20 Oct
2006
20 Oct
'06
1:59 a.m.
On Thu, 19 Oct 2006, Patrick Finnegan wrote:
If it makes you feel any better, simh gives the same
results. So,
there's something wrong with the program you have, not your machine. :)
Stepping through it, I catch the error:
000250 000773 br loop2
That actually branches back to the instruction *after* loop2. You
should instead have
000250 000771 br loop2
^^^^^^
That should be 000772
That works as expected...
What nobody has mentioned yet is that this memory tester is listed on the
web page "Hints on testing a dead PDP-11". I went through all of this
about six years ago when I was restoring our 11/34. I remember this
fault, and I'm seeing that I had corrected this typo on the printout I did
back then. It seems that the web page has been corrected since then, so
Jay must have used an old printout, too.
Christian