Int 2F Fn CB13  - Communicating Applications Specification - Get Diagnost  [F]

   AX = CB13h
   DL = 00h

Return: AX = 0040h in progress
      >= 0    passed
      < 0     hardware-dependent failure code (see below)

See Also: AX=CB13h/DL=01h

Intel Connection CoProcessor failure codes:
 bit 3 9600 bps FAX modem module failed
 bit 2 SDLC chip failed
 bit 1 RAM failed
 bit 0 ROM checksum failed

Intel SatisFAXtion failure codes:
 bit 1 2400 bps data modem failed
 bit 0 9600 bps FAX modem failed