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AIR-BOOT.ASM@ 41

Last change on this file since 41 was 40, checked in by Ben Rietbroek, 12 years ago

Converting to JWasm -- phase 3 (not 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!!

Problems

o Problem with location of BSS
o Problem with segments

Info

o Adjusted DISCLAIM.TXT

File size: 77.8 KB

Line
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
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	;
27
28
29	;IFDEF JWASM
30	; db 'JWASM'
31	;ENDIF
32	;IFDEF TASM
33	; db 'TASM'
34	;ENDIF
35
36
37
38	;IF DEBUG_LEVEL EQ 0
39	; db 'L0'
40	;ELSE
41	; db 'Lx'
42	;ENDIF
43
44
45	; ---------------------------------
46	; Rousseau: Fixes and Enhancements
47	; ---------------------------------
48	;
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	; ----------------------
80	; # Changed version format to be more WarpIN compatible #
81	; This is a cosmetic change only, the internal format has not changed.
82	;
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	;
189	; NOTE:
190	; AB v1.07 had a bug with saving and loading the correct size of the
191	; configuration. This broke the drive-letter feature.
192	; As a result, the CRC over the config was also calculated wrongly.
193	; While AB v1.0.8 fixes this, it has to use the v1.07 way of CRC calculation.
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.
196	; This means that the CRC over the AB config is calculated over 5 sectors
197	; instead of 7, just like in v1.07.
198	;
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	;
205	; v1.07
206	; -----
207	; # Huge Drives and LVM #
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.
215	;
216	; # Special loader handling #
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.
220	;
221	; # eComStation boot-through after phase 1 #
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.
226	;
227	; # Math, Debug, Conv and Aux modules #
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.
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
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.
241
242
243	;------------------------------------------------------------------------------
244	; AiR-BOOT / MAIN-CODE
245	;------------------------------------------------------------------------------
246	;
247
248
249	; -------------------------
250	; Rousseau: JUMPS disabled
251	; -------------------------
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.
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.
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	;
273	;ModuleNames equ 1
274
275
276
277
278
279	;
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	;
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	;
342	MaxDisks equ 64
343
344	;
345	; If defined then include DEBUG.ASM and output debug-info to serial-port.
346	;
347	;AuxDebug equ 1
348
349	; Com-port for debugging, 0 is disabled
350	BiosComPort equ 0
351
352
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	;
363
364	; 9600 bps, no parity, 1 stop-bit, 8 bits per char
365	AuxInitParms equ 11100011b
366
367	; Default word value for BIOS_AuxParms variable
368	; Note that is has moved since v1.07
369	BIOS_AuxParmsDefault equ (AuxInitParms SHL 8) OR BiosComPort
370
371	;
372	; If ReleaseCode is not defined, it will produce debug-able code...
373	;
374	ReleaseCode equ -1
375
376
377
378
379
380	;
381	; All Special Equ's for this project
382	;
383
384	; Use different addresses depending on whether in pre-boot
385	; or debug (dos) environment.
386	IFDEF ReleaseCode
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
395	ENDIF
396
397	; Address labels after code-move
398	BootBaseSeg equ 08000h ; Pre-boot, in the low 640K
399	BootBasePtr equ 0h ; We put our MBR to this location
400	BootBaseExec equ BootBasePtr+offset MBR_RealStart
401	StackSeg equ 07000h ; Put the stack below the code
402
403	; Video pages, no INT 10h is used for menu-drawing etc.
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
410	; Include
411	Include ../INCLUDE/ASM.INC
412
413	; Special line-drawing characters
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'
422
423	; Offsets for Partition-Entries in MBR/EPRs
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
437
438	LocBR_Magic equ 510
439
440
441	; Used as a quick compare in LVM.ASM
442	LocLVM_SignatureByte0 equ 02h
443
444	; Offsets for LVM Information Sector.
445	; These are relative to the start of the LVM sector.
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
453
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.
459	LocLVM_MaxEntries equ 4 ; Max entries in an LVM-sector
460
461	; Offsets for LVM entry.
462	; These are relative to the start of the entry.
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
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.
