Low Level Computer Emulator

This is an emulator that allows for each component to be individually configured. The following components are each emulated and configurable.

• Busses
• Mappers (TODO)
  • Bank switching (TODO)
  • Address re-mapping (TODO)
  • Address mirroring
• Clocks
• Flags/Interrupts
• ROM
• Cartridges (TODO)
• RAM (TODO)
• Processors
  • NMOS 6502 (In Progress)
  • NMOS 6510/8500 (TODO)
  • Zilog Z80 (TODO)
  • Motorola 68000 (TODO)
• Graphics (TODO)
  • NES PPU (TODO)
  • SEGA 315-5316 VDP / YM7101
• Audio Processing (TODO)
• Other IO
  • Joysticks
  • Keyboards
  • GPIO

Aims of the project

The aim of this project is to learn about computer architecture along the way. The plan is to be able to construct a variety of different computers by way of config files, such as NES, C64, Apple II The main example following is that of developing a Ninenteno NES system in software following various guides.

I have started with the NMOS 6502 CPU due to its very simple instruction set, so it seemed like a good place to get started.

Resources

NMOS 6502

• Emulator 101 6502
• http://www.obelisk.me.uk/ 6502
• https://www.masswerk.at/6502/6502_instruction_set.html
• Youtube One Lone Coder