So how do these things work, anyway?

Miscellaneous Forums/General Discussion/So how do these things work, anyway?

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Basically there aren't enough CPU registers to hold every variable (there were only 3 on the C64!)
And there are only 4 on a modern PC (for comparison the Amiga had 8 (d0-d7), and the PowerPC chip has 32 (r0-r31)).