Apple2-IO-RPi/README.md

# Apple2-IO-RPi
Apple II expansion card using a Raspberry Pi for I/O

![Image of Board](/Hardware/Apple2IORPi.jpg)

## 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. Initially this is storage via virtual ProDOS compatible drive. Next might be adding virtual serial card support over wifi. Future enhancements could use the RPi for more complex processing as per request from the Apple II. For example, the Apple II could request a web page or application and the RPi could calculate this in Apple II hi-res graphics mode and send the image data back to the II for display purposes.

## Project Status
This is an early stage project. Currently one board has been assembled and tested. It is now possible for the Apple II to boot from and write to a virutal hard drive image stored on the RPi in any slot. The code has no error handling or tests yet and is incomplete.

## Roadmap
1. DONE - Build initial prototype that reads/writes virtual hard drive
2. DONE - Create firmware to make the card a bootable device
3. DONE - Fix board with updated second prototype PCB
4. Add ProDOS clock driver
5. Add RPi terminal access
6. Add web service call support
7. Proxy VNC connection, rendering as Apple II compatible graphics
8. Create new schematic/PCB with faster data transfer

## Setup
1. Have PCBs made from the gerber and drill files in the Hardware folder
2. Solder chips, header and capacitors in place
3. Attach Raspberry Pi Zero W facing outward from the card
4. Install Raspberry Pi OS on microSD card
5. Configure wifi in boot/wpa_supplicant.conf
6. Add empty ssh file boot (for ssh access over wifi)
7. Put microSD card in the RPi
8. Install the expansion card into the Apple II
9. Power on the Apple II
10. Install Go on the RPi over ssh
11. go build Driver.go
12. Copy a ProDOS hard drive image onto the RPi
13. ./Driver HARDDRIVE.hdv

## Similar Project
If you're looking for complete hardware design or prefer having Apple II peripherals control a control a Raspberry Pi rather than simply using the Raspberry Pi to provide storage and network access to the Apple II, have a look at David Schmenk's excellent [Apple2Pi](https://github.com/dschmenk/apple2pi) project.
Initial commit 2020-11-03 02:02:52 +00:00			`# Apple2-IO-RPi`
			`Apple II expansion card using a Raspberry Pi for I/O`
Update initial readme 2020-11-03 02:46:28 +00:00
Update README.md 2020-11-17 00:25:02 +00:00			`![Image of Board](/Hardware/Apple2IORPi.jpg)`

Update schematic/PCB to work with more EPROM types 2020-12-14 03:19:04 +00:00			`## 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. Initially this is storage via virtual ProDOS compatible drive. Next might be adding virtual serial card support over wifi. Future enhancements could use the RPi for more complex processing as per request from the Apple II. For example, the Apple II could request a web page or application and the RPi could calculate this in Apple II hi-res graphics mode and send the image data back to the II for display purposes.

Update initial readme 2020-11-03 02:46:28 +00:00			`## Project Status`
Update schematic/PCB to work with more EPROM types 2020-12-14 03:19:04 +00:00			`This is an early stage project. Currently one board has been assembled and tested. It is now possible for the Apple II to boot from and write to a virutal hard drive image stored on the RPi in any slot. The code has no error handling or tests yet and is incomplete.`
Update initial readme 2020-11-03 02:46:28 +00:00
Update schematic/PCB to work with more EPROM types 2020-12-14 03:19:04 +00:00			`## Roadmap`
			`1. DONE - Build initial prototype that reads/writes virtual hard drive`
			`2. DONE - Create firmware to make the card a bootable device`
			`3. DONE - Fix board with updated second prototype PCB`
			`4. Add ProDOS clock driver`
			`5. Add RPi terminal access`
			`6. Add web service call support`
			`7. Proxy VNC connection, rendering as Apple II compatible graphics`
			`8. Create new schematic/PCB with faster data transfer`
Update initial readme 2020-11-03 02:46:28 +00:00
Add non-functional server code for RPi 2020-12-04 00:28:10 +00:00			`## Setup`
			`1. Have PCBs made from the gerber and drill files in the Hardware folder`
			`2. Solder chips, header and capacitors in place`
			`3. Attach Raspberry Pi Zero W facing outward from the card`
			`4. Install Raspberry Pi OS on microSD card`
			`5. Configure wifi in boot/wpa_supplicant.conf`
			`6. Add empty ssh file boot (for ssh access over wifi)`
			`7. Put microSD card in the RPi`
			`8. Install the expansion card into the Apple II`
			`9. Power on the Apple II`
Update project status and image 2020-12-11 04:13:12 +00:00			`10. Install Go on the RPi over ssh`
			`11. go build Driver.go`
			`12. Copy a ProDOS hard drive image onto the RPi`
			`13. ./Driver HARDDRIVE.hdv`
Add non-functional server code for RPi 2020-12-04 00:28:10 +00:00
Update initial readme 2020-11-03 02:46:28 +00:00			`## Similar Project`
			`If you're looking for complete hardware design or prefer having Apple II peripherals control a control a Raspberry Pi rather than simply using the Raspberry Pi to provide storage and network access to the Apple II, have a look at David Schmenk's excellent [Apple2Pi](https://github.com/dschmenk/apple2pi) project.`
Add non-functional server code for RPi 2020-12-04 00:28:10 +00:00