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IT-VGACL VER. 1.0

INFORMTECH INTERNATIONAL, INC.

IT-VGACL VER. 1.0

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

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.