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Tidy instruction comments a little on the 6809

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Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
This commit is contained in:
Adrian Conlon 2018-08-23 09:22:17 +01:00
parent 224c254223
commit 6af8641b45
1 changed files with 24 additions and 24 deletions
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48
MC6809/src/mc6809.cpp
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@ -117,7 +117,7 @@ int EightBit::mc6809::executeUnprefixed(uint8_t opcode) {
case 0xf5: addCycles(5); andr(B(), AM_extended_byte()); break; // BIT (BITB extended)
// CLR
case 0x0f: addCycles(6); BUS().write(Address_direct(), clr()); break; // CLR (CLR direct)
case 0x0f: addCycles(6); BUS().write(Address_direct(), clr()); break; // CLR (direct)
case 0x4f: addCycles(2); A() = clr(); break; // CLR (CLRA implied)
case 0x5f: addCycles(2); B() = clr(); break; // CLR (CLRB implied)
case 0x6f: addCycles(6); BUS().write(Address_indexed(), clr()); break; // CLR (indexed)
@ -193,9 +193,9 @@ int EightBit::mc6809::executeUnprefixed(uint8_t opcode) {
case 0x7e: addCycles(7); jump(Address_extended()); break; // JMP (extended)
// JSR
case 0x9d: addCycles(6); call(Address_direct()); break; // JSR (JSR direct)
case 0xad: addCycles(6); call(Address_indexed()); break; // JSR (JSR indexed)
case 0xbd: addCycles(7); call(Address_extended()); break; // JSR (JSR extended)
case 0x9d: addCycles(6); call(Address_direct()); break; // JSR (direct)
case 0xad: addCycles(6); call(Address_indexed()); break; // JSR (indexed)
case 0xbd: addCycles(7); call(Address_extended()); break; // JSR (extended)
// LD
@ -295,10 +295,10 @@ int EightBit::mc6809::executeUnprefixed(uint8_t opcode) {
case 0x76: addCycles(7); BUS().write(ror(AM_extended_byte())); break; // ROR (extended)
// RTI
case 0x3B: addCycles(6); rti(); break; // RTI (RTI inherent)
case 0x3B: addCycles(6); rti(); break; // RTI (inherent)
// RTS
case 0x39: addCycles(5); rts(); break; // RTS (RTS inherent)
case 0x39: addCycles(5); rts(); break; // RTS (inherent)
// SBC
@ -315,7 +315,7 @@ int EightBit::mc6809::executeUnprefixed(uint8_t opcode) {
case 0xf2: addCycles(5); break; // SBC (SBCB extended)
// SEX
case 0x1d: addCycles(2); rts(); break; // RTS (RTS inherent)
case 0x1d: addCycles(2); break; // SEX (inherent)
// ST
@ -384,24 +384,24 @@ int EightBit::mc6809::executeUnprefixed(uint8_t opcode) {
case 0x16: addCycles(5); jump(Address_relative_word()); break; // BRA (LBRA relative)
case 0x17: addCycles(9); call(Address_relative_word()); break; // BSR (LBSR relative)
case 0x20: addCycles(3); jump(Address_relative_byte()); break; // BRA (BRA relative)
case 0x21: addCycles(3); Address_relative_byte(); break; // BRN (BRN relative)
case 0x22: addCycles(3); branchShort(BHI()); break; // BHI (BHI relative)
case 0x23: addCycles(3); branchShort(BLS()); break; // BLS (BLS relative)
case 0x24: addCycles(3); branchShort(!carry()); break; // BCC (BCC relative)
case 0x25: addCycles(3); branchShort(carry()); break; // BCS (BCS relative)
case 0x26: addCycles(3); branchShort(!zero()); break; // BNE (BNE relative)
case 0x27: addCycles(3); branchShort(zero()); break; // BEQ (BEQ relative)
case 0x28: addCycles(3); branchShort(!overflow()); break; // BVC (BVC relative)
case 0x29: addCycles(3); branchShort(overflow()); break; // BVS (BVS relative)
case 0x2a: addCycles(3); branchShort(!negative()); break; // BPL (BPL relative)
case 0x2b: addCycles(3); branchShort(negative()); break; // BMI (BMI relative)
case 0x2c: addCycles(3); branchShort(BGE()); break; // BGE (BGE relative)
case 0x2d: addCycles(3); branchShort(BLT()); break; // BLT (BLT relative)
case 0x2e: addCycles(3); branchShort(BGT()); break; // BGT (BGT relative)
case 0x2f: addCycles(3); branchShort(BLE()); break; // BLE (BLE relative)
case 0x20: addCycles(3); jump(Address_relative_byte()); break; // BRA (relative)
case 0x21: addCycles(3); Address_relative_byte(); break; // BRN (relative)
case 0x22: addCycles(3); branchShort(BHI()); break; // BHI (relative)
case 0x23: addCycles(3); branchShort(BLS()); break; // BLS (relative)
case 0x24: addCycles(3); branchShort(!carry()); break; // BCC (relative)
case 0x25: addCycles(3); branchShort(carry()); break; // BCS (relative)
case 0x26: addCycles(3); branchShort(!zero()); break; // BNE (relative)
case 0x27: addCycles(3); branchShort(zero()); break; // BEQ (relative)
case 0x28: addCycles(3); branchShort(!overflow()); break; // BVC (relative)
case 0x29: addCycles(3); branchShort(overflow()); break; // BVS (relative)
case 0x2a: addCycles(3); branchShort(!negative()); break; // BPL (relative)
case 0x2b: addCycles(3); branchShort(negative()); break; // BMI (relative)
case 0x2c: addCycles(3); branchShort(BGE()); break; // BGE (relative)
case 0x2d: addCycles(3); branchShort(BLT()); break; // BLT (relative)
case 0x2e: addCycles(3); branchShort(BGT()); break; // BGT (relative)
case 0x2f: addCycles(3); branchShort(BLE()); break; // BLE (relative)
case 0x8d: addCycles(7); call(Address_relative_byte()); break; // BSR (BSR relative)
case 0x8d: addCycles(7); call(Address_relative_byte()); break; // BSR (relative)
default:
UNREACHABLE;