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FORM 50.40-OM2
77YORK INTERNATIONAL
JP27 - COM 4 serial communications port. Congures
COM 4 port to be either RS-485 for Multi-Unit
Communications (COM 4A) or RS-232 for
MicroGateway board (COM4B).
Pins 1-2: Enables port 4A. Allows an RS-485
connection to Microboard J11 for MultiUnit
Communications.
Pins 2-3: Enables port 4B. Allows an RS-232
connection to Microboard J2 for MicroGateway
communications.
JP28 - PC-104 Port interrupt assignment. Assigns
selected PC-104 interrupt request to PDRQ7 on
the microprocessor. Interrupt request selections
are silk screened on the Microboard adjacent to
the program jumper. Not used.
JP29 - PC-104 Port interrupt assignment. Assigns
selected PC-104 interrupt request to PDRQ6
on the microprocessor. Interrupt request selec-
tions are silk screened on the Microboard
adjacent to the program jumper. Future modem
application.
JP30 - PC-104 Port DMA assignment. Assigns selected
PC-104 DMA request to PDRQ0 on the micro-
processor. DMA request selections are silk
screened on the Microboard adjacent to the
program jumper. Not used.
JP31 - PC-104 Port DMA assignment. Assigns selected
PC-104 DMA request to PDRQ1 on the micro-
processor. DMA request selections are silk
screened on the Microboard adjacent to the
program jumper. Not used.
JP32 - PC-104 Port DMA acknowledge assignment.
Assigns selected PC-104 DMA acknowledge
to PDACK0 on the microprocessor. DMA
acknowledge selections are silk screened on the
Microboard adjacent to the program jumper.
Not used.
JP33 - PC-104 Port DMA acknowledge assignment.
Assigns selected PC-104 DMA acknowledge
to PDACK1 on the microprocessor. DMA
acknowledge selections are silk screened on the
Microboard adjacent to the program jumper.
Not used.
JP34, JP35, JP36, JP37 - Not Used
JP38 - BIOS EPROM U45 size. Jumper must be
positioned according to size of U45. Jumper is
a 10 Ohm resistor that is soldered to board. It
is not a shunt jumper.
IN: 512K
OUT: 128K or 256K. Should be OUT for
OptiView Remote Control Center applications.
JP39, JP40, JP41, JP42 - Not used.
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