OCEAN INFORMATION SYSTEMS, INC.

MVGA-89

Card Type Video card
Video Chip Set Unidentified
Maximum Video Memory 256/512KB DRAM
Video Types Supported EGA, CGA, MDA, VGA
Highest Resolution Supported 1024 x 768
Data Bus 16-bit ISA


CONNECTIONS

Function

Label

Function

Label

15-pin analog video port

CN1

Feature connector

CN3

9-pin analog port

CN2

   


USER CONFIGURABLE SETTINGS

Function

Label

Setting

» IRQ9 disabled

J1

Pins 1 & 2 closed

  IRQ9 enabled

J1

Pins 2 & 3 closed

» Autodetect enabled

J2

Pins 2 & 3 closed

  Autodetect disabled

J2

Pins 1 & 2 closed

  40MHz clock enabled

J4

Pins 2 & 3 closed

  48MHz clock enabled

J4

Pins 1 & 2 closed

» Interlaced monitor

SW1/3

On

  Non-interlaced monitor

SW1/3

Off

» Factory configured - do not alter

SW1/4

Unidentified

» Fast address decode enabled

SW1/5

Off

  Slow address decode enabled

SW1/5

On

» 16-bit data path

SW1/6

Off

  8-bit data path

SW1/6

On


DRAM JUMPER CONFIGURATION

Size

J3

256KB

Pins 1 & 2, 3 & 4 closed

512KB

Pins 1 & 3, 2 & 4 closed


MONITOR TYPE SELECTION

Setting

SW1/1

SW1/2

» VGA mode

On

On

EGA mode

Off

On

CGA mode

On

Off

MDA mode

Off

Off