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6809.py
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6809.py
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##########################################################################
#
# Processor specific code
# CPU = "6809"
# Description = "Motorola 6809 8-bit microprocessor."
# DataWidth = 8 # 8-bit data
# AddressWidth = 16 # 16-bit addresses
if dir().count("pcr") == 0:
pcr = 1
# Maximum length of an instruction (for formatting purposes)
maxLength = 4
# Leadin bytes for multbyte instructions
leadInBytes = [0x10, 0x11]
# Notes:
# Not all addressing modes are implemented.
# Addressing mode table
addressModeTable = {
"inherent" : "",
"imm8" : "#${0:02X}",
"imm16" : "#${0:02X}{1:02X}",
"direct" : "${0:02X}",
"indexed" : "${0:02X},x",
"extended" : "${0:02X}{1:02X}",
"rel8" : "${0:04X}",
"rel16" : "${0:04X}",
"r1,r2" : "${0:02X}", # Not fully implemented
# Extended Indirect
# Relative Indirect
# Zero-offset Indexed
# Zero-offset Indexed Indirect
# Constant-offset Indexed
# Constant-offset Indexed Indirect
# Accumulator-offset Indexed
# Accumulator-offset Indexed Indirect
# Auto-Increment Indexed
# Auto-Increment Indexed Indirect
# Auto-Decrement Indexed
# Auto-Decrement Indexed Indirect
}
# Op Code Table
# Key is numeric opcode (possibly multiple bytes)
# Value is a list:
# # bytes
# mnemonic
# addressing mode.
# flags (e.g. pcr)
opcodeTable = {
0x3a : [ 1, "abx", "inherent" ],
0x89 : [ 2, "adca", "imm8" ],
0x99 : [ 2, "adca", "direct" ],
0xa9 : [ 2, "adca", "indexed" ],
0xb9 : [ 3, "adca", "extended" ],
0xc9 : [ 2, "adcb", "imm8" ],
0xd9 : [ 2, "adcb", "direct" ],
0xe9 : [ 2, "adcb", "indexed" ],
0xf9 : [ 3, "adcb", "extended" ],
0x8b : [ 2, "adda", "imm8" ],
0x9b : [ 2, "adda", "direct" ],
0xab : [ 2, "adda", "indexed" ],
0xbb : [ 3, "adda", "extended" ],
0xcb : [ 2, "addb", "imm8" ],
0xdb : [ 2, "addb", "direct" ],
0xeb : [ 2, "addb", "indexed" ],
0xfb : [ 3, "addb", "extended" ],
0xc3 : [ 3, "addd", "imm16" ],
0xd3 : [ 2, "addd", "direct" ],
0xe3 : [ 2, "addd", "indexed" ],
0xf3 : [ 3, "addd", "extended" ],
0x84 : [ 2, "anda", "imm8" ],
0x94 : [ 2, "anda", "direct" ],
0xa4 : [ 2, "anda", "indexed" ],
0xb4 : [ 3, "anda", "extended" ],
0xc4 : [ 2, "andb", "imm8" ],
0xd4 : [ 2, "andb", "direct" ],
0xe4 : [ 2, "andb", "indexed" ],
0xf4 : [ 3, "andb", "extended" ],
0x1c : [ 2, "andcc","imm8" ],
0x48 : [ 1, "asla", "inherent" ],
0x58 : [ 1, "aslb", "inherent" ],
0x08 : [ 2, "asl", "direct" ],
0x68 : [ 2, "asl", "indexed" ],
0x78 : [ 3, "asl", "extended" ],
0x47 : [ 1, "asra", "inherent" ],
0x57 : [ 1, "asrb", "inherent" ],
0x07 : [ 2, "asr", "direct" ],
