45 ;r3 ... effective stack address
46 ;r4 ... effective input addr
51 ;load base address of stack
58 ;generate effective input addr
84 ;check if sp-1 is even or odd
88 ;if odd decrement sp-1
90 ;just to get zero flag unset
94 ;add to sp-1 to result
135 ;case 0 1 2 3 4 5 6 7 8 9
142 ;increment stack addr
157 ;compare sp-1 with sp
159 ;set r8 to -1 if less than
172 ;increment stack addr
199 ;store result to stack
214 ;increment pc if == 0
227 ;decrement stack addr
296 .fill 129, vm_default