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EGA-PC/D SM

UNIDENTIFIED

EGA-PC/D SM

Category

Video

Video Types Supported

CGA, monochrome, EGA

Video Processor

Unidentified

Highest Resolution Supported

800 x 600

Data Bus Type

8-bit ISA

Memory Type

DRAM

Maximum Onboard Memory

Unidentified

CONNECTIONS

Purpose

Location

Purpose

Location

9-pin digital video port

CN1

VESA Feature connector

J1

RCA video connector

CN2

Replaceable oscillator

OSC3

RCA video connector

CN3

   

FACTORY CONFIGURED SETTINGS

Jumper

Setting

SW1/7

Off

SW1/8

Off

MONITOR TYPE

Setting

P1

ECD

Pins 2 & 3 closed

 

RGB or monochrome

Pins 1 & 2 closed

I/O ADDRESS RANGE

ADDRESS RANGE

P3

3xxh

Pins 2 & 3 closed

 

2xxh

Pins 1 & 2 closed

AUTOMODE

Setting

P4

P6

Enabled

Pins 1 & 2 closed

Pins 2 & 3 closed

 

Disabled

Pins 2 & 3 closed

Pins 1 & 2 closed

EXPANSION SLOT SELECTION

Type

P5

Other

Pins 1 & 2 closed

 

IBM PC slot 8

Pins 2 & 3 closed

SINGLE MONITOR CONFIGURATIONS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

ECD high resolution

Off

On

On

Off

 

RGB 40 x 25

On

Off

Off

On

 

RGB 80 x 25

Off

Off

Off

On

 

ECD low resolution

On

On

On

Off

 

Monochrome

Off

Off

On

Off

CARD ATTACHED TO PRIMARY MONITOR CONFIGURATIONS

Primary/Secondary Monitor

SW1/1

SW1/2

SW1/3

SW1/4

ECD high resolution/monochrome

Off

On

On

Off

 

RGB 40 x 25/monochrome

On

Off

Off

On

 

RGB 80 x 25/monochrome

Off

Off

Off

On

 

ECD low resolution/monochrome

On

On

On

Off

 

Monochrome/RGB 80 x 25

Off

Off

On

Off

 

Monochrome/RGB 40 x 25

On

Off

On

Off

CARD ATTACHED TO SECONDARY MONITOR CONFIGURATIONS

Primary/Secondary Monitor

SW1/1

SW1/2

SW1/3

SW1/4

RGB 40 x 25/monochrome

On

On

Off

On

RGB 80 x 25/monochrome

Off

On

Off

On

Monochrome/ECD low resolution

On

Off

On

On

Monochrome/ECD high resolution

Off

Off

On

On

Monochrome/RGB 40 x 25

On

On

On

On

Monochrome/RGB 80 x 25

Off

On

On

On

POWER-ON MODE

Resolution/Monitor type

SW1/5

SW/6

EGA/all

On

On

 

MDA-Hercules/ECD-monochrome

Off

On

 

CGA/ECD-RGB

On

Off

MISCELLANEOUS NOTES

OSC3 must be replaced with a 19.5 MHz oscillator when the card is configured for Hercules mode.

OSC3 must be removed when the VESA feature connector (J1) is used.