Code related to the Motorola 68000 microprocessor.

TRS-80 Model 1, II and III diagnostic boot ROM and memory test

C64/C128 MIDI flash interface

RAM test ROM for IBM PC/XT and Clones

some x86-64 assembly for you

ROM based March-U RAM test for the Apple II

A repository that stores results from converting C code to Assembly. I use this repository to analyze performance with my C code.

Test boot ROM for the Apple II to allow testing of bugged 6502 processors

A Z80 CP/M 2.2 workalike with FAT12/16 file systems

Z80 monitor for my homebrew computer

A hello world bootloader + kernel for a brand new OS.

The 64 bit version of ClassicOS for legacy x86-64

A operating system for the i8088

Schematics and Software for my hombrew computer system deigned arround the Zilog Z80

Ping Pong in Assembly that works without OS

make a bootloader in assembly and boot it on qemu