Create a VAX CPU with FPGA?

Patrick Finnegan pat at computer-refuge.org
Thu Mar 3 22:27:37 CST 2005


9000 VAX declared on Thursday 03 March 2005 11:08 pm:
> There are many "soft CPUs"  around. I wonder how hard it is to create
> a soft VAX CPU core that can be load into an FPGA. Other than to
> design from scratch, I think it might be easier if we grab the
> VAX-11/780, 750, or 730 schematics, and throw them into an FPGA
> compiler. The 780 was implemented with TTL, the 750 with gate array,
> and 730 with AMD 2901. I think the 730 scheme might be the easiest to
> implement with an FPGA.
>
> So, does anybody have the 730, 750 or 780 schematics? No, I do not
> plan to start the project. I just want to make sure whether it is
> feasible. Thank you.

Err, bitsavers?

http://computer-refuge.org/bitsavers/dec/vax/780/MP*.pdf and /730/MP*.pdf 
at least.

Pat
-- 
Purdue University ITAP/RCS        --- http://www.itap.purdue.edu/rcs/
The Computer Refuge               --- http://computer-refuge.org


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