476	LocLVM_VolumeName equ 14h ; 20 bytes
477	LocLVM_PartitionName equ 28h ; 20 bytes (Used in menu)
478
479
480
481	; Offsets for IPT (Internal Partition Table)
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
495
496	; Hidden Partition Table
497	LocHPT_LenOfHPT equ 30 ; Length of an HPT-entry
498
499	; AiR-BOOT IPT-Flags
500	LocIPT_DefaultFlags equ 00000011b ; Don't know if boot-able :)
501	LocIPT_DefaultNonBootFlags equ 00000010b ; ...VIBR Detection is always on
502
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
511
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
516
517	; Navigation keys
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
540
541	Keys_Flags_EnterSetup equ 1100b ; Strg+Alt (AL)
542
543
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
557
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.
562
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	;
582	;SEGMENTED EQU 1
583
584	IFDEF SEGMENTED
585	AIRBOOT GROUP IMAGE,VOLATILE
586	ENDIF
587
588	; Our code-segment starts here.
589	IMAGE SEGMENT USE16 PUBLIC 'MIXED'
590
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
596
597
598	;==============================================================================
599	; Sector 1
600
601
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
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
626	;------------------------------------------------------------------------------
627	AiR_BOOT:
628
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
634
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
640	db 'AiRBOOT', 15h, 02h, 20h, 12h, 01h, 08h, TXT_LanguageID
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
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.
656	;
657	MBR_Start:
658	sti ; This opcode is dedicated to:
659	cld ; =MICROSOFT JUMP DEPARTMENT=
660
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
674
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
682
683	;
684	; LET's MOVE OURSELVES !
685	;
686	rep movsw
687
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
693
694
695	;
696	; Some MBR-functions to provide absolute minimum functionality.
697	;
698
699	;
700	; Entry-point for halting the system.
701	;
702	MBR_HaltSystem:
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
709
710
711
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
719
720	;
721	; Reserved space
722	; Should check overflow here, later...
723	;
724	reserved db 6 dup('X')
725
726
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
750	;
751	; Entry-point when loading fails.
752	;
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
762
763
764	;
765	; Entry-point when saving fails.
766	;
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
776
777
778	; Put text on the screen using the BIOS tele-type function.
779	; No attributes like color are supported.
780	; In: SI - Pointer to begin of string (EOS is 0)
781	; Destroyed: SI
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
794
795	;
796	; Rousseau: DO NOT ADD CODE TO THIS SECTION !
797	;
798
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)
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
815
816
817
818
819
820
821	;
822	; This is where the rest of AiR-BOOT gets loaded.
823	;
824
825	;------------------------------------------------------------------------------
826	MBR_RealStart:
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
833
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
842
843
844	; Load missing parts from harddrive...
845	;mov ax, cs ; actually obsolete
846	;mov es, ax ; actually obsolete
847
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
852
853	; Call the i/o-part
854	call MBR_LoadConfig
855
856	jnc MBR_ConfigCopy_NoError
857
858	; Some error occured
859	MBR_ConfigCopy_LoadError:
860	call MBR_LoadError ; Will Abort BootUp
861
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
868
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
878
879
880
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.
893
894	here = $
895	org 00d0h
896	check_overlap here
897	;org 00d0h
898	db 'I13X',0,'I13X',0
899
900
901	MBR_RealStart_NoError:
902	; Now Check Code with CheckSum
903	mov si, offset FurtherMoreLoad
904
905	;movzx cx, bptr ds:[10h]
906	mov cl, ds:[10h]
907	mov ch,0
908
909	xor bx, bx
910	MBR_RealStart_CheckCodeLoop:
911	call MBR_GetCheckOfSector
912	loop MBR_RealStart_CheckCodeLoop
913
914
915	cmp MBR_CheckCode, bx
916	je MBR_RealStart_CheckSuccess
917
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
927
928
929
930
931
932	;------------------------------------------------------------------------------
933	Include TEXT/TXTMBR.ASM ; All translateable Text in MBR
934	;------------------------------------------------------------------------------
935
936
937
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.
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
952
953
954	here = $
955	org 001b8h
956	check_overlap here
957
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'
963
964	; Unused word at 01BCh
965	; An LVM 2.x MBR puts 'CC33' here.
966	dw '$$'
967
968
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
978	; End of sector 1
979	eos1a:
980
981
982
983
984	;==============================================================================
985	; Sector 2
986
987	;
988	; Here starts the second sector, sector 2
989	;
990	org 00200h
991	; Start of sector 2.
992	sos2:
993
994	;
995	; Everything beyond this point is loaded on startup
996	; and is NOT existant at first
997	;
998	FurtherMoreLoad:
999
1000	;
1001	; Filesystem table correlating id with name.
