UNIDENTIFIED

PM-550C

Data bus: 16-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Two IDE(AT) Interface drives

Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS

Function

Location

2-pin connector - Drive Active LED

J1

40-pin IDE(AT) Interface connector

CN1

34-pin control cable connector - floppy drive

CN2

9-pin serial port 1 (COM1) - external

CN3

9-pin serial port 2 (COM2) - internal

CN4

25-pin parallel port - external

CN5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Floppy drive enabled

JP2

pins 2 & 3 closed

 

Floppy drive disabled

JP2

pins 1 & 2 closed

Hard drive enabled

JP3

pins 2 & 3 closed

 

Hard drive disabled

JP3

pins 1 & 2 closed

SERIAL PORT 1 CONFIGURATION

Select

JP4/jumper 1

JP4/jumper 3

 

Disabled

open

open

COM1 (3F8-3FFh)

closed

open

 

COM3 (3E8-3EFh)

open

closed

 

COM4 (2E8-2EFh)

closed

closed

SERIAL PORT 2 CONFIGURATION

Select

JP4/jumper 2

JP4/jumper 4

 

Disabled

open

open

COM2 (2F8-2FFh)

closed

open

 

COM4 (2E8-2EFh)

open

closed

 

COM3 (3E8-3EFh)

closed

closed

PARALLEL PORT CONFIGURATION

Select

JP4/jumper 5

JP4/jumper 6

 

Disabled

open

open

LPT1 (278-27Fh)

closed

open

 

LPT2 (378-37Fh)

open

closed

SERIAL PORT 1 INTERRUPT REQUEST

Select

JP5/jumper 1

JP5/jumper 2

JP5/jumper 3

IRQ4

closed

open

open

 

IRQ5

open

closed

open

 

IRQ9

open

open

closed

SERIAL PORT 2 INTERRUPT REQUEST

Select

JP6/jumper 1

JP6/jumper 2

JP6/jumper 3

IRQ3

closed

open

open

 

IRQ9

open

closed

open

 

IRQ5

open

open

closed

PARALLEL PORT INTERRUPT REQUEST

Select

JP7

JP7A

 

Disabled

open

open

 

IRQ5

closed

open

IRQ7

open

closed