opcode and disassembler generatory (python)

data/6502_ops.csv

@@ -0,0 +1,176 @@
+opcode,mnemonic,addressing mode,bytes,cycles,flags
+0x69,ADC,IMM,2,2,CZidbVN
+0x65,ADC,ZP,2,3,CZidbVN
+0x75,ADC,ZPX,2,4,CZidbVN
+0x6d,ADC,ABS,3,4,CZidbVN
+0x7d,ADC,ABSX,3,4,CZidbVN
+0x79,ADC,ABSY,3,4,CZidbVN
+0x61,ADC,INDX,2,6,CZidbVN
+0x71,ADC,INDY,2,5,CZidbVN
+
+0x29,AND,IMM,2,2,cZidbvN
+0x25,AND,ZP,2,3,cZidbvN
+0x35,AND,ZPX,2,4,cZidbvN
+0x2d,AND,ABS,3,4,cZidbvN
+0x3d,AND,ABSX,3,4,cZidbvN
+0x39,AND,ABSY,3,4,cZidbvN
+0x21,AND,INDX,2,6,cZidbvN
+0x31,AND,INDY,2,5,cZidbvN
+
+0x0a,ASL,ACC,1,2,CZidbvN
+0x06,ASL,ZP,2,5,CZidbvN
+0x16,ASL,ZPX,2,6,CZidbvN
+0x0e,ASL,ABS,3,6,CZidbvN
+0x1e,ASL,ABSX,3,7,CZidbvN
+
+0x90,BCC,REL,2,2/3,czidbvn
+0xB0,BCS,REL,2,2/3,czidbvn
+0xF0,BEQ,REL,2,2/3,czidbvn
+0x30,BMI,REL,2,2/3,czidbvn
+0xD0,BNE,REL,2,2/3,czidbvn
+0x10,BPL,REL,2,2/3,czidbvn
+0x50,BVC,REL,2,2/3,czidbvn
+0x70,BVS,REL,2,2/3,czidbvn
+
+0x24,BIT,ZP,2,3,cZidbVN
+0x2c,BIT,ABS,3,4,cZidbVN
+
+0x00,BRK,IMP,1,7,czidbvn
+0x18,CLC,IMP,1,2,Czidbvn
+0xd8,CLD,IMP,1,2,cziDbvn
+0x58,CLI,IMP,1,2,czIdbvn
+0xb8,CLV,IMP,1,2,czidbVn
+0xea,NOP,IMP,1,2,czidbvn
+0x48,PHA,IMP,1,3,czidbvn
+0x68,PLA,IMP,1,4,cZidbvN
+0x08,PHP,IMP,1,3,czidbvn
+0x28,PLP,IMP,1,4,CZIDBVN
+0x40,RTI,IMP,1,6,czidbvn
+0x60,RTS,IMP,1,6,czidbvn
+0x38,SEC,IMP,1,2,Czidbvn
+0xf8,SED,IMP,1,2,cziDbvn
+0x78,SEI,IMP,1,2,czIdbvn
+0xaa,TAX,IMP,1,2,cZidbvN
+0x8a,TXA,IMP,1,2,cZidbvN
+0xa8,TAY,IMP,1,2,cZidbvN
+0x98,TYA,IMP,1,2,cZidbvN
+0xba,TSX,IMP,1,2,cZidbvN
+0x9a,TXS,IMP,1,2,czidbvn
+
+0xc9,CMP,IMM,2,2,CZidbvN
+0xc5,CMP,ZP,2,3,CZidbvN
+0xd5,CMP,ZPX,2,4,CZidbvN
+0xcd,CMP,ABS,3,4,CZidbvN
+0xdd,CMP,ABSX,3,4,CZidbvN
+0xd9,CMP,ABSY,3,4,CZidbvN
+0xc1,CMP,INDX,2,6,CZidbvN
+0xd1,CMP,INDY,2,5,CZidbvN
+
+0xe0,CPX,IMM,2,2,CZidbvN
+0xe4,CPX,ZP,2,3,CZidbvN
+0xec,CPX,ABS,3,4,CZidbvN
+
+0xc0,CPY,IMM,2,2,CZidbvN
+0xc4,CPY,ZP,2,3,CZidbvN
+0xcc,CPY,ABS,3,4,CZidbvN
+
+0xc6,DEC,ZP,2,5,cZidbvN
+0xd6,DEC,ZPX,2,6,cZidbvN
+0xce,DEC,ABS,3,6,cZidbvN
+0xde,DEC,ABSX,3,7,cZidbvN
+
+0xca,DEX,IMP,1,2,cZidbvN
+0x88,DEY,IMP,1,2,cZidbvN
+0xe8,INX,IMP,1,2,cZidbvN
