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HOSTESS S

COMTROL CORPORATION

HOSTESS S

Card Type

I/O controller

Chipset/Controller

Texas Instruments (UART)

I/O Options

Serial ports (2)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Optional second DB25 connector

CN1

9-pin serial connector

DB9

25-pin serial connector

DB25

 

 

I/O ADDRESS SELECT

Address

SW1/1

SW1/2

SW1/3

200h-207h

On

On

On

280h-287h

On

On

Off

2COh-287h

On

Off

On

300h-307h

On

Off

Off

Reserved

Off

On

On

Reserved

Off

On

Off

Reserved

Off

Off

On

SERIAL PORT INTERRUPT SELECT

IRQ

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

IRQ2

Off

Off

Off

Off

On

IRQ3

Off

Off

Off

On

Off

IRQ5

Off

Off

On

Off

Off

IRQ10

Off

On

Off

Off

Off

IRQ11

On

Off

Off

Off

Off

LINE TO LINE TERMINATION SELECT

Jumper

Setting

Meaning

JP1

Closed

Receive clock for port 1

JP2

Closed

Receive signal for port 1

JP3

Closed

Transmit clock for port 1

JP4

Closed

Receive signal for port 2

Note:The default position for the jumpers is open.