boot phase, it's laughable!
	633	cli
[7]	634
[37]	635	; JMP-Short -> MBR_Start
	636	; Uses the 'A' from the signature as the displacement !
	637	db 0EBh
	638
	639	; ID String, Date (DD,MM,CC,YY), Version Number, Language ID
[42]	640	db 'AiRBOOT', 16h, 02h, 20h, 12h, 01h, 08h, TXT_LanguageID
[37]	641
	642	; Total Sectors Count.
	643	; Will get overwritten by FIXCODE.
	644	db 1
	645
	646	; Total Sectors Count,
	647	; Dynamic calculation.
	648	;~ db (CODE_END-$)/512
	649
	650
	651	MBR_CheckCode dw 0 ; Check-Sum for Code
	652
[30]	653	;
	654	; No single instruction below should be changed, added or removed in the code
	655	; below as this will cause the jump-link to go haywire.
[31]	656	;
[37]	657	MBR_Start:
	658	sti ; This opcode is dedicated to:
	659	cld ; =MICROSOFT JUMP DEPARTMENT=
[30]	660
[37]	661	; Setup some base stuff
	662	; AX got loaded wrongly for debug, changed the instructions
	663	; without modifying the number of bytes.
	664	; Don't comment-out the redundant instruction below because this
	665	; will change the number of bytes and break the jump-chain.
	666	mov ax, StartBaseSeg ; The segment we are moving ourself from (NOT USED)
	667	;mov ds, ax
	668	push cs
	669	pop ds
	670	mov si, StartBasePtr ; The offset we are moving ourself from
	671	mov ax, BootBaseSeg ; The target segment we are moving ourself to
	672	mov es, ax
	673	mov di, BootBasePtr ; The target offset we are moving ourself to
[30]	674
[37]	675	; Depending on pre-boot or debug,
	676	; only move first 512 bytes or the whole she-bang++ (65400 bytes)
	677	IFDEF ReleaseCode
	678	mov cx, 256 ; Pre-boot environment
	679	ELSE
	680	mov cx, 32700 ; Debug environment (move ~64kB)
	681	ENDIF
[30]	682
[37]	683	;
	684	; LET's MOVE OURSELVES !
	685	;
	686	rep movsw
[30]	687
[37]	688	; Code an intersegment jump to the new location
	689	db 0EAh
	690	dw BootBaseExec ; This is MBR_RealStart + BootBasePtr
	691	dw BootBaseSeg ; This is 08000h
	692	;jmp far ptr BootBaseSeg:BootBaseExec
[7]	693
[30]	694
	695	;
	696	; Some MBR-functions to provide absolute minimum functionality.
	697	;
	698
	699	;
	700	; Entry-point for halting the system.
	701	;
[7]	702	MBR_HaltSystem:
[37]	703	mov ax, 8600h
	704	xor cx, cx
	705	mov dx, 500
	706	int 15h ; Wait to display the whole screen :]
	707	MBR_HaltSys: cli
	708	jmp MBR_HaltSys
[7]	709
[31]	710
	711
[37]	712	; Comport settings
	713	; It had to be moved to create room for the double I13X
	714	; signature.
	715	; It cannot be in the config-area (sector 55)
	716	; because that area
	717	; is crc-protected.
	718	BIOS_AuxParms dw BIOS_AuxParmsDefault
[31]	719
[30]	720	;
[31]	721	; Reserved space
	722	; Should check overflow here, later...
[30]	723	;
[37]	724	reserved db 6 dup('X')
[30]	725
[31]	726
[37]	727	;
	728	; We arrive here after the first jump using the 'A' of the
	729	; AiR-BOOT signature.
	730	; So we ensure the jump is always at this offset.
	731	; We jump here, because Martin needed to
	732	; insert a CLI on start and did not
	733	; want to change the AiR-BOOT signature
	734	; because of Microsoft inventions...
	735
	736
	737
	738
	739
	740	here = $
	741	org 044h
	742	check_overlap here
	743
	744
	745
	746	; Jump again...
	747	; This time to the setup-code.
	748	jmp MBR_Start
	749
[30]	750	;
	751	; Entry-point when loading fails.
	752	;
[37]	753	db 'LOAD ERROR!', 0
	754	MBR_LoadError Proc Near
	755	mov si, offset $-12
	756	push cs
	757	pop ds
	758	call MBR_Teletype
	759	MBRLE_Halt:
	760	jmp MBRLE_Halt
	761	MBR_LoadError EndP
[7]	762
[30]	763
	764	;
	765	; Entry-point when saving fails.
	766	;
[37]	767	db 'SAVE ERROR!', 0
	768	MBR_SaveError Proc Near
	769	mov si, offset $-12
	770	push cs
	771	pop ds
	772	call MBR_Teletype
	773	MBRSE_Halt:
	774	jmp MBRSE_Halt
	775	MBR_SaveError EndP
[7]	776
[30]	777
	778	; Put text on the screen using the BIOS tele-type function.
	779	; No attributes like color are supported.
[7]	780	; In: SI - Pointer to begin of string (EOS is 0)
	781	; Destroyed: SI
[37]	782	MBR_Teletype Proc Near Uses ax bx cx
	783	mov ah, 0Eh
	784	mov bx, 7
	785	MBRT_Loop:
	786	lodsb
	787	or al, al
	788	jz MBRT_End
	789	int 10h
	790	jmp MBRT_Loop
	791	MBRT_End:
	792	ret
	793	MBR_Teletype EndP
[7]	794
[30]	795	;
	796	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
	797	;
	798
[7]	799	; In: BX - Base Check, DS:SI - Pointer to 512-byte-area to be included
	800	; Out: BX - Base Check Result
	801	; Destroyed: SI will get updated (+512)
[37]	802	MBR_GetCheckOfSector Proc Near Uses ax cx
	803	mov cx, 256
	804	MBRGCOS_Loop:
	805	lodsw
	806	xor ax, 0BABEh
	807	xor bx, ax
	808	loop MBRGCOS_Loop
	809	or bx, bx
	810	jnz MBRGCOS_NoFixUp
	811	mov bx, 1 ; dont allow 0, cause 0 == empty
	812	MBRGCOS_NoFixUp:
	813	ret
	814	MBR_GetCheckOfSector EndP
[7]	815
[30]	816
	817
	818
	819
	820
	821	;
	822	; This is where the rest of AiR-BOOT gets loaded.
	823	;
	824
[31]	825	;------------------------------------------------------------------------------
[7]	826	MBR_RealStart:
[37]	827	mov ax, StackSeg ; 07000h, below the moved code
	828	mov ss, ax
	829	;mov sp, 7FFFh ; Odd stack-pointer ??
	830	mov sp, 7FFEh ; Even is better
	831	mov ax, es ; ES holds segment where we moved to
	832	mov ds, ax ; Set DS==ES to Code Segment
[30]	833
[37]	834	; If we are in debug-mode, all code is moved already,
	835	; so we can directly jump to it.
	836	; One difference is that in debug-mode, the whole .com image is
	837	; loaded by dos while when air-boot is active from the MBR it
	838	; does the loading itself.
	839	IFNDEF ReleaseCode
	840	jmp AiR_BOOT_Start
	841	ENDIF
[30]	842
	843
[37]	844	; Load missing parts from harddrive...
	845	;mov ax, cs ; actually obsolete
	846	;mov es, ax ; actually obsolete
[30]	847
[37]	848	; Load the configuration-sectors from disk.
