diff --git a/ALU_top.bdf b/ALU_top.bdf
index 785f265..63139ce 100644
--- a/ALU_top.bdf
+++ b/ALU_top.bdf
@@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
 the Block Editor! File corruption is VERY likely to occur.
 */
 /*
-Copyright (C) 2019  Intel Corporation. All rights reserved.
+Copyright (C) 2018  Intel Corporation. All rights reserved.
 Your use of Intel Corporation's design tools, logic functions 
-and other software and tools, and any partner logic 
+and other software and tools, and its AMPP partner logic 
 functions, and any output files from any of the foregoing 
 (including device programming or simulation files), and any 
 associated documentation or information are expressly subject 
@@ -16,8 +16,7 @@ the Intel FPGA IP License Agreement, or other applicable license
 agreement, including, without limitation, that your use is for
 the sole purpose of programming logic devices manufactured by
 Intel and sold by Intel or its authorized distributors.  Please
-refer to the applicable agreement for further details, at
-https://fpgasoftware.intel.com/eula.
+refer to the applicable agreement for further details.
 */
 (header "graphic" (version "1.4"))
 (pin
@@ -299,8 +298,8 @@ https://fpgasoftware.intel.com/eula.
 	(port
 		(pt 0 96)
 		(input)
-		(text "opcode[5..0]" (rect 0 0 61 12)(font "Arial" ))
-		(text "opcode[5..0]" (rect 21 91 82 103)(font "Arial" ))
+		(text "instr[15..0]" (rect 0 0 53 12)(font "Arial" ))
+		(text "instr[15..0]" (rect 21 91 74 103)(font "Arial" ))
 		(line (pt 0 96)(pt 16 96)(line_width 3))
 	)
 	(port
diff --git a/ALU_top.bsf b/ALU_top.bsf
index dac5b6c..d8e24ad 100644
--- a/ALU_top.bsf
+++ b/ALU_top.bsf
@@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
 the Block Editor! File corruption is VERY likely to occur.
 */
 /*
-Copyright (C) 2019  Intel Corporation. All rights reserved.
+Copyright (C) 2018  Intel Corporation. All rights reserved.
 Your use of Intel Corporation's design tools, logic functions 
-and other software and tools, and any partner logic 
+and other software and tools, and its AMPP partner logic 
 functions, and any output files from any of the foregoing 
 (including device programming or simulation files), and any 
 associated documentation or information are expressly subject 
@@ -16,8 +16,7 @@ the Intel FPGA IP License Agreement, or other applicable license
 agreement, including, without limitation, that your use is for
 the sole purpose of programming logic devices manufactured by
 Intel and sold by Intel or its authorized distributors.  Please
-refer to the applicable agreement for further details, at
-https://fpgasoftware.intel.com/eula.
+refer to the applicable agreement for further details.
 */
 (header "symbol" (version "1.2"))
 (symbol
diff --git a/CPUProject.bdf b/CPUProject.bdf
index 9cdc317..763dfc9 100644
--- a/CPUProject.bdf
+++ b/CPUProject.bdf
@@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
 the Block Editor! File corruption is VERY likely to occur.
 */
 /*
-Copyright (C) 2019  Intel Corporation. All rights reserved.
+Copyright (C) 2018  Intel Corporation. All rights reserved.
 Your use of Intel Corporation's design tools, logic functions 
-and other software and tools, and any partner logic 
+and other software and tools, and its AMPP partner logic 
 functions, and any output files from any of the foregoing 
 (including device programming or simulation files), and any 
 associated documentation or information are expressly subject 
@@ -16,8 +16,7 @@ the Intel FPGA IP License Agreement, or other applicable license
 agreement, including, without limitation, that your use is for
 the sole purpose of programming logic devices manufactured by
 Intel and sold by Intel or its authorized distributors.  Please
-refer to the applicable agreement for further details, at
-https://fpgasoftware.intel.com/eula.
+refer to the applicable agreement for further details.
 */
 (header "graphic" (version "1.4"))
 (properties
@@ -270,7 +269,7 @@ https://fpgasoftware.intel.com/eula.
 		(pt 184 32)
 		(output)
 		(text "result[15..0]" (rect 0 0 59 12)(font "Arial" ))
-		(text "result[15..0]" (rect 114 27 163 39)(font "Arial" ))
+		(text "result[15..0]" (rect 114 27 173 39)(font "Arial" ))
 		(line (pt 184 32)(pt 168 32)(line_width 3))
 	)
 	(drawing
@@ -348,7 +347,7 @@ https://fpgasoftware.intel.com/eula.
 		(pt 184 32)
 		(output)
 		(text "result[15..0]" (rect 0 0 59 12)(font "Arial" ))
-		(text "result[15..0]" (rect 114 27 163 39)(font "Arial" ))
+		(text "result[15..0]" (rect 114 27 173 39)(font "Arial" ))
 		(line (pt 184 32)(pt 168 32)(line_width 3))
 	)
 	(drawing
@@ -426,7 +425,7 @@ https://fpgasoftware.intel.com/eula.
