STG3005A2STR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STG3005A2STR

128-BIT 3D MULTIMEDIA ACCELERATOR

STMicroelectronics 

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

76/85

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