> On May 21, 2020, at 11:00 AM, Tom Uban <t...@figureeightbrewing.com> wrote:
>
> On 5/21/20 9:51 AM, Paul Koning via cctalk wrote:
>>
>>> ...
>> I have been working, very slowly, on a project analogous to yours: a gate
>> level model of the CDC 6600 supercomputer.
>> ...
> Paul, your project is super interesting. Is there a website where I can track
> it?
Not a website, but you can see the source files on my Subversion server:
svn://akdesign.dyndns.org/dtcyber/trunk -- the model code and tools are in the
"vhdl" subdirectory. FYA, there's also a "spice" subdirectory, which contains
my attempts at a model of the DD60 display console. It's not accurate enough
yet, unfortunately.
The 6600 model has working peripherals processors and display controller. The
CPU doesn't work yet, I'm still debugging the instruction fetch machinery to
get all the variations of branch timing right. It does start, though (the
"exchange jump" instruction works).
paul