 		(pt 184 32)
 		(output)
 		(text "result[15..0]" (rect 0 0 59 12)(font "Arial" ))
-		(text "result[15..0]" (rect 114 27 163 39)(font "Arial" ))
+		(text "result[15..0]" (rect 114 27 173 39)(font "Arial" ))
 		(line (pt 184 32)(pt 168 32)(line_width 3))
 	)
 	(drawing
@@ -652,21 +651,21 @@ https://fpgasoftware.intel.com/eula.
 		(pt 152 32)
 		(output)
 		(text "FETCH" (rect 0 0 36 12)(font "Arial" ))
-		(text "FETCH" (rect 101 27 131 39)(font "Arial" ))
+		(text "FETCH" (rect 101 27 137 39)(font "Arial" ))
 		(line (pt 152 32)(pt 136 32))
 	)
 	(port
 		(pt 152 48)
 		(output)
 		(text "EXEC1" (rect 0 0 34 12)(font "Arial" ))
-		(text "EXEC1" (rect 103 43 131 55)(font "Arial" ))
+		(text "EXEC1" (rect 103 43 137 55)(font "Arial" ))
 		(line (pt 152 48)(pt 136 48))
 	)
 	(port
 		(pt 152 64)
 		(output)
 		(text "EXEC2" (rect 0 0 34 12)(font "Arial" ))
-		(text "EXEC2" (rect 103 59 131 71)(font "Arial" ))
+		(text "EXEC2" (rect 103 59 137 71)(font "Arial" ))
 		(line (pt 152 64)(pt 136 64))
 	)
 	(drawing
@@ -716,112 +715,13 @@ https://fpgasoftware.intel.com/eula.
 		(pt 184 32)
 		(output)
 		(text "Dout[15..0]" (rect 0 0 55 12)(font "Arial" ))
-		(text "Dout[15..0]" (rect 117 27 163 39)(font "Arial" ))
+		(text "Dout[15..0]" (rect 117 27 172 39)(font "Arial" ))
 		(line (pt 184 32)(pt 168 32)(line_width 3))
 	)
 	(drawing
 		(rectangle (rect 16 16 168 128))
 	)
 )
-(symbol
-	(rect 928 320 1184 512)
-	(text "ALU_top" (rect 5 0 56 19)(font "Intel Clear" (font_size 8)))
-	(text "ALU" (rect 8 171 28 188)(font "Intel Clear" ))
-	(port
-		(pt 0 32)
-		(input)
-		(text "ALU_en" (rect 0 0 46 19)(font "Intel Clear" (font_size 8)))
-		(text "ALU_en" (rect 21 27 67 46)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 32)(pt 16 32))
-	)
-	(port
-		(pt 0 48)
-		(input)
-		(text "Rs1[15..0]" (rect 0 0 61 19)(font "Intel Clear" (font_size 8)))
-		(text "Rs1[15..0]" (rect 21 43 82 62)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 48)(pt 16 48)(line_width 3))
-	)
-	(port
-		(pt 0 64)
-		(input)
-		(text "Rs2[15..0]" (rect 0 0 61 19)(font "Intel Clear" (font_size 8)))
-		(text "Rs2[15..0]" (rect 21 59 82 78)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 64)(pt 16 64)(line_width 3))
-	)
-	(port
-		(pt 0 80)
-		(input)
-		(text "Rd[15..0]" (rect 0 0 55 19)(font "Intel Clear" (font_size 8)))
-		(text "Rd[15..0]" (rect 21 75 76 94)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 80)(pt 16 80)(line_width 3))
-	)
-	(port
-		(pt 0 96)
-		(input)
-		(text "op[5..0]" (rect 0 0 46 19)(font "Intel Clear" (font_size 8)))
-		(text "op[5..0]" (rect 21 91 67 110)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 96)(pt 16 96)(line_width 3))
-	)
-	(port
-		(pt 0 112)
-		(input)
-		(text "EXEC2" (rect 0 0 38 19)(font "Intel Clear" (font_size 8)))
-		(text "EXEC2" (rect 21 107 59 126)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 112)(pt 16 112))
-	)
-	(port
-		(pt 0 128)
-		(input)
-		(text "stack_data[15..0]" (rect 0 0 103 19)(font "Intel Clear" (font_size 8)))
-		(text "stack_data[15..0]" (rect 21 123 124 142)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 128)(pt 16 128)(line_width 3))
-	)
-	(port
-		(pt 0 144)
-		(input)
-		(text "CLK" (rect 0 0 23 19)(font "Intel Clear" (font_size 8)))
-		(text "CLK" (rect 21 139 44 158)(font "Intel Clear" (font_size 8)))
-		(line (pt 0 144)(pt 16 144))
-	)
-	(port
-		(pt 256 32)
-		(output)
-		(text "mul1[15..0]" (rect 0 0 69 19)(font "Intel Clear" (font_size 8)))
-		(text "mul1[15..0]" (rect 166 27 235 46)(font "Intel Clear" (font_size 8)))
-		(line (pt 256 32)(pt 240 32)(line_width 3))
-	)
-	(port
-		(pt 256 48)
-		(output)
-		(text "mul2[15..0]" (rect 0 0 69 19)(font "Intel Clear" (font_size 8)))
-		(text "mul2[15..0]" (rect 166 43 235 62)(font "Intel Clear" (font_size 8)))
-		(line (pt 256 48)(pt 240 48)(line_width 3))
-	)
-	(port
-		(pt 256 64)
-		(output)
