.word $0400 * = $0400 q = $0005 r = $000005 fizz /* these should be optimized to zero page */ sta $05 sta $0005 sta q sta r /* 16-bit */ sta !$0005 sta !q sta $8765 /* 24-bit */ sta @q sta @$000005 sta $876543 rts jmp $fce2 jmp $99fce2 jmp breadbox jmp @breadbox breadbox rts bne fizz rts