HD6475368CP Datasheet, PDF (66/108 Pages) Agilent(Hewlett-Packard) – H8/536 Emulator PC Interface

Enable Software
Breakpoints?
When you define or enable a software breakpoint to a specified
address, the emulator will replace the opcode with one of H8/536
undefined opcode (1B hex) as breakpoint interrupt instruction. When
the emulator detects the breakpoint interrupt instruction (1B hex), user
program breaks to the monitor, and the original opcode will be
replaced at the software breakpoint address. A subsequent run or step
command will execute from this address.
Refer to the "Getting Started" for information on using software
breakpoints.
No
The software breakpoints feature is disabled. This
is specified by the default emulator configuration,
so you must change this configuration item before
you can use software breakpoints.
Yes
The software breakpoints feature is enabled. The
emulator detects the breakpoint interrupt instruction
(1B hex), it generates a break to background
request which as with the "processor break"
command. Since the system controller knows the
locations of defined software breakpoints, it can
determine whether the breakpoint interrupt
instruction (1B hex) is a software breakpoint or
opcode in your target program.
When you define (add) a breakpoint, software breakpoints are
automatically enabled.
4-6 Configuring the Emulator