-		(text "Rout[15..0]" (rect 0 0 66 19)(font "Intel Clear" (font_size 8)))
-		(text "Rout[15..0]" (rect 169 59 235 78)(font "Intel Clear" (font_size 8)))
-		(line (pt 256 64)(pt 240 64)(line_width 3))
-	)
-	(port
-		(pt 256 80)
-		(output)
-		(text "COND" (rect 0 0 36 19)(font "Intel Clear" (font_size 8)))
-		(text "COND" (rect 199 75 235 94)(font "Intel Clear" (font_size 8)))
-		(line (pt 256 80)(pt 240 80))
-	)
-	(port
-		(pt 256 96)
-		(output)
-		(text "memaddr[10..0]" (rect 0 0 97 19)(font "Intel Clear" (font_size 8)))
-		(text "memaddr[10..0]" (rect 138 91 235 110)(font "Intel Clear" (font_size 8)))
-		(line (pt 256 96)(pt 240 96)(line_width 3))
-	)
-	(drawing
-		(rectangle (rect 16 16 240 176))
-	)
-)
 (symbol
 	(rect 936 160 1152 304)
 	(text "ram_data" (rect 74 0 137 16)(font "Arial" (font_size 10)))
@@ -942,7 +842,7 @@ https://fpgasoftware.intel.com/eula.
 		(pt 112 48)
 		(output)
 		(text "result[WIDTH-1..0]" (rect 75 35 177 49)(font "Arial" (font_size 8)))
-		(text "result[]" (rect 75 35 107 49)(font "Arial" (font_size 8)))
+		(text "result[]" (rect 75 35 113 49)(font "Arial" (font_size 8)))
 		(line (pt 68 48)(pt 112 48)(line_width 3))
 	)
 	(parameter
@@ -990,7 +890,7 @@ https://fpgasoftware.intel.com/eula.
 		(pt 112 48)
 		(output)
 		(text "result[WIDTH-1..0]" (rect 75 35 177 49)(font "Arial" (font_size 8)))
-		(text "result[]" (rect 75 35 107 49)(font "Arial" (font_size 8)))
+		(text "result[]" (rect 75 35 113 49)(font "Arial" (font_size 8)))
 		(line (pt 68 48)(pt 112 48)(line_width 3))
 	)
 	(parameter
@@ -1297,6 +1197,105 @@ https://fpgasoftware.intel.com/eula.
 		(rectangle (rect 16 16 192 384))
 	)
 )
+(symbol
+	(rect 928 320 1184 512)
+	(text "ALU_top" (rect 5 0 56 19)(font "Intel Clear" (font_size 8)))
+	(text "ALU" (rect 8 171 28 188)(font "Intel Clear" ))
+	(port
+		(pt 0 32)
+		(input)
+		(text "ALU_en" (rect 0 0 46 19)(font "Intel Clear" (font_size 8)))
+		(text "ALU_en" (rect 21 27 67 46)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 32)(pt 16 32))
+	)
+	(port
+		(pt 0 48)
+		(input)
+		(text "Rs1[15..0]" (rect 0 0 61 19)(font "Intel Clear" (font_size 8)))
+		(text "Rs1[15..0]" (rect 21 43 82 62)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 48)(pt 16 48)(line_width 3))
+	)
+	(port
+		(pt 0 64)
+		(input)
+		(text "Rs2[15..0]" (rect 0 0 61 19)(font "Intel Clear" (font_size 8)))
+		(text "Rs2[15..0]" (rect 21 59 82 78)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 64)(pt 16 64)(line_width 3))
+	)
+	(port
+		(pt 0 80)
+		(input)
+		(text "Rd[15..0]" (rect 0 0 55 19)(font "Intel Clear" (font_size 8)))
+		(text "Rd[15..0]" (rect 21 75 76 94)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 80)(pt 16 80)(line_width 3))
+	)
+	(port
+		(pt 0 96)
+		(input)
+		(text "op[5..0]" (rect 0 0 46 19)(font "Intel Clear" (font_size 8)))
+		(text "op[5..0]" (rect 21 91 67 110)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 96)(pt 16 96)(line_width 3))
+	)
+	(port
+		(pt 0 112)
+		(input)
+		(text "EXEC2" (rect 0 0 38 19)(font "Intel Clear" (font_size 8)))
+		(text "EXEC2" (rect 21 107 59 126)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 112)(pt 16 112))
+	)
+	(port
+		(pt 0 128)
+		(input)
+		(text "stack_data[15..0]" (rect 0 0 103 19)(font "Intel Clear" (font_size 8)))
+		(text "stack_data[15..0]" (rect 21 123 124 142)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 128)(pt 16 128)(line_width 3))
+	)
+	(port
+		(pt 0 144)
+		(input)
+		(text "CLK" (rect 0 0 23 19)(font "Intel Clear" (font_size 8)))
+		(text "CLK" (rect 21 139 44 158)(font "Intel Clear" (font_size 8)))
+		(line (pt 0 144)(pt 16 144))
+	)
+	(port
+		(pt 256 32)
+		(output)
+		(text "mul1[15..0]" (rect 0 0 69 19)(font "Intel Clear" (font_size 8)))
+		(text "mul1[15..0]" (rect 166 27 235 46)(font "Intel Clear" (font_size 8)))
+		(line (pt 256 32)(pt 240 32)(line_width 3))
+	)
