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 & 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 & 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 |