	849	mov bx, offset Configuration
	850	mov dx, 0080h ; First harddrive, Sector 55
	851	mov cx, 0037h ; Is 55d is config-sector
[30]	852
[37]	853	; Call the i/o-part
	854	call MBR_LoadConfig
[30]	855
[37]	856	jnc MBR_ConfigCopy_NoError
[30]	857
[37]	858	; Some error occured
	859	MBR_ConfigCopy_LoadError:
	860	call MBR_LoadError ; Will Abort BootUp
[30]	861
[37]	862	; Load the code sectors
	863	MBR_ConfigCopy_NoError:
	864	mov bx, offset FurtherMoreLoad
	865	mov dx, 0080h ; First harddrive
	866	mov cx, 0002h ; Second sector
	867	mov ah, 02h
[30]	868
[37]	869	; This location is in the code-segment.
	870	; When segment overrides are applied, the address is
	871	; expanded to the bit-with.
	872	; So the .286 or .386 directive influences the length
	873	; of the instruction, even with a USE16 segment.
	874	mov al, ds:[10h] ; Number of code sectors
	875	int 13h
	876	jnc MBR_RealStart_NoError
	877	jmp MBR_ConfigCopy_LoadError
[31]	878
	879
	880
[37]	881	; [v1.05+]
	882	; Signature for IBM's LVM to detect our "powerful" features ;)
	883	; [v1.0.8+]
	884	; Reworked MBR code to be able to create a
	885	; double 'I13X' signature.
	886	; MBR's created with LVM eCS v1.x have the signature at 0d5h
	887	; MBR's created with LVM eCS v2.x have the signature at 0d0h
	888	; See eCS bugtracker issue #3002
	889	; Update: These are actually MOV EAX,'X31I' instructions
	890	; in the eCS LVM MBR-code. They are at different places in
	891	; the v1.x and v2.x LVM code.
	892	; Let's protect them with an org directive.
[31]	893
[37]	894	here = $
	895	org 00d0h
	896	check_overlap here
	897	;org 00d0h
	898	db 'I13X',0,'I13X',0
[31]	899
[30]	900
[37]	901	MBR_RealStart_NoError:
	902	; Now Check Code with CheckSum
	903	mov si, offset FurtherMoreLoad
[30]	904
[37]	905	;movzx cx, bptr ds:[10h]
	906	mov cl, ds:[10h]
	907	mov ch,0
[31]	908
[37]	909	xor bx, bx
	910	MBR_RealStart_CheckCodeLoop:
	911	call MBR_GetCheckOfSector
	912	loop MBR_RealStart_CheckCodeLoop
[31]	913
	914
[37]	915	cmp MBR_CheckCode, bx
	916	je MBR_RealStart_CheckSuccess
[7]	917
[37]	918	mov si, offset TXT_ERROR_Attention
	919	call MBR_Teletype
	920	mov si, offset TXT_ERROR_CheckCode
	921	call MBR_Teletype
	922	mov si, offset TXT_ERROR_CheckFailed
	923	call MBR_Teletype
	924	jmp MBR_HaltSystem
	925	MBR_RealStart_CheckSuccess:
	926	jmp AiR_BOOT_Start
[30]	927
	928
	929
	930
[37]	931
[31]	932	;------------------------------------------------------------------------------
[37]	933	Include TEXT/TXTMBR.ASM ; All translateable Text in MBR
[31]	934	;------------------------------------------------------------------------------
[30]	935
	936
	937
[31]	938	; This is an ugly kludge function to create space for the
	939	; double 'I13X' signature.
	940	; It loads the configuration sectors, but bx,cx and dx are not initialized
	941	; in this function. That's done around line 500.
	942	; Putting this few bytes here creates just enough room.
[37]	943	MBR_LoadConfig Proc Near
	944	; Changed from conditional assembler to calculated value
	945	; Fixes issue: #2987 -- "air-boot doesn't remember drive letter"
	946	; Size of the ab-configuration in 512 byte sectors
	947	mov al, (MBR_BackUpMBR - Configuration) / 200h
	948	mov ah,02h
	949	int 13h
	950	ret
	951	MBR_LoadConfig EndP
[31]	952
[35]	953
[37]	954	here = $
	955	org 001b8h
	956	check_overlap here
[31]	957
[37]	958	; Disk Signature
	959	; Note that in an LVM 2.x MBR this collides
	960	; with the dummy PTE that it uses to look for IBM-BM
	961	; on the second harddisk.
	962	db 'DSIG'
[31]	963
[37]	964	; Unused word at 01BCh
	965	; An LVM 2.x MBR puts 'CC33' here.
	966	dw '$$'
[35]	967
	968
[37]	969	; Partition Table
	970	db 16 dup('0')
	971	db 16 dup('1')
	972	db 16 dup('2')
	973	db 16 dup('3')
	974
	975	; Boot Sigbature
	976	dw 0aa55h
	977
[30]	978	; End of sector 1
[31]	979	eos1a:
[30]	980
	981
	982
[37]	983
[31]	984	;==============================================================================
	985	; Sector 2
[30]	986
[37]	987	;
	988	; Here starts the second sector, sector 2
	989	;
	990	org 00200h
[30]	991	; Start of sector 2.
	992	sos2:
	993
[31]	994	;
	995	; Everything beyond this point is loaded on startup
	996	; and is NOT existant at first
	997	;
[7]	998	FurtherMoreLoad:
[30]	999
	1000	;
	1001	; Filesystem table correlating id with name.
	1002	;
	1003
[37]	1004	; first Normal-Partition-ID, Hidden-Partition-ID
	1005	; and Default-Partition-Flags.
	1006	; 01h -> Boot-Able
	1007	; 10h -> FAT32 - Name Getting Scheme
	1008	; 20h -> No Name To Get (use Partition Name from IPT)
	1009	; 40h -> 'L' flag possible
[7]	1010	db 'AiRSYS-TABLE'
[37]	1011	FileSysIDs db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
[29]	1012	db 07h, 17h,41h, 08h,017h,21h, 35h,035h,20h,0FCh,017h,41h
	1013	db 09h, 19h,11h, 0Bh,01Bh,11h, 0Ch,01Ch,11h,0EBh,0EBh,01h
[7]	1014	db 63h, 63h,21h, 81h,081h,21h, 83h,083h,21h, 40h,040h,21h
	1015	db 0A5h,0A5h,21h,0A6h,0A6h,21h, 82h,082h,20h,0A7h,0A7h,21h
	1016	db 63h, 63h,21h, 4Dh,04Dh,21h, 4Eh,04Eh,21h, 4Fh,04Fh,21h
	1017	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	1018	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	1019	db 01h, 01h,01h, 01h,001h,01h, 01h,001h,01h, 01h,001h,01h
	1020	db 01h, 01h,01h,0FDh,0FDh,20h, 84h,084h,20h,0A0h,0A0h,20h
	1021	db 0Ah, 0Ah,20h,0FEh,0FEh,21h,0FFh,0FFh,21h, 00h,000h,21h
	1022	db 16 dup (0)
	1023
[37]	1024	FileSysNames db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
[29]	1025	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
	1026	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
[7]	1027	db 'Unix ', 'Minix ', 'Linux ', 'Venix ' ; x row ;)
	1028	db 'BSD/386 ', 'OpenBSD ', 'LinuxSwp', 'NeXTSTEP'
	1029	db 'GNU HURD', 'QNX ', 'QNX ', 'QNX '
	1030	db ' ', ' ', ' ', ' '
	1031	db ' ', ' ', ' ', ' '
	1032	db ' ', ' ', ' ', ' '
	1033	db ' ', 'Kernel ', ' ', '0V-Award'
[36]	1034	; db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
	1035	db 'OS2-BMGR', 'via BIOS', 'Floppy ', 'Unknown '
[7]	1036	; -> 44 Partition-Types
	1037
[30]	1038	; End of sector 2.
