raidtheweb/audr32old

32 bit fully custom CPU architecture with a custom assembler and custom C compiler target. Intended to run an Operating System

Audr32 (Audrey) CPU

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Audr32 or Audrey, is a little 32-bit CPU I've been working on that I wish to make an operating system for sometime in the future. Audr32 supports a few essential features like:

• Proper address mapping (See memory maps in vm/src/ISA.txt)
• Pointers
• Interrupts
• Exceptions
• I/O (Clock, Keyboard, Screen, Disk Drives, and Audio.)

Road Map

• Proper cycle operations
• Interrupts
• Basic memory mapping
• Screen
• Keyboard
• Proper address mapping
• Clock (For interval based interrupts and keeping time)
• Disk image loading
• Disk services interrupts
• Audio
• BIOS Firmware
• Move interrupts to BIOS instead of embedding directly(?)
• Basic game (inspired by my calculator programming)
• Operating System and before that: A bootloader

Building

Building requires SDL2 to be installed.

• Run make to build assembler and vm (emulator).

• Resulting executables will be in directories

  • ./vm/bin/vm
  • ./assembler/bin/assemble

Documentation

Read ISA Documentation/Spec (ISA.md) and Assembler Documentation/Spec (ASM.md) to learn more about my insanity.