I've been using the java Tapeutils program on an old laptop running Peppermint Linux, with the ZX81 plugged into the headphone output and the volume set to about 3/4.
The loading of .p files seems to work pretty well.
But how might I SAVE my own programs to the laptop?
I tried plugging the ZX81 into the mic input and using audacity to record, but got a lot of noise and a SAVE signal that was barely discernable. The noise and the SAVE signal are very quiet, but of compatible level so you end up with little that's useful.
I also note that when the ZX81 is plugged into the headphone or mic socket of the laptop, the touchpad behaves erratically and I have to use a USB mouse! There's a lot of noise. This happens on both my working ZX81s.
I remember back in the day how temperamental the loading and saving was with tapes, I ended up using one cassette recorder to play and a second to record, as each seemed better at a different task.
Save a program from your Zx81 with your computer or an Mp3/phone…
Save it in WAV.
Open EO ("Eighty-One") and in the "WAV window",open the wav and click on the "tape" icon to retrive the P file in the TZX manager.
If there's one than 1 file… delete all of other files to be able to save a "P" file.
In case of multi-files tape, the file will be saved in TZX format.
OR use LOAD"" :