22 Sep
2023
22 Sep
'23
2:14 p.m.
On 2023-09-22 12:34 p.m., emanuel stiebler via cctalk wrote:
On 2023-09-22 12:04, Mike Katz via cctalk wrote:
I hate both. You can't shoot yourself in the foot, because you can never
figure where the feet are with all that verbose.
I'm working on the design for an Omnibus
(PDP-8/E) debug board and I
am not very good at circuit design. I know there are programs that
will compile something that looks like C into Verilog/VHDL/Abel/Etc
for use on some kind of large (more than 64 pins) programmable logic
device.
There are still some 84pin chips out there(Altera & Xilinx). Sometimes
they are pulls, or some 5V tolerant xilinx xc95xxxxl
Can any of you recommend a good C like tool for
programmable logic?
Stay away from them :)
At the end, you will spend as much time learning the differences
(as it is not real "C") so invest the time in learning system verilog or
VHDL. VHDL is a little more verbose, system verilog lets you shoot in
your foot much easier. If you just like to "debug" the bus, get an
FPGA & some level shifters,
very easy to do ...
I use ADHL. It is vender specific, but I can figure out the logic.
FPGA's have too many vender specific features,to go from one brand to
the other.
Schematic capture, is the other option.
One gota with FPGA's, flip flops only have asyncronus clears, not
preset.