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2024-12-28 19:52:56 UTC
in reply to

jhamby on Nostr: In theory you need to run the '816 at 5V to use 20 MHz, while 3.3V is supported up to ...

In theory you need to run the '816 at 5V to use 20 MHz, while 3.3V is supported up to 14 MHz, and you get the greatest power savings running at the lowest speeds and voltages. For my purposes, if I can do everything at 3.3V and avoid the use of power regulators and level translators between the 65C816 and the RP2350 GPIO lines, I will be happy.

Why not just emulate the 65C816 on the RP2350? That would take some fun out of it, and this way I know I can provide a working 6502/816 bus externally.