Sinclair ZX80 / ZX81 / Z88 Forums

I used Wilf Rigter's schematic to create my own external keyboard controller. I'm sold out of the pcbs I made. It was my first electronics project, so anyone should be able to do it.

As you can see in many threads on this forum, the general problem with the 16K RAMpack is bad capacitors.

You could open it up and replace the capacitors, and that might fix your RAMpack.

You could start a new.

If you have a PC soundcard that can record the very low recording signal from ZX81, you can data to your PC as .WAV file, and that file can be loaded in EightyOne emulator as well.

(Then you can continue playing until your ZXpand arrives.)

If you implement SAVE in your program, the generated .P file can be moved to your PC with the SD-card. Your emulator could then load your file.

If you don't need to load the pictures again, but just needs to look at them, the you can just use the COPY command to print the screen's content to the printer. This will work both in EightyOne and on real hardware.

Edit: In the emulator you can save the printer-output to an image file.

ZX81 does not support data files.

However you can SAVE in a program, and the program including it's state is saved. When the program is loaded again, it continues on the line after the SAVE.

Both DStar and CrossChase work great on Lambda1. CrossChase however i very difficult with the rubber keys compared to the emulator. It seems as there is a delay from press to reaction. Often I die walking into the borders - and thinking I didn't walk that far. I'll try to play it a little more to se...

mrtinb wrote: ↑Sun Sep 02, 2018 10:32 pm Can your patches be applied to z88dk, so versions of DSTAR and CROSS-CHASE can be made for Lambda-version1?

Thank you olufson, for Lambda1 versions of DStar and CrossChase. I’ll try them on real hardware tomorrow.

And the Lambda 8300 version can be listed here:
https://sinclairzxworld.com/viewforum.php?f=16