35 ;r3 ... effective stack address
36 ;r4 ... effective input addr
41 ;load base address of stack
48 ;generate effective input addr
74 ;check if sp-1 is even or odd
78 ;if odd decrement sp-1
80 ;just to get zero flag unset
84 ;add to sp-1 to result
125 ;case 0 1 2 3 4 5 6 7 8 9
132 ;increment stack addr
147 ;compare sp-1 with sp
149 ;set r8 to -1 if less than
162 ;increment stack addr
189 ;store result to stack
204 ;increment pc if == 0
217 ;decrement stack addr
286 .fill 129, vm_default