	1039	eos2:
	1040
	1041
	1042
	1043
	1044
	1045
	1046
	1047
[31]	1048	;==============================================================================
	1049	; Sector 3
[37]	1050	here = $
	1051	org 00400h
	1052	check_overlap here
	1053
	1054
[30]	1055	; Start of sector 3.
	1056	sos3:
	1057
	1058
	1059
	1060
	1061
	1062
	1063
	1064
	1065
	1066
	1067
	1068
	1069
	1070
	1071
[37]	1072	; ##############################################
	1073	; ## ENTRY-POINT AFTER ALL THE INITIAL HASSLE ##
	1074	; ##############################################
[30]	1075
	1076
	1077
[36]	1078	AiR_BOOT_Start:
[30]	1079
[36]	1080
	1081
	1082	;
	1083	; Since v1.0.8, AiR-BOOT is able to chainload IBM-BM.
	1084	; When IBM-BM resides above the 1024-cylinder limit, the 'I13X'
	1085	; signature is required at 3000:0000, FS needs to contain 3000h
	1086	; and the 32-bit LBA address needs to follow the 'I13X' signature.
	1087	; For booting IBM-BM from the second disk, a copy of the MBR of the
	1088	; first disk is also required at 0000:7E00.
	1089	; This information is derived from the eCS 2.x LVM MBR.
	1090	;
	1091	; So, now is a good time to copy the MBR of the first disk to
	1092	; 0000:7E00 in case the partition that will be started is IBM-BM.
	1093	; This copy is located at 8000:0000 and DS already points to this
	1094	; segment.
	1095	;
[37]	1096	pusha ; Save all the general purpose regs
	1097	push es ; We need ES too, so save its value
	1098	xor ax,ax ; Segment 0000h
	1099	mov es,ax ; Make ES point to it
	1100	mov si,offset BootBasePtr ; Start of AiR-BOOT which has the MBR
	1101	mov di,7e00h ; Destination for the MBR for IBM-BM
	1102	mov cx,100h ; 256 words = 512 bytes
	1103	cld ; Direction from low to high
	1104	rep movsw ; Copy the 256 words of the MBR
	1105	pop es ; Restore previous value of ES
	1106	popa ; Restore all the general purpose regs
[36]	1107
	1108
	1109
[37]	1110	;jmp skip
[30]	1111
[37]	1112	; Rousseau:
	1113	; I should cleanup my garbage here...
[30]	1114
[37]	1115	; Initialize Variable-Tables, Detections, etc.
	1116	call PRECRAP_Main
[30]	1117
[37]	1118	; Number of harddisks is now known
[30]	1119
[37]	1120	call PARTSCAN_ScanForPartitions
[30]	1121
	1122
[37]	1123	; Number of disks found
	1124	mov si, offset DisksFound
	1125	call MBR_Teletype
[30]	1126
[37]	1127	mov al, [TotalHarddiscs]
	1128	call VideoIO_SyncPos
	1129	call VideoIO_PrintByteDynamicNumber
	1130	xor si,si
	1131	call MBR_TeletypeNL
[30]	1132
[37]	1133	; Number of bootable systems indicator
	1134	mov si, offset PartitionsFound
	1135	call MBR_Teletype
[30]	1136
[37]	1137	mov al, [CFG_Partitions]
	1138	call VideoIO_SyncPos
	1139	call VideoIO_PrintByteDynamicNumber
[30]	1140
[37]	1141	xor si,si
	1142	call MBR_TeletypeNL
	1143	call MBR_TeletypeNL
[30]	1144
[37]	1145	call VideoIO_SyncPos
[30]	1146
[37]	1147	mov dl,80h
	1148	call VideoIO_DumpDiskInfo
[30]	1149
[37]	1150	;
	1151	; Enumberate Bootable Systems by name
	1152	; and prepare Phase 1 if active.
	1153	;
	1154	; This can also be implemented using the
	1155	; Installable LVM-flag I think.
	1156	; But at the time I had lesser knowledge about LVM...
	1157	; So this algorithm may change in the future.
	1158	;
	1159	mov si, offset PartitionTable
	1160	xor cx,cx
	1161	mov cl,[CFG_Partitions]
	1162	MBR_Parts:
	1163	add si, 4
	1164	push si
	1165	push si
	1166	;call MBR_TeletypeVolName
	1167	pop si
	1168	call PART_IsInstallVolume
	1169	jnc MBR_Parts_NI
[30]	1170
[37]	1171	; Install Volume
	1172	mov al,' '
	1173	mov bl,7
	1174	mov ah, 0eh
	1175	int 10h
[30]	1176
[37]	1177	mov al,'('
	1178	mov bl,7
	1179	mov ah, 0eh
	1180	int 10h
[30]	1181
[37]	1182	mov al,[CFG_Partitions]
	1183	sub al,cl
	1184	;inc al
	1185	;mov [Menu_EntryAutomatic],al
	1186	mov [CFG_PartAutomatic],al ; Setup entry for install-volume
	1187	mov [CFG_PartLast],al
	1188	mov ah, [eCS_InstallVolume] ; 1st byte is 0 if no phase 1 active
	1189	test ah,ah ; test the byte, ZF is 0 if phase 1 active
	1190	lahf ; flags in ah
	1191	xor ah, 40h ; complement ZF
	1192	and ah, 40h ; mask ZF
	1193	shr ah, 6 ; move ZF to LSB
	1194	mov [CFG_AutomaticBoot], ah ; automatic boot if phase 1 is active
[30]	1195
[36]	1196
[37]	1197	add al,'1'
	1198	mov bl,7
	1199	mov ah, 0eh
	1200	int 10h
[30]	1201
[37]	1202	mov al,')'
	1203	mov bl,7
	1204	mov ah, 0eh
	1205	int 10h
[30]	1206
[37]	1207	mov bx,cx
[30]	1208
[37]	1209	MBR_Parts_NI:
	1210	xor si,si
	1211	;call MBR_TeletypeNL
	1212	pop si
[38]	1213	add si, 30 ; Add remainder of IPT entry
[37]	1214	loop MBR_Parts
[30]	1215
	1216
	1217
	1218
[37]	1219	; Index of automatic start partition
	1220	;mov si, offset AutoStartPart
	1221	;call MBR_Teletype
[30]	1222
[37]	1223	;mov al, [CFG_PartAutomatic]
	1224	;add al, 31h
	1225	;mov ah, 09h
	1226	;mov bx, 15
	1227	;mov cx, 1
	1228	;int 10h
[30]	1229
[37]	1230	;mov al, [CFG_PartAutomatic]
	1231	;add al, 31h
	1232	;mov ah, 0eh
	1233	;mov bx, 15
	1234	;mov cx, 1
	1235	;int 10h
[30]	1236
[37]	1237	xor si,si
	1238	call MBR_TeletypeNL
	1239	xor si,si
	1240	call MBR_TeletypeNL
[30]	1241
[37]	1242	;mov ax,[BIOS_AuxParms]
	1243	;call VideoIO_SyncPos
	1244	;push ax
	1245	;add al,'0'
	1246	;mov bl,7
	1247	;mov ah, 0eh
	1248	;int 10h
	1249	;pop ax
	1250	;xchg al,ah
	1251	;sub al,0a2h
	1252	;mov bl,7
	1253	;mov ah, 0eh
	1254	;int 10h
[30]	1255
	1256
[37]	1257	call MBR_TeletypeSyncPos
[30]	1258
[37]	1259	xor si,si
	1260	call MBR_TeletypeNL
	1261	call MBR_TeletypeNL
[30]	1262
	1263
	1264
[37]	1265	mov si, offset ShowMenu
	1266	call MBR_TeletypeBold
[30]	1267
	1268
	1269	skip:
	1270
	1271
	1272
[37]	1273	;
	1274	; ####################### WAIT FOR KEY ########################
	1275	;
[30]	1276
	1277
[37]	1278	; Rousseau:
	1279	; Wait for key so we can see debug log if ab-menu hangs.
