5 May
2025
5 May
'25
6:55 p.m.
Not if you write in VHDL / Verilog, the instantiated
lumps (eg memory) will be different but no more than the API between M$ and Borland C.
I refuse to those poorly designed languages, for the the reason I can't
figure out what is compiled, or where it is defined.
I have used ADHL and WINCUPL, both easy to figure out. They also came
free, like schematic capture rather than 10K year license for the name
brand stuff. Even PAL's could be designed by hand.
You can't even get a get a netlist with modern software. Why no one ever
used the one of the many RTL langues I will will never know.
And if your interest is in vintage architecture rather
than vintage hardware, 5V logic has little relevance.
Both,but 5 volt IO is still important since I like to use classic chips
like the 6850 or TIL311's or have slow BUS.
Ben >> " Can we still get the chips?"
The narrow answer is given the source VHDL/Verilog you don't need legacy silicon.
Taking DG Conway's PDP/4 as an example the XC4010 is probably no more obtanium than a
DS8641, and the Spartan family is only now going out of production.
More the case, only high tech PCB designs are permitted now days- 4+
layer, surface mount,BGA packages. I still am the kitchen table guy for
hardware. The only reason I can do any kind of hobby stuff is because of
the low cost chinese PCB's, and Kicad has PLCC socket footprints.
Ben.
"It is more fun to talk with someone who doesn't use long, difficult
words but rather short, easy words like, 'What about lunch?'"
—Winnie the Pooh