Hi all,
I've implemented a DG NOVA in Verilog, at the current state it
implements all basic instructions, the only
thing the main CPU is lacking is interrupt support which I will add when
I have the time.
The main problem with the whole thing is the sheer lack of any OSes
aside from RDOS.
It would be nice if anyone had some smaller/more basic OSes or
bootstrappable standalone diagnostic software for me to test things with.
(RDOS when manually loaded into memory executes until it tries to load
something from disc, which I haven't yet implemented)
The Verilog is synthezisable, aside from the IO debugger, Disassembler
and device 077 which is currently hacked together.
You can find some documentation and download here;
http://janadelsbach.com/nova.html
- Jan