diff --git a/register_4x/38_decoder.bdf b/register_4x/38_decoder.bdf
new file mode 100644
index 0000000..4f89c23
--- /dev/null
+++ b/register_4x/38_decoder.bdf
@@ -0,0 +1,886 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
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diff --git a/register_4x/38_decoder.bsf b/register_4x/38_decoder.bsf
new file mode 100644
index 0000000..942dc3a
--- /dev/null
+++ b/register_4x/38_decoder.bsf
@@ -0,0 +1,106 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
+(header "symbol" (version "1.1"))
+(symbol
+	(rect 16 16 112 208)
+	(text "38_decoder" (rect 5 0 73 14)(font "Arial" (font_size 8)))
+	(text "inst" (rect 8 176 25 188)(font "Arial" ))
+	(port
+		(pt 0 32)
+		(input)
+		(text "I2" (rect 0 0 9 14)(font "Arial" (font_size 8)))
+		(text "I2" (rect 21 27 30 41)(font "Arial" (font_size 8)))
+		(line (pt 0 32)(pt 16 32)(line_width 1))
+	)
+	(port
+		(pt 0 48)
+		(input)
+		(text "I1" (rect 0 0 9 14)(font "Arial" (font_size 8)))
+		(text "I1" (rect 21 43 30 57)(font "Arial" (font_size 8)))
+		(line (pt 0 48)(pt 16 48)(line_width 1))
+	)
+	(port
+		(pt 0 64)
+		(input)
+		(text "I0" (rect 0 0 9 14)(font "Arial" (font_size 8)))
+		(text "I0" (rect 21 59 30 73)(font "Arial" (font_size 8)))
+		(line (pt 0 64)(pt 16 64)(line_width 1))
+	)
+	(port
+		(pt 96 32)
+		(output)
+		(text "Y7" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y7" (rect 59 27 75 41)(font "Arial" (font_size 8)))
+		(line (pt 96 32)(pt 80 32)(line_width 1))
+	)
+	(port
+		(pt 96 48)
+		(output)
+		(text "Y6" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y6" (rect 59 43 75 57)(font "Arial" (font_size 8)))
+		(line (pt 96 48)(pt 80 48)(line_width 1))
+	)
+	(port
+		(pt 96 64)
+		(output)
+		(text "Y5" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y5" (rect 59 59 75 73)(font "Arial" (font_size 8)))
+		(line (pt 96 64)(pt 80 64)(line_width 1))
+	)
+	(port
+		(pt 96 80)
+		(output)
+		(text "Y4" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y4" (rect 59 75 75 89)(font "Arial" (font_size 8)))
+		(line (pt 96 80)(pt 80 80)(line_width 1))
+	)
+	(port
+		(pt 96 96)
+		(output)
+		(text "Y3" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y3" (rect 59 91 75 105)(font "Arial" (font_size 8)))
+		(line (pt 96 96)(pt 80 96)(line_width 1))
+	)
+	(port
+		(pt 96 112)
+		(output)
+		(text "Y2" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y2" (rect 59 107 75 121)(font "Arial" (font_size 8)))
+		(line (pt 96 112)(pt 80 112)(line_width 1))
+	)
+	(port
+		(pt 96 128)
+		(output)
+		(text "Y1" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y1" (rect 59 123 75 137)(font "Arial" (font_size 8)))
+		(line (pt 96 128)(pt 80 128)(line_width 1))
+	)
+	(port
+		(pt 96 144)
+		(output)
+		(text "Y0" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y0" (rect 59 139 75 153)(font "Arial" (font_size 8)))
+		(line (pt 96 144)(pt 80 144)(line_width 1))
+	)
+	(drawing
+		(rectangle (rect 16 16 80 176)(line_width 1))
+	)
+)
diff --git a/register_4x/register_4x.bdf b/register_4x/register_4x.bdf
new file mode 100644
index 0000000..d1eb004
--- /dev/null
+++ b/register_4x/register_4x.bdf
@@ -0,0 +1,2154 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
+//#pragma file_not_in_maxplusii_format
+(header "graphic" (version "1.3"))
+(pin
+	(input)
+	(rect 448 232 616 248)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D0" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
+		(line (pt 92 4)(pt 117 4)(line_width 1))
+		(line (pt 121 8)(pt 168 8)(line_width 1))
+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect 448 216 616 232)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D1" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
+		(line (pt 92 4)(pt 117 4)(line_width 1))
+		(line (pt 121 8)(pt 168 8)(line_width 1))
+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect 448 200 616 216)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D2" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
+		(line (pt 92 4)(pt 117 4)(line_width 1))
+		(line (pt 121 8)(pt 168 8)(line_width 1))
+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect 448 184 616 200)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D3" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
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+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect 448 168 616 184)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D4" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
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+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect 448 152 616 168)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D5" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