0x67 : [ 2, "asr", "indexed" ],
0x77 : [ 3, "asr", "extended" ],
0x85 : [ 2, "bita", "imm8" ],
0x95 : [ 2, "bita", "direct" ],
0xa5 : [ 2, "bita", "indexed" ],
0xb5 : [ 3, "bita", "extended" ],
0xc5 : [ 2, "bitb", "imm8" ],
0xd5 : [ 2, "bitb", "direct" ],
0xe5 : [ 2, "bitb", "indexed" ],
0xf5 : [ 3, "bitb", "extended" ],
0x4f : [ 1, "clra", "inherent" ],
0x5f : [ 1, "clrb", "inherent" ],
0x0f : [ 2, "clr", "direct" ],
0x6f : [ 2, "clr", "indexed" ],
0x7f : [ 3, "clr", "extended" ],
0x81 : [ 2, "cmpa", "imm8" ],
0x91 : [ 2, "cmpa", "direct" ],
0xa1 : [ 2, "cmpa", "indexed" ],
0xb1 : [ 3, "cmpa", "extended" ],
0xc1 : [ 2, "cmpb", "imm8" ],
0xd1 : [ 2, "cmpb", "direct" ],
0xe1 : [ 2, "cmpb", "indexed" ],
0xf1 : [ 3, "cmpb", "extended" ],
0x1083 : [ 4, "cmpd", "imm16" ],
0x1093 : [ 3, "cmpd", "direct" ],
0x10a3 : [ 3, "cmpd", "indexed" ],
0x10b3 : [ 4, "cmpd", "extended" ],
0x118c : [ 4, "cmps", "imm16" ],
0x119c : [ 3, "cmps", "direct" ],
0x11ac : [ 3, "cmps", "indexed" ],
0x11bc : [ 4, "cmps", "extended" ],
0x1183 : [ 4, "cmpu", "imm16" ],
0x1193 : [ 3, "cmpu", "direct" ],
0x11a3 : [ 3, "cmpu", "indexed" ],
0x11b3 : [ 4, "cmpu", "extended" ],
0x8c : [ 3, "cmpx", "imm16" ],
0x9c : [ 2, "cmpx", "direct" ],
0xac : [ 2, "cmpx", "indexed" ],
0xbc : [ 3, "cmpx", "extended" ],
0x108c : [ 4, "cmpy", "imm16" ],
0x109c : [ 3, "cmpy", "direct" ],
0x10ac : [ 3, "cmpy", "indexed" ],
0x10bc : [ 4, "cmpy", "extended" ],
0x43 : [ 1, "coma", "inherent" ],
0x53 : [ 1, "comb", "inherent" ],
0x03 : [ 2, "comb", "direct" ],
0x63 : [ 2, "comb", "indexed" ],
0x73 : [ 3, "comb", "extended" ],
0x3c : [ 2, "cwai", "imm8" ],
0x19 : [ 1, "daa", "inherent" ],
0x4a : [ 1, "deca", "inherent" ],
0x5a : [ 1, "decb", "inherent" ],
0x0a : [ 2, "dec", "direct" ],
0x6a : [ 2, "dec", "indexed" ],
0x7a : [ 3, "dec", "extended" ],
0x88 : [ 2, "eora", "imm8" ],
0x98 : [ 2, "eora", "direct" ],
0xa8 : [ 2, "eora", "direct" ],
0xb8 : [ 3, "eora", "extended" ],
0xc8 : [ 2, "eorb", "imm8" ],
0xd8 : [ 2, "eorb", "direct" ],
0xe8 : [ 2, "eorb", "direct" ],
0xf8 : [ 3, "eorb", "extended" ],
0x1e : [ 2, "exg", "r1,r2" ],
0x4c : [ 1, "inca", "inherent" ],
0x5c : [ 1, "incb", "inherent" ],
0x0c : [ 2, "inc", "indexed" ],
0x6c : [ 2, "inc", "direct" ],
0x7c : [ 3, "inc", "extended" ],
0x0e : [ 2, "jmp", "indexed" ],
0x6e : [ 2, "jmp", "direct" ],
0x7e : [ 3, "jmp", "extended" ],
0x9d : [ 2, "jsr", "indexed" ],
0xad : [ 2, "jsr", "direct" ],
0xbd : [ 3, "jsr", "extended" ],
0x86 : [ 2, "lda", "imm8" ],
0x96 : [ 2, "lda", "direct" ],
0xa6 : [ 2, "lda", "indexed" ],
0xb6 : [ 3, "lda", "extended" ],
0xc6 : [ 2, "ldb", "imm8" ],
0xd6 : [ 2, "ldb", "direct" ],
0xe6 : [ 2, "ldb", "indexed" ],
