AST RESEARCH, INC.

AST 3G-PLUS II (202161-001)

Category

Video

Video Types Supported

CGA, EGA, Monochrome

Video Processor

Western Digital

Highest Resolution Supported

720 x 348

Data Bus Type

8-bit ISA

Memory Type

DRAM

Maximum Onboard Memory

256KB

CONNECTIONS

Purpose

Location

Purpose

Location

15-pin analog video port

CN1

RCA video port 1

RCA1

32-pin feature connector

J1

RCA video port 2

RCA2

Light pen connector

J2

   

VIDEO MODE CONFIGURATION

Type

Resolution

SW1/1

SW1/2

SW1/3

SW1/4

»

EGA

640 x 350

Off

On

On

Off

 

CGA

320 x 200

On

On

On

Off

 

Monochrome

640 x 350

Off

Off

On

Off

MONITOR AUTODETECT

Setting

SW1/6

»

Disabled

Off

 

Enabled

On

Note: Enabling autodetect disabled switches SW1/1 through SW1/4.

AUTO EMULATION

Setting

SW1/5

»

Disabled

Off

 

Enabled

On

Note: Auto emulation is used for Hercules and CGA emulation modes.

FACTORY CONFIGURED SETTING

Jumper

Setting

E1

Pins 1 & 2 closed

MISCELLANEOUS TECHNICAL NOTE

Note:The AST 3G-Plus II comes equipped with 64KB of memory and is upgradeable to 256KB. The type of memory used and the location of the Banks is unspecified in manufacturer documentation. Upgrade kits are available through AST.