+0xc8,INY,IMP,1,2,cZidbvN
+
+0x49,EOR,IMM,2,2,cZidbvN
+0x45,EOR,ZP,2,3,cZidbvN
+0x55,EOR,ZPX,2,4,cZidbvN
+0x4d,EOR,ABS,3,4,cZidbvN
+0x5d,EOR,ABSX,3,4,cZidbvN
+0x59,EOR,ABSY,3,4,cZidbvN
+0x41,EOR,INDX,2,6,cZidbvN
+0x51,EOR,INDY,2,5,cZidbvN
+
+0xe6,INC,ZP,2,5,cZidbvN
+0xf6,INC,ZPX,2,6,cZidbvN
+0xee,INC,ABS,3,6,cZidbvN
+0xfe,INC,ABSX,3,7,cZidbvN
+
+0x4c,JMP,ABS,3,3,czidbvn
+0x6c,JMP,IND,3,5,czidbvn
+0x20,JSR,ABS,3,6,czidbvn
+
+0xa9,LDA,IMM,2,2,cZidbvN
+0xa5,LDA,ZP,2,3,cZidbvN
+0xb5,LDA,ZPX,2,4,cZidbvN
+0xad,LDA,ABS,3,4,cZidbvN
+0xbd,LDA,ABSX,3,4,cZidbvN
+0xb9,LDA,ABSY,3,4,cZidbvN
+0xa1,LDA,INDX,2,6,cZidbvN
+0xb1,LDA,INDY,2,5,cZidbvN
+
+0xa2,LDX,IMM,2,2,cZidbvN
+0xa6,LDX,ZP,2,3,cZidbvN
+0xb6,LDX,ZPY,2,4,cZidbvN
+0xae,LDX,ABS,3,4,cZidbvN
+0xbe,LDX,ABSY,3,4,cZidbvN
+
+0xa0,LDY,IMM,2,2,cZidbvN
+0xa4,LDY,ZP,2,3,cZidbvN
+0xb4,LDY,ZPX,2,4,cZidbvN
+0xac,LDY,ABS,3,4,cZidbvN
+0xbc,LDY,ABSX,3,4,cZidbvN
+
+0x4a,LSR,ACC,1,2,CZidbvN
+0x46,LSR,ZP,2,5,CZidbvN
+0x56,LSR,ZPX,2,6,CZidbvN
+0x4e,LSR,ABS,3,6,CZidbvN
+0x5e,LSR,ABSX,3,7,CZidbvN
+
+0x09,ORA,IMM,2,2,cZidbvN
+0x05,ORA,ZP,2,3,cZidbvN
+0x15,ORA,ZPX,2,4,cZidbvN
+0x0d,ORA,ABS,3,4,cZidbvN
+0x1d,ORA,ABSX,3,4,cZidbvN
+0x19,ORA,ABSY,3,4,cZidbvN
+0x01,ORA,INDX,2,6,cZidbvN
+0x11,ORA,INDY,2,5,cZidbvN
+
+0x2a,ROL,ACC,1,2,CZidbvN
+0x26,ROL,ZP,2,5,CZidbvN
+0x36,ROL,ZPX,2,6,CZidbvN
+0x2e,ROL,ABS,3,6,CZidbvN
+0x3e,ROL,ABSX,3,7,CZidbvN
+
+0x6a,ROR,ACC,1,2,CZidbvN
+0x66,ROR,ZP,2,5,CZidbvN
+0x76,ROR,ZPX,2,6,CZidbvN
+0x7e,ROR,ABS,3,6,CZidbvN
+0x6e,ROR,ABSX,3,7,CZidbvN
+
+0xe9,SBC,IMM,2,2,CZidbVN
+0xe5,SBC,ZP,2,3,CZidbVN
+0xf5,SBC,ZPX,2,4,CZidbVN
+0xed,SBC,ABS,3,4,CZidbVN
+0xfd,SBC,ABSX,3,4,CZidbVN
+0xf9,SBC,ABSY,3,4,CZidbVN
+0xe1,SBC,INDX,2,6,CZidbVN
+0xf1,SBC,INDY,2,5,CZidbVN
+
+0x85,STA,ZP,2,3,czidbvn
+0x95,STA,ZPX,2,4,czidbvn
+0x8d,STA,ABS,3,4,czidbvn
+0x9d,STA,ABSX,3,5,czidbvn
+0x99,STA,ABSY,3,5,czidbvn
+0x81,STA,INDX,2,6,czidbvn
+0x91,STA,INDY,2,6,czidbvn
+
+0x86,STX,ZP,2,3,czidbvn
+0x96,STX,ZPY,2,4,czidbvn
+0x8e,STX,ABS,3,4,czidbvn
+0x84,STY,ZP,2,3,czidbvn
+0x94,STY,ZPX,2,4,czidbvn
+0x8c,STY,ABS,3,4,czidbvn
+