1002	;
1003
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
1010	db 'AiRSYS-TABLE'
1011	FileSysIDs db 01h, 11h,01h, 04h,014h,01h, 06h,016h,41h, 0Eh,00Eh,01h
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
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
1024	FileSysNames db 'FAT12 ', 'FAT16 ', 'FAT16Big', 'FAT16Big'
1025	db 'HPFS ', 'NTFS ', 'LVM-Data', 'JFS '
1026	db 'FAT32 ', 'FAT32 ', 'FAT32 ', 'BeOS '
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'
1034	; db 'OS/2 Man', 'via BIOS', 'Floppy ', 'Unknown '
1035	db 'OS2-BMGR', 'via BIOS', 'Floppy ', 'Unknown '
1036	; -> 44 Partition-Types
1037
1038	; End of sector 2.
1039	eos2:
1040
1041
1042
1043
1044
1045
1046
1047
1048	;==============================================================================
1049	; Sector 3
1050	here = $
1051	org 00400h
1052	check_overlap here
1053
1054
1055	; Start of sector 3.
1056	sos3:
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072	; ##############################################
1073	; ## ENTRY-POINT AFTER ALL THE INITIAL HASSLE ##
1074	; ##############################################
1075
1076
1077
1078	AiR_BOOT_Start:
1079
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	;
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
1107
1108
1109
1110	;jmp skip
1111
1112	; Rousseau:
1113	; I should cleanup my garbage here...
1114
1115	; Initialize Variable-Tables, Detections, etc.
1116	call PRECRAP_Main
1117
1118	; Number of harddisks is now known
1119
1120	call PARTSCAN_ScanForPartitions
1121
1122
1123	; Number of disks found
1124	mov si, offset DisksFound
1125	call MBR_Teletype
1126
1127	mov al, [TotalHarddiscs]
1128	call VideoIO_SyncPos
1129	call VideoIO_PrintByteDynamicNumber
1130	xor si,si
1131	call MBR_TeletypeNL
1132
1133	; Number of bootable systems indicator
1134	mov si, offset PartitionsFound
1135	call MBR_Teletype
1136
1137	mov al, [CFG_Partitions]
1138	call VideoIO_SyncPos
1139	call VideoIO_PrintByteDynamicNumber
1140
1141	xor si,si
1142	call MBR_TeletypeNL
1143	call MBR_TeletypeNL
1144
1145	call VideoIO_SyncPos
1146
1147	mov dl,80h
1148	call VideoIO_DumpDiskInfo
1149
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
1170
1171	; Install Volume
1172	mov al,' '
1173	mov bl,7
1174	mov ah, 0eh
1175	int 10h
1176
1177	mov al,'('
1178	mov bl,7
1179	mov ah, 0eh
1180	int 10h
1181
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
1195
1196
1197	add al,'1'
1198	mov bl,7
1199	mov ah, 0eh
1200	int 10h
1201
1202	mov al,')'
1203	mov bl,7
1204	mov ah, 0eh
1205	int 10h
1206
1207	mov bx,cx
1208
1209	MBR_Parts_NI:
1210	xor si,si
1211	;call MBR_TeletypeNL
1212	pop si
1213	add si, 30 ; Add remainder of IPT entry
1214	loop MBR_Parts
1215
1216
1217
1218
1219	; Index of automatic start partition
1220	;mov si, offset AutoStartPart
1221	;call MBR_Teletype
1222
1223	;mov al, [CFG_PartAutomatic]
1224	;add al, 31h
1225	;mov ah, 09h
1226	;mov bx, 15
1227	;mov cx, 1
1228	;int 10h
1229
1230	;mov al, [CFG_PartAutomatic]
1231	;add al, 31h
1232	;mov ah, 0eh
1233	;mov bx, 15
1234	;mov cx, 1
1235	;int 10h
1236
1237	xor si,si
1238	call MBR_TeletypeNL
1239	xor si,si
1240	call MBR_TeletypeNL
1241
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
1255
1256
1257	call MBR_TeletypeSyncPos
1258
1259	xor si,si
1260	call MBR_TeletypeNL
1261	call MBR_TeletypeNL
1262
1263
1264
1265	mov si, offset ShowMenu
1266	call MBR_TeletypeBold
1267
1268
1269	skip:
1270
1271
1272
1273	;
1274	; ####################### WAIT FOR KEY ########################
1275	;
1276
1277
1278	; Rousseau:
1279	; Wait for key so we can see debug log if ab-menu hangs.
