> goto  $ + 1
> Basically, I am confused as to what the $ represents.

Think of it as 'here', so 'goto $ + 1' means 'jump to the next
instruction. The same effect as a nop, but a goto takes 2 instruction
cycles instead of a nop just one, so it is a code-effective way to spend
two cycles. Likewise 'call x' where x is a return (use an existing
return) is a code-effective way to burn 4 cycles.

Wouter van Ooijen

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