Decode SALC.

InstructionSets/x86/Decoder.cpp

@@ -469,7 +469,7 @@ std::pair<int, typename Decoder<model>::InstructionT> Decoder<model>::decode(con
 			break;
 			case 0xd4: RegData(AAM, eAX, DataSize::Byte);			break;
 			case 0xd5: RegData(AAD, eAX, DataSize::Byte);			break;
-			// Unused: 0xd6.
+			case 0xd6: Complete(SALC, None, None, DataSize::Byte);	break;
 			case 0xd7: Complete(XLAT, None, None, DataSize::Byte);	break;
 
 			case 0xd8: MemRegReg(ESC, Reg_MemReg, data_size_);	break;

InstructionSets/x86/Instruction.cpp

@@ -136,6 +136,7 @@ std::string InstructionSet::x86::to_string(Operation operation, DataSize size) {
 
 		case Operation::XCHG:	return "xchg";
 		case Operation::XLAT:	return "xlat";
+		case Operation::SALC:	return "salc";
 
 		case Operation::Invalid:	return "invalid";
 

InstructionSets/x86/Instruction.hpp

@@ -211,6 +211,9 @@ enum class Operation: uint8_t {
 	/// Load AL with DS:[AL+BX].
 	XLAT,
 
+	/// Set AL to FFh if carry is set; 00h otherwise.
+	SALC,
+
 	//
 	// 80186 additions.
 	//
@@ -219,7 +222,7 @@ enum class Operation: uint8_t {
 	/// stored at the location indicated by the source register, which will point to two
 	/// 16- or 32-bit words, the first being a signed lower bound and the signed upper.
 	/// Raises a bounds exception if not.
-	BOUND,
+	BOUND = SALC,
 
 
 	/// Create stack frame. See operand() for the nesting level and offset()
@@ -415,6 +418,7 @@ constexpr int max_num_operands(Operation operation) {
 		case Operation::IRET:
 		case Operation::NOP:
 		case Operation::XLAT:
+		case Operation::SALC:
 		case Operation::Invalid:
 			return 0;
 	}

OSBindings/Mac/Clock SignalTests/8088Tests.mm

@@ -154,7 +154,6 @@ std::string to_string(
 
 			// Undocumented instructions.
 			@"D0.6.json.gz",	@"D1.6.json.gz",	@"D2.6.json.gz",	@"D3.6.json.gz",
-			@"D6.json.gz",
 
 			nil
 		];