Finally figured out this line in the disassembled arrayforth binary:

xor dword [dword 0x202770],0xe1

where the dword at 0x202770 is the address of a subroutine. What it's doing is toggling between two different subroutines:

xor dword [dword ptr0x202770], ((subr0x201175 - $$) ^ (subr0x201194 - $$))

Yes, I still consider Chuck a brilliant programmer, but some of his assembly language tricks make me gag, regardless.

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last updated 2011-11-05 22:55:04. served from tektonic.jcomeau.com