diff --git a/InstructionSets/M68k/Executor.hpp b/InstructionSets/M68k/Executor.hpp
index b2abd9c61..9f38c7b23 100644
--- a/InstructionSets/M68k/Executor.hpp
+++ b/InstructionSets/M68k/Executor.hpp
@@ -46,6 +46,7 @@ template <Model model, typename BusHandler> class Executor {
 		void decline_branch() {}
 		void did_update_status();
 		void bsr(uint32_t offset);
+		void jsr(uint32_t offset);
 
 		// TODO: ownership of this shouldn't be here.
 		struct Registers {
diff --git a/InstructionSets/M68k/Implementation/ExecutorImplementation.hpp b/InstructionSets/M68k/Implementation/ExecutorImplementation.hpp
index 683512f91..1f30d5cf3 100644
--- a/InstructionSets/M68k/Implementation/ExecutorImplementation.hpp
+++ b/InstructionSets/M68k/Implementation/ExecutorImplementation.hpp
@@ -371,6 +371,13 @@ void Executor<model, BusHandler>::bsr(uint32_t offset) {
 	program_counter_.l = instruction_address_ + offset;
 }
 
+template <Model model, typename BusHandler>
+void Executor<model, BusHandler>::jsr(uint32_t address) {
+	address_[7].l -= 4;
+	bus_handler_.template write<uint32_t>(address_[7].l, program_counter_.l);
+	program_counter_.l = address;
+}
+
 }
 }
 
diff --git a/InstructionSets/M68k/Implementation/PerformImplementation.hpp b/InstructionSets/M68k/Implementation/PerformImplementation.hpp
index c72e45be8..ae1b5d5c8 100644
--- a/InstructionSets/M68k/Implementation/PerformImplementation.hpp
+++ b/InstructionSets/M68k/Implementation/PerformImplementation.hpp
@@ -408,6 +408,11 @@ template <
 			flow_controller.set_pc(src.l);
 		break;
 
+		// JSR: jump to EA(0), pushing the current PC to the stack.
+		case Operation::JSR:
+			flow_controller.jsr(src.l);
+		break;
+
 		/*
 			MOVE.b, MOVE.l and MOVE.w: move the least significant byte or word, or the entire long word,
 			and set negative, zero, overflow and carry as appropriate.
diff --git a/InstructionSets/M68k/Instruction.hpp b/InstructionSets/M68k/Instruction.hpp
index ff484f148..19e16d4ed 100644
--- a/InstructionSets/M68k/Instruction.hpp
+++ b/InstructionSets/M68k/Instruction.hpp
@@ -260,9 +260,10 @@ template <Model model, Operation t_operation = Operation::Undefined> uint8_t ope
 
 		//
 		//	No operands are fetched or stored.
+		//	(which means that source and destination will appear as their effective addresses)
 		//
-		case Operation::LEA:
-		case Operation::PEA:
+		case Operation::LEA:	case Operation::PEA:
+		case Operation::JMP:	case Operation::JSR:
 			return 0;
 
 		//
@@ -291,6 +292,7 @@ template <Model model, Operation t_operation = Operation::Undefined> uint8_t ope
 		case Operation::NEGb:		case Operation::NEGw:		case Operation::NEGl:
 		case Operation::NEGXb:		case Operation::NEGXw:		case Operation::NEGXl:
 		case Operation::EXTbtow:	case Operation::EXTwtol:
+		case Operation::SWAP:
 			return FetchOp1 | StoreOp1;
 
 		//
@@ -331,6 +333,8 @@ template <Model model, Operation t_operation = Operation::Undefined> uint8_t ope
 		case Operation::ORb:	case Operation::ORw:	case Operation::ORl:
 		case Operation::ANDb:	case Operation::ANDw:	case Operation::ANDl:
 		case Operation::EORb:	case Operation::EORw:	case Operation::EORl:
+		case Operation::DIVU:	case Operation::DIVS:
+		case Operation::MULU:	case Operation::MULS:
 			return FetchOp1 | FetchOp2 | StoreOp2;
 
 //		case Operation::MOVEMw:
diff --git a/OSBindings/Mac/Clock SignalTests/68000ComparativeTests.mm b/OSBindings/Mac/Clock SignalTests/68000ComparativeTests.mm
index e8befd407..3ea04e089 100644
--- a/OSBindings/Mac/Clock SignalTests/68000ComparativeTests.mm	
+++ b/OSBindings/Mac/Clock SignalTests/68000ComparativeTests.mm	
@@ -36,13 +36,24 @@
 //	addq_subq
 //	addx_subx
 //	bcc
+//	cmp
+//	dbcc_scc
+//	eori_andi_ori
 
-// Skipped for now:
+// Skipped for now, for implying a more granular decoder:
+//
 //	btst_bchg_bclr_bset
+//	chk
+//
+// And for uncertainty around the test result status register correctness:
+//
+//	divu_divs
+//	eor_and_or	(which invokes BCD)
+//	exg			(also BCD)
 
 - (void)setUp {
 	// To limit tests run to a subset of files and/or of tests, uncomment and fill in below.
-	_fileSet = [NSSet setWithArray:@[@"chk.json"]];
+	_fileSet = [NSSet setWithArray:@[@"ext.json", @"jmp_jsr.json"]];
 //	_testSet = [NSSet setWithArray:@[@"Bcc 6206"]];
 //	_fileSet = [NSSet setWithArray:@[@"jmp_jsr.json"]];
 //	_testSet = [NSSet setWithArray:@[@"CHK 41a8"]];