AST-3G PLUS II

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AST RESEARCH, INC.

AST 3G-PLUS II (202161-001)

Category Video
Video Types Supported EGA, CGA, MDA, HGC
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
9-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.