9 Mar
2018
9 Mar
'18
4:47 a.m.
Hello,
Does anyone have VT52 microprogram ROM image, a listing, or a copy
of "DECscope System Manual"?
Best regards,
Lars Brinkhoff
9 Mar
9 Mar
5:44 a.m.
2018-03-09 10:47 GMT+01:00 Lars Brinkhoff via cctalk <cctalk at classiccmp.org>
:
Hello,
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
I had a plan to run the VT52 with a logic analyzer attached to recover
traces of what it is doing for a keypress, UART in, scanline etc.
/Mattis
Best regards,
Lars Brinkhoff
6:24 a.m.
Mattis Lind writes:
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
6:41 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
2327
days inactive
2327
days old
3 comments
2 participants
participants (2)
-
lars＠nocrew.org -
mattislind＠gmail.com