Happy 2021,
Where are you based?
Search found 295 matches
- Fri Jan 08, 2021 9:10 am
- Forum: Hardware
- Topic: ZX Nuvo 48 Help
- Replies: 8
- Views: 657
- Sat Dec 19, 2020 10:24 pm
- Forum: Hardware
- Topic: ZX Nuvo 48 Help
- Replies: 8
- Views: 657
Re: ZX Nuvo 48 Help
Hi, Are able to solder missing components? Do you have any experience with reading circuit diagrams? Do you have basic tools like a multimeter? If you need any documentation you can contact @superfo, and he is registered on this forum. Don designed this board and he will be able to give you a hand. ...
- Fri Dec 18, 2020 2:06 pm
- Forum: Sinclair Misc
- Topic: Quirky nerdy hardware quiz time
- Replies: 9
- Views: 585
Re: Quirky nerdy hardware quiz time
1. 5 but if ULA is 5C112 or later type + 1. 3. 8x5 4. ZX Spectrum 128K +2 (with Issue 3 motherboard) 5. Combined Cycle Gas Turbine 7. ZX81 Issue 2 does not exist in the wild 8. ACIS chips in Enterprise 128K 10. 1.4A @ 9Vdc = 12.6W 11. Light-Emitting Diode ; blue LED Vf is in range between 2.5V to 3....
- Thu Dec 17, 2020 9:35 am
- Forum: ZX Spectrum Lounge
- Topic: Superfo Harlequin 128 Issue 4 run CP/M Plus
- Replies: 1
- Views: 276
Re: Superfo Harlequin 128 Issue 4 run CP/M Plus
Nice upgrade.
- Wed Dec 16, 2020 9:31 am
- Forum: Software
- Topic: ZX81 Demos 2020
- Replies: 0
- Views: 179
ZX81 Demos 2020
Four brand new and fresh demos for Zeddy presented last night: https://www.youtube.com/playlist?list=P ... v6o0LV46a7
.p files will available for download at https://www.pouet.net soon.
.p files will available for download at https://www.pouet.net soon.
- Fri Oct 23, 2020 2:09 pm
- Forum: Hardware
- Topic: Spectrum +3 Keyboard issues
- Replies: 7
- Views: 1866
Re: Spectrum +3 Keyboard issues
Have a look around 40077 chip (ULA). I would not be surprised if some of soldering joints are cracked. It might be a good idea to re-flow the chip.
- Thu Oct 22, 2020 10:49 pm
- Forum: SALES
- Topic: Lambda 8300 on eBay
- Replies: 5
- Views: 3279
Re: Lambda 8300 on eBay
Thanks for info, but postage limited to Germany only.
- Tue Sep 29, 2020 12:58 pm
- Forum: Sinclair Misc
- Topic: Jupiter ACE (again)
- Replies: 123
- Views: 72839
Re: Jupiter ACE (again)
Hi Andy,
It is a very good idea
I've got a silly question. All buffered lines have pull-ups. Do you want to keep them HIGH when they are nor used? In my understanding they should be LOW if they are not used/active.
It is a very good idea

- Mon Sep 28, 2020 7:37 am
- Forum: Sinclair Misc
- Topic: Jupiter ACE (again)
- Replies: 123
- Views: 72839
Re: Jupiter ACE (again)
I have never tried to load any WAV files, only TAPs from JAA websites. If you have TZXduino I could share a few files that works and you try with them.
Bear in mind that Jupiter ACE TZX files should be converted to ZX Spectrum timings if you would like to use a bulk standard TZXduino firmware.
Bear in mind that Jupiter ACE TZX files should be converted to ZX Spectrum timings if you would like to use a bulk standard TZXduino firmware.
- Sun Sep 27, 2020 6:26 pm
- Forum: Sinclair Misc
- Topic: Jupiter ACE (again)
- Replies: 123
- Views: 72839
Re: Jupiter ACE (again)
Pin 13 of Z14 is directly connected to the data line D5 and you can see all data flowing there. Take pin 13 of Z14 out of the socket and then see what you have there during the LOAD execution. If you would like to separate LOAD signal only, the oscilloscope should be triggered by the 0xFE read pulses.