Emulate an EPROM - How Hard Could it Be?

The Apple IIe uses a custom microcontroller and ROM chip to put ASCII values into the computer’s memory. How hard could it be to replace that dual-chip setup with a microcontroller to emulate another kind of keyboard? Bald Engineer tries using an Arduino Mega 2560, Teensy 4.0, and a Pi Pico to replace a vintage ROM chip. See what works AND what does not! https://bit.ly/39vfTIS

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