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Several dumps exist but accuracy is not known
Revision 1 BIOS (06/01/83) MIGHT be dumped but needs a redump
Any other BIOS revisions are not dumped
BASIC is not dumped unless the current bios dump includes it
Keyboard Controller does not exist on this model
Keyboard Row/Column decoder (in chicklet-type kb) attempted dump was blank, so it must be protected, and will require decapping
Keyboard Row/Column decoder (in alternate-type kb) is not dumped
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Pretty much the same as PCjr

Revision ? BIOS (03/15/85) is dumped
Any other BIOS revisions are not dumped
Keyboard Row/Column decoder is not dumped
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Revision ? BIOS (09/13/85) is not dumped
Any other BIOS revisions are not dumped
BASIC is not dumped, probably is on same chip as bios as on XT and AT
Keyboard Controller is not dumped
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Revision ? BIOS (06/26/87) is not dumped
Any other BIOS revisions are not dumped
BASIC is not dumped, may be integrated in bios as on XT and AT. Only some PS/2s have BASIC.
Keyboard Controller is not dumped
PS/2 Model 25 or 25L (8086 version)
PS/2 Model 25 or 25/286 (286 version)
Revision 1 BIOS (??/??/??) is not dumped
Revision 2 BIOS (??/??/??) is not dumped
Keyboard Controller is not dumped
PS/2 Model 30

Revision 1 BIOS (09/02/86) is dumped
Revision 2 BIOS (12/12/86) is not dumped
Any other BIOS revisions are not dumped
Keyboard Controller does not exist on this model
PS/2 Model 30 286
Revision ? BIOS (??/??/89) is not dumped, needs dumpat.exe to dump.

Revision ? BIOS (08/25/88) is dumped but could use verification
Any other BIOS revisions are not dumped
Keyboard Controller is not dumped
PS/2 Model 50 (286, 1 waitstate)
Revision 1 BIOS (02/13/87) is not dumped
Revision 2 BIOS (05/09/87) is not dumped
Revision 3 BIOS (??/??/??) is not dumped
Keyboard Controller is not dumped
PS/2 Model 50Z (286, 0 waitstates)
Revision 1 BIOS (01/28/88) is not dumped
Revision 2 BIOS (04/18/88) is not dumped
Revision 3 BIOS (??/??/??) is not dumped
Keyboard Controller is not dumped
PS/2 Model 55
4 BIOS revisions, two from model 55-5551, two from model 55-5571, none are dumped
Keyboard Controller is not dumped
PS/2 Model 55SX
PS/2 Model 55LS
Revision 1 BIOS (02/08/90) is not dumped
Any other BIOS revisions are not dumped
Keyboard Controller is not dumped
PS/2 Model 60
PS/2 Model 70 (0x0D submodel)
Revision 1 BIOS (06/08/88, 386DX 25Mhz) is not dumped

Revision 2 BIOS (02/20/89, 386DX 25MHz) is dumped

Revision 3 BIOS (03/17/89. 386DX 20Mhz) is dumped
Revision 4? BIOS (12/01/89, 486SX? 25MHz) is not dumped
Any other BIOS revisions are not dumped
Keyboard Controller is not dumped and is embedded in an ASIC so will require decapping to dump
PS/2 Model 80
Revision ? BIOS (03/30/87) is not dumped
Revision ? BIOS (10/07/87) is not dumped
Keyboard Controller is not dumped
PS/2 Model L40SX (laptop)
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Revision 1 BIOS (08/16/82) is dumped and in
MESS. This bios consists of two chips: the chip labeled 5000027 is the same as on revision 2, but 5000026 needs a redump. The current 'dump' of 5000026 (made by concatenating a trimmed dump) is probably correct but needs verification.

Revision 2 BIOS (11/08/82) is dumped and in
MESS, it is the same as the PC 5155 and the 3270 PC

Revision 3 BIOS (01/10/86), Model XT-089, is dumped and in
MESS. AKA 'enhanced XT', it has enhanced KB support IN SOFTWARE (yikes), also has 3.5” drive 720k support.

Revision 4 BIOS (05/09/86), Model XT-???, (update of rev3 to fix minor KB issues) is dumped and in
MESS

Type 13 Xebec Hard disk controller is dumped
Keyboard Controller does not exist on this model
Keyboard Row/Column Decoder from Model ?L? AT keyboard is not dumped and is likely protected
Keyboard Row/Column Decoder from Model M (all revs) keyboard is not dumped and is likely protected
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Revision 1 BIOS (01/10/84, AT models 068 and 099, 20MB HDD, 6Mhz, unlocked) is dumped
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Revision 3 BIOS (11/15/85, AT model 319 or 339, 3.5” drive, 30MB HDD, locked to <8.3Mhz or <12Mhz? or maybe just >6Mhz?) is dumped, verified, and in
MESS.

Keyboard Controller is dumped
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3270 Personal Computer Model 5271
3270 AT Model 5281

Revision ? BIOS is dumped (11/15/85, not the same as 5170 AT rev 3 from same date)

Keyboard Controller is dumped (same as PC AT)
5531 Industrial XT
7531/7532 Industrial AT
Revision ? BIOS (6mhz 80286) is not dumped
Revision ? BIOS (8mhz 80286) is not dumped
Keyboard controller is probably the same as the normal AT and if so is already dumped
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In model order:
5100 - Pre-PC unit with discrete cpu, does have roms which need dumping
5110, 5120, 5130 - same as above
5140 - PC Convertible
5150 - PC
5155 - PC Portable
5160 - PC XT
5162 - PC XT-286
5170 - PC AT
5271 - 3270 PC
5281 - 3270 AT
In release order:
5100, 5110, 5120, 5130, 5150, 5160, 5155, 5271, 5170, 5281, 5140, 5162