+		(line (pt 92 4)(pt 117 4)(line_width 1))
+		(line (pt 121 8)(pt 168 8)(line_width 1))
+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect 448 136 616 152)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D6" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
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+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect 448 120 616 136)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "D7" (rect 5 0 19 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
+		(line (pt 92 4)(pt 117 4)(line_width 1))
+		(line (pt 121 8)(pt 168 8)(line_width 1))
+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect -96 48 72 64)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "EN0" (rect 5 0 26 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
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+		(line (pt 121 8)(pt 168 8)(line_width 1))
+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect -96 32 72 48)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "EN1" (rect 5 0 26 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
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+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect -96 248 72 264)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "CP" (rect 5 0 20 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
+		(line (pt 92 4)(pt 117 4)(line_width 1))
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+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(input)
+	(rect -112 -304 56 -288)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "CLR" (rect 5 0 27 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
+		(line (pt 92 12)(pt 117 12)(line_width 1))
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+		(line (pt 92 12)(pt 92 4)(line_width 1))
+		(line (pt 117 4)(pt 121 8)(line_width 1))
+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(output)
+	(rect 1112 184 1288 200)
+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
+	(text "Q0" (rect 90 0 104 12)(font "Arial" ))
+	(pt 0 8)
+	(drawing
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+		(line (pt 52 12)(pt 52 4)(line_width 1))
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diff --git a/register_4x/register_4x.bsf b/register_4x/register_4x.bsf
new file mode 100644
index 0000000..0f6b07f
--- /dev/null
+++ b/register_4x/register_4x.bsf
@@ -0,0 +1,169 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
+(header "symbol" (version "1.1"))
+(symbol
+	(rect 16 16 112 272)
+	(text "register_4x" (rect 5 0 69 14)(font "Arial" (font_size 8)))
+	(text "inst" (rect 8 240 25 252)(font "Arial" ))
+	(port
+		(pt 0 32)
+		(input)
+		(text "CLR" (rect 0 0 23 14)(font "Arial" (font_size 8)))
+		(text "CLR" (rect 21 27 44 41)(font "Arial" (font_size 8)))
+		(line (pt 0 32)(pt 16 32)(line_width 1))
+	)
+	(port
+		(pt 0 48)
+		(input)
+		(text "EN1" (rect 0 0 22 14)(font "Arial" (font_size 8)))
+		(text "EN1" (rect 21 43 43 57)(font "Arial" (font_size 8)))
+		(line (pt 0 48)(pt 16 48)(line_width 1))
+	)
+	(port
+		(pt 0 64)
+		(input)
+		(text "EN0" (rect 0 0 22 14)(font "Arial" (font_size 8)))
+		(text "EN0" (rect 21 59 43 73)(font "Arial" (font_size 8)))
+		(line (pt 0 64)(pt 16 64)(line_width 1))
+	)
+	(port
+		(pt 0 80)
+		(input)
+		(text "D7" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D7" (rect 21 75 36 89)(font "Arial" (font_size 8)))
+		(line (pt 0 80)(pt 16 80)(line_width 1))
+	)
+	(port
+		(pt 0 96)
+		(input)
+		(text "D6" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D6" (rect 21 91 36 105)(font "Arial" (font_size 8)))
+		(line (pt 0 96)(pt 16 96)(line_width 1))
+	)
+	(port
+		(pt 0 112)
+		(input)
+		(text "D5" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D5" (rect 21 107 36 121)(font "Arial" (font_size 8)))
+		(line (pt 0 112)(pt 16 112)(line_width 1))
+	)
+	(port
+		(pt 0 128)
+		(input)
+		(text "D4" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D4" (rect 21 123 36 137)(font "Arial" (font_size 8)))
+		(line (pt 0 128)(pt 16 128)(line_width 1))
+	)
+	(port
+		(pt 0 144)
+		(input)
+		(text "D3" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D3" (rect 21 139 36 153)(font "Arial" (font_size 8)))
+		(line (pt 0 144)(pt 16 144)(line_width 1))
+	)
+	(port
+		(pt 0 160)
+		(input)
+		(text "D2" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D2" (rect 21 155 36 169)(font "Arial" (font_size 8)))
+		(line (pt 0 160)(pt 16 160)(line_width 1))
+	)
+	(port
+		(pt 0 176)
+		(input)
+		(text "D1" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D1" (rect 21 171 36 185)(font "Arial" (font_size 8)))
