Chapter 4 – Programming
4-10
Locating the Universe Chip
This function returns the location (bus number) of the Universe chip providing the PCI
interface to the VMEbus.
ENTRY:
[AH]
BIOS_FUNCTION_ID = B1h
[AL]
BIOS_SUBFUNCTION_ID = 02h
[CX]
Device ID = 0
[DX]
Vendor ID = 10E3h
[SI]
Index = 0
EXIT:
[BH]
Bus Number (0-255)
[BL]
Device Number in upper 5 bits
Function Number is bottom 3 bits
[AH]
Return Code:
00h = Successful
86h = Device not found
83h = Bad Vendor ID
[CF]
Completion Status, set = error, reset = success
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