+	(port
+		(pt 256 48)
+		(output)
+		(text "mul2[15..0]" (rect 0 0 69 19)(font "Intel Clear" (font_size 8)))
+		(text "mul2[15..0]" (rect 166 43 235 62)(font "Intel Clear" (font_size 8)))
+		(line (pt 256 48)(pt 240 48)(line_width 3))
+	)
+	(port
+		(pt 256 64)
+		(output)
+		(text "Rout[15..0]" (rect 0 0 66 19)(font "Intel Clear" (font_size 8)))
+		(text "Rout[15..0]" (rect 169 59 235 78)(font "Intel Clear" (font_size 8)))
+		(line (pt 256 64)(pt 240 64)(line_width 3))
+	)
+	(port
+		(pt 256 80)
+		(output)
+		(text "COND" (rect 0 0 36 19)(font "Intel Clear" (font_size 8)))
+		(text "COND" (rect 199 75 235 94)(font "Intel Clear" (font_size 8)))
+		(line (pt 256 80)(pt 240 80))
+	)
+	(port
+		(pt 256 96)
+		(output)
+		(text "memaddr[10..0]" (rect 0 0 97 19)(font "Intel Clear" (font_size 8)))
+		(text "memaddr[10..0]" (rect 138 91 235 110)(font "Intel Clear" (font_size 8)))
+		(line (pt 256 96)(pt 240 96)(line_width 3))
+	)
+	(drawing
+		(rectangle (rect 16 16 240 176))
+	)
+)
 (connector
 	(pt 856 192)
 	(pt 936 192)
diff --git a/CPUProject.qsf b/CPUProject.qsf
index 0e69956..d8e4b39 100644
--- a/CPUProject.qsf
+++ b/CPUProject.qsf
@@ -41,7 +41,7 @@ set_global_assignment -name DEVICE AUTO
 set_global_assignment -name TOP_LEVEL_ENTITY CPUProject
 set_global_assignment -name ORIGINAL_QUARTUS_VERSION 18.1.0
 set_global_assignment -name PROJECT_CREATION_TIME_DATE "12:38:11  MAY 20, 2020"
-set_global_assignment -name LAST_QUARTUS_VERSION "19.1.0 Lite Edition"
+set_global_assignment -name LAST_QUARTUS_VERSION "18.1.0 Standard Edition"
 set_global_assignment -name PROJECT_OUTPUT_DIRECTORY output_files
 set_global_assignment -name TIMING_ANALYZER_MULTICORNER_ANALYSIS ON
 set_global_assignment -name NUM_PARALLEL_PROCESSORS ALL
@@ -62,12 +62,13 @@ set_global_assignment -name POWER_USE_PVA ON
 set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top
 set_global_assignment -name PARTITION_FITTER_PRESERVATION_LEVEL PLACEMENT_AND_ROUTING -section_id Top
 set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top
+set_instance_assignment -name PARTITION_HIERARCHY root_partition -to | -section_id Top
+set_global_assignment -name VERILOG_FILE max_min.v
 set_global_assignment -name SDC_FILE CPUProject.sdc
 set_global_assignment -name VERILOG_FILE LIFOstack.v
 set_global_assignment -name VERILOG_FILE alu.v
 set_global_assignment -name MIF_FILE LUTSquares.mif
 set_global_assignment -name BDF_FILE mul8.bdf
-set_global_assignment -name BDF_FILE abs.bdf
 set_global_assignment -name BDF_FILE CPUProject.bdf
 set_global_assignment -name BDF_FILE reg_file.bdf
 set_global_assignment -name QIP_FILE ram_data.qip
@@ -77,13 +78,8 @@ set_global_assignment -name MIF_FILE data.mif
 set_global_assignment -name MIF_FILE instr.mif
 set_global_assignment -name BDF_FILE mul16.bdf
 set_global_assignment -name QIP_FILE LUT.qip
-set_global_assignment -name VERILOG_FILE min.v
 set_global_assignment -name VERILOG_FILE SM.v
 set_global_assignment -name BDF_FILE ALU_top.bdf
 set_global_assignment -name VERILOG_FILE mux_8x16.v
-set_global_assignment -name VERILOG_FILE mux_3x16.v
 set_global_assignment -name VERILOG_FILE ADD_1.v
-set_global_assignment -name VERILOG_FILE SM_pipelined.v
-set_global_assignment -name VECTOR_WAVEFORM_FILE Waveform.vwf
-set_global_assignment -name VECTOR_WAVEFORM_FILE Waveform1.vwf
-set_instance_assignment -name PARTITION_HIERARCHY root_partition -to | -section_id Top
\ No newline at end of file
+set_global_assignment -name VERILOG_FILE SM_pipelined.v
\ No newline at end of file
diff --git a/CPUProject.qws b/CPUProject.qws
index d4099da..0371c29 100644
Binary files a/CPUProject.qws and b/CPUProject.qws differ
diff --git a/DECODE.bsf b/DECODE.bsf
index 8255261..7a4bebf 100644
--- a/DECODE.bsf
+++ b/DECODE.bsf
@@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
 the Block Editor! File corruption is VERY likely to occur.