1280	;;xor ax, ax
1281	;;int 16h
1282
1283	;call SOUND_Beep
1284
1285	; Rousseau: delayed save of video-page
1286
1287	mov ax, VideoIO_Page1
1288	call VideoIO_BackUpTo ; Copy BIOS POST to Second Page
1289
1290	;call SOUND_Beep
1291
1292
1293	;
1294	; COM-PORT DEBUG
1295	;
1296	;call AuxIO_TeletypeNL
1297	mov si, offset PartitionTable
1298	;call AuxIO_DumpSector
1299	;call AuxIO_TeletypeNL
1300
1301
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
1308
1309
1310
1311	;
1312	; RE-ENTER SETUP
1313	;
1314	MBR_Main_ReEnterSetup:
1315	call SETUP_CheckEnterSETUP
1316
1317	;call SOUND_Beep
1318
1319	; Rousseau: Every time I see "AfterCrap" I have to laugh :-)
1320	call AFTERCRAP_Main
1321
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:
1328
1329
1330	MBR_Main_ReEnterBootMenuPre:
1331
1332	; SetUp PartitionPointers for BootMenu (filter non-bootable)
1333	call PART_CalculateMenuPartPointers
1334
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
1341
1342	MBR_Main_SomethingBootAble:
1343	; FixUp Values, define Timed Setup booting, etc.
1344	call PART_FixUpDefaultPartitionValues
1345
1346
1347
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
1359
1360	;mov al, 2
1361
1362	mov Menu_EntrySelected, al ; zero based
1363	jmp MBR_Main_NoBootMenu
1364
1365	MBR_Main_NoAutomaticBooting:
1366
1367	;call SOUND_Beep
1368
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
1374
1375	;call VideoIO_DBG_WriteString2
1376
1377	mov al, Menu_EntryDefault
1378	;mov al,0 ; zero based
1379	mov Menu_EntrySelected, al
1380	jmp MBR_Main_NoBootMenu
1381
1382	MBR_Main_GotBootMenu:
1383	; ------------------------------------------ BOOT-MENU VISUALS
1384	call FX_StartScreen
1385
1386	;call SOUND_Beep
1387
1388	call BOOTMENU_BuildBackground
1389	call BOOTMENU_BuildMain
1390	call FX_EndScreenRight
1391	call PASSWORD_AskSystemPwd
1392	call BOOTMENU_ResetTimedBoot
1393
1394	;call SOUND_Beep
1395
1396	call BOOTMENU_Execute
1397
1398	;call SOUND_Beep
1399
1400	jc MBR_Main_ReEnterSetup
1401	call BOOTMENU_SetVarsAfterMenu
1402
1403	;call SOUND_Beep
1404
1405	; ---------------------------------------------------- BOOTING
1406	MBR_Main_NoBootMenu:
1407	call FX_StartScreen
1408	call BOOTMENU_BuildGoodBye
1409	call FX_EndScreenRight
1410	call PASSWORD_AskChangeBootPwd
1411
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
1424
1425	; -------------------------------------------- START PARTITION
1426	call PART_StartPartition
1427
1428
1429
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:
1436	Include REGULAR/STD_TEXT.ASM ; Standard (non-translateable text)
1437	size_std_txt = $-b_std_txt
1438
1439	b_driveio:
1440	Include REGULAR/DRIVEIO.ASM ; Drive I/O, Config Load/Save
1441	size_driveio = $-b_driveio
1442
1443	b_videoio:
1444	Include REGULAR/VIDEOIO.ASM ; Video I/O
1445	size_videoio = $-b_videoio
1446
1447	b_timer:
1448	Include REGULAR/TIMER.ASM ; Timer
1449	size_timer = $-b_timer
1450
1451	b_partmain:
1452	Include REGULAR/PARTMAIN.ASM ; Regular Partition Routines
1453	size_partmain = $-b_partmain
1454
1455	b_partscan:
1456	Include REGULAR/PARTSCAN.ASM ; Partition Scanning
1457	size_partscan = $-b_partscan
1458
1459	b_bootmenu:
1460	Include REGULAR/BOOTMENU.ASM ; Boot-Menu
1461	size_bootmenu = $-b_bootmenu
1462
1463	b_password:
1464	Include REGULAR/PASSWORD.ASM ; Password related
1465	size_password = $-b_password
1466
1467	b_other:
1468	Include REGULAR/OTHER.ASM ; Other Routines
1469	size_other = $-b_other
1470
1471	; Rousseau: Special modules moved upwards.
