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Though I'd think they would use a microcontroller with a 6502 CPU which integrates ROM/RAM/GPIO/peripherals into one. Here is a microcontroller with a 6502. ht

by pkaye 5y ago

Though I'd think they would use a microcontroller with a 6502 CPU which integrates ROM/RAM/GPIO/peripherals into one. Here is a microcontroller with a 6502. https://pdf1.alldatasheet.com/datasheet-pdf/view/103795/ETC/ST2202.html https://pdf1.alldatasheet.com/datasheet-pdf/view/103795/ETC/...