mirror of https://github.com/jborza/emu6502.git
62 lines
2.3 KiB
Python
62 lines
2.3 KiB
Python
import csv
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with open('disassembler.c','w') as outfile:
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with open('6502_ops.csv','r') as file:
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reader = csv.DictReader(file)
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for op in reader:
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print(op)
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args = int(op['bytes'])
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addr_mode = op['addressing mode']
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suffix = '_'+ addr_mode if addr_mode != 'IMP' else ''
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mnemonic = op['mnemonic']
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name = mnemonic + suffix
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outfile.write('case %s: ' % name)
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outfile.write('sprintf(op, ')
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if(addr_mode == 'IMP'):
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outfile.write('"%s"' % mnemonic)
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else: #all other addressing modes use name + suffix
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outfile.write('"%s ' % mnemonic)
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if(addr_mode == 'IMM'):
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outfile.write('#$%02X')
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elif(addr_mode == 'ACC'):
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outfile.write("A")
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elif(addr_mode.startswith('ZP')):
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outfile.write("$%02X")
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if(addr_mode == 'ZPX'):
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outfile.write(",X")
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if(addr_mode == 'ZPY'):
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outfile.write(",Y")
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elif(addr_mode.startswith('ABS')):
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outfile.write("$%02X%02X")
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if(addr_mode == 'ABSX'):
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outfile.write(",X")
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if(addr_mode == 'ABSY'):
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outfile.write(",Y")
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elif(addr_mode == 'IND'):
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outfile.write("($%02X%02X)")
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elif(addr_mode == 'INDX'):
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outfile.write("($%02X,X)")
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elif(addr_mode == 'INDY'):
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outfile.write("($%02X),Y")
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elif(addr_mode == 'REL'):
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outfile.write("$%02X")
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#end format string
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outfile.write("\"")
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#append bytes, reversed as of little endian
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if(args > 2):
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outfile.write(", code[2]")
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if(args > 1):
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outfile.write(", code[1]")
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outfile.write(');')
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if(args > 1):
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outfile.write("bytes = %s;" % args)
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#sprintf(op, "%s"' % ())
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#outfile.write('#define %s %s' % (name, op['opcode']))
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outfile.write('break;')
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outfile.write('\n')
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