	1280	;;xor ax, ax
	1281	;;int 16h
[30]	1282
[37]	1283	;call SOUND_Beep
[30]	1284
[37]	1285	; Rousseau: delayed save of video-page
[30]	1286
[37]	1287	mov ax, VideoIO_Page1
	1288	call VideoIO_BackUpTo ; Copy BIOS POST to Second Page
[30]	1289
[37]	1290	;call SOUND_Beep
[30]	1291
	1292
[37]	1293	;
	1294	; COM-PORT DEBUG
	1295	;
	1296	;call AuxIO_TeletypeNL
	1297	mov si, offset PartitionTable
	1298	;call AuxIO_DumpSector
	1299	;call AuxIO_TeletypeNL
[30]	1300
[31]	1301
[37]	1302	; Save configuration so phase1 boot-through is disabled
	1303	; on next boot.
	1304	; Moved here to fix that Esc out of SETUP would also save.
	1305	; So moved above the MBR_Main_ReEnterSetup label.
	1306	mov [eCS_InstallVolume], 0 ; disable phase 1 for next boot
	1307	call DriveIO_SaveConfiguration
[31]	1308
	1309
	1310
[37]	1311	;
	1312	; RE-ENTER SETUP
	1313	;
	1314	MBR_Main_ReEnterSetup:
	1315	call SETUP_CheckEnterSETUP
[7]	1316
[37]	1317	;call SOUND_Beep
[30]	1318
[37]	1319	; Rousseau: Every time I see "AfterCrap" I have to laugh :-)
	1320	call AFTERCRAP_Main
[30]	1321
[37]	1322	; [Linux support removed since v1.02]
	1323	; Now get FAT16-Linux Kernel Partition, If requested
	1324	;cmp [CFG_LinuxKrnlPartition], 0FFh
	1325	;je MBR_Main_NoLinuxKrnlPartition
	1326	;call LINUX_InitFAT16access
	1327	;MBR_Main_NoLinuxKrnlPartition:
[7]	1328
[30]	1329
[37]	1330	MBR_Main_ReEnterBootMenuPre:
[30]	1331
[37]	1332	; SetUp PartitionPointers for BootMenu (filter non-bootable)
	1333	call PART_CalculateMenuPartPointers
[7]	1334
[37]	1335	; ...and count that one...
	1336	cmp PartitionPointerCount, 0
	1337	jne MBR_Main_SomethingBootAble
	1338	mov si, offset TXT_NoBootAble
	1339	call MBR_Teletype
	1340	jmp MBR_HaltSystem
[30]	1341
[37]	1342	MBR_Main_SomethingBootAble:
	1343	; FixUp Values, define Timed Setup booting, etc.
	1344	call PART_FixUpDefaultPartitionValues
[7]	1345
[30]	1346
	1347
[37]	1348	; -------------------------------------------------- BOOT-MENU
	1349	MBR_Main_ReEnterBootMenu:
	1350	call BOOTMENU_ResetMenuVars ; reset has to be done
	1351	test CFG_AutomaticBoot, 1
	1352	jz MBR_Main_NoAutomaticBooting
	1353	; ------------------------------------------ AUTOMATIC BOOTING
	1354	; Select automatic partition, disable automatic booting for
	1355	; next time and boot system...
	1356	mov CFG_AutomaticBoot, 0
	1357	call PASSWORD_AskSystemPwd
	1358	mov al, Menu_EntryAutomatic
[30]	1359
[37]	1360	;mov al, 2
[30]	1361
[37]	1362	mov Menu_EntrySelected, al ; zero based
	1363	jmp MBR_Main_NoBootMenu
[7]	1364
	1365	MBR_Main_NoAutomaticBooting:
[30]	1366
[37]	1367	;call SOUND_Beep
[30]	1368
[37]	1369	test CFG_BootMenuActive, 0FFh
	1370	jnz MBR_Main_GotBootMenu
	1371	; ----------------------------------------------- NO BOOT-MENU
	1372	; Select default partition and boot system...
	1373	call PASSWORD_AskSystemPwd
[30]	1374
[37]	1375	;call VideoIO_DBG_WriteString2
[30]	1376
[37]	1377	mov al, Menu_EntryDefault
	1378	;mov al,0 ; zero based
	1379	mov Menu_EntrySelected, al
	1380	jmp MBR_Main_NoBootMenu
[7]	1381
[37]	1382	MBR_Main_GotBootMenu:
	1383	; ------------------------------------------ BOOT-MENU VISUALS
	1384	call FX_StartScreen
[30]	1385
[37]	1386	;call SOUND_Beep
[30]	1387
[37]	1388	call BOOTMENU_BuildBackground
	1389	call BOOTMENU_BuildMain
	1390	call FX_EndScreenRight
	1391	call PASSWORD_AskSystemPwd
	1392	call BOOTMENU_ResetTimedBoot
[30]	1393
[37]	1394	;call SOUND_Beep
[30]	1395
[37]	1396	call BOOTMENU_Execute
[30]	1397
[37]	1398	;call SOUND_Beep
[30]	1399
[37]	1400	jc MBR_Main_ReEnterSetup
	1401	call BOOTMENU_SetVarsAfterMenu
[30]	1402
[37]	1403	;call SOUND_Beep
[30]	1404
[37]	1405	; ---------------------------------------------------- BOOTING
	1406	MBR_Main_NoBootMenu:
	1407	call FX_StartScreen
	1408	call BOOTMENU_BuildGoodBye
	1409	call FX_EndScreenRight
	1410	call PASSWORD_AskChangeBootPwd
[7]	1411
[37]	1412	IFNDEF ReleaseCode
	1413	; Debug Code to terminate DOS .COM program - used for
	1414	; testing AiR-BOOT
	1415	int 3
	1416	mov ax, 6200h
	1417	int 21h
	1418	mov es, bx
	1419	mov ax, 4C00h ; Quit program
	1420	int 21h
	1421	ENDIF
	1422	call ANTIVIR_SaveBackUpMBR
	1423	mov dl, Menu_EntrySelected
[7]	1424
[37]	1425	; -------------------------------------------- START PARTITION
	1426	call PART_StartPartition
[30]	1427
	1428
[31]	1429
[30]	1430	;
	1431	; Include other code-modules here.
	1432	; Because TASM is a multiple pass assembler, forward references
	1433	; are possible.
