Ian Logan

Spectrum micro drive book

1983

The complete Spectrum ROM disassembly

1983

Sinclair ZX81 ROM Disassembly Part B: OF55H-IDFFH

1982

Understanding your Spectrum

1982

Sinclair ZX81 ROM Disassembly

Sinclair ZX81 ROM Disassembly Part A: 0000H-0F54H

1981