1472	b_main:
1473	Include SETUP/MAIN.ASM ; The whole AiR-BOOT SETUP
1474	size_main = $-b_main
1475
1476
1477	IFDEF TXT_IncludeCyrillic
1478	b_ccharset:
1479	Include SPECIAL/CHARSET.ASM ; Charset Support (e.g. Cyrillic)
1480	size_ccharset = $-b_ccharset
1481	ENDIF
1482
1483	b_math:
1484	Include REGULAR/MATH.ASM ; Math functions (like 32-bit multiply)
1485	size_math = $-b_math
1486
1487
1488
1489	IFDEF AuxDebug
1490	b_debug:
1491	; Include REGULAR/DEBUG.ASM ; Various debugging routines,
1492	; uses AUXIO and CONV
1493	size_debug = $-b_debug
1494	ENDIF
1495
1496	b_auxio:
1497	;Include REGULAR/AUXIO.ASM ; Com-port support for debugging
1498	size_auxio = $-b_auxio
1499
1500	; Rousseau: moved upwards
1501	;IFDEF TXT_IncludeCyrillic
1502	; Include SPECIAL/CHARSET.ASM ; Charset Support (e.g. Cyrillic)
1503	;ENDIF
1504
1505	b_lvm:
1506	Include SPECIAL/LVM.ASM ; LVM-specific code
1507	size_lvm = $-b_lvm
1508
1509
1510	; End of sector 3.
1511	eos3:
1512
1513
1514
1515
1516
1517	;==============================================================================
1518
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
1531
1532	; Start of sector 36.
1533	sos36:
1534
1535
1536
1537	; End of sector 37, yes this section is 2 sectors long.
1538	eos37:
1539
1540
1541
1542
1543
1544
1545
1546
1547	;==============================================================================
1548	; Sector 38-x
1549	;
1550	; This section contains translatable texts.
1551	;
1552	;org 04A00h
1553
1554	; Start of sector 28.
1555	sos38:
1556
1557	b_txtother:
1558	Include TEXT/TXTOTHER.ASM ; All translateable Text-Strings
1559	size_txtother = $-b_txtother
1560
1561	b_txtmenus:
1562	Include TEXT/TXTMENUS.ASM ; All translateable Menu-text
1563	size_txtmenus = $-b_txtmenus
1564
1565	b_charset:
1566	Include TEXT/CHARSET.ASM ; Special Video Charsets (if needed)
1567	size_charset = $-b_charset
1568
1569	b_conv:
1570	Include REGULAR/CONV.ASM ; Various conversion routines
1571	size_conv = $-b_conv
1572
1573	b_virus:
1574	Include SPECIAL/VIRUS.ASM ; Virus Detection / Anti-Virus
1575	size_virus = $-b_virus
1576	; [Linux support removed since v1.02]
1577	;Include SPECIAL/FAT16.ASM ; FAT-16 Support
1578	;Include SPECIAL/LINUX.ASM ; Linux Kernel Support
1579	b_billsuxx:
1580	Include SPECIAL/F00K/BILLSUXX.ASM ; Extended Partition - Microsoft-Hack
1581	size_billsuxx = $-b_billsuxx
1582
1583	b_sound:
1584	Include SPECIAL/SOUND.ASM ; Sound
1585	size_sound = $-b_sound
1586
1587	b_apm:
1588	Include SPECIAL/APM.ASM ; Power Managment Support
1589	size_apm = $-b_apm
1590
1591	b_fx:
1592	Include SPECIAL/FX.ASM ; l33t Cooper-Bars/Scrolling <bg>
1593	size_fx = $-b_fx
1594
1595
1596	;
1597	; Let's make this always the last module in this section.
1598	;
1599	Include BLDDATE.ASM ; Build Date generated by _build.cmd
1600
1601	; End of sector x depending on size of translatable texts.
1602	eosx:
1603
1604
1605
1606	CODE_END:
1607
1608	;org 06A00h - 4
1609	db 'BABE'
1610
1611	;org 06A00h
1612	db 'FACE'
1613
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
1634	;==============================================================================
1635	; Sector 55
1636
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
1647	sos55:
1648
1649
1650
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.
