F000:FFFEh               System Model ID

Length: 1 byte

This byte specifies the machine type.

                                                                          

Use INT 15h, Service C0h, for a more accurate test of the system model
ID and the sub-model ID.

               ID                  Machine Type
FFh                 Original PC
FEh                 Later PC, XT, or Portable PC
FBh                 Later XT
FDh                 PCjr
FCh                 AT or XT-286
F9h                 PC Convertible

Note that a few machines share IDs. To differentiate the machines, use
INT 15h, Service C0h, and look at the sub-model ID.

See also: INT 15h, C0h
See also: System ID

F000:FFFEh System Model ID