Search found 5163 matches
- Sat Jun 01, 2024 7:19 pm
- Forum: Hardware
- Topic: Is serial from the cassette ports possible?
- Replies: 1
- Views: 37
Re: Is serial from the cassette ports possible?
Serial input is possible without too much difficulty, as if needed, a connection can be made to the ULA pin. it is also possible to borrow the ULA UK/USA detection input. Serial output is a bit more tricky, as the ZX81 borrows the video output pin on the ULA to produce the tape (Mic) audio output. T...
- Fri May 31, 2024 5:03 pm
- Forum: Hardware
- Topic: uses for the zx80/81 outside of games
- Replies: 8
- Views: 309
Re: uses for the zx80/81 outside of games
Oh, nearly forgot. A UK TV station (Channel 4 IIRC) and a UK Electronics magazine used a ZX81 as the intelligent controller for a floor robot. Yes, it was for Channel 4 and the magazine was "Electronics - The Maplin Magazine" . Screenshot_20240531-160615.png Here's a link to a pdf of the relevant c...
- Fri May 31, 2024 12:25 pm
- Forum: Hardware
- Topic: uses for the zx80/81 outside of games
- Replies: 8
- Views: 309
Re: uses for the zx80/81 outside of games
Oh, nearly forgot. A UK TV station (Channel 4 IIRC) and a UK Electronics magazine used a ZX81 as the intelligent controller for a floor robot.
I’ll see if I can find a photo.
Mark
I’ll see if I can find a photo.
Mark
- Thu May 30, 2024 11:16 pm
- Forum: Hardware
- Topic: uses for the zx80/81 outside of games
- Replies: 8
- Views: 309
Re: uses for the zx80/81 outside of games
Some of my Zeddies came from a training collage. Unlikely they were only used for games.
Mark
Mark
- Thu May 30, 2024 3:53 pm
- Forum: Hardware
- Topic: Data 2000 case ...I think!
- Replies: 2
- Views: 2713
Re: Data 2000 case ...I think!
The photo that spinner72 was trying to post is this . Or use the provided BBcode: [url=https://ibb.co/C28XGf4][img]https://i.ibb.co/Sry1CzH/Data2000.jpg[/img][/url] Like this: https://i.ibb.co/Sry1CzH/Data2000.jpg As this is a web page and not just a picture (in a format that the forum software reco...
- Wed May 29, 2024 12:37 pm
- Forum: Welcome Area
- Topic: Greeting from the UK. Coding again for the Zx81
- Replies: 7
- Views: 329
Re: Greeting from the UK. Coding again for the Zx81
Hello and welcome to our forum RS232!
I hope you enjoy this forum
Although I notice you actually joined some time ago
And thank you for contributing
Mark
I hope you enjoy this forum
Although I notice you actually joined some time ago
And thank you for contributing
Mark
- Wed May 29, 2024 2:58 am
- Forum: Development
- Topic: Does a specy membrane work on a zx81?
- Replies: 2
- Views: 202
Re: Does a specy membrane work on a zx81?
No and yes. The keyboard matrix is the same, but the order of the signals on the membrane tails is different. Plus the location on the boards for the connectors for the tails is different. So if you use separate connectors and add your own wiring so you can change the order of the signals, yes. Mark
- Tue May 28, 2024 12:32 pm
- Forum: Hardware
- Topic: Timex Sinclair 2068 - Troubleshooting
- Replies: 2
- Views: 439
Re: Timex Sinclair 2068 - Troubleshooting
U1 (µA78S40), Q1 (D432C1), CR1 (1N5821), the inductor L2 and associated components form a buck converter (step-down DC-to-DC converter) which decreases and regulates the output voltage to a set amount. It has the limitation that often a fault with it will result in nearly the full input voltage bein...
- Tue May 28, 2024 11:44 am
- Forum: Welcome Area
- Topic: Hello everyone!
- Replies: 2
- Views: 278
Re: Hello everyone!
Hello and welcome to our forum Diegorand!
I hope you enjoy this forum
Mark
I hope you enjoy this forum
Mark
- Tue May 21, 2024 11:19 pm
- Forum: Hardware
- Topic: FIXED Spectrum +2 grey 5V and 12V power short
- Replies: 12
- Views: 800
Re: FIXED Spectrum +2 grey 5V and 12V power short
No problem
Good to know that you fixed it. Thank you also for reporting your findings
Mark
Good to know that you fixed it. Thank you also for reporting your findings
Mark