diff --git a/src/lr35902/emitter-lr35902.h b/src/lr35902/emitter-lr35902.h
index e27ad41c5..80433b9a9 100644
--- a/src/lr35902/emitter-lr35902.h
+++ b/src/lr35902/emitter-lr35902.h
@@ -14,23 +14,23 @@
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDBC), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDBC_A), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, INCBC), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INCB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DECB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDB_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, DECBC), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INCC), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DECC), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDC_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDDE), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDDE_A), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, INCDE), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INCD), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DECD), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDD_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
@@ -38,40 +38,40 @@
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, DECDE), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INCE), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DECE), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDE_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, JRNZ), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDHL), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDIHLA), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, INCHL), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INCH), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DECH), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDH_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, JRZ), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, DECHL), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INCL), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DECL), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDL_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, JRNC), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDSP), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDDHLA), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, INCSP), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INC_HL), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DEC_HL), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDHL_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, JRC), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, DECSP), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, INCA), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, DECA), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDA_), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDB_B), \
@@ -243,7 +243,7 @@
 	DECLARE_INSTRUCTION_LR35902(EMITTER, AND), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
-	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
+	DECLARE_INSTRUCTION_LR35902(EMITTER, JPHL), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, LDIA), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
 	DECLARE_INSTRUCTION_LR35902(EMITTER, STUB), \
diff --git a/src/lr35902/isa-lr35902.c b/src/lr35902/isa-lr35902.c
index f81ff6b9b..2ffebf534 100644
--- a/src/lr35902/isa-lr35902.c
+++ b/src/lr35902/isa-lr35902.c
@@ -43,6 +43,10 @@ DEFINE_INSTRUCTION_LR35902(JPDelay,
 
 DEFINE_CONDITIONAL_INSTRUCTION_LR35902(JP);
 
+DEFINE_INSTRUCTION_LR35902(JPHL,
+	cpu->pc = LR35902ReadHL(cpu);
+	cpu->memory.setActiveRegion(cpu, cpu->pc);)
+
 DEFINE_INSTRUCTION_LR35902(JRFinish,
 	if (cpu->condition) {
 		cpu->pc += (int8_t) cpu->bus;
@@ -360,7 +364,7 @@ DEFINE_INSTRUCTION_LR35902(LDIOA, \
 	cpu->executionState = LR35902_CORE_READ_PC; \
 	cpu->instruction = _LR35902InstructionLDIOADelay;)
 
-#define DEFINE_INCDEC_INSTRUCTION_LR35902(REG) \
+#define DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(REG) \
 	DEFINE_INSTRUCTION_LR35902(INC ## REG, \
 		uint16_t reg = LR35902Read ## REG (cpu); \
 		LR35902Write ## REG (cpu, reg + 1); \
@@ -370,9 +374,57 @@ DEFINE_INSTRUCTION_LR35902(LDIOA, \
 		LR35902Write ## REG (cpu, reg - 1); \
 		cpu->executionState = LR35902_CORE_STALL;)
 
-DEFINE_INCDEC_INSTRUCTION_LR35902(BC);
-DEFINE_INCDEC_INSTRUCTION_LR35902(DE);
-DEFINE_INCDEC_INSTRUCTION_LR35902(HL);
+DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(BC);
+DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(DE);
+DEFINE_INCDEC_WIDE_INSTRUCTION_LR35902(HL);
+
+
+#define DEFINE_INC_INSTRUCTION_LR35902(NAME, OPERAND) \
+	DEFINE_INSTRUCTION_LR35902(INC ## NAME, \
+		int diff = OPERAND + 1; \
+		OPERAND = diff; \
+		cpu->f.n = 0; \
+		cpu->f.z = !diff; \
+		/* TODO: Find explanation of H flag */)
+
+#define DEFINE_DEC_INSTRUCTION_LR35902(NAME, OPERAND) \
+	DEFINE_INSTRUCTION_LR35902(DEC ## NAME, \
+		int diff = OPERAND - 1; \
+		OPERAND = diff; \
+		cpu->f.n = 1; \
+		cpu->f.z = !diff; \
+		/* TODO: Find explanation of H flag */)
+
+DEFINE_ALU_INSTRUCTION_LR35902_NOHL(INC);
+DEFINE_ALU_INSTRUCTION_LR35902_NOHL(DEC);
+
+DEFINE_INSTRUCTION_LR35902(INC_HLDelay,
+	int diff = cpu->bus + 1;
+	cpu->bus = diff;
+	cpu->f.n = 0;
+	cpu->f.z = !diff;
+	/* TODO: Find explanation of H flag */
+	cpu->instruction = _LR35902InstructionNOP;
+	cpu->executionState = LR35902_CORE_MEMORY_STORE;)
+
+DEFINE_INSTRUCTION_LR35902(INC_HL,
+	cpu->index = LR35902ReadHL(cpu);
+	cpu->instruction = _LR35902InstructionINC_HLDelay;
+	cpu->executionState = LR35902_CORE_MEMORY_LOAD;)
+
+DEFINE_INSTRUCTION_LR35902(DEC_HLDelay,
+	int diff = cpu->bus - 1;
+	cpu->bus = diff;
+	cpu->f.n = 1;
+	cpu->f.z = !diff;
+	/* TODO: Find explanation of H flag */
+	cpu->instruction = _LR35902InstructionNOP;
+	cpu->executionState = LR35902_CORE_MEMORY_STORE;)
+
+DEFINE_INSTRUCTION_LR35902(DEC_HL,
+	cpu->index = LR35902ReadHL(cpu);
+	cpu->instruction = _LR35902InstructionDEC_HLDelay;
+	cpu->executionState = LR35902_CORE_MEMORY_LOAD;)
 
 DEFINE_INSTRUCTION_LR35902(INCSP,
 	++cpu->sp;