...because we can't all be on the bleeding edge...





TOP SEGA 800

UNIDENTIFIED

TOP SEGA 800

Category

Video card

Video Type

EGA/Monochrome

Video Processor

Unidentified

Highest Resolution Supported

800 x 600

Data Bus Type

8-bit ISA

Memory Type

DRAM

Maximum Onboard Memory

64KB (Location unknown)

CONNECTIONS

Purpose

Location

Purpose

Location

Feature connector

J1

RCA jack 2

J4

Light pen connector

J2

9-pin analog video port

J5

RCA jack 1

J3

   

I/O PORT ADDRESS CONFIGURATION

Port

JMP1

3xxh

Pins 2 & 3 closed

 

2xxh

Pins 1 & 2 closed

MONITOR TYPE SELECT

Type

JMP2

EGA

Pins 1 & 2 closed

 

Other

Pins 2 & 3 closed

BIOS TYPE SELECT

Type

JMP3

27128

Pins 1 & 2, 4 & 5 closed

27256

Pins 2 & 3, 5 & 6 closed

CARD MODE CONFIGURATION

Mode

SW1/5

SW1/6

EGA

On

On

 

CGA

Off

On

 

Monochrome/Hercules

Off

Off

DISPLAY CONFIGURATION

EGA Adapter

Monochrome Adapter

CGA Adapter

SW1/1

SW1/2

SW1/3

SW1/4

Color 40 x 25

Secondary

N/A

On

Off

Off

On

Color 80 x 25

Secondary

N/A

Off

Off

Off

On

EGA normal color

Secondary

N/A

On

On

On

Off

EGA Hi-resolution

Secondary

N/A

Off

On

On

Off

Monochrome

N/A

Color 40 x 25

On

Off

On

Off

Monochrome

N/A

Color 80 x 25

Off

Off

On

Off

Color 40 x 25

Primary

N/A

On

On

On

On

Color 80 x 25

Primary

N/A

Off

On

On

On

EGA normal color

Primary

N/A

On

Off

On

On

EGA Hi-resolution

Primary

N/A

Off

Off

On

On

Monochrome

N/A

Color 40 x 25

On

On

Off

On

Monochrome

N/A

Color 80 x 25

Off

On

Off

On