paulkoning at comcast.net
Thu May 21 11:48:13 CDT 2020
> On May 21, 2020, at 11:00 AM, Tom Uban <tom at 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).
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