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box_entropy 64
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Hi-res Xdraw Pattern
by Deater / dSr

I attempted this before as a 64-byter
but managed to fit a more complete
version this time.

roughly based on:

; Entropy
; by Dave McKellar of Toronto
; Two-line BASIC program
; Found on Beagle Brother's Apple Mechanic Disk

XORs a box pattern, but randomly doubles the
size of the box.  It's hard to generate good
random numbers on 6502 in 64 bytes.

Lovebyte 2024
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