Off topic but the eZ80 supported up to 50Mhz https://en.wikipedia.org/wiki/Zilog_eZ80 https://en.wikipedia.org/wiki/Zilog_eZ80 Datasheet: https://www.mouser.co

Off topic but the eZ80 supported up to 50Mhz https://en.wikipedia.org/wiki/Zilog_eZ80 https://en.wikipedia.org/wiki/Zilog_eZ80 Datasheet: https://www.mouser.com/datasheet/2/240/ps0066-2584677.pdf https://www.mouser.com/datasheet/2/240/ps0066-2584677.pdf You can buy them still: https://www.mouser.com/Semiconductors/Embedded-Processors-Controllers/Microprocessors-MPU/_/N-6hpeh?Keyword=z80&FS=True https://www.mouser.com/Semiconductors/Embedded-Processors-Co...