UNIDENTIFIED

RS232C

Card Type

Multi 1/0 card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (2)

Hard Drives supported

None

Floppy drives supported

None

Data Bus

8-bit ISA

Card Size

Half-height card

CONNECTIONS

Function

Label

Function

Label

Serial port 1

CN1

Serial port 2

J2

SERIAL PORT 1 ADDRESS SELECTION

Setting

SW1/1

SW1/3

Port disabled

Off

Off

3E8-2EF

Off

On

3F8-3FF

On

Off

SERIAL PORT 2 ADDRESS SELECTION

Setting

SW1/2

SW1/4

Port disabled

Off

Off

2E8-2EF

Off

On

2F8-2FF

On

Off

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

SW1/5

SW1/6

Interrupt disabled

Off

Off

IRQ3

Off

On

IRQ4

On

Off

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

SW1/7

SW1/8

Interrupt disabled

Off

Off

IRQ3

Off

On

IRQ4

On

Off

MISCELLANEOUS TECHNICAL NOTES

A second serial port may be added by inserting an UM8250 into U2, a MC1489 into U3, a MC1488 into U4, and connecting an external adapter to J2