8_bit_hobby

Developing an 8bit computer and peripherals, testers, debuggers, etc.

After some thoughts, I think this project will feature:

• an eZ80 microcontroller based home made computer
  • something similar to this project: https://z20x.computer/
• raspberry pi for debugging the machine
  • implementing the Zilog Debug Interface to be able to connect to the eZ80
  • create tools to load code to the RAM / ROM / flash drive
• porting / implementing some basic OS, hopefully in C

Prerequisites

Beside building the computer and the devboard :)

• install python libraries (I'm using python 3.6 on Raspberry Pi OS)

  • sudo pip install gpiozero - for easily managing GPIO pins

• additional things, if we would use the MCP23S17 I/O extender chip (not yet)

  • 'sudo pip install spidev RPiMCP23S17'
  • you need to load the SPI kernel modules before you can use SPI devices. Use the gpio command: gpio load spi

• to be able to open / edit the PCB plans, install: kicad (https://kicad.org/download/ubuntu/)