data/generate_disassembler.py

@@ -0,0 +1,61 @@
+import csv
+
+with open('disassembler.c','w') as outfile:
+
+    with open('6502_ops.csv','r') as file:
+        reader = csv.DictReader(file)
+        for op in reader:
+            print(op)
+            args = int(op['bytes'])
+
+            addr_mode = op['addressing mode']
+            suffix = '_'+ addr_mode if addr_mode != 'IMP' else ''
+            mnemonic = op['mnemonic']
+            name = mnemonic + suffix
+
+            outfile.write('case %s: ' % name)
+            outfile.write('sprintf(op, ')
+            if(addr_mode == 'IMP'):
+                outfile.write('"%s"' % mnemonic)
+            else: #all other addressing modes use name + suffix
+                outfile.write('"%s ' % mnemonic)    
+                if(addr_mode == 'IMM'):
+                    outfile.write('#$%02X')
+                elif(addr_mode == 'ACC'):
+                    outfile.write("A")
+                elif(addr_mode.startswith('ZP')):
+                    outfile.write("$%02X")
+                    if(addr_mode == 'ZPX'):
+                        outfile.write(",X")
+                    if(addr_mode == 'ZPY'):
+                        outfile.write(",Y")
+                elif(addr_mode.startswith('ABS')):
+                    outfile.write("$%02X%02X")
+                    if(addr_mode == 'ABSX'):
+                        outfile.write(",X")
+                    if(addr_mode == 'ABSY'):
+                        outfile.write(",Y")
+                elif(addr_mode == 'IND'):
+                    outfile.write("($%02X%02X)")
+                elif(addr_mode == 'INDX'):
+                    outfile.write("($%02X,X)")
+                elif(addr_mode == 'INDY'):
+                    outfile.write("($%02X),Y")
+                elif(addr_mode == 'REL'):
+                    outfile.write("$%02X")
+                #end format string
+                outfile.write("\"")
+                
+                #append bytes, reversed as of little endian
+                if(args > 2):
+                    outfile.write(", code[2]")
+                if(args > 1):
+                    outfile.write(", code[1]")
+                
+            outfile.write(');')
+            if(args > 1):
+                outfile.write("bytes = %s;" % args)
+            #sprintf(op, "%s"' % ())
+            #outfile.write('#define %s %s' % (name, op['opcode']))
+            outfile.write('break;')
+            outfile.write('\n')

data/generate_opcodes.py

@@ -0,0 +1,13 @@
+import csv
+
+with open('opcodes.h','w') as outfile:
+    with open('6502_ops.csv','r') as file:
+        reader = csv.DictReader(file)
+        for op in reader:
+            print(op)
+            addr_mode = op['addressing mode']
+            suffix = '_'+ addr_mode if addr_mode != 'IMP' else ''
+            name = op['mnemonic'] + suffix
+
+            outfile.write('#define %s %s' % (name, op['opcode']))
+            outfile.write('\n')