 */
 /*
-Copyright (C) 2019  Intel Corporation. All rights reserved.
+Copyright (C) 2018  Intel Corporation. All rights reserved.
 Your use of Intel Corporation's design tools, logic functions 
-and other software and tools, and any partner logic 
+and other software and tools, and its AMPP partner logic 
 functions, and any output files from any of the foregoing 
 (including device programming or simulation files), and any 
 associated documentation or information are expressly subject 
@@ -16,8 +16,7 @@ the Intel FPGA IP License Agreement, or other applicable license
 agreement, including, without limitation, that your use is for
 the sole purpose of programming logic devices manufactured by
 Intel and sold by Intel or its authorized distributors.  Please
-refer to the applicable agreement for further details, at
-https://fpgasoftware.intel.com/eula.
+refer to the applicable agreement for further details.
 */
 (header "symbol" (version "1.1"))
 (symbol
diff --git a/DECODE.v b/DECODE.v
index 83f16e7..e20de6e 100644
--- a/DECODE.v
+++ b/DECODE.v
@@ -41,7 +41,8 @@ module DECODE
 	//Different opcodes (refer to documentation):
 	wire LDA =  msb & ~ls;
 	wire STA =  msb &  ls;
-	wire JMP = ~msb & ~op[5] & ~op[4] & ~op[3] & ~op[2];
+	wire JMP = ~msb & ~op[5] & ~op[4] & ~op[3] & ~op[2] & ~op[1] & ~op[0];
+	wire JMA = ~msb & ~op[5] & ~op[4] & ~op[3] & ~op[2] & ~op[1] &  op[0];
 	wire JCX = ~msb & ((~op[5] & ~op[4] & ~op[3] & op[2]) | (~op[5] & ~op[4] & op[3] & ~op[2]));
 	wire MUL = ~msb & ~op[5] &  op[4] &  op[3] &  op[2] & ~op[1] & ~op[0];
 	wire MLA = ~msb & ~op[5] &  op[4] &  op[3] &  op[2] & ~op[1] &  op[0];
@@ -50,37 +51,38 @@ module DECODE
 	wire POP = ~msb &  op[5] & ~op[4] &  op[3] & ~op[2] & ~op[1] &  op[0];
 	wire LDR = ~msb &  op[5] & ~op[4] &  op[3] & ~op[2] &  op[1] & ~op[0];
 	wire STR = ~msb &  op[5] & ~op[4] &  op[3] & ~op[2] &  op[1] &  op[0];
+	wire CLL = ~msb &  op[5] & ~op[4] & ~op[3] &  op[2] &  op[1] & ~op[0];
+	wire RTN = ~msb &  op[5] & ~op[4] & ~op[3] &  op[2] &  op[1] &  op[0];
 	wire NOP = ~msb &  op[5] &  op[4] &  op[3] &  op[2] &  op[1] & ~op[0];
 	wire STP = ~msb &  op[5] &  op[4] &  op[3] &  op[2] &  op[1] &  op[0];
 	
-	assign R0_count = EXEC1 & (~(JMP | (JCX & COND_result) | STP));
-	assign R0_en = (EXEC1 & (~(STA | NOP | STP | LDA | PSH | LDR) & ~Rd[2] & ~Rd[1] & ~Rd[0] | JMP | JCX & COND_result)) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & ~Rd[1] & ~Rd[0]);
-	assign R1_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & ~Rd[2] & ~Rd[1] &  Rd[0]) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & ~Rd[1] &  Rd[0]);
-	assign R2_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & ~Rd[2] &  Rd[1] & ~Rd[0]) | (EXEC2 & LDA & ~Rls[2] &  Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] &  Rd[1] & ~Rd[0]);
-	assign R3_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & ~Rd[2] &  Rd[1] &  Rd[0]) | (EXEC2 & LDA & ~Rls[2] &  Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] &  Rd[1] &  Rd[0]);
-	assign R4_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) &  Rd[2] & ~Rd[1] & ~Rd[0]) | (EXEC2 & LDA &  Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) &  Rd[2] & ~Rd[1] & ~Rd[0]);
-	assign R5_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) &  Rd[2] & ~Rd[1] &  Rd[0]) | (EXEC2 & LDA &  Rls[2] & ~Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) &  Rd[2] & ~Rd[1] &  Rd[0]);
-	assign R6_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) &  Rd[2] &  Rd[1] & ~Rd[0]) | (EXEC2 & LDA &  Rls[2] &  Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) &  Rd[2] &  Rd[1] & ~Rd[0]);
-	assign R7_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) &  Rd[2] &  Rd[1] &  Rd[0]) | (EXEC2 & LDA &  Rls[2] &  Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) &  Rd[2] &  Rd[1] &  Rd[0]);
-	assign s1[2] = (~(JMP | STA | LDA | NOP | STP | POP) & Rs1[2]) | (STA & Rls[2]);
-	assign s1[1] = (~(JMP | STA | LDA | NOP | STP | POP) & Rs1[1]) | (STA & Rls[1]);
