L90 & 940 GRAPHICS ACCELERATOR CARD Hard Disk/Floppy Controller Settings and Configuration
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 |
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