Reset; Abort - Motorola MVME187 Installation Manual

Debugger General Information

Reset

4

Abort

4-10
Pressing and releasing the MVME187 front panel
initiates a system reset.
Reset must be used if the processor ever halts, or if the 187Bug
environment is ever lost (vector table is destroyed, stack corrupted,
etc.).
COLD and WARM reset modes are available.
By default, 187Bug is in COLD mode.
During COLD reset:
1. A total system initialization takes place, as if the MVME187
had just been powered up.
2. All static variables (including disk device and controller
parameters) are restored to their default states.
3. The breakpoint table and offset registers are cleared.
4. The target registers are invalidated.
5. Input and output character queues are cleared.
6. Onboard devices (timer, serial ports, etc.) are reset, and
7. The first two serial ports are reconfigured to their default
state.
During WARM reset:
1. The 187Bug variables and tables are preserved, as well as the
target state registers and breakpoints.
Abort is invoked by pressing and releasing the
MVME187 front panel.
Abort should be used to regain control if the program gets caught
in a loop, etc.
switch
RESET
switch on the
ABORT