-	assign s1[0] = (~(JMP | STA | LDA | NOP | STP | POP) & Rs1[0]) | (STA & Rls[0]);
-	assign s2[2] = (~(JMP | STA | LDA | NOP | STP | POP | PSH | LDR | STR) & Rs2[2]);
-	assign s2[1] = (~(JMP | STA | LDA | NOP | STP | POP | PSH | LDR | STR) & Rs2[1]);
-	assign s2[0] = (~(JMP | STA | LDA | NOP | STP | POP | PSH | LDR | STR) & Rs2[0]);
-	assign s3[2] = (~(STA | LDA | NOP | STP | PSH | POP) & Rd[2]);
-	assign s3[1] = (~(STA | LDA | NOP | STP | PSH | POP) & Rd[1]);
-	assign s3[0] = (~(STA | LDA | NOP | STP | PSH | POP) & Rd[0]);
+	assign R0_count = EXEC1 & (~(JMP | JMA | (JCX & COND_result) | STP | CLL | RTN));
+	assign R0_en = (EXEC1 & (~(STA | NOP | STP | LDA | PSH | LDR | CLL | RTN) & ~Rd[2] & ~Rd[1] & ~Rd[0] | JMP | (JCX & COND_result) | JMA)) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & ~Rd[1] & ~Rd[0]) | (EXEC2 & RTN) | (EXEC1 & CLL);
+	assign R1_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & ~Rd[2] & ~Rd[1] &  Rd[0]) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & ~Rd[2] & ~Rd[1] &  Rd[0]);
+	assign R2_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & ~Rd[2] &  Rd[1] & ~Rd[0]) | (EXEC2 & LDA & ~Rls[2] &  Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & ~Rd[2] &  Rd[1] & ~Rd[0]);
+	assign R3_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & ~Rd[2] &  Rd[1] &  Rd[0]) | (EXEC2 & LDA & ~Rls[2] &  Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & ~Rd[2] &  Rd[1] &  Rd[0]);
+	assign R4_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) &  Rd[2] & ~Rd[1] & ~Rd[0]) | (EXEC2 & LDA &  Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) &  Rd[2] & ~Rd[1] & ~Rd[0]);
+	assign R5_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) &  Rd[2] & ~Rd[1] &  Rd[0]) | (EXEC2 & LDA &  Rls[2] & ~Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) &  Rd[2] & ~Rd[1] &  Rd[0]);
+	assign R6_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) &  Rd[2] &  Rd[1] & ~Rd[0]) | (EXEC2 & LDA &  Rls[2] &  Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) &  Rd[2] &  Rd[1] & ~Rd[0]);
+	assign R7_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) &  Rd[2] &  Rd[1] &  Rd[0]) | (EXEC2 & LDA &  Rls[2] &  Rls[1] &  Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) &  Rd[2] &  Rd[1] &  Rd[0]);
+	assign s1[2] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | CLL | RTN) & Rs1[2]) | (STA & Rls[2]);
+	assign s1[1] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | CLL | RTN) & Rs1[1]) | (STA & Rls[1]);
+	assign s1[0] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | CLL | RTN) & Rs1[0]) | (STA & Rls[0]);
+	assign s2[2] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | PSH | LDR | STR | CLL | RTN) & Rs2[2]);
+	assign s2[1] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | PSH | LDR | STR | CLL | RTN) & Rs2[1]);
+	assign s2[0] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | PSH | LDR | STR | CLL | RTN) & Rs2[0]);
+	assign s3[2] = (~(STA | LDA | NOP | STP | PSH | POP | RTN) & Rd[2]);
+	assign s3[1] = (~(STA | LDA | NOP | STP | PSH | POP | RTN) & Rd[1]);
+	assign s3[0] = (~(STA | LDA | NOP | STP | PSH | POP | RTN) & Rd[0]);
 	assign s4 = ~(LDA | LDR);
 	assign RAMd_wren = EXEC1 & (STA | STR);
 	assign RAMd_en = EXEC1 & (STA | LDA | STR | LDR);
 	assign RAMi_en = FETCH;
 	assign ALU_en = LDA | STA;
-	assign E2 = EXEC1 & (LDA | MUL | MLA | MLS | POP | LDR);
-	assign stack_en = (EXEC1 & PSH) | ((EXEC1 | EXEC2) & POP);
+	assign E2 = EXEC1 & (LDA | MUL | MLA | MLS | POP | LDR | RTN);
+	assign stack_en = (EXEC1 & (PSH | CLL | RTN | POP));
 	assign stack_rst = STP;
-	assign stack_rw = EXEC1 & PSH;
+	assign stack_rw = EXEC1 & (PSH | CLL);
 	assign s5 = EXEC1 & (STR | LDR);
 	
 endmodule
-	
\ No newline at end of file
diff --git a/alu.bsf b/alu.bsf
index 010863f..1882d43 100644
--- a/alu.bsf
+++ b/alu.bsf
@@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
 the Block Editor! File corruption is VERY likely to occur.
