#zx81 — Public Fediverse posts

Next step replace the ancient 7405 voltage regulator with a modern decent one.
But I'm on the fence whether to do anything else to this. I think I'd prefer to keep it pristine(ish).
It feels like these initial mods are in keeping/acceptable to the age of the zx:
* connecting to an analogue TV is impractical now, so a composite upgrade feels ok
* the keyboard membrane was toast (cracked and disintegrating) - the replacement looks identical
* and the power regulator can be updated on the same footprint to solve the power/heat issues.
I *could* upgrade the internal ram to remove the need for the external ram cartridge and fit a modern FPGA ULA to fix the video quality and add features like 32k support and high res graphics..... but that feels wrong somehow wrong and too much. 🤔
#retrocomputing #zx81

Next step replace the ancient 7405 voltage regulator with a modern decent one.
But I'm on the fence whether to do anything else to this. I think I'd prefer to keep it pristine(ish).
It feels like these initial mods are in keeping/acceptable to the age of the zx:
* connecting to an analogue TV is impractical now, so a composite upgrade feels ok
* the keyboard membrane was toast (cracked and disintegrating) - the replacement looks identical
* and the power regulator can be updated on the same footprint to solve the power/heat issues.
I *could* upgrade the internal ram to remove the need for the external ram cartridge and fit a modern FPGA ULA to fix the video quality and add features like 32k support and high res graphics..... but that feels wrong somehow wrong and too much. 🤔
#retrocomputing #zx81

Next step replace the ancient 7405 voltage regulator with a modern decent one.
But I'm on the fence whether to do anything else to this. I think I'd prefer to keep it pristine(ish).
It feels like these initial mods are in keeping/acceptable to the age of the zx:
* connecting to an analogue TV is impractical now, so a composite upgrade feels ok
* the keyboard membrane was toast (cracked and disintegrating) - the replacement looks identical
* and the power regulator can be updated on the same footprint to solve the power/heat issues.
I *could* upgrade the internal ram to remove the need for the external ram cartridge and fit a modern FPGA ULA to fix the video quality and add features like 32k support and high res graphics..... but that feels wrong somehow wrong and too much. 🤔
#retrocomputing #zx81

Next step replace the ancient 7405 voltage regulator with a modern decent one.
But I'm on the fence whether to do anything else to this. I think I'd prefer to keep it pristine(ish).
It feels like these initial mods are in keeping/acceptable to the age of the zx:
* connecting to an analogue TV is impractical now, so a composite upgrade feels ok
* the keyboard membrane was toast (cracked and disintegrating) - the replacement looks identical
* and the power regulator can be updated on the same footprint to solve the power/heat issues.
I *could* upgrade the internal ram to remove the need for the external ram cartridge and fit a modern FPGA ULA to fix the video quality and add features like 32k support and high res graphics..... but that feels wrong somehow wrong and too much. 🤔
#retrocomputing #zx81

Next step replace the ancient 7405 voltage regulator with a modern decent one.
But I'm on the fence whether to do anything else to this. I think I'd prefer to keep it pristine(ish).
It feels like these initial mods are in keeping/acceptable to the age of the zx:
* connecting to an analogue TV is impractical now, so a composite upgrade feels ok
* the keyboard membrane was toast (cracked and disintegrating) - the replacement looks identical
* and the power regulator can be updated on the same footprint to solve the power/heat issues.
I *could* upgrade the internal ram to remove the need for the external ram cartridge and fit a modern FPGA ULA to fix the video quality and add features like 32k support and high res graphics..... but that feels wrong somehow wrong and too much. 🤔
#retrocomputing #zx81

Ok... back porch composite mod fitted, still no joy with desktop LCD... But YAY the 4k with video processor can show it! Ooooh.
#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

Лучшие игры легендарной машины: 45 лет назад на свет появилась линейка компьютеров ZX

Sinclair ZX80 по праву считается одним из родоначальников персональной компьютерной революции. Начало R&D-проекта по созданию ZX80 положено в 1979 году, когда Клайв Синклер совместно с командой инженеров приступил к проектированию. Через год мир увидел ZX81. Инженеры Sinclair буквально выжали максимум из него, стремясь удержать минимальную стоимость устройства. А в 1982 году произошел прорыв – свет увидел ZX Spectrum, ставший впоследствии культовой моделью 1980-х годов, сыгравшей ключевую роль в революции, благодаря которой компьютеры впервые появились в домах британцев. Игры для ZX Spectrum загружались с помощью кассетного проигрывателя и выводились на экран телевизора. В отличие от своего монохромного предшественника, они были цветными. Давайте вспомним несколько наиболее – на мой взгляд – знаковых и популярных тайтлов игровой индустрии этой легендарной серии. LOAD ""

https://habr.com/ru/articles/925246/

#zx_spectrum #zx81 #zx80 #sinclair #elite #saboteur #dizzy #игры #старые_игры

So, you want more #RetroChallenge #RC2024 updates? Ok, the RC2014 blog has some updates on the #ZX81 module schematics, and the #Portfolio and #Z88 serial connections to the #RC2014

And for those of you that use RSS, you can subscribe so you always have the latest updates
https://rc2014.co.uk/3259/retro-challenge-2024-10-talking-the-talk-at-9600/