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RS-232C ADAPTER IO card Settings and Configuration






UNIDENTIFIED

RS-232C ADAPTER

Card Type

Serial card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (2)

Data Bus

8-bit ISA

CONNECTIONS

Function

Label

Function

Label

Serial port 1

CN1

Serial port 2

CN2

SERIAL PORT 1 ADDRESS SELECTION

Setting

S1/1

S1/3

3E8h

Off

On

3F8h

On

Off

Disabled

Off

Off

SERIAL PORT 2 ADDRESS SELECTION

Setting

S1/2

S1/4

2E8h

Off

On

2F8h

On

Off

Disabled

Off

Off

Technical note: Must install an INS 8250 chip in slot IC4 to enable dual serial port capabilities. Or - 1488 into IC2 and 1489 into to U9.

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

S1/5

S1/6

IRQ3

Off

On

IRQ4

On

Off

Disabled

Off

Off

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

S1/7

S1/8

IRQ3

Off

On

IRQ4

On

Of

Disable

Off

Off








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