16 Feb
2021
16 Feb
'21
5:08 p.m.
On Tue, Feb 16, 2021 at 2:36 AM Fritz Mueller via
cctalk <cctalk at classiccmp.org> wrote:
So you could set up on t4 or t5 of that microinstruction with the KM11...
On Feb 16, 2021, at 11:08 AM, Josh Dersch <derschjo
at gmail.com> wrote:
I can't, though -- all of this stuff works fine when running slowly :)
Oh right -- I keep forgetting that part! So that really does leave you with just the LA
to catch things in the act I guess.
Right now I'm thinking it is most likely the AMX
selecting the wrong input (I'm guessing that BMX is correctly selecting KOMX, to get
the constant "2" for the add operation).
I agree; seems a good place to look next.
Have the 11/70 microcode PROMs been dumped? I had to
recreate the 11/05 PROM from the listings in the engineering drawings...
I am not sure? For the 11/45, I also keyed it in by hand from the engineering drawings,
but since it is only a 32x8 bit ROM this was pretty easy.
--FritzM.