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NBI ENHANCED GRAPHICS ADAPTER

ACER, INC.

NBI ENHANCED GRAPHICS ADAPTER

Card Type

Video card

Video Chip Set

Unidentified

Maximum video Memory

Unidentified

Video Type supported

Monochrome, CGA, EGA

Highest Resolution supported

640 x 350

Data Bus

8-bit ISA

   

CONNECTIONS

Function

Label

Function

Label

9-pin video port

CN1

Reserved

CN3

Reserved

CN2

Light pen connector

CN4

DISPLAY TYPE SELECTION

Setting

JP3

JP4

Enhanced color display

Pins 2 & 3 closed

Unidentified

Monochrome or color display

Pins 2 & 3 closed

Unidentified

DISPLAY TYPE CONFIGURATION (1)

EGA

SW/1

SW/2

SW/3

SW/4

Color display 40x25 mode

On

Off

Off

On

Color display 80x25 mode

Off

Off

Off

On

Emulation mode

On

On

On

Off

Hi Res mode

Off

On

On

Off

Note:The above settings apply when the Enhanced Graphic Adapter is the primary adapter and MDA is the secondary adapter.

DISPLAY TYPE CONFIGURATION (2)

EGA

CGA

SW/1

SW/2

SW/3

SW/4

Monochrome

40 x 25 mode

On

Off

On

Off

Monochrome

80 x 25 mode

Off

Off

On

Off

Note:The above settings apply when the Enhanced Graphic Adapter is the primary adapter and CGA is the secondary adapter.

DISPLAY TYPE CONFIGURATION (3)

EGA

SW/1

SW/2

SW/3

SW/4

Color display 40x25 mode

On

On

On

On

Color display 80x25 mode

Off

On

On

On

Emulation mode

On

Off

On

On

Hi Res mode

Off

Off

On

On

Note:The above settings apply when the Enhanced Graphic Adapter is the secondary adapter and MDA is the primary adapter.

DISPLAY TYPE CONFIGURATION (4)

EGA

CGA

SW/1

SW/2

SW/3

SW/4

Monochrome

40 x 25 mode

On

On

Off

On

Monochrome

80 x 25 mode

Off

On

Off

On

Note:The above settings apply when the Enhanced Graphic Adapter is the secondary adapter and CGA is the primary adapter.

MISCELLANEOUS TECHNICAL NOTES

Whenever the Enhanced Graphic Adapter is used in combination with another one of the adapters must be a monochrome display.