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G7-A

JUKO LABORATORIES, LTD.

G7-A

Category

Video/Multi I/O

Video Types Supported

CGA/Monochrome

Video Processor

Unidentified

Highest Resolution Supported

640 x 400

Data Bus Type

8-bit ISA

Memory Type

N/A

Maximum Onboard Memory

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

15-pin analog video port

CN1

6-pin light pen connector

CN5

Composite video jack

CN2

16-pin game/MIDI port

CN7

9-pin mouse port

CN3

26-pin parallel port interface

CN8

COMPOSITE DISPLAY CONFIGURATION

Setting

J1

Color

Pins 1 & 2 closed

 

Mono

Pins 2 & 3 closed

MOUSE INTERRUPT SELECTION

IRQ

J2

J6/SW2

J6/SW3

J6/SW4

J6/SW5

2

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

 

3

Pins 3 & 4 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

 

4

Pins 5 & 6 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

 

5

Pins 7 & 8 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

COLOR FREQUENCY CONFIGURATION

Setting

J3

Color display 14.31818MHz clock

Pins 1 & 2 closed

 

Monochrome 16MHz clock

Pins 3 & 4 closed

 

640 x 400 display 23.4 MHz clock

Pins 5 & 6 closed

PARALLEL PORT CONFIGURATION

Setting

J4/SW1

Enabled

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed

GAME PORT CONFIGURATION

Setting

J4/SW2

Enabled

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed

VERTICAL SYNCHRONIZE PULSE CONFIGURATION

Setting

J5/SW1

Positive

Pins 1 & 2 closed

 

Negative

Pins 2 & 3 closed

HORIZONTAL SYNCHRONIZE PULSE CONFIGURATION

Setting

J5/SW2

Positive

Pins 1 & 2 closed

 

Negative

Pins 2 & 3 closed

DISPLAY MODE SELECTION

Mode

J5/SW3

J5/SW4

J5/SW5

Color/graphics display

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

 

Composite color graphics display

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

 

Composite monochrome graphics display

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

 

640 x 400 color graphics display

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

 

Monochrome graphics display

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

 

Disabled all display modes

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

MOUSE PORT CONFIGURATION

Setting

J6/SW1

Enabled

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed