#zx81 — Public Fediverse posts

SD81Booster, pra incrementar seu ZX-81.

https://retropolis.com.br/2026/08/10/sd81booster-pra-incrementar-seu-zx-81/

#MundoRetro #CPLD #perifrico #SD81Booster #sinclair #ZX80 #ZX81

SD81Booster, pra incrementar seu ZX-81.

https://retropolis.com.br/2026/08/10/sd81booster-pra-incrementar-seu-zx-81/

#MundoRetro #CPLD #perifrico #SD81Booster #sinclair #ZX80 #ZX81

JUST LOOK AT IT!!!! 😍
#retrocomputing #zx81

JUST LOOK AT IT!!!! 😍
#retrocomputing #zx81

(pictures to follow)
So I've been clearing through my parents attic, digging out old stuff.... and I've found a ZX81 😍, BBC Master 🤓 and I *think* I've got an SC/MPuter too! 😲
Couldn't find the old AtariST, Dragon32 or BBC Model B though. 😟 (I was actually looking for the Beeb)
Not sure whether to resurrect the two TRS80's (model I and II) they looked a bit worse for wear.
#retrocomputing #zx81 #bbcmicro

(pictures to follow)
So I've been clearing through my parents attic, digging out old stuff.... and I've found a ZX81 😍, BBC Master 🤓 and I *think* I've got an SC/MPuter too! 😲
Couldn't find the old AtariST, Dragon32 or BBC Model B though. 😟 (I was actually looking for the Beeb)
Not sure whether to resurrect the two TRS80's (model I and II) they looked a bit worse for wear.
#retrocomputing #zx81 #bbcmicro

Garbage Collector: ZX-81

https://retropolis.com.br/2026/08/03/zx-81-garbage-collector/

#MundoRetro #disassembly #emulador #gabinete #GarbageCollector #GitHub #IndieRetroNews #Javascript #jogo #Mazogs #sinclair #teclado #Xevious #ZX81

Garbage Collector: ZX-81

https://retropolis.com.br/2026/08/03/zx-81-garbage-collector/

#MundoRetro #disassembly #emulador #gabinete #GarbageCollector #GitHub #IndieRetroNews #Javascript #jogo #Mazogs #sinclair #teclado #Xevious #ZX81

😢 Today would have been Sir Clive Sinclair's 86th birthday 🇬🇧

#SirCliveSinclair #ZX80 #ZX81 #ZXSpectrum

😢 Today would have been Sir Clive Sinclair's 86th birthday 🇬🇧

#SirCliveSinclair #ZX80 #ZX81 #ZXSpectrum

I bought recently a #R36S retro console for just 31€ on Aliexpress.

Highly recommended if you love retro stuff. Works with retroark under linux.

It comes with thousands of #GB, #GBC, #GBA, #NES, #SNES, #MSX, #Famicom, #Game Gear, #Mega Drive, #MasterSystem, #Atari2600, #NeoGeo, ... even #Playstation 1 and #PSP roms ready to play!

I added games for #C64, #Amstrad, #BBCMicro, #MSDOS, #AppleII, #Ti 99, ... and of course, #ZX81 and #ZXSpectrum games! 🧐

#retrogaming

I bought recently a #R36S retro console for just 31€ on Aliexpress.

Highly recommended if you love retro stuff. Works with retroark under linux.

It comes with thousands of #GB, #GBC, #GBA, #NES, #SNES, #MSX, #Famicom, #Game Gear, #Mega Drive, #MasterSystem, #Atari2600, #NeoGeo, ... even #Playstation 1 and #PSP roms ready to play!

I added games for #C64, #Amstrad, #BBCMicro, #MSDOS, #AppleII, #Ti 99, ... and of course, #ZX81 and #ZXSpectrum games! 🧐

#retrogaming

Inufuto ataca outra vez, com Swordwork.

https://retropolis.com.br/2026/07/10/inufuto-ataca-outra-vez-com-swordwork/

#MundoRetro #AcornElectron #AmstradCpc #AmstradCPC464 #AppleII #Ascend #Atari8bits #colecovision #Commodore64 #CommodoreVIC20 #Creativision #FM7 #FMR30 #GameTank #Inufuto #Jogos #JR200 #MattelAquarius #MegaDuck #MSX #panasonic #PC6001 #PC6001mkII #PC88 #RafaelLima #SegaSG1000 #SharpMZ #SharpX1 #TI994A #TRS80ColorComputer #TRS80MC10 #VZ200 #ZXSpectrum #ZX81

Inufuto ataca outra vez, com Swordwork.