	1434	;
	1435	b_std_txt:
[37]	1436	Include REGULAR/STD_TEXT.ASM ; Standard (non-translateable text)
[30]	1437	size_std_txt = $-b_std_txt
	1438
	1439	b_driveio:
[37]	1440	Include REGULAR/DRIVEIO.ASM ; Drive I/O, Config Load/Save
[30]	1441	size_driveio = $-b_driveio
	1442
	1443	b_videoio:
[37]	1444	Include REGULAR/VIDEOIO.ASM ; Video I/O
[30]	1445	size_videoio = $-b_videoio
	1446
	1447	b_timer:
[37]	1448	Include REGULAR/TIMER.ASM ; Timer
[30]	1449	size_timer = $-b_timer
	1450
	1451	b_partmain:
[37]	1452	Include REGULAR/PARTMAIN.ASM ; Regular Partition Routines
[30]	1453	size_partmain = $-b_partmain
	1454
	1455	b_partscan:
[37]	1456	Include REGULAR/PARTSCAN.ASM ; Partition Scanning
[30]	1457	size_partscan = $-b_partscan
	1458
	1459	b_bootmenu:
[37]	1460	Include REGULAR/BOOTMENU.ASM ; Boot-Menu
[30]	1461	size_bootmenu = $-b_bootmenu
	1462
	1463	b_password:
[37]	1464	Include REGULAR/PASSWORD.ASM ; Password related
[30]	1465	size_password = $-b_password
	1466
	1467	b_other:
[37]	1468	Include REGULAR/OTHER.ASM ; Other Routines
[30]	1469	size_other = $-b_other
[7]	1470
[30]	1471	; Rousseau: Special modules moved upwards.
	1472	b_main:
[37]	1473	Include SETUP/MAIN.ASM ; The whole AiR-BOOT SETUP
[30]	1474	size_main = $-b_main
	1475
	1476
	1477	IFDEF TXT_IncludeCyrillic
	1478	b_ccharset:
[37]	1479	Include SPECIAL/CHARSET.ASM ; Charset Support (e.g. Cyrillic)
[30]	1480	size_ccharset = $-b_ccharset
	1481	ENDIF
	1482
	1483	b_math:
[37]	1484	Include REGULAR/MATH.ASM ; Math functions (like 32-bit multiply)
[30]	1485	size_math = $-b_math
	1486
	1487
[36]	1488
[30]	1489	IFDEF AuxDebug
	1490	b_debug:
[37]	1491	; Include REGULAR/DEBUG.ASM ; Various debugging routines,
	1492	; uses AUXIO and CONV
[30]	1493	size_debug = $-b_debug
	1494	ENDIF
	1495
	1496	b_auxio:
[37]	1497	;Include REGULAR/AUXIO.ASM ; Com-port support for debugging
[30]	1498	size_auxio = $-b_auxio
	1499
	1500	; Rousseau: moved upwards
	1501	;IFDEF TXT_IncludeCyrillic
[37]	1502	; Include SPECIAL/CHARSET.ASM ; Charset Support (e.g. Cyrillic)
[30]	1503	;ENDIF
	1504
[34]	1505	b_lvm:
[37]	1506	Include SPECIAL/LVM.ASM ; LVM-specific code
[34]	1507	size_lvm = $-b_lvm
	1508
	1509
[30]	1510	; End of sector 3.
	1511	eos3:
	1512
	1513
	1514
	1515
[37]	1516
[31]	1517	;==============================================================================
[30]	1518
[37]	1519	;
	1520	; This is the AiR-BOOT MBR-Protection Image.
	1521	; 04600 / 200h = 23h = 35d sectors are before this point.
	1522	; The stuff generated here gets overwritten when the MBR_PROT.ASM
	1523	; module, which is assembled separately, gets merged.
	1524	; So you won't find the string below in the generated binary.
	1525	;
	1526	; MOVED TO 6800h to create space and have a continuous
	1527	; code block.
	1528	; This makes the RU version buildable again with Tasm.
	1529	;
	1530	;org 04600h ; Sector 36-37
[30]	1531
	1532	; Start of sector 36.
	1533	sos36:
	1534
	1535
[37]	1536
[30]	1537	; End of sector 37, yes this section is 2 sectors long.
	1538	eos37:
	1539
	1540
	1541
	1542
	1543
	1544
	1545
[37]	1546
[31]	1547	;==============================================================================
	1548	; Sector 38-x
[37]	1549	;
	1550	; This section contains translatable texts.
	1551	;
	1552	;org 04A00h
[30]	1553
	1554	; Start of sector 28.
	1555	sos38:
	1556
	1557	b_txtother:
[37]	1558	Include TEXT/TXTOTHER.ASM ; All translateable Text-Strings
[30]	1559	size_txtother = $-b_txtother
	1560
	1561	b_txtmenus:
[37]	1562	Include TEXT/TXTMENUS.ASM ; All translateable Menu-text
[30]	1563	size_txtmenus = $-b_txtmenus
	1564
	1565	b_charset:
[37]	1566	Include TEXT/CHARSET.ASM ; Special Video Charsets (if needed)
[30]	1567	size_charset = $-b_charset
	1568
[36]	1569	b_conv:
[37]	1570	Include REGULAR/CONV.ASM ; Various conversion routines
[36]	1571	size_conv = $-b_conv
[30]	1572
	1573	b_virus:
[37]	1574	Include SPECIAL/VIRUS.ASM ; Virus Detection / Anti-Virus
[30]	1575	size_virus = $-b_virus
[29]	1576	; [Linux support removed since v1.02]
[37]	1577	;Include SPECIAL/FAT16.ASM ; FAT-16 Support
	1578	;Include SPECIAL/LINUX.ASM ; Linux Kernel Support
[30]	1579	b_billsuxx:
[37]	1580	Include SPECIAL/F00K/BILLSUXX.ASM ; Extended Partition - Microsoft-Hack
[30]	1581	size_billsuxx = $-b_billsuxx
	1582
	1583	b_sound:
[37]	1584	Include SPECIAL/SOUND.ASM ; Sound
[30]	1585	size_sound = $-b_sound
	1586
	1587	b_apm:
[37]	1588	Include SPECIAL/APM.ASM ; Power Managment Support
[30]	1589	size_apm = $-b_apm
	1590
	1591	b_fx:
[37]	1592	Include SPECIAL/FX.ASM ; l33t Cooper-Bars/Scrolling <bg>
[30]	1593	size_fx = $-b_fx
	1594
	1595
	1596	;
	1597	; Let's make this always the last module in this section.
	1598	;
[37]	1599	Include BLDDATE.ASM ; Build Date generated by _build.cmd
[30]	1600
	1601	; End of sector x depending on size of translatable texts.
	1602	eosx:
	1603
	1604
	1605
[37]	1606	CODE_END:
[7]	1607
[37]	1608	;org 06A00h - 4
	1609	db 'BABE'
[7]	1610
[37]	1611	;org 06A00h
	1612	db 'FACE'
[7]	1613
[37]	1614	;
	1615	; This is the AiR-BOOT MBR-Protection Image.
	1616	; 04600 / 200h = 34h = 52d sectors are before this point.
	1617	; The stuff generated here gets overwritten when the MBR_PROT.ASM
	1618	; module, which is assembled separately, gets merged.
	1619	; So you won't find the string below in the generated binary.
	1620	;
	1621	here = $
	1622	org 06800h
	1623	check_overlap here
	1624
	1625	MBR_Protection db 'AiR-BOOT MBR-Protection Image'
	1626	; Hardcoded to 1k (1024 bytes)
	1627	db 1024-($-MBR_Protection) dup(0)
	1628
	1629
	1630	;CODE_SEG ENDS
	1631
	1632	;DATA_SEG SEGMENT USE16 PUBLIC 'CODE'
	1633
[31]	1634	;==============================================================================
	1635	; Sector 55
[30]	1636
[37]	1637	;
	1638	; This section contains the AiR-BOOT configuration.
	1639	; Note that it has a version that should be updated
	1640	; when stuff is added.
	1641	; Also add stuff to the end so that offsets of other
	1642	; variables remain vaild.