 */
 /*
-Copyright (C) 2019  Intel Corporation. All rights reserved.
+Copyright (C) 2018  Intel Corporation. All rights reserved.
 Your use of Intel Corporation's design tools, logic functions 
-and other software and tools, and any partner logic 
+and other software and tools, and its AMPP partner logic 
 functions, and any output files from any of the foregoing 
 (including device programming or simulation files), and any 
 associated documentation or information are expressly subject 
@@ -16,8 +16,7 @@ the Intel FPGA IP License Agreement, or other applicable license
 agreement, including, without limitation, that your use is for
 the sole purpose of programming logic devices manufactured by
 Intel and sold by Intel or its authorized distributors.  Please
-refer to the applicable agreement for further details, at
-https://fpgasoftware.intel.com/eula.
+refer to the applicable agreement for further details.
 */
 (header "symbol" (version "1.1"))
 (symbol
@@ -55,8 +54,8 @@ https://fpgasoftware.intel.com/eula.
 	(port
 		(pt 0 96)
 		(input)
-		(text "opcode[5..0]" (rect 0 0 48 12)(font "Arial" ))
-		(text "opcode[5..0]" (rect 21 91 69 103)(font "Arial" ))
+		(text "instr[15..0]" (rect 0 0 40 12)(font "Arial" ))
+		(text "instr[15..0]" (rect 21 91 61 103)(font "Arial" ))
 		(line (pt 0 96)(pt 16 96)(line_width 3))
 	)
 	(port
diff --git a/alu.v b/alu.v
index f9205c8..d1eeb68 100644
--- a/alu.v
+++ b/alu.v
@@ -1,10 +1,10 @@
-module alu (enable, Rs1, Rs2, Rd, opcode, mulresult, exec2, stackout, mul1, mul2, Rout, jump, memaddr);
+module alu (enable, Rs1, Rs2, Rd, instr, mulresult, exec2, stackout, mul1, mul2, Rout, jump, memaddr);
 
 input enable; // active LOW, disables the ALU during load/store operations so that undefined behaviour does not occur
 input signed [15:0] Rs1; // input source register 1
 input signed [15:0] Rs2; // input source register 2
 input signed [15:0] Rd; // input destination register
-input [5:0] opcode; // opcode is fed in from instruction using wires outside ALU
+input [15:0] instr; // opcode is fed in from instruction using wires outside ALU
 input signed [31:0] mulresult; // 32-bit result from multiplier
 input exec2; // Input from state machine to indicate when to take in result from multiplication
 input [15:0] stackout; // input from stack to be fed back to registers
@@ -13,9 +13,10 @@ output reg signed [15:0] mul1; // first number to be multiplied
 output reg signed [15:0] mul2; // second number to be multiplied
 output signed [15:0] Rout; // value to be saved to destination register
 output jump; // tells decoder whether Jump condition is true
-reg carry; // Internal carry register that is updated during appropriate opcodes
+reg carry; // Internal carry register that is updated during appropriate opcodes, also provides output for debugging
 output reg [10:0] memaddr; // address to load data from / store data to RAMd
 
+wire [5:0]opcode = instr[14:9]; //opcode of current instruction
 reg signed [16:0] alusum; // extra bit to hold carry from operations other than Multiply
 assign Rout = alusum [15:0];
 assign jump = (alusum[16] && ((opcode[5:2] == 4'b0000) | (opcode[5:2] == 4'b0001) | (opcode[5:2] == 4'b0010)));
@@ -157,9 +158,13 @@ always @(opcode, mulresult)
 				6'b100011: ;
 				
 				6'b100100: alusum = {1'b0, (Rs1 >> Rs2[3:0]) | (Rs1 << (16 - Rs2[3:0]))}; // ROR Shift Right Loop (Rd = Rs1 shifted right by Rs2, but Rs1[0] -> Rs1[15])
-				6'b100101: alusum = ({Rs1, carry} >> (Rs2 % 17)) | ({Rs1, carry} << (17 - (Rs2 % 17)));// RRC Shift Right Loop w/ Carry (Rd = Rs1 shifted right by Rs2, but Rs1[0] -> Carry & Carry -> Rs1[15])
-				6'b100110: ;
-				6'b100111: ;
+//				6'b100101: alusum = ({Rs1, carry} >> (Rs2 % 17)) | ({Rs1, carry} << (17 - (Rs2 % 17)));// RRC Shift Right Loop w/ Carry (Rd = Rs1 shifted right by Rs2, but Rs1[0] -> Carry & Carry -> Rs1[15])
+				6'b100110: alusum = {1'b1, Rd}; //CLL function call
+				6'b100111: begin  //RTN return to prev call
+						if(exec2) begin
+								alusum = {1'b0, stackout}; 
+							end
+					end
 				
 				6'b101000: alusum = {1'b0, Rs1}; // PSH Push value to stack (Stack = Rs1)
 				6'b101001: alusum = {1'b0, stackout}; // POP Pop value from stack (Rd = Stack)
@@ -183,4 +188,4 @@ always @(opcode, mulresult)
 			end
 	end
 
-endmodule
\ No newline at end of file
+endmodule
diff --git a/mux_3x16.bsf b/mux_3x16.bsf
deleted file mode 100644
index 398ef64..0000000
--- a/mux_3x16.bsf
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
-WARNING: Do NOT edit the input and output ports in this file in a text
-editor if you plan to continue editing the block that represents it in
-the Block Editor! File corruption is VERY likely to occur.
