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.

Seealso:


 INT 15h, C0h 
 System ID