INT 15 - EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). SYSTEM ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. - READ FUNCTION CONFIGURATION INFORMATION AX = D801h CH = function number to read CL = slot number (including embedded and virtual) DS:SI -> 320-byte buffer for standard configuration data block Return: CF clear if successful AH = 00h DS:SI buffer filled CF set on error AH = error code (80h-83h,86h,87h) (see #00539) BX destroyed Note: call with AL=81h if using 32-bit CS addressing mode instead of 16-bit this function is also supported by the Compaq SystemPro 486, but it uses more than 1297 bytes of stack. BUG: some implementations appear to destroy the DF direction flag; the Novell DOS 7+ memory managers explicitly clear it afterwards.