Advanced Spectrum machine language
by David Webb · first published 1984
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When I was in my teens I bough a book called "Advanced Spectrum Machine Language" by David Webb (IIRC) and it had examples of a rainbow processor (high-res colour by repeatedly writing to the attributes file quickly) and a full-screen horizon (by flipping the border colour bit at…
on “Nirvana Engine for ZX Spectrum (2013)” ↗…how actually-useful this particular reference card is: huge hex conversion table, but no instruction timing chart? Anyway... pure nostalgia caused me to go through an old Z80 assembly book just now ("Advanced Spectrum Machine Language"), and I found some code I wrote a good 35 years or so ago: https://ibb.co/fvqtwkQ This was printed on thermal paper (not sure about the printer model: I don't think it was the original ZX Printer, as…
on “Z80 CPU Microprocessor Instant Reference Card (1981) [pdf]” ↗From his bio: Mr Webb graduated in mathematics from Exeter College, Oxford University in 1986 and prior to that was a computer geek, authoring "Supercharge Your Spectrum" (1983) and "Advanced Spectrum Machine Language" (1984), both books on the subject of machine language programming for the Z-80 based Sinclair Spectrum computer. He also wrote a number of best-selling games for the Sinclair Spectrum, Amstrad CPC and…
on “A gracious end to Webb-site” ↗