> On Oct 30, 2025, at 7:43 PM, Glen Slick via cctalk <[email protected]> 
> wrote:
> 
> On Thu, Oct 30, 2025, 4:38 PM Peter Ekstrom via cctalk <
> [email protected]> wrote:
> 
>> Paul,
>> 
>> Thank you for that. I enabled the history and then loaded and ran my
>> initial test program:
>> 
>>       1                                                 .enabl AMA
>>       2 000000                                    .asect
>>       3              014000                       .=14000
>>       4 014000 012706  002000          start: mov #2000,sp
>>       5 014004 000240               loop: nop
>>       6 014006 000776                        br loop
>>       7 014010 000000                        halt
>>       8                                                 .end
>> 
>> And it ran for quite a few iterations through the loop, and then:
>> 
>> 014004 002000 000000|       000000  NOP
>> 014006 002000 000000|                     BR 14004
>> 014004 002000 000000|       000000  NOP
>> 014006 002000 000000|                     BR 14004
>> 014004 002000 000000|       000000  NOP
>> 014006 002000 000000|                     BR 14004
>> 014004 002000 000000|       000000  NOP
>> 014006 002000 000000|                     BR 14004
>> 005266 001774 000014|                    HALT
>> sim>
>> 
>> - Peter
>> 
> 
> Just a wild guess, could this possibly be an unhandled LTC interrupt issue?

Yes that seems likely.

The problem is the "go" command.  That isn't like "start" on a real machine; it 
just sets the PC and continues.  To get the effect of the "start" switch, do 
"reset" then "go".

        paul

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