https://retropolis.com.br/2026/07/10/inufuto-ataca-outra-vez-com-swordwork/

#MundoRetro #AcornElectron #AmstradCpc #AmstradCPC464 #AppleII #Ascend #Atari8bits #colecovision #Commodore64 #CommodoreVIC20 #Creativision #FM7 #FMR30 #GameTank #Inufuto #Jogos #JR200 #MattelAquarius #MegaDuck #MSX #panasonic #PC6001 #PC6001mkII #PC88 #RafaelLima #SegaSG1000 #SharpMZ #SharpX1 #TI994A #TRS80ColorComputer #TRS80MC10 #VZ200 #ZXSpectrum #ZX81

#sinclairuser , july 1983: how Mrs. Sims used a #zx81 to help her in her business

#zxspectrum #retrogaming #sundayreads

#sinclairuser , july 1983: how Mrs. Sims used a #zx81 to help her in her business

#zxspectrum #retrogaming #sundayreads

TIMEX SINCLAIR 1000
#Sinclair #ZX81 #TimexSinclair1000

A little bit more on the Making of Zevious Seven for the #ZX81

https://www.zx81keyboardadventure.com/2026/06/zevious-seven-getting-bit-more-from.html

#homebrew #sinclairzx81 #retro #game #zeviousseven

A little bit more on the Making of Zevious Seven for the #ZX81

https://www.zx81keyboardadventure.com/2026/06/zevious-seven-getting-bit-more-from.html

#homebrew #sinclairzx81 #retro #game #zeviousseven

PDF magazine: REV'n'GE 182 (Italian/English)
The game reviews in REV'n'GE compare the implementations of classics across different platforms of the time.

https://www.amiga-news.de/en/news/AN-2026-06-00117-EN.html

#retrogaming #magazine #AppleII #Amstrad #ZXspectrum #C64 #Amiga #CD32 #ZX81 #MSX

PDF magazine: REV'n'GE 182 (Italian/English)
The game reviews in REV'n'GE compare the implementations of classics across different platforms of the time.

https://www.amiga-news.de/en/news/AN-2026-06-00117-EN.html

#retrogaming #magazine #AppleII #Amstrad #ZXspectrum #C64 #Amiga #CD32 #ZX81 #MSX

I was raised on these streets.
#ZX81 #TS1000 #TIMEX #Sinclair #TIMEXsinclair1000 #Z80

An original ZX Spectrum 48K and ZX81
#Sinclair #ZXSpectrum #ZX81

Let's see whether I can play a game of zevious seven with the joystick. The kempton joystick adapter plugs in to the 64K memory expansion which plugs into the ZX-81. Maxing out on wonkiness.

I don't even know if the adapter works with the ZX-81, it csme with my spectrum.

#RetroComputing #ZX81 #SinclairZX81

Let's see whether I can play a game of zevious seven with the joystick. The kempton joystick adapter plugs in to the 64K memory expansion which plugs into the ZX-81. Maxing out on wonkiness.

I don't even know if the adapter works with the ZX-81, it csme with my spectrum.

#RetroComputing #ZX81 #SinclairZX81

Classic or Enhanced?

There's now a choice in versions: with the update of v1.04 there is an aditional option of User Defined Graphics with Colour. The ZIP file contains both versions.

https://zx81keyboardadventure.itch.io/zevious-seven

#ZX81 #retrogaming #indiedev

Classic or Enhanced?

There's now a choice in versions: with the update of v1.04 there is an aditional option of User Defined Graphics with Colour. The ZIP file contains both versions.

https://zx81keyboardadventure.itch.io/zevious-seven

#ZX81 #retrogaming #indiedev

All new video, revisiting the ZX-81!

Keyboard replacement, 64K RAM expansion (which really is a 56K RAM expansion) and success loading games from fake tape.

#Electronics #RetroComputing #ZX81 #SinclairZX81
RE: video.chasmcity.net/videos/wat…

All new video, revisiting the ZX-81!

Keyboard replacement, 64K RAM expansion (which really is a 56K RAM expansion) and success loading games from fake tape.

#Electronics #RetroComputing #ZX81 #SinclairZX81
RE: video.chasmcity.net/videos/wat…

SR-2606: Sinclair ZX-81 part 2

https://video.chasmcity.net/w/izsBZBnAGQSuFqiY76YsdB

SR-2606: Sinclair ZX-81 part 2

https://video.chasmcity.net/w/izsBZBnAGQSuFqiY76YsdB

The aliens aren't taking the weekend off.

There's still time to take on #Zevious and defend the galaxy on your #ZX81. Blast a new high score, and enjoy some classic arcade action
.
https://zx81keyboardadventure.itch.io/zevious-seven

#IndieRetroNews #RetroGaming #ZX81 #Homebrew #IndieDev

The aliens aren't taking the weekend off.

