HUNTER OPERATION
SECTION
2.9
2.9.3
SYMPTCl4S
"Crashes" are identified by these symptoms:
2.9.3.1
Keyboard Lock-out
HUITTER's keyboard is entirely "soft" to allow user re-definition
of key functions,
including the power key. If HUITTER's internal
program is caused to 'Crash', power control may be lost, HUITTER
will not switch off.
2.9.3.2
Clock wipe-out
Following a mis-execution episode, HUNTER's calendar clock
registers may be corrupted.
2.9.3.3
Program Corruption
The most serious consequence of mis-execution is when the micro
processor runs 'wild', writing data randomly to all parts of
memory and, occasionally, corrupting user programs. This failure
is generally catastrophic, and is unlikely to go undetected. The
most likely consequence is that any attempt to 'RUN' the
corrupted program will result in keyboard lock-out (see above).
Attempts to 'LIST' corrupted programs may also result in lock-
out.
2.9.3.4
I/O Corruption
I/O selections may be affected by mis-executions in a random
fashion. In some cases spurious options may appear in the
parameter selection screens after a 'Crash'. In this event,
hold down one of the cursor control keys until recognisable
options appear.
2.9.4
RECOVERY
2.9.4.1 Program Corruption
VER.V09F
If a mis-execution has occurred, any user program stored in RAM
memory must be viewed with suspicion. The safest solution,
assuming that the use of keyboard is still available, is to type
'NEW', followed by re-loading of the program.
Remember that even 'LIST' may result in keyboard lockout,
although holding the power key down will generally restore
control eventually.
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