Sinclair Research
@sinclairresearch.bsky.social
Customer support for your ZX80, ZX81 and other classic hardware. We’re sorry to tell you that your warranty has expired.
Reposted by Sinclair Research
Spread the word: November 25 is #ChuckPeddleDay — celebrating the engineer behind the legendary MOS 6502 processor, the heart of so many home computers and game consoles of the 80s. 💾🕹️
If you own a machine powered by a 6502, fire it up on that day and share a photo with the hashtag #ChuckPeddleDay
If you own a machine powered by a 6502, fire it up on that day and share a photo with the hashtag #ChuckPeddleDay
November 11, 2025 at 7:42 PM
Spread the word: November 25 is #ChuckPeddleDay — celebrating the engineer behind the legendary MOS 6502 processor, the heart of so many home computers and game consoles of the 80s. 💾🕹️
If you own a machine powered by a 6502, fire it up on that day and share a photo with the hashtag #ChuckPeddleDay
If you own a machine powered by a 6502, fire it up on that day and share a photo with the hashtag #ChuckPeddleDay
Reposted by Sinclair Research
I had this book growing up - was amazing.
I'm still astounded at a 1K chess!!
I'm still astounded at a 1K chess!!
November 10, 2025 at 10:03 AM
I had this book growing up - was amazing.
I'm still astounded at a 1K chess!!
I'm still astounded at a 1K chess!!
Reposted by Sinclair Research
`store` and `load` implemented, using #JupiterAce code, as it is more robust than ZX-Forth original. This means you cannot load screens from #ZX81, though you could load screens into Ace Forth (if you can think of a use for that). With that done, I can now start coding! #minstrel4th #retrogaming
November 10, 2025 at 7:40 PM
`store` and `load` implemented, using #JupiterAce code, as it is more robust than ZX-Forth original. This means you cannot load screens from #ZX81, though you could load screens into Ace Forth (if you can think of a use for that). With that done, I can now start coding! #minstrel4th #retrogaming
Reposted by Sinclair Research
"the string handling on the ZX81 is better than on almost any machine"
Fighting words!
Fighting words!
Home Computing Weekly Magazine Issue 008, page 38
Full mag --> https://archive.org/stream/home-computing-weekly-008#page/n37
Full mag --> https://archive.org/stream/home-computing-weekly-008#page/n37
November 11, 2025 at 3:32 PM
"the string handling on the ZX81 is better than on almost any machine"
Fighting words!
Fighting words!
Reposted by Sinclair Research
In October 2020 I released an adapter to use the 8580 SID Soundchip in place of the 6581 SID. Useful to use the other type of SID in your Commodore 64 'breadbin', or with my SID interfaces for Z80 systems (for SAM Coupe and RC2014). Info / Buy: 8580.samcoupe.com
#commodore #c64 #soundchip #chiptune
#commodore #c64 #soundchip #chiptune
November 11, 2025 at 5:04 PM
In October 2020 I released an adapter to use the 8580 SID Soundchip in place of the 6581 SID. Useful to use the other type of SID in your Commodore 64 'breadbin', or with my SID interfaces for Z80 systems (for SAM Coupe and RC2014). Info / Buy: 8580.samcoupe.com
#commodore #c64 #soundchip #chiptune
#commodore #c64 #soundchip #chiptune
There is something amazing about using a printer to repair a printer. The belts in the original ZX Printers have all turned to organic goo after 44 years, but it turns out you can make your own using TPU filament and a different kind of printer..
November 10, 2025 at 5:36 AM
There is something amazing about using a printer to repair a printer. The belts in the original ZX Printers have all turned to organic goo after 44 years, but it turns out you can make your own using TPU filament and a different kind of printer..
Reposted by Sinclair Research
Testing the Stunt Spectrum / Z80 PIO board ready for RetroFest. Thankfully it’s still working since the last show.
November 9, 2025 at 3:52 PM
Testing the Stunt Spectrum / Z80 PIO board ready for RetroFest. Thankfully it’s still working since the last show.