There's still time to take on #Zevious and defend the galaxy on your #ZX81. Blast a new high score, and enjoy some classic arcade action
.
https://zx81keyboardadventure.itch.io/zevious-seven

#IndieRetroNews #RetroGaming #ZX81 #Homebrew #IndieDev

Some gameplay action, and reviews are in. #ZeviousSeven is the #ZX81 #indyretro game of the year.. Trust me :-) https://youtu.be/1ESqav23R3c?si=HuM29SMcDXQp1Mj9

Some gameplay action, and reviews are in. #ZeviousSeven is the #ZX81 #indyretro game of the year.. Trust me :-) https://youtu.be/1ESqav23R3c?si=HuM29SMcDXQp1Mj9

New #ZX81 #Game #ZeviousSeven is now live, downloadable, and playable! Huge thanks to tynemouthsoftware, @loudscotsbloke and George Becket for providing some valuable feedback and testing.

https://www.zx81keyboardadventure.com/2026/06/zx81-game-zevious-seven.html

New #ZX81 #Game #ZeviousSeven is now live, downloadable, and playable! Huge thanks to tynemouthsoftware, @loudscotsbloke and George Becket for providing some valuable feedback and testing.

https://www.zx81keyboardadventure.com/2026/06/zx81-game-zevious-seven.html

#ZX81 Game development for Orphion Seven (or Zevious or ZXevious): Got the First Level finalised and 4 to 6 to go depending on space. Added some gun overheating, and a few bug fixes. The game seems to play really well after the bug fixes (I can't stop playing at least).

#ZX81 Game development for Orphion Seven (or Zevious or ZXevious): Got the First Level finalised and 4 to 6 to go depending on space. Added some gun overheating, and a few bug fixes. The game seems to play really well after the bug fixes (I can't stop playing at least).

SR-2605: Sinclair ZX-81 part 1

https://video.chasmcity.net/w/6BaPY1TSXuQWCEyfFHEXKD

SR-2605: Sinclair ZX-81 part 1

https://video.chasmcity.net/w/6BaPY1TSXuQWCEyfFHEXKD

Writing Z80 assembly, 4 decades later:-)

https://github.com/ttsiodras/3D-on-a-ZX-Spectrum-48K/

#HackerNews #Z80Assembly #RetroGaming #ZX81 #Spectrum #Programming

Writing Z80 assembly, 4 decades later:-)

https://github.com/ttsiodras/3D-on-a-ZX-Spectrum-48K/

#HackerNews #Z80Assembly #RetroGaming #ZX81 #Spectrum #Programming

Je suis joie, j'ai récupéré mon zx81 et mon zx spectrum le weekend dernier 🥳
Avec une blinde de cassettes (oui) de jeu, des extensions (hard) dont même une que j'avais fabriqué moi 😇

M'en vais devoir trouver comment les remettre en service... 🤩

#zx81 #sinclair #ordinosaure

Work has begun on FREEZE-ZX issue 04.
We are going right back to the very early years of the #ZXSpectrum and chatting with someone who produced #ZX81 games before moving on to the #Speccy.
It’s going to be another corker of an issue!
More details soon.
https://freeze64.com/freeze-zx/

I have "ported" the SDL-based ZX81 emulator sz81 to macOS https://git.sr.ht/~drj/sz81

This is a fork of the Sourceforge version; downloads from which give every impression of being a wretched hive of scum and villainy.

In what i suspect has been an increasing trend over the last 40 years, the ancient code did something, a strcpy onto itself, which was Undefined Behaviour in 1990, actually harmless for most of the time it has been compiled; then, when the boffins at Apple decide to detect and trap the instances of UB that they can in the C runtime, it actually crashes on modern C stacks.

#ZX81

@neil
16k, with blu-tak to stop it wobbling off and losing everything

#zx81 #sinclair

#ZX81 And now we can fly 🚀, and crash into stuff. All coming along nicely.

Pode parecer NADA, mas era TUDO numa altura de NADA!
16K de RAM num #TIMEX #Sinclair 1000 (apenas 2K; e eu na altura até pensava que era apenas 1K, olhando para o original #ZX81) era o verdadeiro pináculo! Isso fez a diferença. Com "NADA" pode fazer-se TUDO! Essa é a engenharia da VIDA!...

Renewed interest in my adventures with 1K ZX Chess for the #Sinclair #ZX81

Includes:
* emulation
* rebuilds
* CYD
* full source explanations
* fun! (+)

https://hackaday.com/2026/04/03/for-such-a-small-program-zx81-1k-chess-sure-packs-a-lot-in/#comment-8282701

+ fun not guaranteed