On 10/30/25 18:29, Peter Ekstrom via cctalk wrote:
Martin,
Thank you for the additional insight. The diagnostics is an interesting
thought. I will run that tomorrow in SIMH and see what happens.
Given that I can run things like RSX11M and XXDP in it, on the 11/23 CPU I
would expect it to work fine.
I am fully expecting that I am doing something wrong given that I'm just
beginning to learn Macro11.
It is NOT your Macro11, It has to be an interrupt. Nothing
else could break that loop of instructions. Scan low memory
for a location that has 5266 in it. Some interrupt is
causing the machine to jump to a vector that points to
5266. Glen suggests the line time clock vector. The KW11-L
LTC vector is at 100.(8).
Jon
