48 ;--------------------------
55 ; z80 removed redundant pop/push
64 ; z80 improved usage of 'inc'
75 ; z80 improved usage of 'dec'
97 ; z80 stream lining 'and' logic
109 ; z80 stream lining 'and' logic
120 ; z80 stream lining 'or' logic
126 ; I don't think this works. neg does a unary minus of A, not HL -- EEP
136 ; ; z80/z180 peephole byte pointer subtraction