HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

        INT 15,C0 - Return System Configuration Parameters (PS/2 only)

       AH = C0

       on return:
       CF = 0 if successful
          = 1 if error
       AH = when CF set, 80h for PC & PCjr, 86h for XT
            (BIOS after 11/8/82) and AT (BIOS after 1/10/84)

       ES:BX = pointer to system descriptor table in ROM of the format:

       Offset Size          Description

         00   word   length of descriptor (8 minimum)
         02   byte   model byte (same as F000:FFFE, not reliable)
         03   byte   secondary model byte
         04   byte   BIOS revision level (zero based)
         05   byte   feature information, see below
         06   dword  reserved


       Feature Information

       │7│6│5│4│3│2│1│0│  Feature Byte
        │ │ │ │ │ │ │ └──── reserved
        │ │ │ │ │ │ └───── 0=PC bus, 1=Micro Channel
        │ │ │ │ │ └────── Extended BIOS Data Area (EBDA)allocated
        │ │ │ │ └─────── wait for external event supported
        │ │ │ └──────── INT 15,4F used (kbd intercept)
        │ │ └───────── RTC present
        │ └────────── 2nd 8259 present
        └─────────── DMA channel 3 used by fixed disk BIOS

       - see   MACHINE ID

Esc or Alt-X to exit int 15,c0 Home/PgUp/PgDn/End ←↑↓→