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POWERGRAPH VGA (VER. 2)

STB SYSTEMS, INC.

POWERGRAPH VGA (VER. 2)

Card Type

Video

Video Chip Set

Unidentified

Highest Resolution Supported

1024 x 768

Maximum Onboard Memory

1MB DRAM

Data Bus

16-bit ISA

Video Types Supported

XVGA

CONNECTIONS

Function

Label

Function

Label

15-pin analog video port

J5

DAC chip socket

U2

DAC chip

U1

 

 

Note: Either U1 or U2 should be installed, but not both.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Two wait state operation

J1

Pins 2 & 3 closed

 

Zero wait state operation

J1

Pins 1 & 2 closed

Card does not use IRQ2/9

J2

Pins 2 & 3 closed

 

Card uses IR/FONT

J2

Pins 1 & 2 closed

Factory configured - do not alter

J3

Pins 1 & 2 closed

BIOS uses 8-bit I/O

J5

Pins 1 & 2 closed

 

BIOS uses 16-bit I/O

J5

Pins 2 & 3 closed

DRAM

Note: This card may take 256KB, 512KB, or 1MB of on-board DRAM. The locations of the banks and the configurations of the chips in these banks is unidentified.

VERTICAL SCAN RATE

Resolution

Scan Rate

J4

640 x 480

60Hz

Pins 1 & 2 closed

800 x 600

56Hz

Pins 1 & 2 closed

1024 x 768

43Hz (interlaced)

Pins 1 & 2 closed

640 x 480

72Hz

Pins 2 & 3 closed

800 x 600

72Hz

Pins 2 & 3 closed

1024 x 768

60Hz

Pins 2 & 3 closed