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Copyright 1991 David Jurgens |
Machine Identification Byte
Model Sub-Model Machine
FF ?? Original IBM PC 4/24/81
?? IBM PC 10/19/81
?? IBM PC 10/27/82
FE ?? IBM XT (Original)
?? IBM portable PC
?? Compaq DeskPro
FD ?? PCjr
FC ?? IBM AT (6 MHz)
01 IBM AT 3x9 (8 MHz)
02 IBM XT 286
04 IBM PS/2 Model 50
05 IBM PS/2 Model 60
0B IBM PS/1
FB 00 IBM 256/640K XT (aka XT/2)
FA 00 IBM PS/2 Model 30
01 IBM PS/2 Model 25
F9 00 IBM PC Convertible
F8 00 IBM PS/2 Model 80 (16 MHz)
01 IBM PS/2 Model 80 (20 MHz)
04 IBM PS/2 Model 70 (20 MHz)
09 IBM PS/2 Model 70 (16 MHz)
B6 ?? Hewlett Packard 110
9A ?? Compaq Plus
86 XT (BIOS 11/82+) & AT (BIOS 1/84+) (see note)
80 PC & PCjr (see note)
2D ?? Compaq PC
- found at memory location F000:FFFE or via INT 15,C0
- model values of 80 & 86 are returned by BIOS versions previous
to the PS/2 but after the BIOS dates marked
- see INT 15,C0
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