1669
1670	CFG_LastTimeEditLow dw 0 ; Last Time Edited Stamp (will incr every setup)
1671	CFG_LastTimeEditHi dw 0 ; second 16 bit part...
1672
1673	CFG_CheckConfig dw 0 ; Check-Sum for Configuration
1674
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)
1678
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)
1688	; v0.29+ -> 2 - Detailed Bootmenu
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
1732
1733
1734	;
1735	; THERE IS ROOM RESERVED HERE FOR MORE VARIABLES
1736	;
1737
1738	; 6cae
1739	eoc:
1740
1741
1742
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
1750	soiv:
1751
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.
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
1761
1762
1763	; 6d0c
1764	; End of sector 55.
1765	eos55:
1766
1767
1768
1769
1770
1771
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
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.
1804	; If a virus is found, we will restore MBR from Sektor 60/62 and stop the system
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
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
1818
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	;------------------------------------------------------------------------------
1828
1829	eosvs:
1830
1831
1832
1833
1834	;org 06E00h ; Sector 56-57
1835
1836	here = $
1837	org image_size - 0a00h - (image_size - image_size_60secs)
1838	check_overlap here
1839
1840	sos56:
1841
1842
1843
1844	; Rousseau: This is the start of the AiR-BOOT IPT
1845
1846	PartitionTable: ; no-partitions detected... :]
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
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)
1867
1868	db (LocIPT_MaxPartitions * LocIPT_LenOfIPT) dup (0)
1869
1870
1871	; 73fa !!!!!!!!!!!!!!
1872	eos56:
1873
1874
1875
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
1885	soiptsig:
1886	db 'AiRBOOTPAR' ; 1K internal partition table
1887
1888
1889
1890	eoiptsig:
1891
1892
1893
1894	;------------------------------------------------------------------------------
1895	;org 07200h ; Sector 58
1896
1897	here = $
1898	org image_size - 600h - (image_size - image_size_60secs) / 2
1899	check_overlap here
1900	soipt:
1901	sos58:
1902	; 7400h
1903	HidePartitionTable db (LocIPT_MaxPartitions * LocHPT_LenOfHPT) dup (0FFh)
1904	; Format is:
1905	;============
1906	; PartitionPtr : BYTE * 30
1907	; --------------------> 30 Bytes * 45
1908
1909	DriveLetters db LocIPT_MaxPartitions dup (0)
1910	; Format is:
1911	;============
1912	; Drive-Letter : BYTE (80h-C:, 81h-D:)
1913	; --------------------> 1 Byte * 45
1914
1915	;
1916	; There is some room here, but this is the configuration section.
1917	; So not available for code.
1918	;
1919
1920	eos58:
1921	eoipt:
1922
1923
1924
1925
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
1932
1933	sohidsig:
1934	;
1935	db 'AiRBOOTHID' ; 1K internal Hide-partition table
1936
1937
1938	eohidsig:
1939
1940
1941
1942
1943
1944
1945	;------------------------------------------------------------------------------
1946	;org 07600h
1947
1948	here = $
1949	org image_size - 200h ; Sector 60
1950	check_overlap here
1951
1952	sohid:
1953	sos60:
1954
1955	MBR_BackUpMBR db 'AiR-BOOT MBR-BackUp - Just to fill this sector with something',0
1956	AirBootRocks db 'AiR-BOOT Rocks!',0
1957
1958	db 512-($-sohid)-2 dup(0)
1959
1960	eos60:
1961	eohid:
1962
1963
1964
1965
1966	;org 077FEh
1967
1968	here = $
1969	org image_size - 2
1970	check_overlap here
1971	dw 0BABEh
1972
1973	eoab:
1974
1975
1976	IFDEF SEGMENTED
1977	;
1978	; End of AiR-BOOT code and data.
1979	;
1980
1981	IMAGE ENDS
1982
1983	;DATA_SEG ENDS
1984
1985	;
1986	; Uninitialized Data (BSS)
1987	;
1988	VOLATILE SEGMENT USE16 PUBLIC 'BSS'
1989
1990	ENDIF
1991
1992	sobss:
1993	;------------------------------------------------------------------------------
1994	;
1995	; Removed org for BSS data to be more compatible
1996	; with segment-concatenated layout.
