I coded a Pascal compiler for transputer as a teen in 1993

LOCS: Language developed at age 9 in Z80 machine code (1988)

Intel 8080 emulator. 19th IOCCC. Best of Show

Viboritas: Reverse engineering of my 1990 game (I was 11 years old)

My first Z80 assembly language program

Video Chess disassembled and commented

My first Z80 assembly language program

Akalabeth or Ultima 0: experiences porting from AppleSoft BASIC to GW-Basic

Toledo Atomchess: Chess in 481 Bytes

Toledo Atomchess: A chess program in 481 bytes of x86 machine code