Well I don't know, some people can load with no problems. I am not sure what it is, maybe another standard in hungary.zsolt wrote: 2.) Karl's 3 examples: SlotMachinesV1-V2 and the ZX81DEMO.WAV:
As you can see on video,PokeMon wrote:If program is not loaded, could you cancel the loader by pressing SPACE button ?
V1: it seems that the fast loader part of the program starts later than data from WAV - the SPACE terminates.
V2: the system collapsed
ZX81DEMO: i tried and did not work, the system restarted.

I tried the HLG Version 3 but did not work either. Anyway I do only have 1k RAM available now.
