A homebrew FPGA CPU with a native Pascal compiler and a simple development environment
| doc | ||
| examples | ||
| lib | ||
| pcomp | ||
| progs | ||
| tests | ||
| tridoracpu | ||
| tridoraemu | ||
| utils | ||
| .gitignore | ||
| LICENSE.md | ||
| README.md | ||
Tridora System
Tridora is a homebrew CPU written in Verilog and a matching software environment, including a Pascal compiler and assembler. Everything was created from the ground up (except soldering stuff). Everything is as simple as possible while still being reasonably useful. Everything is open source, so you can read, understand and modify the whole system, hardware and software.
Overview
- homebrew CPU
- Verilog FPGA SoC
- 32-bit word-oriented stack machine architecture
- running at 83 MHz on an Arty-A7 board with four clocks per instruction
- has its own instruction set architecture, compatible with nothing
- additional IO controllers on FPGA: UART (serial console), SD-Card, VGA
- Pascal compiler written from zero
- CPU and compiler were designed together
- minimal operating system
- editor, compiler, assembler run natively
- so you can develop programs directly on the machine
- small: CPU has ~500 lines of Verilog, compiler ~9000 LoC
- compiler written in Pascal and can compile itself
- cross-compiler/-assembler can be compiled with FPC
- compiler does its own Pascal dialect with some restrictions and some extensions
- emulator available