Reset - Motorola MVME2300SC Series Installation And Use Manual

Startup and Operation
2

Reset

2-10
same time. This feature can be helpful in the event that your
setup/operation parameters are corrupted or do not meet a sanity check.
Refer to the ENV command description in Chapter 3 for the ROM
defaults.
Powering up the MVME2300SC initiates a system reset. You can also
initiate a reset by pressing and quickly releasing the
MVME2300SC front panel, or reset the board in software.
For details on resetting the MVME2300SC board through software, refer
to the MVME2300 Series VME Processor Module Programmer's
Reference Guide.
Both "cold" and "warm" reset modes are available. By default, PPCBug is
in "cold" mode. During cold resets, a total system initialization takes place,
as if the MVME2300SC had just been powered up. All static variables
(including disk device and controller parameters) are restored to their
default states. The breakpoint table and offset registers are cleared. The
target registers are invalidated. Input and output character queues are
cleared. Onboard devices (timer, serial ports, etc.) are reset, and the two
serial ports are reconfigured to their default state.
During warm resets, the PPCBug variables and tables are preserved, as
well as the target state registers and breakpoints.
Note that when the MVME2300SC comes up in a cold reset, PPCBug runs
in Board mode. Using the Environment (ENV) or MENU commands can
make PPCBug run in System mode. Refer to Chapter 3 for specifics.
You will need to reset your system if the processor ever halts, or if the
PPCBug environment is ever lost (vector table is destroyed, stack
corrupted, etc.).
RESET
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