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Cheers for the explanation. Will have to pickup a new interface, thanks for the help 🤘

So I built a Spectrum Issue 3b from scratch using all new parts, it works perfectly. But this game crashes in exactly the same way as on the original Issue 2. So the only thing in common hardware wise is the original (1980s) Ram Turbo Joystick interface... unplug that and the game works fine. Maybe some bug in the joystick controller?

I get 34,128. all the main board components are original, I did try it with a vLA82 ULA chip as well and it did the same thing. I will be building a DIY issue 3b soon so will try on that, to see if that works.

Hi thank you, it is just a normal 48k spectrum issue 2, was not aware there were different issue 2s? It is using stock ULA and has been recapped/7805 replaced with switching unit. Loading from tape on an old Panasonic rebranded tape player from the 80s, tried different tapes just in case but it made no difference.

I have also run zxdiag rom soak test for several hours just to check everything but it is fine. It is only this game that crashes that I have found.

Hi Loading this from tape on my Issue 2 spectrum 48k, the game crashes after displaying all the random characters then grid, it starts to display the high score screen then resets the computer. I tried the standard loader version both pac/puck as well. Does it only work from sdcard?