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COMTROL CORPORATION

COMTROL CORPORATION

HOSTESS 550 16

Card Type

Multi-user serial controller

Chipset/Controller

Texas Instruments (UART)

I/O Options

Serial ports (16)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

100 Pin interface connector

CN1

Daisy chain connector 2

J2

Daisy chain connector 1

J1

   

Note: Daisy chain connectors are for the use of multiple cards on the same interrupt.

RS-232/RS-422 MODE SELECTION

Port

RS-232

RS-422

JP1-16/A-C

Pins 2 & 3 closed

Pins 1 & 2 closed

SERIAL PORT INTERRUPT SELECTION

IRQ

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

2/9

N/A

On

Off

Off

Off

Off

Off

Off

3

N/A

Off

On

Off

Off

Off

Off

Off

4

N/A

Off

Off

On

Off

Off

Off

Off

5

N/A

Off

Off

Off

On

Off

Off

Off

10

N/A

Off

Off

Off

Off

On

Off

Off

11

N/A

Off

Off

Off

Off

Off

On

Off

12

N/A

Off

Off

Off

Off

Off

Off

On

Note: These interrupts are for AT&T, DOS, INTERACTIVE 386/ix, SCO XENIX, and SCO UNIX operating systems.

MASK INTERRUPT CONFIGURATION

Setting

SW2/1

Enabled

On

Disabled

Off

I/O ADDRESS SELECTION

Address

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

200h

On

On

Off

On

On

On

On

On

280h

Off

On

Off

On

On

On

On

On

500h

On

Off

On

Off

On

On

On

On

580h

Off

Off

On

Off

On

On

On

On

600h

On

On

Off

Off

On

On

On

On

680h

Off

On

Off

Off

On

On

On

On

700h

On

Off

Off

Off

On

On

On

On

Note: These settings are used for SCO XENIX, SCO UNIX, AT&T UNIX, AND INTERACTIVE 386/ix operating systems.

MISCELLANEOUS TECHNICAL NOTE

Serial ports are located on an interface box which connects to Hostess 550 via the 100-pin interface connector.