#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

C64 Studio 8.1 Expands Commodore 64 Development Tools with New Features and Fixes
#C64Studio #Commodore64 #C64 #C64Development #AssemblyProgramming #BASICV2 #RetroComputing #ZX81 #GeorgRottensteiner
https://theoasisbbs.com/c64-studio-8-1-expands-commodore-64-development-tools-with-new-features-and-fixes/?feed_id=2775&_unique_id=67fd0750b8d43

Repórter Retro 095

https://retropolis.com.br/2023/08/30/reporter-retro-095/

#ReprterRetro #8BitGuy #ADM3A #AdrianBlack #AmigaLove #AmstradCpc #Atari800XL #Clone #CommanderX16 #Commodore128 #F18A #famicom #GEOS #IBM #IBM650 #Intel #Livros #Mainframes #microsoft #MSDOS #MSXVDP #MSXDOS #MSXRio #NES #NoelLlopis #SegaSC3000 #SegaSG1000 #Terminais #TMS9918 #TNVDP #UsagiElectric #VictorTrucco #ZX81