...because we can't all be on the bleeding edge...





WD90C30

UNIDENTIFIED

WD90C30

Category

Video

Video Types Supported

XVGA

Video Processor

Western Digital 90

Highest Resolution Supported

1024 x 768

Data Bus Type

16-bit ISA

Memory Type

DRAM

Maximum Onboard Memory

1MB

CONNECTIONS

Purpose

Location

Purpose

Location

15-pin analog video port

CN1

VGA feature connector

CN2

DISPLAY MEMORY CONFIGURATION

Memory

JP1

1MB

Pins 1 & 2 closed

512KB

Pins 2 & 3 closed

ZERO WAIT STATE CONFIGURATION

Setting

JP2

Enabled

Pins 2 & 3 closed

 

Disabled

Pins 1 & 2 closed

MONITOR VERTICAL RETRACE TIMING CONFIGURATION (800 X 600)

Setting

SW1/1

SW1/2

56Hz

Off

Off

 

60Hz

Off

On

 

72Hz

On

Off

Note: 72Hz requires 1MB of DRAM memory.

MONITOR VERTICAL RETRACE TIMING CONFIGURATION (1024 X 768)

Setting

SW1/3

SW1/4

Interlaced

Off

Off

60Hz non-interlaced

Off

On

70Hz non-interlaced

On

Off

Note: 70Hz requires 1MB of DRAM memory.

VERTICAL SCAN RATE CONFIGURATION

Rate

SW1/5

31.5KHz

Off

 

40KHz

On

VGA MONITOR CONFIGURATION

Setting

SW1/6 (Optional)

Color

Off

 

Monochrome

On

Note: SW1/6 location is unidentified and may be present on other revisions of this board.

DRAM CONFIGURATION

Memory

Bank 0

Bank 1

512KB

(4) 256K x 4

None

1MB

(4) 256K x 4

(4) 256K x 4