Reposted by Sinclair Research
I had a PYE B&W TV too, though not like that. I remember it had a rotary tuning dial. My gran gave it me. Used it on my ZX81 and Spectrum. Parents were reluctant for me to plug it into the big colour TV, though I did sneak it down occasionally.
November 9, 2025 at 3:13 PM
I had a PYE B&W TV too, though not like that. I remember it had a rotary tuning dial. My gran gave it me. Used it on my ZX81 and Spectrum. Parents were reluctant for me to plug it into the big colour TV, though I did sneak it down occasionally.
Reposted by Sinclair Research
November 9, 2025 at 7:46 PM
Reposted by Sinclair Research
New blog post - a simple LED tester for PET, VIC20 and C64 Userports.
blog.tynemouthsoftware.co.uk/2025/11/user...
#blinkenlights
www.tindie.com/products/tyn...
blog.tynemouthsoftware.co.uk/2025/11/user...
#blinkenlights
www.tindie.com/products/tyn...
November 9, 2025 at 12:54 PM
New blog post - a simple LED tester for PET, VIC20 and C64 Userports.
blog.tynemouthsoftware.co.uk/2025/11/user...
#blinkenlights
www.tindie.com/products/tyn...
blog.tynemouthsoftware.co.uk/2025/11/user...
#blinkenlights
www.tindie.com/products/tyn...
Reposted by Sinclair Research
#8bit gene splicing! #C64 SID on #Z80! In 2003 I released an interface to use the #Commodore64 SID soundchip on the #SAMCoupe, in 2020 I released a similar interface for #RC2014 & compatibles (inc #ZXSpectrum via ZX-RC Bus Interface)
SAM: www.samcoupe.com/quickshop.htm
RC2014: 2014.samcoupe.com
SAM: www.samcoupe.com/quickshop.htm
RC2014: 2014.samcoupe.com
November 6, 2025 at 8:53 PM
#8bit gene splicing! #C64 SID on #Z80! In 2003 I released an interface to use the #Commodore64 SID soundchip on the #SAMCoupe, in 2020 I released a similar interface for #RC2014 & compatibles (inc #ZXSpectrum via ZX-RC Bus Interface)
SAM: www.samcoupe.com/quickshop.htm
RC2014: 2014.samcoupe.com
SAM: www.samcoupe.com/quickshop.htm
RC2014: 2014.samcoupe.com
Reposted by Sinclair Research
📌 #introduction
Developer of 32+ years for the fantastic #SAMCoupe #computer, producing a huge range of #hardware, #software and SAM Revival #magazine for this fun, quirky system!
Plus #Retrocomputing hardware for #ZXSpectrum, #RC2014 and several #Chiptune accessories.
🌐 www.samcoupe.com
Developer of 32+ years for the fantastic #SAMCoupe #computer, producing a huge range of #hardware, #software and SAM Revival #magazine for this fun, quirky system!
Plus #Retrocomputing hardware for #ZXSpectrum, #RC2014 and several #Chiptune accessories.
🌐 www.samcoupe.com
March 24, 2025 at 4:17 PM
📌 #introduction
Developer of 32+ years for the fantastic #SAMCoupe #computer, producing a huge range of #hardware, #software and SAM Revival #magazine for this fun, quirky system!
Plus #Retrocomputing hardware for #ZXSpectrum, #RC2014 and several #Chiptune accessories.
🌐 www.samcoupe.com
Developer of 32+ years for the fantastic #SAMCoupe #computer, producing a huge range of #hardware, #software and SAM Revival #magazine for this fun, quirky system!
Plus #Retrocomputing hardware for #ZXSpectrum, #RC2014 and several #Chiptune accessories.
🌐 www.samcoupe.com
Trying to find that keyword you've not used recently on the ZX Spectrum keyboard.
November 8, 2025 at 3:55 PM
Trying to find that keyword you've not used recently on the ZX Spectrum keyboard.
Reposted by Sinclair Research
I, like many other started with the good old ZX81, on to a Spectrum and showed some interest in computers at work. Ended up being the DP manager working in an arcane language called DACL and DOS commands, then onto IBM system 36 /38 before getting fed up being inside and left to drive lorries..
