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System Identification Byte
BIOS Model Submodel
Product Date Byte Byte Revision
PC 04/24/81 FF -- --
PC 10/19/81 FF -- --
PC 10/27/82 FF -- --
PC XT 11/8/82 FE -- --
PC XT 1/10/86 FB 00 01
PC XT 5/9/86 FB 00 02
PCjr 6/1/83 FD -- --
AT 1/10/84 FC -- --
AT 6/10/85 FC 00 01
AT 11/15/85 FC 01 00
PS/2 Model 25 6/26/87 FA 01 00
PS/2 Model 30 9/2/86 FA 00 00
PS/2 Model 30 12/12/86 FA 00 01
PS/2 Model 50 2/13/87 FC 04 00
PS/2 Model 60 2/13/87 FC 05 00
PS/2 Model 80 3/30/87 F8 00 00
PS/2 Model 80 10/07/87 F8 01 00
XT-286 4/21/86 FC 02 00
PC Convertible 9/13/85 F9 00 00
The System Identification byte is located at F000:FFFE. The submodel
and revision bytes can be obtained by calling INT 15h, service C0h.
See Also:
INT 15h, C0h
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