HOSTESS S IO card Settings and Configuration

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.