newAssembler.py

###################
#Faisal Alnahhas  #
# Assembler       #
# CSO 2016        #
###################

symbols={"SP": 0, "LCL": 1, "ARG": 2, "THIS":3, "THAT": 4, 
        "R0":0, "R1" : 1, "R2":2, "R3":3, "R4":4, "R5":5,
        "R6":6, "R7":7, "R8":8, "R9":9, "R10":10, "R11":11,
        "R12":12, "R13":13, "R14":14, "R15":15,
        "SCREEN": 16384, "KBD": 24576}
        
        
comp_a0_a1 = { '0':'0101010',  '1':'0111111',  '-1':'0111010', 'D':'0001100', 
                    'A':'0110000',  '!D':'0001101', '!A':'0110001', '-D':'0001111', 
                    '-A':'0110011', 'D+1':'0011111','A+1':'0110111','D-1':'0001110', 
                    'A-1':'0110010','D+A':'0000010','D-A':'0010011','A-D':'0000111', 
                    'D&A':'0000000','D|A':'0010101', 
                    'M':'1110000',   '!M':'1110001','-M':'1110011',                   
                    'M+1':'1110111','M-1':'1110010','D+M':'1000010','D-M':'1010011','M-D':'1000111', 
                    'D&M':'1000000', 'D|M':'1010101' }
                    
dest = {"null":'000', "M":'001', "D":'010', "MD":'011', "A":'100', "AM":'101', "AD":'110', "AMD":'111'}

jump = {"null":'000', "JGT":'001', "JEQ":'010', "JGE":'011', "JLT":'100', 
        "JNE":'101', "JLE":'110', "JMP":'111'}


def readfile():
    fin = open(input("""Choose a .asm file that you want to translate. Make sure
                     that both files are in the same directory """))

    asmFile = fin.readlines()
    fin.close()