	1643	;
	1644	here = $
	1645	org 06C00h
	1646	check_overlap here
[30]	1647	sos55:
	1648
	1649
[36]	1650
[37]	1651	Configuration:
	1652	; THERE IS AN INVISIBLE CHAR HERE !!
	1653	; Your editor may not display the invisible
	1654	; character at the end if the 'AiRCFG-TABLE'
	1655	; string. When this character get's deleted,
	1656	; AiR-BOOT will not function because it cannot
	1657	; find the config-signature which includes this
	1658	; invisible character. The code is: 0x0ad.
	1659	db 'AiRCFG-TABLE'
	1660	db 01h, 07h, 'U' ; "Compressed" ID String
	1661	; This is now version 1.07 to have it in sync with
	1662	; the new code version for eCS.
	1663	; Version 1.02 was for code 1.06, 1.03 was internal
	1664	; and 1.04,1.05 and 1.06 do not exist.
	1665	; It is not required for the config to have the
	1666	; same version as the code, so in the future
	1667	; the code version might be higher than the
	1668	; config version if there are no changes to the latter.
[7]	1669
[37]	1670	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
	1671	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
[7]	1672
[37]	1673	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
[7]	1674
[37]	1675	CFG_Partitions db 0 ; Count of partitions in IPT
	1676	db 0 ; Was BootParts - Removed since v0.28b
	1677	CFG_PartDefault db 0 ; Default-Partition (Base=0)
[7]	1678
[37]	1679	CFG_PartLast db 0 ; Which Partition was booted last time ? (Base=0)
	1680	CFG_TimedBoot db 0 ; Timed Boot Enable (for REAL Enable look TimedBootEnable)
	1681	CFG_TimedSecs db 15 ; Timed Boot - How Many Seconds Till Boot
	1682	CFG_TimedDelay dw 123 ; Timed Boot - Delay
	1683	CFG_TimedBootLast db 1 ; Timed Boot - Boot From Last Drive Booted From
	1684	CFG_RememberBoot db 1 ; Remember Manual Boot Choice
	1685	CFG_RememberTimed db 0 ; Remember if Timed Boot (if both disabled: Boot Default)
	1686	CFG_IncludeFloppy db 1 ; Include Floppy Drives in Boot-Menu
	1687	CFG_BootMenuActive db 1 ; Display Boot-Menu (if Disabled: Boot Default)
[7]	1688	; v0.29+ -> 2 - Detailed Bootmenu
[37]	1689	CFG_PartitionsDetect db 1 ; Autodetect New Partitions (Auto-Add!)
	1690	CFG_PasswordSetup db 0 ; Ask Password when entering Setup
	1691	CFG_PasswordSystem db 0 ; Ask Password when booting System
	1692	CFG_PasswordChangeBoot db 0 ; Ask Password when changing boot partition
	1693	CFG_ProtectMBR db 0 ; Protect MBR via TSR ?
	1694	CFG_IgnoreWriteToMBR db 0 ; Just ignore writes to MBR, otherwise crash
	1695	CFG_FloppyBootGetName db 0 ; Gets floppy name for display purposes
	1696	CFG_DetectVirus db 0 ; Detect Virus ?
	1697	CFG_DetectStealth db 0 ; Detect Stealth-Virus ?
	1698	CFG_DetectVIBR db 0 ; Detect BootRecord-Virus ?
	1699	CFG_AutoEnterSetup db 0 ; Automatic Enter Setup (first install!)
	1700	CFG_MasterPassword dw 0101Fh ; Encoded Password (this is just CR)
	1701	dw 07A53h
	1702	dw 0E797h
	1703	dw 0A896h
	1704	CFG_BootPassword dw 0101Fh ; Another CR... ;-)
	1705	dw 07A53h
	1706	dw 0E797h
	1707	dw 0A896h
	1708	db 0 ; Rude-Protection - Removed since v0.28b
	1709	CFG_LinuxRootPartition db 0 ; Linux Root Partition (Base=0)
	1710	CFG_TimedKeyHandling db 0 ; Timed Key Handling (for Timed Boot)
	1711	; 0 - Do Nothing
	1712	; 1 - Reset Time
	1713	; 2 - Stop Time
	1714	CFG_MakeSound db 0 ; Should be clear ;)
	1715	CFG_FloppyBootGetTimer db 0 ; Floppy Name will get updated every 2 secs
	1716	CFG_ResumeBIOSbootSeq db 0 ; If BIOS Boot Sequence should be resumed
	1717	; 0 - Disabled
	1718	; 1 - CD-ROM
	1719	; 2 - Network
	1720	; 3 - ZIP/LS120
	1721	CFG_CooperBars db 0 ; If Cooper Bars should be shown
	1722	CFG_LinuxCommandLine db 75 dup (0) ; Linux Command Line
	1723	CFG_LinuxKrnlPartition db 0FFh ; FAT-16 Linux Kernel Partition (Base=0)
	1724	; FFh -> Disabled
	1725	CFG_LinuxDefaultKernel db 'DEFAULT', 4 dup (32), 0 ; Default Kernel Name
	1726	CFG_LinuxLastKernel db 11 dup (32), 0 ; Last-Booted Kernel Name
	1727	CFG_ExtPartitionMShack db 0 ; Extended Partition M$-Hack Global Enable
	1728	CFG_AutomaticBoot db 0 ; Automatic Booting (only one bootup)
	1729	CFG_PartAutomatic db 0 ; Partition-No for automatic booting
	1730	CFG_ForceLBAUsage db 1 ; LBA-BIOS-API forced on any HDD I/O
	1731	CFG_IgnoreLVM db 0 ; Ignores any LVM-Information
[7]	1732
[30]	1733
	1734	;
	1735	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1736	;
	1737
[37]	1738	; 6cae
[30]	1739	eoc:
	1740
	1741
	1742
[37]	1743	; Allways have the name of the installation volume
	1744	; at this offset.
	1745	; So future config changes will not break auto-install.
	1746	here = $
	1747	org 06D00h
	1748	check_overlap here
	1749
[30]	1750	soiv:
	1751
[31]	1752	; SET(A)BOOT stores the volume name of the eCS system being installed here.
	1753	; It is truncated to 11 chars because AiR-BOOT currently does not support
	1754	; longer labelnames. The name is also capitalized.
[37]	1755	;eCS_InstallVolume db 12 dup (0)
	1756	;eCS_InstallVolume db 'HIGHLOG' ,0
	1757	eCS_InstallVolume db 0,'NOPHASEONE' ,0
	1758	;eCS_InstallVolume db 'ECS-MIDDLE',0,0
	1759	;eCS_InstallVolume db 'ECS-HIGH',0,0,0,0
	1760	;eCS_InstallVolume db 'ECS-HIGH',0,'NO',0
[30]	1761
	1762
[37]	1763	; 6d0c
[30]	1764	; End of sector 55.
	1765	eos55:
	1766
	1767
	1768
	1769
	1770
	1771
[37]	1772	;
	1773	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
	1774	;
	1775
	1776
	1777
	1778	;
	1779	; 06DABh - 06C00h = 01ABh = 427 bytes.
	1780	; Entries allocated down from 06E00 boundary.
