Is assembly code cross-platform?

Question

0x042444FF; /* inc dword ptr [esp+4] */

0x042444FF is the machine code,while inc dword ptr [esp+4] is the assembly code,

Answer 1

Assembly code is basically a worded form of the machine code; it is designed to make writing machine code a little more convenient and readable. There is pretty much a one-to-one mapping of the two, so one assembly statement is turned into its machine code equivalent. Macine code is CPU-dependent. Assembly is therefore, also CPU-dependent.