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Correct 10/11 opcode prefix disassembly on the 6809 processor.

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Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
This commit is contained in:
Adrian Conlon 2018-09-16 17:56:55 +01:00
parent 2d93087e5f
commit 54bb9743be
1 changed files with 8 additions and 13 deletions
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21
MC6809/src/Disassembly.cpp
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@ -136,17 +136,14 @@ std::string EightBit::Disassembly::disassembleUnprefixed() {
output << dump_ByteValue(opcode);
switch (opcode) {
case 0x10: m_prefix10 = true; output << disassemble(m_address + 1); break;
case 0x11: m_prefix11 = true; output << disassemble(m_address + 1); break;
}
switch (opcode) {
// ABX
case 0x3a: output << "\tABX"; break; // ABX (inherent)
//// ADC
// ADC
case 0x89: output << AM_immediate_byte("ADCA"); break; // ADC (ADCA immediate)
case 0x99: output << Address_direct("ADCA"); break; // ADC (ADCA direct)
case 0xa9: output << Address_indexed("ADCA"); break; // ADC (ADCA indexed)
@ -157,8 +154,7 @@ std::string EightBit::Disassembly::disassembleUnprefixed() {
case 0xe9: output << Address_indexed("ADCB"); break; // ADC (ADCB indexed)
case 0xf9: output << Address_extended("ADCB"); break; // ADC (ADCB extended)
//// ADD
// ADD
case 0x8b: output << Address_extended("ADDA"); break; // ADD (ADDA immediate)
case 0x9b: output << Address_direct("ADDA"); break; // ADD (ADDA direct)
case 0xab: output << Address_indexed("ADDA"); break; // ADD (ADDA indexed)
@ -174,8 +170,7 @@ std::string EightBit::Disassembly::disassembleUnprefixed() {
case 0xe3: output << Address_indexed("ADDD"); break; // ADD (ADDD indexed)
case 0xf3: output << Address_extended("ADDD"); break; // ADD (ADDD extended)
//// AND
// AND
case 0x84: output << AM_immediate_byte("ANDA"); break; // AND (ANDA immediate)
case 0x94: output << Address_direct("ANDA"); break; // AND (ANDA direct)
case 0xa4: output << Address_indexed("ANDA"); break; // AND (ANDA indexed)
@ -188,21 +183,21 @@ std::string EightBit::Disassembly::disassembleUnprefixed() {
case 0x1c: output << AM_immediate_byte("ANDCC"); break; // AND (ANDCC immediate)
//// ASL/LSL
// ASL/LSL
case 0x08: output << Address_direct("ASL"); break; // ASL (direct)
case 0x48: output << "\tASLA"; break; // ASL (ASLA inherent)
case 0x58: output << "\tASLB"; break; // ASL (ASLB inherent)
case 0x68: output << Address_indexed("ASL"); break; // ASL (indexed)
case 0x78: output << Address_extended("ASL"); break; // ASL (extended)
//// ASR
// ASR
case 0x07: output << Address_direct("ASR"); break; // ASR (direct)
case 0x47: output << "\tASRA"; break; // ASR (ASRA inherent)
case 0x57: output << "\tASRB"; break; // ASR (ASRB inherent)
case 0x67: output << Address_indexed("ASR"); break; // ASR (indexed)
case 0x77: output << Address_extended("ASR"); break; // ASR (extended)
//// BIT
// BIT
case 0x85: output << AM_immediate_byte("BITA"); break; // BIT (BITA immediate)
case 0x95: output << Address_direct("BITA"); break; // BIT (BITA direct)
case 0xa5: output << Address_indexed("BITA"); break; // BIT (BITA indexed)
@ -213,7 +208,7 @@ std::string EightBit::Disassembly::disassembleUnprefixed() {
case 0xe5: output << Address_indexed("BITB"); break; // BIT (BITB indexed)
case 0xf5: output << Address_extended("BITB"); break; // BIT (BITB extended)
//// CLR
// CLR
case 0x0f: output << Address_direct("CLR"); break; // CLR (direct)
case 0x4f: output << "\tCLRA"; break; // CLR (CLRA implied)
case 0x5f: output << "\tCLRB"; break; // CLR (CLRB implied)