![Digitiser V1.00 (1985)(Watford Electronics)[a] Rom](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAiIGhlaWdodD0iMjUwIiB2aWV3Qm94PSIwIDAgMjUwIDI1MCI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0iI2NmZDRkYiIvPjwvc3ZnPg==)
Digitiser V1.00 (1985)(Watford Electronics)[a]

Watford Print ROM V0.1E (1983)(Watford Electronics)

Watford Print ROM V0.1C (1983)(Watford Electronics)

Watford Electronics DDFS+ V0.91 (1985)(A.C. Bray)

NLQ Designer V1.3 (1985)(Watford Electronics)

Watford Electronics DFS V1.43 (1985)(A.C. Bray)