PDP-11/23 Debugging

[Glen Slick]

On Wed, Nov 19, 2014 at 6:56 AM, Ben Sinclair <bensinc at gmail.com> wrote:
>
> I'm hoping a memory test shows that I have some problems there, which is
> potentially the easiest thing to fix. Someone told me a while back that the
> M8044 memory tends to be fail, so maybe I should look for something else. I
> wouldn't mind having more memory anyway!
>

Have you tried running VMSAC0?

PDP11_DiagnosticHandbook_1988.pdf
Page 1-76
Q-BUS MEMORY VMSAC0
0-4 MEGABYTE MEMORY EXER. (mixed D/L/P)

If you are running XXDP from an emulated TU58 that binary is in this image:
http://ak6dn.dyndns.org/PDP-11/TU58/
http://ak6dn.dyndns.org/PDP-11/TU58/1123_1.dsk
http://ak6dn.dyndns.org/PDP-11/TU58/1123_1.txt