American Megatrends 28 series, User Manual

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AMI EZ-Flex Base Board User's Guide
33
Step 7 Connect the Cables,
Continued
P006 and P007 Serial Port Connectors
P006 and P007 connect an ISA serial port receptacle to the
EZ-Flex Base Board. The connecting cable is a 10-pin
ribbon that connects the Base Board to a male nine-pin D-
sub connector fastened to the chassis.
Pin Use Pin Use
1 Carrier Detect 6 Data Set Ready
2 Receive Data 7 Request to Send
3 Transmit Data 8 Clear to Send
4 Data Terminal Ready 9 Ring Indicator
5 GND 10 Key (N/C)
Serial Port IRQ Conflicts
When using a network operating system with a system
based on the AMI EZ-Flex, it is possible that the network
may use the same IRQ (IRQ3) that is used for one of the
two onboard serial ports. In this case, you can disable the
IRQ associated with the COM port for the onboard serial
port to resolve the IRQ conflict. Disable the COM port for
the onboard serial port via the ECU.