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#ZX81 apps.apple.com/gb/app/zx81/...

Remembering the Zilog Z80 as it Turns Fifty Years Old

Remembering the Zilog Z80 as it Turns Fifty Years OldHackaday Articlehackaday.com

Make sure to check out the amazing iOS ZX81 app! Recent updates are faster, better, stronger. apps.apple.com/us/app/zx81/...

To quote @warmtoffee.bsky.social, “An 8K ROM on a par with the 32K ROMs.” #ZX81 apps.apple.com/gb/app/zx81/...

13 years ago - how time flies!

Very sorry to learn that the magnificent David Potter died on Sunday evening. A pioneering mathematical physicist, he founded Psion, created the first hand-held organizer and oversaw Symbian, the standard mobile operating system. He was a wonderful philanthropist and supporter of @opendemocracy.net

#ZX81 With the infinite patience of Claude, the load on the host device has been slashed. Next stop will be adding the latest ROM by @warmtoffee.bsky.social.

On Page 13, John Lettice, founder of The Register magazine, reviews a modem for the ZX Spectrum. This internet malarky will never catch on.

Considering this fits in just over 41KB including game logic, UI and dictionary, it plays a jolly good game.

New blog post - Adapting Lambda 8300 BASIC to run on the Minstrel 4th. blog.tynemouthsoftware.co.uk/2026/06/lamb... Getting it running, loading and saving, making sounds, playing games and even a 10 PRINT maze. Happen to need an excessively long blog post to read? then this is the one for you.

Controversial opinion. I think World of Spectrum should be allowed to die. Yes, it was a wonderful site years ago, and I made many friends there on the forums, but it's been shit ever since Martijn stopped maintaining it, and Spectrum Computing is a more than adequate replacement these days.

Tensordyne makes a big bet on log math to beat Nvidia

Tensordyne makes a big bet on log math to beat NvidiaWho needs compute hungry multiplications when you can just add logarithmswww.theregister.com

New blog post - Reverse Engineering the ROM on the Lambda 8300, a sort of ZX81 clone. blog.tynemouthsoftware.co.uk/2026/06/lamb... It is sort of a ZX81, but with quite a few differences. Full disassembly on github if you are interested. github.com/tynemouthsof...

The Sparrow 48K is a modern drop-in motherboard for the original rubber-keyed Spectrum. It swaps old 74-series chips for a single CPLD, adds composite video, and fixes the overheating 7805 regulator - all inside your original case. sinclair.wiki.zxnet.co.uk/wiki/Sparrow

Intel introduced the 8087 floating-point chip in 1980 to make math faster. The chip does tangents, square roots, and so forth, but fundamentally everything is computed through additions and subtractions, performed by an adder at the heart of the chip. Let's look at the adder's circuitry... 1/N

Sinclair User Jul 1982: ZX81 and Spectrum hardware comparison. Amateur radio feature. ZX81 assembler round-up. Rainbow Computing interview, featuring two people who developed the Spectrum. Game reviews column has disappeared and slightly (1/2)

This is incredible! Can't wait to see them in August. youtube.com/watch?v=UAno...

THE CURE LIVE | Primavera Sound Barcelona 2026 | Full Concert 05/06/2026 HDYouTube video by LOUDERyoutube.com

“So if you have bought several ZX Microdrives, you can FORMAT your spare demonstration cartridges and use them as blank cartridges.” - but i had the 1983 and the 1984 demo cartridges and lost the more capable 1984 cartridge by heeding this device.

So you think you know Sinclair BASIC? Without running this on a real Speccy, what will this program output, and why?

I hope you used smart algorithm like the one described by Toni Baker 😁! github.com/markgbeckett...