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Status Indicators
There are two LED (light-emitting diode) status indicators located on the
secondary side of the PrPMC750 :
BFL (DS1)
The yellow
signal line is active.
CPU (DS2)
The green
Bus Busy) signal line on the processor bus is active.
DEBUG Serial Port
A three wire Debug serial RS232 port (TXD, RXD, GND) is available on
the 2mm, 20-pin right-angle header (J1), located on the primary side of the
PrPMC750. Refer to Figure 2-1 for pin definitions. An optional J1 to DB9
adapter cable is available from Motorola. Contact your local Motorola
Sales Office for more information or to order.
The
DEBUG
to serve as the firmware console for the factory installed debugger,
PPCBug. The port is configured as follows:
After power-up, the baud rate of the
using the debugger's Port Format (PF) command. Refer to Chapters 5 and
6 for information about PPCBug.
http://www.motorola.com/computer/literature
LED indicates board failure; lights when the BRDFAIL*
BFL
LED indicates CPU activity; lights when the DBB* (Data
CPU
port may be used for connecting a terminal to the PrPMC750
8 bits per character
1 stop bit per character
Parity disabled (no parity)
Baud rate = 9600 baud (default baud rate at power-up)
.
BFL and CPU
port can be reconfigured by
DEBUG
PrPMC750
2
2-3
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