#zx81 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #zx81, aggregated by home.social.
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OpenSpand: a ZX81 Expansion Cartridge based on an RP2350 board - 1-56KiB of RAM with software configurable mapping and size, SD card storage with transparent LOAD/SAVE integration, pseudo high resolution graphics #DIY #ZX81 https://codeberg.org/NollKollTroll/OpenSpand
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OpenSpand: a ZX81 Expansion Cartridge based on an RP2350 board - 1-56KiB of RAM with software configurable mapping and size, SD card storage with transparent LOAD/SAVE integration, pseudo high resolution graphics #DIY #ZX81 https://codeberg.org/NollKollTroll/OpenSpand
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OpenSpand: a ZX81 Expansion Cartridge based on an RP2350 board - 1-56KiB of RAM with software configurable mapping and size, SD card storage with transparent LOAD/SAVE integration, pseudo high resolution graphics #DIY #ZX81 https://codeberg.org/NollKollTroll/OpenSpand
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OpenSpand: a ZX81 Expansion Cartridge based on an RP2350 board - 1-56KiB of RAM with software configurable mapping and size, SD card storage with transparent LOAD/SAVE integration, pseudo high resolution graphics #DIY #ZX81 https://codeberg.org/NollKollTroll/OpenSpand
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OpenSpand: a ZX81 Expansion Cartridge based on an RP2350 board - 1-56KiB of RAM with software configurable mapping and size, SD card storage with transparent LOAD/SAVE integration, pseudo high resolution graphics #DIY #ZX81 https://codeberg.org/NollKollTroll/OpenSpand
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Racing Snake (2026) by Animated ALex for ZX Spectrum (and ZX81). Survive the race - a BASIC 1 LINER game... everyone can do 10 LINES, eh? :-)
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Racing Snake (2026) by Animated ALex for ZX Spectrum (and ZX81). Survive the race - a BASIC 1 LINER game... everyone can do 10 LINES, eh? :-)
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Racing Snake (2026) by Animated ALex for ZX Spectrum (and ZX81). Survive the race - a BASIC 1 LINER game... everyone can do 10 LINES, eh? :-)
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Racing Snake (2026) by Animated ALex for ZX Spectrum (and ZX81). Survive the race - a BASIC 1 LINER game... everyone can do 10 LINES, eh? :-)
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Racing Snake (2026) by Animated ALex for ZX Spectrum (and ZX81). Survive the race - a BASIC 1 LINER game... everyone can do 10 LINES, eh? :-)
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Every #ZX81 Expansion Card You Ever Wanted, All At Once
An RP2350 adds:
- RAM expansion (64KB total)
- SD card storage
- high-res graphics
- sound
- joystick port
- serial ports
- choice of ROMs
- and composite video!(via Hackaday)
https://hackaday.com/2026/09/15/every-zx81-expansion-card-you-ever-wanted-all-at-once/
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Every #ZX81 Expansion Card You Ever Wanted, All At Once
An RP2350 adds:
- RAM expansion (64KB total)
- SD card storage
- high-res graphics
- sound
- joystick port
- serial ports
- choice of ROMs
- and composite video!(via Hackaday)
https://hackaday.com/2026/09/15/every-zx81-expansion-card-you-ever-wanted-all-at-once/
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Every #ZX81 Expansion Card You Ever Wanted, All At Once
An RP2350 adds:
- RAM expansion (64KB total)
- SD card storage
- high-res graphics
- sound
- joystick port
- serial ports
- choice of ROMs
- and composite video!(via Hackaday)
https://hackaday.com/2026/09/15/every-zx81-expansion-card-you-ever-wanted-all-at-once/
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Every #ZX81 Expansion Card You Ever Wanted, All At Once
An RP2350 adds:
- RAM expansion (64KB total)
- SD card storage
- high-res graphics
- sound
- joystick port
- serial ports
- choice of ROMs
- and composite video!(via Hackaday)
https://hackaday.com/2026/09/15/every-zx81-expansion-card-you-ever-wanted-all-at-once/
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Every #ZX81 Expansion Card You Ever Wanted, All At Once
An RP2350 adds:
- RAM expansion (64KB total)
- SD card storage
- high-res graphics
- sound
- joystick port
- serial ports
- choice of ROMs
- and composite video!(via Hackaday)
https://hackaday.com/2026/09/15/every-zx81-expansion-card-you-ever-wanted-all-at-once/
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Went to the newsagency for Retro Gamer as My Zevious Seven gets a mention in the August issue. That copy wasn't in stock yet, but to my surprise, there's a good #ZX81 write-up in the May 2026 issue with a ton on old and new 81 games and yay, Tut-Tut and Minos Knossos get a good write-up!
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Went to the newsagency for Retro Gamer as My Zevious Seven gets a mention in the August issue. That copy wasn't in stock yet, but to my surprise, there's a good #ZX81 write-up in the May 2026 issue with a ton on old and new 81 games and yay, Tut-Tut and Minos Knossos get a good write-up!
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Went to the newsagency for Retro Gamer as My Zevious Seven gets a mention in the August issue. That copy wasn't in stock yet, but to my surprise, there's a good #ZX81 write-up in the May 2026 issue with a ton on old and new 81 games and yay, Tut-Tut and Minos Knossos get a good write-up!