-*/
-/*
-Copyright (C) 2018  Intel Corporation. All rights reserved.
-Your use of Intel Corporation's design tools, logic functions 
-and other software and tools, and its AMPP partner logic 
-functions, and any output files from any of the foregoing 
-(including device programming or simulation files), and any 
-associated documentation or information are expressly subject 
-to the terms and conditions of the Intel Program License 
-Subscription Agreement, the Intel Quartus Prime License Agreement,
-the Intel FPGA IP License Agreement, or other applicable license
-agreement, including, without limitation, that your use is for
-the sole purpose of programming logic devices manufactured by
-Intel and sold by Intel or its authorized distributors.  Please
-refer to the applicable agreement for further details.
-*/
-(header "symbol" (version "1.1"))
-(symbol
-	(rect 16 16 200 128)
-	(text "mux_3x16" (rect 5 0 46 12)(font "Arial" ))
-	(text "inst" (rect 8 96 20 108)(font "Arial" ))
-	(port
-		(pt 0 32)
-		(input)
-		(text "s[1..0]" (rect 0 0 23 12)(font "Arial" ))
-		(text "s[1..0]" (rect 21 27 44 39)(font "Arial" ))
-		(line (pt 0 32)(pt 16 32)(line_width 3))
-	)
-	(port
-		(pt 0 48)
-		(input)
-		(text "in0[15..0]" (rect 0 0 34 12)(font "Arial" ))
-		(text "in0[15..0]" (rect 21 43 55 55)(font "Arial" ))
-		(line (pt 0 48)(pt 16 48)(line_width 3))
-	)
-	(port
-		(pt 0 64)
-		(input)
-		(text "in1[15..0]" (rect 0 0 33 12)(font "Arial" ))
-		(text "in1[15..0]" (rect 21 59 54 71)(font "Arial" ))
-		(line (pt 0 64)(pt 16 64)(line_width 3))
-	)
-	(port
-		(pt 0 80)
-		(input)
-		(text "in2[15..0]" (rect 0 0 34 12)(font "Arial" ))
-		(text "in2[15..0]" (rect 21 75 55 87)(font "Arial" ))
-		(line (pt 0 80)(pt 16 80)(line_width 3))
-	)
-	(port
-		(pt 184 32)
-		(output)
-		(text "result[15..0]" (rect 0 0 44 12)(font "Arial" ))
-		(text "result[15..0]" (rect 119 27 163 39)(font "Arial" ))
-		(line (pt 184 32)(pt 168 32)(line_width 3))
-	)
-	(drawing
-		(rectangle (rect 16 16 168 96)(line_width 1))
-	)
-)
diff --git a/mux_3x16.v b/mux_3x16.v
deleted file mode 100644
index 850df4f..0000000
--- a/mux_3x16.v
+++ /dev/null
@@ -1,19 +0,0 @@
-module mux_3x16 (s, in0, in1, in2, result);
-
-input [1:0]s;
-input [15:0]in0;
-input [15:0]in1;
-input [15:0]in2;
-
-output reg [15:0]result;
-
-always @(*) begin
-	case(s)
-		2'b00: result = in0;
-		2'b01: result = in1;
-		2'b10: result = in2;
-		default: result = in0;
-	endcase
-end
-
-endmodule
diff --git a/mux_3x16.v.bak b/mux_3x16.v.bak
deleted file mode 100644
index 710f8c1..0000000
--- a/mux_3x16.v.bak
+++ /dev/null
@@ -1,18 +0,0 @@
-module mux_3x16 (s, in0, in1, in2, result);
-
-input [1:0]s;
-input [15:0]in0;
-input [15:0]in1;
-input [15:0]in2;
-
-output reg [15:0]result;
-
-always @(*) begin
-	case(s)
-		2'b00: result = in0;
-		2'b01: result = in1;
-		2'b10: result = in2;
-	endcase
-end
-
-endmodule