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RS-232 UPGRADE BOARD IO card Settings and Configuration






TANDY/RADIO SHACK

RS-232 UPGRADE BOARD

Card Type

Serial card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial port

Hard Drives supported

None

Floppy drives supported

None

Data Bus

SBus

Card Size

Half-length, full-height card

CONNECTIONS

Function

Label

Function

Label

DB-25 serial port

CN1

Sbus interface

CN2

BASE I/O ADDRESS AND INTERRUPT SELECTION

Address

IRQ

SW1/1

SW1/2

SW1/3

SW1/4

COM1 (3F8h)

4

Off

Off

Off

On

COM2 (2F8h)

3

Off

On

Off

On

COM3 (3E8h)

4

On

Off

Off

On

COM3 (3E8h)

2

On

Off

On

On

COM4 (2F8h)

3

On

On

Off

On

COM4 (2F8h)

5

On

On

On

On








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