...because we can't all be on the bleeding edge...





DELL 486DX/XX REV.3 I/O CARD

BOCA RESEARCH, INC.

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