Sinclair ZX80 / ZX81 Forums

Thanks for the pictures.
I can send you new 3.5mm connectors (original) . No need to slaughter a Zeddy for this.
Just pm me your address.
Kind regards Paul

Can you provide a link to the website of the producers?
Was there any documentation with the board? We need to know what modifications compared to the original board were implemented.
Kind regards Paul

Sorry, Mark is of course right.
I forgot to load c with 231.
I will change the program in my previous post.
Which I have now done.
Thanks Mark.

Due to the lack of in and out commands you need machine code for switching vLA81 modes. I have prepared a little basic program for you to enter that will create a machine code program in a REM line. It's not tested yet as I have to open my TS1000 and unscrew the PCB in order to change my vLA81 to so...

Most probably at sellmyretro.com.

Hello and welcome.
Don't hesitate to ask if you have any questions.
Kind regards Paul

To all members in the UK.
Kind regards Paul

Well, there was not enough space in the 4k ROM. You need to type them in instead of the usual single key entry system.
Kind regards Paul

EightyOne can read wav files, so you can convert to p file with its help.
Otherwise persons with a ZXpand can use tapescrape Program to convert a cassette to p files.
If you want me to I can do this for you, but my response time is quite slow.
Kind regards Paul

As SMD I didn’t find electrolyte capacitors In your use case it's not necessary to use a polarized capacitor. Any 4u7 capacitor will do. In SMD you find larger non polarized capacitors than in through hole. Kind regards Paul P. S. https://m.reichelt.de/Elkos-SMD-Low-ESR-105-C/2/index.html?ACTION=2&...