Nasm 64 bit 2-Pass assembler that support 64 bit instruction and debugger written in purely in python2.7 instruction that support ADD, SUB, MUL, DIV ,MOV, and debugg whole program.

• Define symbols and literals and remember them in symbol table and literal table respectively.
• Keep track of location counter
• Process pseudo-operations

• Generate object code by converting symbolic op-code into respective numeric op-code
• Generate data for literals and look for values of symbols

• Debugg given program line by line by built in debugger