9 Mar
2018
9 Mar
'18
3:41 a.m.
fredag 9 mars 2018 skrev Lars Brinkhoff <lars at nocrew.org>:
Mattis Lind writes:
Yes. That was basically my idea as well. I didn?t get that far. It sort of
ran small pieces of the code but then I thought it would be a good idea to
compare with the real thing. Thus the planned work for taking traces with a
logic analyzer. At that time I didn?t have deep memory on my LA. Now I
have. Right now the VT52 is stored away and I am onto other things. But in
time it will happen.
/Mattis
Lars Brinkhoff wrote:
Thank you!
Time permitting, I'd like to make a VT52 simulator running this
microprogram.
Does anyone have VT52 microprogram ROM image, a
listing, or a copy of
"DECscope System Manual"?
I did dump the microprogram of my VT52. I also
did a very crude first
attempt to disassemble it. Since the VT52 has a mode bit that control
what operation to run it has to be simulated to get it right. You find
everything here: http://www.datormuseum.se/home/dec-vt5x