Abort is invoked by pressing and releasing the ABORT switch on the
MVME167 front panel.
Abort should be used to regain control if the program gets caught
in a loop, etc.Whenever abort is invoked when executing a user program
(running target code), a "snapshot" of the processor state is
captured and stored in the target registers. For this reason, abort is
most appropriate when terminating a user program that is being
debugged. Abort should be used to regain control if the program
gets caught in a loop, etc. The target PC, register contents, etc., help
to pinpoint the malfunction.
Abort Sequence
Pressing and releasing the ABORT switch does the following: 1. Generates a local board condition which may interrupt the processor if enabled.
2. Displays the target registers on the screen, reflecting the machine state at the time the ABORT switch was pressed.
3. Removes any breakpoints installed in the user code and keeps the breakpoint table intact.
4. Returns control to the debugger.
Break
A “Break” is generated by pressing and releasing the BREAK key on the console terminal keyboard.
❏ Break does not generate an interrupt.
❏ The only time break is recognized is when characters are sent or received by the console port. Many times it may be desirable to terminate a debugger command prior to its completion; for example, during the display of a large block of memory. Break allows you to terminate the command.
product application
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