HP 64783A, User Manual

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Running a program from the background monitor
Once you are satisfied that the monitor is working and that memory in your target
system can be accessed correctly, you can use the monitor to run your target
program. Proceed as follows:
1 Reset into the monitor.
2 Load a program, if necessary.
3 Initialize the initial stack pointer and initial program counter.
reg isp=<initial ISP>
reg pc=<target program starting address>
If these values are not known, they can be found by taking a trace of the
program running from reset, as was done in the previous sections.
4 Take a trace of the program running, using the following commands:
tg addr=<long aligned target program starting address>
t
The trigger address must be long aligned because the MC68040 always fetches
instructions as long words from long-word boundaries.
5 Run the program with the command:
r
6 Verify correct operation of the program.
Assuming that the program ran without the monitor, the stack is most likely the
cause of any problems you see. The monitor runs the program by creating a stack
in foreground memory at the location indicated by the initial stack pointer. The
monitor then initiates an RTE, which starts the target program running. The
following trace list is an example showing correct operation:
Chapter 18: Connecting the Emulator to a Target System
Installing Emulator Features
641