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burntelast Wednesday at 6:59 PM3 repliesview on HN

It would destroy the Z80. It's a 32bit, dual core CPU running at 133MHz. Even single cored it'll thrash a Z80. Heck, I bet you could create a drop-in replacement board for the Z80 using an RP2040.


Replies

PaulHoulelast Wednesday at 7:52 PM

Note it was possible to use a Z80 to function as a display controller, people used to do it back in the day...

https://archive.org/details/Cheap_Video_Cookbook_Don_Lancast...

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ge96last Wednesday at 7:01 PM

Crazy what you can buy nowadays like the Teensy 4.0 with 600MHz base clock

Granted that's $20 not $1

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zahlmanlast Wednesday at 8:19 PM

Yes, I understand that, but I wonder about the multiple (obviously there is more to it than clock speed). I chose the Z80 because of its long-standing reputation.