November 6, 2025 at 3:31 PM
I, like many other started with the good old ZX81, on to a Spectrum and showed some interest in computers at work. Ended up being the DP manager working in an arcane language called DACL and DOS commands, then onto IBM system 36 /38 before getting fed up being inside and left to drive lorries..
Reposted by Sinclair Research
CPCDroid – an Amstrad CPC Emulator to the Android platform. It is based on PSPCAP32 by Zx81 and using Pelya SDL Android Port and official NDK, the new CPCDroid allows full emulation of the CPC machines (464, 6128, etc…). archivegame.org/cpcdroid/ #game #emulator #amstrad #android
CPCDroid
Web site: fmsdevel.wisecoding.es/blog/cpcdroid—2011-03-02 (not active) Category: Machine Emulators Platform: Android License: Freeware Interface: GUI Wikipedia: First release: 2011 CPCDroid – an…
archivegame.org
November 7, 2025 at 12:16 PM
CPCDroid – an Amstrad CPC Emulator to the Android platform. It is based on PSPCAP32 by Zx81 and using Pelya SDL Android Port and official NDK, the new CPCDroid allows full emulation of the CPC machines (464, 6128, etc…). archivegame.org/cpcdroid/ #game #emulator #amstrad #android
Reposted by Sinclair Research
- T'as connu Windows 3.1 qui fonctionnait sous DOS. T'es un vieux.
Moi...
Moi...
November 7, 2025 at 5:32 PM
- T'as connu Windows 3.1 qui fonctionnait sous DOS. T'es un vieux.
Moi...
Moi...
Reposted by Sinclair Research
Am pretty happy with how ZX-FORTH is running on #Minstrel4th. But, before I tackle any significant projects, I need to get `LOAD` and `STORE` working. They're still expecting a #ZX81 cassette interface. #retrogaming
November 8, 2025 at 9:45 AM
Am pretty happy with how ZX-FORTH is running on #Minstrel4th. But, before I tackle any significant projects, I need to get `LOAD` and `STORE` working. They're still expecting a #ZX81 cassette interface. #retrogaming
November 7, 2025 at 1:10 AM
November 6, 2025 at 4:08 PM
I don't want to work today. I want to play on my computer.
November 5, 2025 at 8:40 PM
I don't want to work today. I want to play on my computer.
Reposted by Sinclair Research
I was 8 when I was given a 48K ZX Spectrum and starting tinkering away straight away - I can still remember a lot of what I did in great detail. Annoyingly too, I've lost also all of of my graph paper doodles of speccy graphics, not sure where they went but again a few bits survive...
November 5, 2025 at 6:29 PM
I was 8 when I was given a 48K ZX Spectrum and starting tinkering away straight away - I can still remember a lot of what I did in great detail. Annoyingly too, I've lost also all of of my graph paper doodles of speccy graphics, not sure where they went but again a few bits survive...
Reposted by Sinclair Research
The most popular piece of hardware for the Apple II was made by Microsoft. And it was a Z80.
devblogs.microsoft.com/oldnewthing/...
devblogs.microsoft.com/oldnewthing/...
The Microsoft SoftCard for the Apple II: Getting two processors to share the same memory - The Old New Thing
Reportedly Microsoft's first hardware product.
devblogs.microsoft.com
November 5, 2025 at 6:44 PM
The most popular piece of hardware for the Apple II was made by Microsoft. And it was a Z80.
devblogs.microsoft.com/oldnewthing/...
devblogs.microsoft.com/oldnewthing/...
Reposted by Sinclair Research
I have ported Tree Forth/ ZX-Forth from #zx81 to #JupiterAce/ #Minstrel4th. With no display generation to worry about, #Forth runs amazingly well on Minstrel 4th. It can find all primes in first 500 integers, using Sieve of Eratosthene, in well under a second. #RETROGAMING github.com/markgbeckett...
November 2, 2025 at 8:14 PM
I have ported Tree Forth/ ZX-Forth from #zx81 to #JupiterAce/ #Minstrel4th. With no display generation to worry about, #Forth runs amazingly well on Minstrel 4th. It can find all primes in first 500 integers, using Sieve of Eratosthene, in well under a second. #RETROGAMING github.com/markgbeckett...