Card Type	I/O controller
Chipset/Controller	Intel 80C188
I/O Options	Serial ports (2)
Maximum DRAM	N/A

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	SCC channel "B" connector	J2
Serial port 2	CN2

I/O ADDRESS SELECT
Address	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7	SW1/8
3F8h	On	Off	Off	Off	Off	Off	Off	Off
3E8h	On	Off	Off	Off	Off	Off	On	Off
2F8h	On	Off	On	Off	Off	Off	Off	Off
2E8h	On	Off	On	Off	Off	Off	On	Off
7F8h	Off	Off	Off	Off	Off	Off	Off	Off
Note:The address range for the MPI-600 can be set between 000h and 7F8h. The switches are a binary representation of the addresses. The switches have the following decimal values: switch 1=4, switch 2=2, switch 3=1, switch 4=8, switch 5=4, switch 6=2, switch 7=1, switch 8=8. Turn Off the switches and add the values of the Off switches to obtain the correct address.

DMA CHANNEL SELECT
DMA	J3	J4
1	Pins 1 & 3 closed	Pins 1 & 3 closed
3	Pins 2 & 4 closed	Pins 2 & 4 closed
None	All open	All open

PARALLEL PORT CONFIGURATION
J1	Designation
Pins 1 - 4	Connected to ground
Pin 5	Connected to 8256 pin P27
Pin 6	Connected to 8256 Pin P26
Pin 7	Connected to 8256 Pin P25
Pin 8	Connected to 8256 Pin P24

INTERRUPT SELECT
IRQ	J5
IRQ2	Pins 1 & 7 closed
IRQ3	Pins 2 & 8 closed
IRQ4	Pins 3 & 9 closed
IRQ5	Pins 4 & 10 closed
IRQ6	Pins 5 & 11 closed
IRQ7	Pins 6 & 12 closed

CURRENT LOOP POWER LEVEL SELECT
Setting	J6	J7
+12 volts	Open	Closed
-12 volts	Closed	Open
External power source used	Open	Open

SIGNAL CONFIGURATION
Signal Type	Mode	J8	J9	J10	J11
RTxC/RRxC	V.35 (RS-422)	1 & 3 closed	1 & 3 closed	N/A	N/A
RTxC/RRxC	V.24 (RS-232)	2 & 4 closed	2 & 4 closed	N/A	N/A
RTxC/RRxC	Receive no clock	All open	All open	N/A	N/A
RxD	V.35 (RS-422)	N/A	N/A	1 & 4 closed	N/A
RxD	V.24 (RS-232)	N/A	N/A	2 & 5 closed	N/A
RxD	Current Loop	N/A	N/A	3 & 6 closed	N/A
TTxC	TRxCA	Open	N/A	N/A	1 & 3 closed
TTxC	RTxCA	N/A	Open	N/A	2 & 4 closed
TTxC	Send no clock	N/A	N/A	N/A	All open

INTERFACE CONFIGURATION
Setting	J12
RS-232	Pins 1 & 16, 2 & 17, 5 & 20, 6 & 21, 7 & 22, 9 & 24, 10 & 25, 11 & 26, 13 & 28, 14 & 29, 15 & 30 closed
Note:If transmitting a clock, close pins 4 & 19. If receiving a clock, close pins 8 & 23 for RxC mode and close pins 12 & 27 for TxC mode.

INTERFACE CONFIGURATION
Setting	J12
RS-422	Pins 1 & 16, 18 & 33, 5 & 20, 6 & 21, 26 & 41, 29 & 44, 30 & 45 closed
Note:If transmitting a clock, close Pins 17 & 32, 19 & 34. If receiving a clock, close Pins 22 & 37, 23 & 38 for RxC mode and close Pins 24 & 39, 27 & 42 for TxC mode.

INTERFACE CONFIGURATION
Setting	J12
Current Loop	Pins 1 & 16, 2 & 17, 3 & 18, 7 & 22, 9 & 24, 11 & 40, 14 & 43, 14 & 29, 15 & 30 closed
Note:If using positive voltage, close Pins 21 & 36. If using negative voltage, close Pins 20 & 35.