output from C program:

12  24   0x00000018


output from Y86 program:

Stopped in 18 steps at PC = 0x27.  Status 'HLT', CC Z=0 S=0 O=0
Changes to registers:
%eax:	0x00000000	0x00000018
%ecx:	0x00000000	0x0000000c
%esp:	0x00000000	0x00000400

Changes to memory:
0x0000:	0x0400f430	0x00000018

0x03f8:	0x00000000	0x00000013   <-- stack
0x03fc:	0x00000000	0x0000000c