0xf6 : [ 3, "ldb", "extended" ],
0xcc : [ 3, "ldd", "imm16" ],
0xdc : [ 2, "ldd", "direct" ],
0xec : [ 2, "ldd", "indexed" ],
0xfc : [ 3, "ldd", "extended" ],
0x10ce : [ 4, "lds", "imm16" ],
0x10de : [ 3, "lds", "direct" ],
0x10ee : [ 3, "lds", "indexed" ],
0x10fe : [ 4, "lds", "extended" ],
0xce : [ 3, "ldu", "imm16" ],
0xde : [ 2, "ldu", "direct" ],
0xee : [ 2, "ldu", "indexed" ],
0xfe : [ 3, "ldu", "extended" ],
0x8e : [ 3, "ldx", "imm16" ],
0x9e : [ 2, "ldx", "direct" ],
0xae : [ 2, "ldx", "indexed" ],
0xbe : [ 3, "ldx", "extended" ],
0x108e : [ 4, "ldy", "imm16" ],
0x109e : [ 3, "ldy", "direct" ],
0x10ae : [ 3, "ldy", "indexed" ],
0x10be : [ 4, "ldy", "extended" ],
0x32 : [ 2, "leas", "indexed" ],
0x33 : [ 2, "leau", "indexed" ],
0x30 : [ 2, "leax", "indexed" ],
0x31 : [ 2, "leay", "indexed" ],
0x48 : [ 1, "lsla", "inherent" ],
0x58 : [ 1, "lslb", "inherent" ],
0x08 : [ 2, "lsl", "direct" ],
0x68 : [ 2, "lsl", "indexed" ],
0x78 : [ 3, "lsl", "extended" ],
0x44 : [ 1, "lsra", "inherent" ],
0x54 : [ 1, "lsrb", "inherent" ],
0x04 : [ 2, "lsr", "direct" ],
0x64 : [ 2, "lsr", "indexed" ],
0x74 : [ 3, "lsr", "extended" ],
0x3d : [ 1, "mul", "inherent" ],
0x40 : [ 1, "nega", "inherent" ],
0x50 : [ 1, "negb", "inherent" ],
0x00 : [ 2, "neg", "direct" ],
0x60 : [ 2, "neg", "indexed" ],
0x70 : [ 3, "neg", "extended" ],
0x12 : [ 1, "nop", "inherent" ],
0x8a : [ 2, "ora", "imm8" ],
0x9a : [ 2, "ora", "direct" ],
0xaa : [ 2, "ora", "indexed" ],
0xba : [ 3, "ora", "extended" ],
0xca : [ 2, "orb", "imm8" ],
0xda : [ 2, "orb", "direct" ],
0xea : [ 2, "orb", "indexed" ],
0xfa : [ 3, "orb", "extended" ],
0x1a : [ 2, "orcc", "imm8" ],
0x34 : [ 2, "pshs", "imm8" ],
0x36 : [ 2, "pshu", "imm8" ],
0x35 : [ 2, "puls", "imm8" ],
0x37 : [ 2, "pulu", "imm8" ],
0x49 : [ 1, "rola", "inherent" ],
0x59 : [ 1, "rolb", "inherent" ],
0x09 : [ 2, "rol", "direct" ],
0x69 : [ 2, "rol", "indexed" ],
0x79 : [ 3, "rol", "extended" ],
0x46 : [ 1, "rora", "inherent" ],
0x56 : [ 1, "rorb", "inherent" ],
0x06 : [ 2, "ror", "direct" ],
0x66 : [ 2, "ror", "indexed" ],
0x76 : [ 3, "ror", "extended" ],
0x3b : [ 1, "rti", "inherent" ],
0x39 : [ 1, "rts", "inherent" ],
0x82 : [ 2, "sbca", "imm8" ],
0x92 : [ 2, "sbca", "direct" ],
0xa2 : [ 2, "sbca", "indexed" ],
0xb2 : [ 3, "sbca", "extended" ],
0xc2 : [ 2, "sbcb", "imm8" ],
0xd2 : [ 2, "sbcb", "direct" ],
0xe2 : [ 2, "sbcb", "indexed" ],
0xf2 : [ 3, "sbcb", "extended" ],
0x1d : [ 1, "sex", "inherent" ],
0x97 : [ 2, "sta", "direct" ],
0xa7 : [ 2, "sta", "indexed" ],
0xb7 : [ 3, "sta", "extended" ],
0xd7 : [ 2, "stb", "direct" ],
0xe7 : [ 2, "stb", "indexed" ],
0xf7 : [ 3, "stb", "extended" ],
0xdd : [ 2, "std", "direct" ],
