HP 16600A Series User Manual page 274

Problems with Configuration
If you have problems displaying some registers
❏ If your user interface can read or write "generic" registers, but cannot
access registers that are unique to your target microcontroller, check that
the target microcontroller matches the processor type you have
configured in the emulator. You can use the Configuration window in the
Emulation Control Interface to configure the target processor type.
❏ If the value of the SP and PC are displayed as ???, see "If boot area
accesses fail" on page 274.
If you have problems initializing some registers
Some registers can only be written once after processor reset.
If you set the EMSIM values, then reset and break, the EMSIM values
will be written to the SIM registers. If your initialization code then
attempts to write to one of the "write once after reset" registers, the
writes will fail.
Solutions for CPU32
Chapter 13: Troubleshooting the Emulation Module
Problems with Configuration
273