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CT-8090

TWINHEAD INTERNATIONAL CORP.

CT-8090

Card Type

Video card

Video Processor

Unidentified

Maximum Onboard Memory

256KB DRAM

I/O Options

Feature connector, light pen port

Data Bus

8-bit ISA

Video Types Supported

EGA

Highest Resolution Supported

640 x 350

CONNECTIONS

Function

Label

Function

Label

Unidentified

J1

Feature connector

J4

Unidentified

J2

Light pen port

P2

9-pin EGA port

J3

 

 

MONITOR TYPE (EGA PRIMARY)

Primary

Secondary

P1

SW1/1

SW1/2

SW1/3

SW1/4

CGA, 40 x 25

Monochrome

Pins 2 & 3 closed

On

Off

Off

On

CGA, 80 x 25

Monochrome

Pins 2 & 3 closed

Off

Off

Off

On

EGA, 40 x 25

Monochrome

Pins 1 & 2 closed

On

On

On

Off

EGA, 80 x 25

Monochrome

Pins 1 & 2 closed

Off

On

On

Off

Monochrome

CGA, 40 x 25

Pins 2 & 3 closed

On

Off

On

Off

Monochrome

CGA, 80 x 25

Pins 2 & 3 closed

Off

Off

On

Off

MONITOR TYPE (EGA SECONDARY)

Primary

Secondary

P1

SW1/1

SW1/2

SW1/3

SW1/4

Monochrome

CGA, 40 x 25

Pins 2 & 3 closed

On

On

On

On

Monochrome

CGA, 80 x 25

Pins 2 & 3 closed

Off

On

On

On

Monochrome

EGA, 40 x 25

Pins 1 & 2 closed

On

Off

On

On

Monochrome

EGA, 80 x 25

Pins 1 & 2 closed

Off

Off

On

On

CGA, 40 x 25

Monochrome

Pins 2 & 3 closed

On

On

Off

On

CGA, 80 x 25

Monochrome

Pins 2 & 3 closed

Off

On

Off

On