HP 7750 User Manual page 69

Note
Caution
You can enable the watch dog timer with above command.
cf rsp
The rsp (reset stack pointer) configuration item allows you to specify a
value to which the stack pointer and stack page register will be set upon
the transition from emulation reset into the emulation monitor.
This item is automatically set up by cf chip command. The cf chip
command set up rsp to the end of internal RAM. When you select a
processor which has no internal RAM, rsp is set to FFF hex.
R> cf rsp=XXXX
where XXXX is a 16 bits address, will set the stack pointer to that
value upon entry to the emulation monitor after an emulation reset.
When the emulator breaks to the background monitor, the monitor
program needs 5 bytes of stack.
For example, to set the stack pointer to 27f hex, type:
R> cf rsp=27f
Now, if you break the emulator to monitor using the b command, the
stack pointer will be modified to the value 27f hex.
Without a stack pointer, the emulator is unable to make the transition to
the run state, step, or perform many other emulation functions.
Configuring the Emulator 4-13