	1781	;
	1782	here = $
	1783	org 06DABh ; 427 Boundry
	1784	check_overlap here
	1785	sosvs:
	1786
	1787	; (432 - 5 = 427)
	1788	AutoDrvLetter db 0
	1789	AutoDrvLetterSerial dd 0
	1790
	1791	; This entry is also 34 bytes long (466 - 34 = 432)
	1792	BIOScontIPTentry:
	1793	db 0, 0, 0, 0, ' '
	1794	db 0, 0FEh, Flags_Bootable
	1795	dw 0 ; No Checksum :)
	1796	db 0, 1, 0
	1797	db 0, 1, 0 ; Location of Partition/Boot Record
	1798	dd 0, 0
	1799
[7]	1800	; VIR variables are for the AiR-BOOT Anti Virus Code
	1801	; Most of them are backups of Interrupt Points, so we can check, if a
	1802	; stealth virus is on-line, we can intercept its call.
	1803	; Normal (non stealth) virus are trapped simply by rereading the MBR sector.
[30]	1804	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the system
[7]	1805	; from working, so the user has to press reset. That's saver than a Reboot.
	1806	;
	1807	; If a virus is found on the partition to boot, the system will ONLY halt,
	1808	; nothing more, because we can not remove it. The user shall do it :)
	1809	; Those viruses are detected via a real nasty method...Checksum-Checking of the
	1810	; boot-record, which is to be executed. If it does not match the one in our
	1811	; internal partition table, we will stop. You may however switch this detection
	1812	; off or just reset it by switching 'VIBR Detection'.
	1813
[37]	1814	; 478 - 12 = 466 ; 466 Sub-Part
	1815	CFG_VIR_INT08 dd 0 ; pointer to saved 08h entry point
	1816	CFG_VIR_INT13 dd 0 ; pointer to saved 13h entry point
	1817	CFG_VIR_INT1C dd 0 ; pointer to saved 1Ch entry point
[30]	1818
[37]	1819	; 478 Boundry (512-34)
	1820	; This entry is also 34 bytes long
	1821	FloppyIPTentry db 0, 0, 0, 0, 'FloppyDrive'
	1822	db 0, 0FFh, Flags_Bootable
	1823	dw 0 ; No Checksum :)
	1824	db 0, 1, 0
	1825	db 0, 1, 0 ; Location of Partition/Boot Record
	1826	dd 0, 0
	1827	;------------------------------------------------------------------------------
[30]	1828
[37]	1829	eosvs:
[30]	1830
[7]	1831
	1832
	1833
[37]	1834	;org 06E00h ; Sector 56-57
[30]	1835
[37]	1836	here = $
	1837	org image_size - 0a00h - (image_size - image_size_60secs)
	1838	check_overlap here
[30]	1839
	1840	sos56:
	1841
	1842
	1843
	1844	; Rousseau: This is the start of the AiR-BOOT IPT
	1845
[37]	1846	PartitionTable: ; no-partitions detected... :]
[7]	1847	; db 1, 0, 0, 0, 'Harddisc 1'
	1848	; db 0, 0FFh, Flags_BootAble
	1849	; dw 0 ; No Checksum :)
	1850	; db 0, 0, 1
	1851	; db 0, 0, 1 ; Location of Partition/Boot Record
	1852	; dd 0, 0
	1853
[37]	1854	; Format is:
	1855	;============
	1856	; SerialNumber * 4
	1857	; PartitionName * 11
	1858	; Drive * 1
	1859	; SystemID * 1 (means the partition type)
	1860	; Flags * 1
	1861	; Checksum * 2 (for virus checking)
	1862	; LocationBegin * 3 (where the partition begins)
	1863	; LocationPartTab * 3 (where the partition table is)
	1864	; AbsoluteBegin * 4 (where the partition begins, in absolute sectors)
	1865	; AbsolutePartTab * 4 (where the partition table is, in absolute sectors)
	1866	; --------------------> 34 Bytes (total maximum partition-entries = 30)
[7]	1867
[38]	1868	db (LocIPT_MaxPartitions * LocIPT_LenOfIPT) dup (0)
[30]	1869
[37]	1870
	1871	; 73fa !!!!!!!!!!!!!!
[30]	1872	eos56:
	1873
	1874
	1875
[37]	1876
	1877	;org 071F6h
	1878	; 73F6
	1879
	1880	; No need to check overlap here because this string will
	1881	; be overwritten if the maximum partition count is reached.
	1882	; So this is not a critical boundary.
	1883	org image_size - 600h - (image_size - image_size_60secs) / 2 - 0ah
	1884
[30]	1885	soiptsig:
[37]	1886	db 'AiRBOOTPAR' ; 1K internal partition table
[30]	1887
	1888
	1889
	1890	eoiptsig:
	1891
	1892
[37]	1893
[31]	1894	;------------------------------------------------------------------------------
	1895	;org 07200h ; Sector 58
[37]	1896
	1897	here = $
	1898	org image_size - 600h - (image_size - image_size_60secs) / 2
	1899	check_overlap here
[30]	1900	soipt:
	1901	sos58:
[37]	1902	; 7400h
[38]	1903	HidePartitionTable db (LocIPT_MaxPartitions * LocHPT_LenOfHPT) dup (0FFh)
[37]	1904	; Format is:
	1905	;============
	1906	; PartitionPtr : BYTE * 30
[38]	1907	; --------------------> 30 Bytes * 45
[30]	1908
[38]	1909	DriveLetters db LocIPT_MaxPartitions dup (0)
[37]	1910	; Format is:
	1911	;============
	1912	; Drive-Letter : BYTE (80h-C:, 81h-D:)
[38]	1913	; --------------------> 1 Byte * 45
[7]	1914
[36]	1915	;
	1916	; There is some room here, but this is the configuration section.
	1917	; So not available for code.
	1918	;
	1919
[30]	1920	eos58:
	1921	eoipt:
[7]	1922
[30]	1923
	1924
	1925
[37]	1926	;org 075F6h
	1927	; No need to check overlap here because this string will
	1928	; be overwritten if the maximum partition count is reached.
	1929	; So this is not a critical boundary.
	1930	org image_size - 200h -0ah
	1931	check_overlap here
[30]	1932
	1933	sohidsig:
[37]	1934	;
	1935	db 'AiRBOOTHID' ; 1K internal Hide-partition table
[30]	1936
[37]	1937
[30]	1938	eohidsig:
	1939
	1940
	1941
	1942
	1943
[37]	1944
[31]	1945	;------------------------------------------------------------------------------
[37]	1946	;org 07600h
	1947
	1948	here = $
	1949	org image_size - 200h ; Sector 60
	1950	check_overlap here
	1951
[30]	1952	sohid:
	1953	sos60:
[31]	1954
[37]	1955	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp - Just to fill this sector with something',0
	1956	AirBootRocks db 'AiR-BOOT Rocks!',0
[7]	1957
[37]	1958	db 512-($-sohid)-2 dup(0)
[36]	1959
[30]	1960	eos60:
	1961	eohid:
	1962
	1963
	1964
	1965
[37]	1966	;org 077FEh
	1967
	1968	here = $
	1969	org image_size - 2
	1970	check_overlap here
	1971	dw 0BABEh
	1972
[30]	1973	eoab:
	1974
[37]	1975
	1976	IFDEF SEGMENTED
[30]	1977	;
	1978	; End of AiR-BOOT code and data.
	1979	;
	1980
[37]	1981	IMAGE ENDS
[30]	1982
[37]	1983	;DATA_SEG ENDS
	1984
[30]	1985	;
[37]	1986	; Uninitialized Data (BSS)
[30]	1987	;
[37]	1988	VOLATILE SEGMENT USE16 PUBLIC 'BSS'
	1989
	1990	ENDIF
	1991
[30]	1992	sobss:
[31]	1993	;------------------------------------------------------------------------------
[37]	1994	;
[38]	1995	; Removed org for BSS data to be more compatible
	1996	; with segment-concatenated layout.
