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EGA WONDER (VER. 2)

ATI TECHNOLOGIES, INC.

EGA WONDER (VER. 2)

Card Type

Video card

Video Chip Set

Unidentified

Highest Resolution Supported

800 x 600

Maximum Video Memory

256KB

Data Bus

8-bit ISA

Video Types Supported

Monochrome, CGA, EGA

CONNECTIONS

Function

Label

Function

Label

Composite video/Pin 4 Feature Connector

J1

Feature Connector

J4

Pin 5 Feature Connector

J2

Light pen

P1

9-pin digital video port

J3

Composite video output

P2

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Enhanced features, enable

SW1/8

On

 

Enhanced features, disabled

SW1/8

Off

»

Port address 3xx

P6

Pins 2 & 3 closed

 

Port address 2xx

P6

Pins 1 & 2 closed

»

Video Clock- on board oscillator

P7

Pins 1 & 2 closed

 

Feature Connector ‘EXTOSC’ signal

P7

Pins 2 & 3 closed

»

Sync selection- horizontal

P8

Pins 1 & 2 closed

 

Sync selection- composite

P8

Pins 2 & 3 closed

»

J1 connected to composite sync

P9

Pins 2 & 3 closed

 

J1 connected with J4 pin4

P9

Pins 1 & 2 closed

DISPLAY CONFIGURATION

Type

SW1/1

SW1/2

SW1/3

SW1/4

 

MDA

Off

Off

On

Off

 

CGA (40x25)

On

Off

Off

On

 

CGA (80x25)

Off

Off

Off

On

»

EGA (normal)

On

On

On

Off

 

EGA (enhanced)

Off

On

On

Off

MONITOR SELECTION

Type

SW1/5

SW1/6

SW1/7

Multisync

On

Off

On

Enhanced graphics

On

Off

Off

RGB Color

On

On

Off

Monochrome

Off

On

Off

25KHz (color 1)

Off

Off

On

Composite

On

On

Off

Not used

Off

Off

Off

DISPLAY MODE SELECTION (EGA WONDER PRIMARY)

Primary

Secondary

Monitor

SW1/1

SW1/2

SW1/3

SW1/4

MDA

CGA, 80x25

MD

Off

Off

On

Off

EGA, 80x25

MDA

ECD

Off

On

On

Off

CGA, 80x25

MDA

CD

On

On

On

Off

CGA, 80x25

MDA

CD

Off

Off

Off

On

CGA, 40x25

MDA

CD

On

Off

Off

On

DISPLAY MODE SELECTION (EGA WONDER SECONDARY)

Primary

Secondary

Monitor

SW1/1

SW1/2

SW1/3

SW1/4

CGA, 80x25

MDA

MD

Off

On

Off

On

CGA, 40x25

MDA

MD

On

On

Off

On

MDA

EGA, 80x25

ECD

Off

Off

On

On

MDA

CGA, 80x25

CD

On

Off

On

On

MDA

CGA, 80x25

CD

Off

On

On

On

MDA

CGA, 40x25

CD

On

On

On

On

MISCELLANEOUS TECHNICAL NOTES

Note: DRAM bank identified for location only. Chip size is unidentified.