Category: expansion bus BIOSes
INT 15 - EISA SYSTEM ROM - 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)
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.