-
Went to the newsagency for Retro Gamer as My Zevious Seven gets a mention in the August issue. That copy wasn't in stock yet, but to my surprise, there's a good #ZX81 write-up in the May 2026 issue with a ton on old and new 81 games and yay, Tut-Tut and Minos Knossos get a good write-up!
-
Went to the newsagency for Retro Gamer as My Zevious Seven gets a mention in the August issue. That copy wasn't in stock yet, but to my surprise, there's a good #ZX81 write-up in the May 2026 issue with a ton on old and new 81 games and yay, Tut-Tut and Minos Knossos get a good write-up!
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The year is 2026 and I just bought a brand new #ZX81 game on cassette tape. How do you like dem square waves? #RetroGaming
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The year is 2026 and I just bought a brand new #ZX81 game on cassette tape. How do you like dem square waves? #RetroGaming
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The year is 2026 and I just bought a brand new #ZX81 game on cassette tape. How do you like dem square waves? #RetroGaming
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The year is 2026 and I just bought a brand new #ZX81 game on cassette tape. How do you like dem square waves? #RetroGaming
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The year is 2026 and I just bought a brand new #ZX81 game on cassette tape. How do you like dem square waves? #RetroGaming
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TK/ZX Multi Tools for Windows, by Fava. A multi-function utility for the ZX Spectrum/TK90X and ZX81/TK85 lines:
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TK/ZX Multi Tools for Windows, by Fava. A multi-function utility for the ZX Spectrum/TK90X and ZX81/TK85 lines:
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TK/ZX Multi Tools for Windows, by Fava. A multi-function utility for the ZX Spectrum/TK90X and ZX81/TK85 lines:
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TK/ZX Multi Tools for Windows, by Fava. A multi-function utility for the ZX Spectrum/TK90X and ZX81/TK85 lines:
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TK/ZX Multi Tools for Windows, by Fava. A multi-function utility for the ZX Spectrum/TK90X and ZX81/TK85 lines:
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In the future, you will have uninterrupted access to computing for one single payment of $149.95, indefinitely.
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In the future, you will have uninterrupted access to computing for one single payment of $149.95, indefinitely.
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In the future, you will have uninterrupted access to computing for one single payment of $149.95, indefinitely.
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In the future, you will have uninterrupted access to computing for one single payment of $149.95, indefinitely.
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In the future, you will have uninterrupted access to computing for one single payment of $149.95, indefinitely.
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This wednesday will be presenting "Recovering Silvestre Pestana Computer Poetry for ZX81 and ZX Spectrum"
#ZXspectrum #ZX81 #ComputerPoetry #SilvestrePestana #DigitalPreservation #RetroComputing #Art #Poetry
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This wednesday will be presenting "Recovering Silvestre Pestana Computer Poetry for ZX81 and ZX Spectrum"
#ZXspectrum #ZX81 #ComputerPoetry #SilvestrePestana #DigitalPreservation #RetroComputing #Art #Poetry
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This wednesday will be presenting "Recovering Silvestre Pestana Computer Poetry for ZX81 and ZX Spectrum"
#ZXspectrum #ZX81 #ComputerPoetry #SilvestrePestana #DigitalPreservation #RetroComputing #Art #Poetry
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This wednesday will be presenting "Recovering Silvestre Pestana Computer Poetry for ZX81 and ZX Spectrum"
#ZXspectrum #ZX81 #ComputerPoetry #SilvestrePestana #DigitalPreservation #RetroComputing #Art #Poetry
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This wednesday will be presenting "Recovering Silvestre Pestana Computer Poetry for ZX81 and ZX Spectrum"
#ZXspectrum #ZX81 #ComputerPoetry #SilvestrePestana #DigitalPreservation #RetroComputing #Art #Poetry
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Forgot to add the finished assembled shot...
PCB rebuild project successful.
Unregulated so actually showing 12v with no load. 🤣
I'll actually use a modern switched 9v for my ZX, but I wanted to get the original supply back working again.
#retrocomputing #zx81 -
Forgot to add the finished assembled shot...
PCB rebuild project successful.
Unregulated so actually showing 12v with no load. 🤣
I'll actually use a modern switched 9v for my ZX, but I wanted to get the original supply back working again.
#retrocomputing #zx81 -
Forgot to add the finished assembled shot...
PCB rebuild project successful.
Unregulated so actually showing 12v with no load. 🤣
I'll actually use a modern switched 9v for my ZX, but I wanted to get the original supply back working again.
#retrocomputing #zx81 -
Forgot to add the finished assembled shot...
PCB rebuild project successful.
Unregulated so actually showing 12v with no load. 🤣
I'll actually use a modern switched 9v for my ZX, but I wanted to get the original supply back working again.
#retrocomputing #zx81 -
Forgot to add the finished assembled shot...
PCB rebuild project successful.
Unregulated so actually showing 12v with no load. 🤣
I'll actually use a modern switched 9v for my ZX, but I wanted to get the original supply back working again.
#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 -
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 -
Ok... back porch composite mod fitted, still no joy with desktop LCD... But YAY the 4k with video processor can show it! Ooooh.
#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 -
Ok... back porch composite mod fitted, still no joy with desktop LCD... But YAY the 4k with video processor can show it! Ooooh.
#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 -
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