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by vkuruthers 3391 days ago
Looks like a good project, a nice change from doing everything in HDL.

Isn't the circuit layout going to get quite large however? How are you going to organize it? E.g. does Logisim have hierarchical views or sub-components?
1 comments
detaro 3391 days ago
Yes, it does have custom components. It gets slow with complex examples like a CPU, but not so much to become useless.
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vkuruthers 3390 days ago
Good plan. Have you thought much about the instruction set yet? Any interesting features from existing commercial 8 bit processors you're going to re-implement?
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redpanda_ua 3390 days ago
I plan to KISS it as much as possible. The goal is to learn the basics. Maybe after that do more cool stuff in some HDL. Maybe even buy a FPGA :)

I am a further into the development of the CPU then I show in the blog, as such I do have ISA already, but it's constantly changing. The control bus though, is final I think.

https://i.imgur.com/1Sh1cSh.png

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