NLQ Designer V1.3 (1985)(Watford Electronics)
Epson NLQ V1.0 (1984)(Watford Electronics)
Watford Print ROM V0.1E (1983)(Watford Electronics)
Watford Print ROM V0.1C (1983)(Watford Electronics)
Digitiser V1.00 (1985)(Watford Electronics)
Watford Electronics DFS V1.43 (1985)(A.C. Bray)