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L90 & 940 GRAPHICS ACCELERATOR CARD

ACER, INC.

L90 & 940 GRAPHICS ACCELERATOR CARD

Data bus:

32-bit VL-bus

Size:

Three-quarter length, full-height card

Hard drive supported:

Two IDE(AT) drives

Floppy drives supported:

Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS

Function

Location

40-pin IDE(AT) connector

CN1

34-pin cable connector - floppy drive

CN2

10-pin serial port 1 internal

CN3

10-pin serial port 2 - internal

CN4

16-pin game port

CN5

26-pin feature connector

CN6

25-pin parallel port - external

CN7

15-pin VGA connector - external

CN8

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Local bus signal LRDY# enabled

J3/pins 2 & 3

closed

 

Local bus signal RDYRTN# enabled

J3/pins 1 & 2

closed

IDE(AT) interface enabled

J7

closed

 

IDE(AT) interface disabled

J7

open

CPU clock is <=33MHz

J11

open

 

CPU clock is >33MHz

J11

closed

Parallel port IRQ 7 select

J14/pins 2 & 3

closed

 

Parallel port IRQ 5 select

J14/pins 1 & 2

closed

Floppy drive interface enabled

J15/pins 1 & 2

closed

 

Floppy drive interface disabled

J15/pins 2 & 3

closed

VGA CONFIGURATION

Mode

J4

J5

Enabled

pins 2 & 3 closed

pins 2 & 3 closed

 

Disabled

pins 1 & 2 closed

pins 1 & 2 closed

SERIAL PORT 1 &AMP; 2 CONFIGURATION

COM 1

COM 2

J12

J13

COM1 (3F8h)

COM2 (2F8h)

pins 2 & 3 closed

pins 1 & 2 closed

COM1 (3F8h)

COM4 (2E8h)

pins 1 & 2 closed

pins 1 & 2 closed

COM2 (2F8h)

COM3 (3E8h)

pins 1 & 2 closed

pins 2 & 3 closed

COM3 (3E8h)

COM4 (2E8h)

pins 2 & 3 closed

pins 2 & 3 closed

SERIAL PORT 1 &AMP; 2 MODE CONFIGURATION

COM 1

COM 2

J18

J19

J21

Enabled

Enabled

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

Enabled

Disabled

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

Disabled

Enabled

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

Disabled

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

N/A

PARALLEL PORT ADDRESS SELECTION

LPT

J16

J17

378h

pins 1 & 2 closed

pins 1 & 2 closed

 

278h

pins 2 & 3 closed

pins 1 & 2 closed

 

2BCh

pins 1 & 2 closed

pins 2 & 3 closed

 

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(2) 256 x 16

none

2MB

(2) 256 x 16

(8) 256 x 4