ZX Spectrum +4 Demo v0.0.2

This second (pre)release builds on the first, with very little visible change. However, behind the scenes, the MMU is now enabled, and so are interrupts. There is some basic PCIE initialisation on the Raspberry Pi 400, but device enumeration remains to be written. PCIE enumeration will allow an xHCI driver to be written to enable USB support of the native Raspberry Pi 400 keyboard.

This demo should be compatible with:

• Raspberry Pi 3 Model B (tested)
• Raspberry Pi 4 Model A
• Raspberry Pi 4 Model B
• Raspberry Pi 400 (tested)

To install, either:

1. Extract the debug/release zip file to an MS-DOS formatted SD card and insert that in your Raspberry Pi, or
2. Use the Raspberry Pi Imager
   1. Select "CHOOSE OS"
   2. Select "Use custom"
   3. Select either the debug or release .zip file you wish to run

ZX Spectrum +4 Demo v0.0.1

This initial (pre)release contains character and control code rendering routines, machine initialisation, and rendering of the main menu screen.
The debug release also contains a demo of a splash screen, a memory dump, and Mini UART debug logging.

This demo should be compatible with:

• Raspberry Pi 3 Model B (tested)
• Raspberry Pi 4 Model A
• Raspberry Pi 4 Model B
• Raspberry Pi 400 (tested)

To install, either:

1. Extract the debug/release zip file to an MS-DOS formatted SD card and insert that in your Raspberry Pi, or
2. Use the Raspberry Pi Imager
   1. Select "CHOOSE OS"
   2. Select "Use custom"
   3. Select either the debug or release .zip file you wish to run