RIVA128ZX Datasheet, PDF (76/85 Pages) STMicroelectronics – 128-BIT 3D MULTIMEDIA ACCELERATOR

RIVA128ZX
128-BIT 3D MULTIMEDIA ACCELERATOR
Byte offsets 0x2F - 0x2C
0x2F
0x2E
0x2D
0x2C
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Subsystem Vendor ID (0x2F - 0x2C)
Bits
31:16
15:0
Function
SUBSYSTEM_ID is a unique code defined by the vendor to identify this prod-
uct.
SUB_VENDOR_ID bits allocated by the PCI Special Interest Group to
uniquely identify the manufacturer of the sub-system. Based on the strapping
options read from ROM during PCI reset, this field may behave in one of two
ways:
1 These bytes can be read from address locations 0x54 - 0x57 of the ROM
BIOS automatically during reset. This is useful for add-in card implementa-
tions.
2 These bytes may be written from PCI configuration space at locations 0x40
- 0x43.
RWI
R-0
R-0
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