Apple2-IO-RPi v7

Purpose

The purpose of this project is to provide I/O for an Apple II series 8 bit computer via a Raspberry Pi Zero W which is powered by the Apple II expansion bus. This includes using the attached RPi Zero W for it's storage, network and processor to provide new functionality for the Apple II.

Features

• Boot message which waits for RPi to be ready
• ProDOS bootable drive from image stored on RPi
• ProDOS clock driver that uses the RPi clock which is network synchronized
• Linux bash shell to the RPi from the Apple II including some VT100 support via -SHELL from ProDOS
• Update Apple II firmware in place from image on RPi (note, this is done per slot)
• Supports two drive images at the same time
• Dynamic ProDOS drive generation from Linux filesystem
• Supports "RPI" command from BASIC to execute Linux commands from the command prompt or inside BASIC programs: 10 PRINT CHR$(4);"RPI ls -al /"

Setup

https://github.com/tjboldt/Apple2-IO-RPi/blob/main/ClassicSetup.md

Seventh Revision Hardware

New hardware revision adds write-protect mode and support for both EPROM and EEPROM