John A. Campbell
Person · UK
Also worked as Campbell Systems
Later became Campbell Systems
Credits
- 1982Gulpman · ZX-Spectrum 16K
- 1982Masterfile · ZX-Spectrum 48K
- 1983Breakaway · ZX-Spectrum 16K
- 1983Masterfile-16 · ZX-Spectrum 16K
- 1983Gulpman with Campbell Systems · Timex Tx2068
- 1987Masterfile +3 · ZX-Spectrum 128 +3
Same person at Spectrum Computing