Sinclair ZX80 / ZX81 / Z88 Forums

Yes, this is what I was thinking about! Very nice music, and as usual Yerzmyey is an artist! 4 bits doesn't seem bad, one 377 may suffice even for the two stereo channels in case! The tracker can even be ported if there are the sources or there is the author around. In the meantime I had a new idea ...

Here a very nice video on how to build the perfect keyboard for the ZX81! It will be better than anything else you have and you'll start to write on ZX81 and then copy the text to the PC LOL ;) https://www.youtube.com/watch?v=c1G5rX_YvCA PS: this is the third part of a video building the entire syst...

@MAK Sorry, I didn't see your answer on the second page until I submitted this reply! Regarding circuit with nowdays prices with 0.10$ you can buy a microcontroller more powerful than the full ZX81 with high quality audio interface already onboard! (e.g. https://www.cnx-software.com/2022/10/22/10-ce...

@Moggy Circuit is very simple: there is an octal flip flop (74377) that drive the resistor DAC network. Two of them can output stereo sounds. The diodes are to enable the write on the flip flops on proper address, e.g. $BF (0b11011111) for the A5 address line (A0 and A1 are reserved for NMI and keyb...

I gave my 5 points to sokob and f1 pitstop

Without the full *pand interfaces I suspect that a single 74273 or 74377 might be used to drive the resistor DAC network. For the HW experts, something like the following picture can work? photo1676223675.jpeg Notes: - the picture is just to give an idea of the realization, and should be revised and...

With this quality one can think to write a mod tracker player to run on bare old hardware!
Just sample size might be a bit limited but 16K or 32K might suffice for very nice songs!!
Where to find the schema for the "couple of resistor" assembly?

If you follow this thread I think this event might be interesting: https://lovebyte.party/

In Doom you kill monsters, not really people, and maybe I'm the second, but believe me there will be a long line if just people would believe like me that you can do it!!

The sky's the limit!!
Super Johan!!!
Waiting for the Doom porting to the 1K!!!!