"On Apple 2, there's no disk controller so the CPU can't do anything else while reading the disk", said the manual.

It's time to update the manual.



And yes, it was technically challenging. GROUiK did an amazing job here.

It is indeed considered impossible to load data from disk on A2 while having interrupts, because the CPU must NOT be interrupted during a sector read.

But he found a wonderful workaround :) and yes there's an interrupt playing the music!!

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