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Informtech IT-VGACL Ver 1.0

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Jumper Settings

Category

Video

Video Types Supported

VGA

Video Processor

Cirrus Logic, Inc.

Highest Resolution Supported

1280 x 1024

Data Bus Type

VESA local bus

Memory Type

VRAM

Maximum Onboard Memory

2MB

50520-1.png

CONNECTIONS

Purpose

Location

Purpose

Location

15-pin analog video port

CN1

Terminating resistor

R26

Terminating resistor

R25

   

INTERRUPT REQUEST

IRQ9

JP11

»

Disabled

Open

 

Enabled

Closed

BS16

BS16

JP12

»

Enabled

Closed

 

Disabled

Open

OEL

OEL

JP13

»

Enabled

Closed

 

Disabled

Open

OEH

OEH

JP14

»

Enabled

Closed

 

Disabled

Open

CLOCK SPEED

Setting

JP15

JP16

»

50.11MHz

Open

Open

 

37.58MHz

Closed

Closed

 

42.16MHz

Closed

Open

 

44.74MHz

Open

Closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

»

1MB

(8) 256K x 4 VRAM

NONE

 

2MB

(8) 256K x 4 VRAM

(2) 512K x 8 VRAM

Note:If terminating resistors R25 and R26 are oriented horizontally, then the 512K x 8 VRAM chips are Bank 0.

MISCELLANEOUS TECHNICAL NOTES

Some cards may have a zero-wait state jumper installed. The Pins-Closed configuration enables the zero-wait state.

See Also