y86 emmulator

An emulator is hardware or software that duplicates (or emulates) the functions of one computer system (in this case Y86 instructions) on another computer system (the Intel host). The Y86 instructions are different from the Intel x86 instructions. Your assignment is to write an emulator for the Y86 instruction set. Implement a program y86emul that executes Y86 executable files. Your program y86emul should support the following user interface: y86emul [-h] <y86 input file> where <y86 input file> is the name of a Y86 input file, whose structure is defined in Section 5. If -h is given as an argument, your program should just print out help for how the user can run the program and then quit. Erroneous inputs should cause your program to print out: ERROR: <an informative error message> Otherwise, your program should run the Y86 code which may read whatever Y86 inputs from the terminal and/or write Y86 outputs to the terminal as your Y86 program executes. Your emulator will read the input file, allocate a chunk of memory of appropriate size which will act as the Y86 address space, populate that chunk of memory with data and machine instructions from the input file and then starts execution of the Y86 machine instructions. The entire address space of the Y86 program fits within this block of allocated memory. The lowest byte of the address of the allocated block is Y86 address 0 and all other Y86 addresses are offsets within this block. Your emulator will fetch, decode and execute Y86 instructions. This execution is tied to an status code that may take on the value AOK, HLT, ADR, INS. AOK means that everything is fine, no detected errors during execution. HLT means a halt instruction has been encountered, which is how Y86 programs normally end. ADR means some sort of invalid address has been encountered, which also stops Y86 program execution. INS is set for an invalid instruction, which also stops Y86 program execution. Your emulator should print out how the Y86 program execution ended.