[codeulike]

ah yes you are right, the in-line ELSE

Obligatory shout out for 'Micro Men', about the making of the BBC Micro and ZX Spectrum https://www.youtube.com/watch?v=XXBxV6-zamM

[ksangeelee]

For more geeky insights into the time, I can recommend the book The ZX Spectrum ULA http://www.zxdesign.info/book/ The business side of things is incidental to the rich details of the hardware design and production.