1997	;
1998	org 0A000h ; Uninitialized
1999
2000
2001	; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
2002	BeginOfVariables:
2003	PartitionSector db 512 dup (?) ; Temporary Sector for Partition
2004	JfsPBR db 512 dup (?) ; Temporary Sector for JFS PBR writeback
2005	LVMSector db 512 dup (?) ; Temporary Sector for LVM
2006	TmpSector db 512 dup (?) ; Temporary Sector
2007
2008	; Everything used to build a new IPT and reference it to the old one
2009	NewPartTable db 1536 dup (?) ; New Partition Table
2010	NewHidePartTable db partition_count * LocHPT_LenOfHPT dup (?) ; New Hide-Partition Table
2011	NewDriveLetters db partition_count dup (?) ; Logical Drive-Letters
2012
2013	PartitionSizeTable db partition_count * 6 dup (?) ; Size-Table (6 bytes per partition)
2014	PartitionPointers dw 52 dup (?) ; Maximum is 52 entries till now
2015	PartitionPointerCount db ? ; Count of total Partition Pointers
2016	PartitionXref db partition_count dup (?) ; X-Reference Table
2017	PartitionVolumeLetters db partition_count dup (?) ; Volume-Letters
2018	; 0 - no LVM support
2019	; 1 - LVM support, but no letter
2020	; 'C'-'Z' - assigned drive letter
2021
2022	TotalHarddiscs db ? ; Total harddrives (by POST)
2023	LBASwitchTable db 128 dup (?) ; Bit 25-18 for CHS/LBA Switching
2024	NewPartitions db ? ; Freshly found partitions
2025	; Independent of SaveConfiguration
2026
2027	VideoIO_Segment dw ? ; Segment for Video I/O
2028
2029	ExtendedAbsPos dd ? ; Extended Partition Absolute Position
2030	ExtendedAbsPosSet db ? ; If Absolute Position set
2031
2032	CurPartition_Location dw 4 dup (?) ; Where did current partition come from?
2033	CurIO_UseExtension db ? ; 1-Use INT 13h EXTENSIONS
2034	; (filled out by PreCrap)
2035	CurIO_Scanning db ? ; 1-AiR-BOOT is scanning partitions
2036	; (for detailed error message)
2037
2038	; [Linux support removed since v1.02]