0xed : [ 2, "std", "indexed" ],
0xfd : [ 3, "std", "extended" ],
0x10df : [ 3, "sts", "direct" ],
0x10ef : [ 3, "sts", "indexed" ],
0x10ff : [ 4, "sts", "extended" ],
0xdf : [ 2, "stu", "direct" ],
0xef : [ 2, "stu", "indexed" ],
0xff : [ 3, "stu", "extended" ],
0x9f : [ 2, "stx", "direct" ],
0xaf : [ 2, "stx", "indexed" ],
0xbf : [ 3, "stx", "extended" ],
0x109f : [ 3, "sty", "direct" ],
0x10af : [ 3, "sty", "indexed" ],
0x10bf : [ 4, "sty", "extended" ],
0x80 : [ 2, "suba", "imm8" ],
0x90 : [ 2, "suba", "direct" ],
0xa0 : [ 2, "suba", "indexed" ],
0xb0 : [ 3, "suba", "extended" ],
0xc0 : [ 2, "subb", "imm8" ],
0xd0 : [ 2, "subb", "direct" ],
0xe0 : [ 2, "subb", "indexed" ],
0xf0 : [ 3, "subb", "extended" ],
0x83 : [ 3, "subd", "imm16" ],
0x93 : [ 2, "subd", "direct" ],
0xa3 : [ 2, "subd", "indexed" ],
0xb3 : [ 3, "subd", "extended" ],
0x3f : [ 1, "swi", "inherent" ],
0x103f : [ 2, "swi2", "inherent" ],
0x113f : [ 2, "swi3", "inherent" ],
0x13 : [ 1, "sync", "inherent" ],
0x1f : [ 2, "tfr", "r1,r2" ],
0x4d : [ 1, "tsta", "inherent" ],
0x5d : [ 1, "tstb", "inherent" ],
0x0d : [ 2, "tst", "direct" ],
0x6d : [ 2, "tst", "indexed" ],
0x7d : [ 3, "tst", "extended" ],
0x24 : [ 2, "bcc", "rel8", pcr ],
0x1024 : [ 4, "lbcc", "rel16", pcr ],
0x25 : [ 2, "bcs", "rel8", pcr ],
0x1025 : [ 4, "lbcs", "rel16", pcr ],
0x27 : [ 2, "beq", "rel8", pcr ],
0x1027 : [ 4, "lbeq", "rel16", pcr ],
0x2c : [ 2, "bge", "rel8", pcr ],
0x102c : [ 4, "lbge", "rel16", pcr ],
0x2e : [ 2, "bgt", "rel8", pcr ],
0x102e : [ 4, "lbgt", "rel16", pcr ],
0x22 : [ 2, "bhi", "rel8", pcr ],
0x1022 : [ 4, "lbhi", "rel16", pcr ],
0x24 : [ 2, "bhs", "rel8", pcr ],
0x1024 : [ 4, "lbhs", "rel16", pcr ],
0x2f : [ 2, "ble", "rel8", pcr ],
0x102f : [ 4, "lble", "rel16", pcr ],
0x25 : [ 2, "blo", "rel8", pcr ],
0x1025 : [ 4, "lblo", "rel16", pcr ],
0x23 : [ 2, "bls", "rel8", pcr ],
0x1023 : [ 4, "lbls", "rel16", pcr ],
0x2d : [ 2, "blt", "rel8", pcr ],
0x102d : [ 4, "lblt", "rel16", pcr ],
0x2b : [ 2, "bmi", "rel8", pcr ],
0x102b : [ 4, "lbmi", "rel16", pcr ],
0x26 : [ 2, "bne", "rel8", pcr ],
0x1026 : [ 4, "lbne", "rel16", pcr ],
0x2a : [ 2, "bpl", "rel8", pcr ],
0x102a : [ 4, "lbpl", "rel16", pcr ],
0x20 : [ 2, "bra", "rel8", pcr ],
0x16 : [ 3, "lbra", "rel16", pcr ],
0x21 : [ 2, "brn", "rel8", pcr ],
0x1021 : [ 4, "lbrn", "rel16", pcr ],
0x8d : [ 2, "bsr", "rel8", pcr ],
0x17 : [ 3, "lbsr", "rel16", pcr ],
0x28 : [ 2, "bvc", "rel8", pcr ],
0x1028 : [ 4, "lbvc", "rel16", pcr ],
0x29 : [ 2, "bvs", "rel8", pcr ],
0x1029 : [ 4, "lbvs", "rel16", pcr ],
}
# End of processor specific code
##########################################################################