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AIR-BOOT.ASM@ 39

Last change on this file since 39 was 39, checked in by Ben Rietbroek, 12 years ago

Converting to JWasm -- phase 2 (not working) [2012-02-15]

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!!

File size: 77.7 KB

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

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