- 1000000 ----- print sign of number (stdio.pvvs)
- 1000001 ----- print magnitude of number (stdio.pvvs)
+ 1000000 ----- slurp registers (heap.pvvs)
+ 1000001 ----- spew registers (heap.pvvs)
+ 1000010 ----- print sign of number (stdio.pvvs)
+ 1000011 ----- print magnitude of number (stdio.pvvs)