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HOSTESS 4/8, HOSTESS 550 4/8

COMTROL CORPORATION

HOSTESS 4/8, HOSTESS 550 4/8

Card Type

Serial

Chipset

16450 (Hostess 4/8) or 16550 (Hostess 550 4/8)

I/O Options

Serial ports (8)

Data Bus

16-bit ISA

Card Size

Full height, half length

CONNECTIONS

Function

Label

Function

Label

Serial ports via 100-pin connector

J1

Header for 4-port daughterboard

J3

Header for 4-port daughterboard

J2

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Card does not have 4-port daughterboard installed

JP1

Pins 2 & 3 closed

 

Card has 4-port daughterboard installed

JP1

Pins 1 & 2 closed

 

Interrupt mask enabled

SW2/1

On

 

Interrupt mask disabled

SW2/1

Off

Factory configured - do not alter

SW2/8

Unidentified

Note:SW2/8 must be off if the daughterboard is installed.

COMTROL MODE ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

 

0000h

On

On

On

On

On

On

On

On

 

0020h

Off

On

On

On

On

On

On

On

 

0040h

On

Off

On

On

On

On

On

On

 

0060h

Off

Off

On

On

On

On

On

On

 

0080h

On

On

Off

On

On

On

On

On

0280h

On

On

Off

On

Off

On

On

On

 

1F60h

Off

Off

On

Off

Off

Off

Off

Off

 

1F80h

On

On

Off

Off

Off

Off

Off

Off

 

1FA0h

Off

On

Off

Off

Off

Off

Off

Off

 

1FC0h

On

Off

Off

Off

Off

Off

Off

Off

 

1FE0h

Off

Off

Off

Off

Off

Off

Off

Off

Note: A total of 512 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/8=4096, SW1/7=2048, SW1/6=1024, SW1/5=512, SW1/4=256, SW1/3=128, SW1/2=64, SW1/1=32. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

SW1/1 must be off if the daughterboard is installed.

INTERRUPT SELECTION

Setting

JP2

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

2

Pins 1 & 2

On

Off

Off

Off

Off

Off

3

Pins 1 & 2

Off

On

Off

Off

Off

Off

4

Pins 1 & 2

Off

Off

On

Off

Off

Off

5

Pins 1 & 2

Off

Off

Off

On

Off

Off

7

Pins 2 & 3

Off

Off

Off

Off

Off

Off

10

Pins 1 & 2

Off

Off

Off

Off

On

Off

11

Pins 1 & 2

Off

Off

Off

Off

Off

On

Note:Pins designated are in the closed position.

IRQ7 is only available on boards that have SW2 marked with INTERRUPT.