[37]	1997	;
[42]	1998	; What happens before this space ??
	1999	; If org 0 corruption occurs.
	2000	;
	2001	org 02400h ; Uninitialized
[37]	2002
	2003
[7]	2004	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
	2005	BeginOfVariables:
[37]	2006	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
	2007	JfsPBR db 512 dup (?) ; Temporary Sector for JFS PBR writeback
	2008	LVMSector db 512 dup (?) ; Temporary Sector for LVM
	2009	TmpSector db 512 dup (?) ; Temporary Sector
[30]	2010
[7]	2011	; Everything used to build a new IPT and reference it to the old one
[37]	2012	NewPartTable db 1536 dup (?) ; New Partition Table
[38]	2013	NewHidePartTable db partition_count * LocHPT_LenOfHPT dup (?) ; New Hide-Partition Table
[37]	2014	NewDriveLetters db partition_count dup (?) ; Logical Drive-Letters
[7]	2015
[37]	2016	PartitionSizeTable db partition_count * 6 dup (?) ; Size-Table (6 bytes per partition)
	2017	PartitionPointers dw 52 dup (?) ; Maximum is 52 entries till now
	2018	PartitionPointerCount db ? ; Count of total Partition Pointers
	2019	PartitionXref db partition_count dup (?) ; X-Reference Table
	2020	PartitionVolumeLetters db partition_count dup (?) ; Volume-Letters
[31]	2021	; 0 - no LVM support
	2022	; 1 - LVM support, but no letter
	2023	; 'C'-'Z' - assigned drive letter
[7]	2024
[37]	2025	TotalHarddiscs db ? ; Total harddrives (by POST)
	2026	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
	2027	NewPartitions db ? ; Freshly found partitions
	2028	; Independent of SaveConfiguration
[7]	2029
[37]	2030	VideoIO_Segment dw ? ; Segment for Video I/O
[7]	2031
[37]	2032	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
	2033	ExtendedAbsPosSet db ? ; If Absolute Position set
[7]	2034
[37]	2035	CurPartition_Location dw 4 dup (?) ; Where did current partition come from?
	2036	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
	2037	; (filled out by PreCrap)
	2038	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
	2039	; (for detailed error message)
[7]	2040
[29]	2041	; [Linux support removed since v1.02]
	2042	;GotLinux db ? ; 1-Linux found
[7]	2043
[37]	2044	Menu_EntrySelected db ? ; Which partition we boot this time...
	2045	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
	2046	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
	2047	Menu_TotalParts db ? ; Copy of CFG_BootParts
	2048	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
	2049	Menu_EntryDefault db ? ; Default Entry in filtered View
	2050	Menu_EntryLast db ? ; LastBooted Entry in filtered View
	2051	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
[7]	2052	; - All adjusted to menu locations
	2053
[37]	2054	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
	2055	PartSetup_ActivePart db ? ; Active Partition
	2056	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
	2057	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
	2058	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
[7]	2059
[37]	2060	TimedBootEnable db ? ; Local Enable/Disable for timed boot
	2061	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here ;)
	2062	TimedSecondLeft db ? ; How many seconds are left till boom ?
	2063	TimedSecondBack db ? ; To get a modification noticed
	2064	TimedBootUsed db ? ; Timed Boot used for bootup ?
	2065	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
	2066	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
	2067	SETUP_ExitEvent db ? ; Exit Event to end SETUP
	2068	TempPasswordEntry db 17 dup (?)
	2069	SETUP_OldPwd db 17 dup (?)
	2070	SETUP_NewPwd db 17 dup (?)
	2071	SETUP_VerifyPwd db 17 dup (?)
	2072	StartSoundPlayed db ?
	2073	ChangePartNameSave db ?
[7]	2074
[37]	2075	FX_UseCount dw ?
	2076	FX_OverallTimer dw ?
	2077	FX_WideScrollerTimer dw ?
	2078	FX_WideScrollerCurPos dw ?
	2079	FX_WideScrollerSpeed db ?
	2080	FX_WideScrollerSpeedState db ?
	2081	FX_WideScrollerDirection db ?
	2082	FX_WideScrollerAbsDirection db ?
	2083	FX_WideScrollerBounceSpeed db ?
	2084	FX_CooperBarsTimer dw ?
[7]	2085
[29]	2086	; [Linux support removed since v1.02]
	2087	;FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
	2088	;FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
	2089	;FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
	2090	;FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
	2091	;FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
	2092	;FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
	2093	;FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
	2094	;FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
	2095	;FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
	2096	;FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
	2097	;
	2098	;LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
	2099	;LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
	2100	;LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
[30]	2101	;EndOfVariables:
[7]	2102
[29]	2103	; Dynamically Generated Tables - do not need to get initialized with NUL
[37]	2104	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
	2105	FX_CooperState db 7 dup (?)
	2106	FX_SinusPos db 7 dup (?)
	2107	FX_CooperPos dw 7 dup (?)
	2108	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
	2109	LVM_CRCTable dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
[7]	2110
[30]	2111
	2112
	2113	;
	2114	; Rousseau: added some stuff.
	2115	;
	2116
	2117
	2118	;EVEN
[37]	2119	HugeDisk db MaxDisks dup(?)
	2120	TrueSecs dd MaxDisks dup(?)
[30]	2121
	2122	; BIOS geometry of the boot-drive
	2123	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
	2124	; If Int13X is supported those values are used, otherwise the legacy values.
[37]	2125	BIOS_Cyls dd MaxDisks dup(?)
	2126	BIOS_Heads dd MaxDisks dup(?)
	2127	BIOS_Secs dd MaxDisks dup(?)
	2128	BIOS_Bytes dw MaxDisks dup(?)
	2129	BIOS_TotalSecs dq MaxDisks dup(?)
[30]	2130
	2131	; LBA geometry of the boot-drive
	2132	; Note that these values are taken from the BPB of a partition boot-record
[37]	2133	LVM_Cyls dd MaxDisks dup(?)
	2134	LVM_Heads dd MaxDisks dup(?)
	2135	LVM_Secs dd MaxDisks dup(?)
	2136	LVM_Bytes dw MaxDisks dup(?)
	2137	LVM_TotalSecs dq MaxDisks dup(?)
[30]	2138
	2139	; OS/2 geometry of the boot-drive
	2140	; Note that these values are taken from the BPB of a partition boot-record
[37]	2141	LOG_Cyls dd MaxDisks dup(?)
	2142	LOG_Heads dd MaxDisks dup(?)
	2143	LOG_Secs dd MaxDisks dup(?)
	2144	LOG_Bytes dw MaxDisks dup(?)
	2145	LOG_TotalSecs dq MaxDisks dup(?)
[30]	2146
	2147	; Rousseau: moved here
	2148	EndOfVariables:
	2149
	2150	; Temporary buffer for 48h INT13X bios call
	2151	; Word aligned
	2152	;even
	2153	;align 2
	2154
	2155	;db 1 dup(?)
	2156
[37]	2157	i13xbuf dw 1 dup (?) ; Size of the buffer;
	2158	; this param must be present.
	2159	; Code inserts it.
	2160	db 126 dup(?) ; The buffer itself.
	2161	i13xbuf_size = $-offset i13xbuf-2 ; Size of buffer
	2162	; (excluding the size word at the start).
[30]	2163
	2164	eobss:
	2165
[37]	2166	IFDEF SEGMENTED
	2167	VOLATILE ENDS
	2168	ELSE
[39]	2169	IMAGE ENDS
[37]	2170	ENDIF
	2171	END AIR_BOOT
[30]	2172
[37]	2173
	2174

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