I am attempting to create an assembler to machine code
table, something
along the lines of:
move.l a3,$12345678 -> $23 $CB $12 $34 $56 $78
It appears the reason this doesn't exist in the form you describe is
because of a somewhat bit-by-bit encoding. You already stumbled over
this.
But googling (hint) finds:
http://goldencrystal.free.fr/M68kOpcodes.pdf
http://www.ticalc.org/pub/text/68k/68kpm.zip
De