DELL 486DX/XX REV.3 I/O CARD
| |
Data bus: |
16-bit, ISA |
Size: |
Half-length, full-height card |
Hard drive supported: |
Two IDE (AT) Interface drives |
Floppy drives supported: |
Two 360KB, 720KB, 1.2MB, or 1.44MB drives |
CONNECTIONS | |
Function |
Location |
25-pin parallel port |
CN1 |
10-pin serial port - external |
CN2 |
10-pin serial port - internal |
J3 |
40-pin IDE(AT) interface connector |
J4 |
34-pin control cable connector - floppy drive |
J5 |
4-pin connector - drive active LED |
J6 |
SERIAL PORT 1 (CN2) CONFIGURATION | ||
COM/Address/IRQ |
J7 | |
» |
COM1/3F8h/IRQ4 |
pins 1 & 3, 19 & 21 closed |
COM1/3F8h/IRQ3 |
pins 1 & 3, 21 & 23 closed | |
COM1/3F8h/IRQ5 |
pins 1 & 3, 15 & 17 closed | |
COM1/3F8h/IRQ7 |
pins 1 & 3, 13 & 15 closed | |
COM2/2F8h/IRQ3 |
pins 3 & 5, 21 & 23 closed | |
COM2/2F8h/IRQ4 |
pins 3 & 5, 19 & 21 closed | |
COM2/2F8h/IRQ5 |
pins 3 & 5, 15 & 17 closed | |
COM2/2F8h/IRQ7 |
pins 3 & 5, 13 & 15 closed |
SERIAL PORT INTERRUPT SELECTION | ||
IRQ |
J7 | |
» |
COM1/3F8h/IRQ4 |
pins 1 & 3, 19 & 21 closed |
COM1/3F8h/IRQ3 |
pins 1 & 3, 21 & 23 closed | |
COM1/3F8h/IRQ5 |
pins 1 & 3, 15 & 17 closed | |
COM1/3F8h/IRQ7 |
pins 1 & 3, 13 & 15 closed |
SERIAL PORT 1 (CN2) CONFIGURATION | |
COM/Address/IRQ |
J7 |
COM3/3E8h/IRQ3 |
pins 7 & 9, 21 & 23 closed |
COM3/3E8h/IRQ4 |
pins 7 & 9, 19 & 21 closed |
COM3/3E8h/IRQ5 |
pins 7 & 9, 15 & 17 closed |
COM3/3E8h/IRQ7 |
pins 7 & 9, 13 & 15 closed |
COM4/2E8h/IRQ3 |
pins 9 & 11, 21 & 23 closed |
COM4/2E8h/IRQ4 |
pins 9 & 11, 19 & 21 closed |
COM4/2E8h/IRQ5 |
pins 9 & 11, 15 & 17 closed |
COM4/2E8h/IRQ7 |
pins 9 & 11, 13 & 15 closed |
Disabled |
pins 1, 3, 5, 7, 9 & 11 open |
SERIAL PORT 2 (J3) CONFIGURATION | ||
COM/Address/IRQ |
J7 | |
» |
COM2/2F8h/IRQ3 |
pins 4 & 6, 22 & 24 closed |
COM2/2F8h/IRQ4 |
pins 4 & 6, 20 & 22 closed | |
COM2/2F8h/IRQ5 |
pins 4 & 6, 16 & 18 closed | |
COM2/2F8h/IRQ7 |
pins 4 & 6, 14 & 16 closed | |
COM1/3F8h/IRQ3 |
pins 2 & 4, 22 & 24 closed | |
COM1/3F8h/IRQ4 |
pins 2 & 4, 20 & 22 closed | |
COM1/3F8h/IRQ5 |
pins 2 & 4, 16 & 18 closed | |
COM1/3F8h/IRQ7 |
pins 2 & 4, 14 & 16 closed | |
COM3/3E8h/IRQ3 |
pins 8 & 10, 22 & 24 closed | |
COM3/3E8h/IRQ4 |
pins 8 & 10, 20 & 22 closed | |
COM3/3E8h/IRQ5 |
pins 8 & 10, 16 & 18 closed | |
COM3/3E8h/IRQ7 |
pins 8 & 10, 14 & 16 closed | |
COM4/2E8h/IRQ3 |
pins 10 & 12, 22 & 24 closed | |
COM4/2E8h/IRQ4 |
pins 10 & 12, 20 & 22 closed | |
COM4/2E8h/IRQ5 |
pins 10 & 12, 16 & 18 closed | |
COM4/2E8h/IRQ7 |
pins 10 & 12, 14 & 16 closed | |
Disabled |
pins 2, 4, 6, 8, 10 & 12 open |
PARALLEL PORT (CN1) CONFIGURATION | ||
LPT/Address/IRQ |
J8 | |
» |
LPT1/278h/IRQ7 |
pins 1 & 2, 4 & 5 closed |
LPT1/278h/IRQ5 |
pins 1 & 2, 5 & 6 closed | |
LPT2/378h/IRQ5 |
pins 2 & 3, 5 & 6 closed | |
LPT2/378h/IRQ7 |
pins 2 & 3, 4 & 5 closed | |
Disabled |
all pins open |