fredag 9 mars 2018 skrev Lars Brinkhoff <[email protected]>: > Mattis Lind writes: > > Lars Brinkhoff wrote: > >> 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 > > Thank you! > > Time permitting, I'd like to make a VT52 simulator running this > microprogram. >
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