2039	;GotLinux db ? ; 1-Linux found
2040
2041	Menu_EntrySelected db ? ; Which partition we boot this time...
2042	Menu_UpperPart db ? ; Which number (Base=0) is the partition upper pos
2043	Menu_AbsoluteX db ? ; Pos where Menu stuff starts
2044	Menu_TotalParts db ? ; Copy of CFG_BootParts
2045	Menu_TotalLines db ? ; Total Lines on Screen used for BootMenu
2046	Menu_EntryDefault db ? ; Default Entry in filtered View
2047	Menu_EntryLast db ? ; LastBooted Entry in filtered View
2048	Menu_EntryAutomatic db ? ; Automatic Entry in filtered View
2049	; - All adjusted to menu locations
2050
2051	PartSetup_UpperPart db ? ; Partition-Setup (like Menu_UpperPart)
2052	PartSetup_ActivePart db ? ; Active Partition
2053	PartSetup_HiddenUpper db ? ; (like Menu_UpperPart)
2054	PartSetup_HiddenX db ? ; Pos for Hidden-Setup
2055	PartSetup_HiddenAdd db ? ; Adjust for Hidden-Setup
2056
2057	TimedBootEnable db ? ; Local Enable/Disable for timed boot
2058	TimedTimeOut dd ? ; TimeOut Timer for TimedBoot (too much time here ;)
2059	TimedSecondLeft db ? ; How many seconds are left till boom ?
2060	TimedSecondBack db ? ; To get a modification noticed
2061	TimedBootUsed db ? ; Timed Boot used for bootup ?
2062	FloppyGetNameTimer dd ? ; Timer for Floppy-Get-Name
2063	SETUP_KeysOnEntry db ? ; which Shift Status was there, when booting ?
2064	SETUP_ExitEvent db ? ; Exit Event to end SETUP
2065	TempPasswordEntry db 17 dup (?)
2066	SETUP_OldPwd db 17 dup (?)
2067	SETUP_NewPwd db 17 dup (?)
2068	SETUP_VerifyPwd db 17 dup (?)
2069	StartSoundPlayed db ?
2070	ChangePartNameSave db ?
2071
2072	FX_UseCount dw ?
2073	FX_OverallTimer dw ?
2074	FX_WideScrollerTimer dw ?
2075	FX_WideScrollerCurPos dw ?
2076	FX_WideScrollerSpeed db ?
2077	FX_WideScrollerSpeedState db ?
2078	FX_WideScrollerDirection db ?
2079	FX_WideScrollerAbsDirection db ?
2080	FX_WideScrollerBounceSpeed db ?
2081	FX_CooperBarsTimer dw ?
2082
2083	; [Linux support removed since v1.02]
2084	;FAT16_Drive db ? ; FAT-16: Drive of FAT16-partition
2085	;FAT16_AbsPartitionBegin dd ? ; FAT-16: LBA Begin of Partition
2086	;FAT16_SecsPerCluster db ? ; FAT-16: Sectors Per Cluster
2087	;FAT16_NumOfRootEntries dw ? ; FAT-16: Number of Root Entries
2088	;FAT16_SecsPerFAT dw ? ; FAT-16: Sectors Per FAT
2089	;FAT16_AbsFATBegin dd ? ; FAT-16: LBA Begin of FAT
2090	;FAT16_AbsRootBegin dd ? ; FAT-16: LBA Begin of Root
2091	;FAT16_AbsClusterBegin dd ? ; FAT-16: LBA Begin of Clusters
2092	;FAT16_FATCacheSector db ? ; FAT-16: FAT-Sector No in Cache
2093	;FAT16_FATCache db 512 dup (?) ; FAT-16: FAT-Area Cache
2094	;
2095	;LINUX_KernelEntries db 680 dup (?) ; 34*20 -> Space for Kernel-Entries
2096	;LINUX_KernelNo db ? ; Total of Kernels in KernelEntries
2097	;LINUX_KernelSizeTable db 120 dup (?) ; Size-Table (6 bytes per kernel)
2098	;EndOfVariables:
2099
2100	; Dynamically Generated Tables - do not need to get initialized with NUL
2101	FX_CooperColors db 672 dup (?) ; 7 cooper bars*96 - runtime calculated
2102	FX_CooperState db 7 dup (?)
2103	FX_SinusPos db 7 dup (?)
2104	FX_CooperPos dw 7 dup (?)
2105	CharsetTempBuffer db 4096 dup (?) ; Uninitialized Charset buffer
2106	LVM_CRCTable dd 256 dup (?) ; LVM-CRC (->SPECiAL\LVM.asm)
2107
2108
2109
2110	;
2111	; Rousseau: added some stuff.
2112	;
2113
2114
2115	;EVEN
2116	HugeDisk db MaxDisks dup(?)
2117	TrueSecs dd MaxDisks dup(?)
2118
2119	; BIOS geometry of the boot-drive
2120	; Note that heads cannot be 256 due to legacy DOS/BIOS bug
2121	; If Int13X is supported those values are used, otherwise the legacy values.
2122	BIOS_Cyls dd MaxDisks dup(?)
2123	BIOS_Heads dd MaxDisks dup(?)
2124	BIOS_Secs dd MaxDisks dup(?)
2125	BIOS_Bytes dw MaxDisks dup(?)
2126	BIOS_TotalSecs dq MaxDisks dup(?)
2127
2128	; LBA geometry of the boot-drive
2129	; Note that these values are taken from the BPB of a partition boot-record
2130	LVM_Cyls dd MaxDisks dup(?)
2131	LVM_Heads dd MaxDisks dup(?)
2132	LVM_Secs dd MaxDisks dup(?)
2133	LVM_Bytes dw MaxDisks dup(?)
2134	LVM_TotalSecs dq MaxDisks dup(?)
2135
2136	; OS/2 geometry of the boot-drive
2137	; Note that these values are taken from the BPB of a partition boot-record
2138	LOG_Cyls dd MaxDisks dup(?)
2139	LOG_Heads dd MaxDisks dup(?)
2140	LOG_Secs dd MaxDisks dup(?)
2141	LOG_Bytes dw MaxDisks dup(?)
2142	LOG_TotalSecs dq MaxDisks dup(?)
2143
2144	; Rousseau: moved here
2145	EndOfVariables:
2146
2147	; Temporary buffer for 48h INT13X bios call
2148	; Word aligned
2149	;even
2150	;align 2
2151
2152	;db 1 dup(?)
2153
2154	i13xbuf dw 1 dup (?) ; Size of the buffer;
2155	; this param must be present.
2156	; Code inserts it.
2157	db 126 dup(?) ; The buffer itself.
2158	i13xbuf_size = $-offset i13xbuf-2 ; Size of buffer
2159	; (excluding the size word at the start).
2160
2161	eobss:
2162
2163	IFDEF SEGMENTED
2164	VOLATILE ENDS
2165	ELSE
2166	IMAGE ENDS
2167	ENDIF
2168	END AIR_BOOT
2169
2170
2171

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