+		(line (pt 0 176)(pt 16 176)(line_width 1))
+	)
+	(port
+		(pt 0 192)
+		(input)
+		(text "D0" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D0" (rect 21 187 36 201)(font "Arial" (font_size 8)))
+		(line (pt 0 192)(pt 16 192)(line_width 1))
+	)
+	(port
+		(pt 0 208)
+		(input)
+		(text "CP" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "CP" (rect 21 203 36 217)(font "Arial" (font_size 8)))
+		(line (pt 0 208)(pt 16 208)(line_width 1))
+	)
+	(port
+		(pt 96 32)
+		(output)
+		(text "Q7" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q7" (rect 59 27 75 41)(font "Arial" (font_size 8)))
+		(line (pt 96 32)(pt 80 32)(line_width 1))
+	)
+	(port
+		(pt 96 48)
+		(output)
+		(text "Q6" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q6" (rect 59 43 75 57)(font "Arial" (font_size 8)))
+		(line (pt 96 48)(pt 80 48)(line_width 1))
+	)
+	(port
+		(pt 96 64)
+		(output)
+		(text "Q5" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q5" (rect 59 59 75 73)(font "Arial" (font_size 8)))
+		(line (pt 96 64)(pt 80 64)(line_width 1))
+	)
+	(port
+		(pt 96 80)
+		(output)
+		(text "Q4" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q4" (rect 59 75 75 89)(font "Arial" (font_size 8)))
+		(line (pt 96 80)(pt 80 80)(line_width 1))
+	)
+	(port
+		(pt 96 96)
+		(output)
+		(text "Q3" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q3" (rect 59 91 75 105)(font "Arial" (font_size 8)))
+		(line (pt 96 96)(pt 80 96)(line_width 1))
+	)
+	(port
+		(pt 96 112)
+		(output)
+		(text "Q2" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q2" (rect 59 107 75 121)(font "Arial" (font_size 8)))
+		(line (pt 96 112)(pt 80 112)(line_width 1))
+	)
+	(port
+		(pt 96 128)
+		(output)
+		(text "Q1" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q1" (rect 59 123 75 137)(font "Arial" (font_size 8)))
+		(line (pt 96 128)(pt 80 128)(line_width 1))
+	)
+	(port
+		(pt 96 144)
+		(output)
+		(text "Q0" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q0" (rect 59 139 75 153)(font "Arial" (font_size 8)))
+		(line (pt 96 144)(pt 80 144)(line_width 1))
+	)
+	(drawing
+		(rectangle (rect 16 16 80 240)(line_width 1))
+	)
+)
diff --git a/register_4x/register_4x.qpf b/register_4x/register_4x.qpf
new file mode 100644
index 0000000..ffc03d4
--- /dev/null
+++ b/register_4x/register_4x.qpf
@@ -0,0 +1,30 @@
+# -------------------------------------------------------------------------- #
+#
+# Copyright (C) 1991-2009 Altera Corporation
+# Your use of Altera 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 Altera Program License 
+# Subscription Agreement, Altera MegaCore Function License 
+# Agreement, or other applicable license agreement, including, 
+# without limitation, that your use is for the sole purpose of 
+# programming logic devices manufactured by Altera and sold by 
+# Altera or its authorized distributors.  Please refer to the 
+# applicable agreement for further details.
+#
+# -------------------------------------------------------------------------- #
+#
+# Quartus II
+# Version 9.0 Build 235 06/17/2009 Service Pack 2 SJ Web Edition
+# Date created = 14:35:36  March 29, 2022
+#
+# -------------------------------------------------------------------------- #
+
+QUARTUS_VERSION = "9.0"
+DATE = "14:35:36  March 29, 2022"
+
+# Revisions
+
+PROJECT_REVISION = "register_4x"
diff --git a/register_4x/register_4x.qsf b/register_4x/register_4x.qsf
new file mode 100644
index 0000000..25f9f55
--- /dev/null
+++ b/register_4x/register_4x.qsf
@@ -0,0 +1,53 @@
+# -------------------------------------------------------------------------- #
+#
+# Copyright (C) 1991-2009 Altera Corporation
+# Your use of Altera 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 Altera Program License 
+# Subscription Agreement, Altera MegaCore Function License 
+# Agreement, or other applicable license agreement, including, 
+# without limitation, that your use is for the sole purpose of 
+# programming logic devices manufactured by Altera and sold by 
+# Altera or its authorized distributors.  Please refer to the 
+# applicable agreement for further details.
+#
+# -------------------------------------------------------------------------- #
+#
+# Quartus II
+# Version 9.0 Build 235 06/17/2009 Service Pack 2 SJ Web Edition
+# Date created = 14:35:36  March 29, 2022
+#
+# -------------------------------------------------------------------------- #
+#
+# Notes:
+#
+# 1) The default values for assignments are stored in the file:
+#		register_4x_assignment_defaults.qdf
+#    If this file doesn't exist, see file:
+#		assignment_defaults.qdf
+#
+# 2) Altera recommends that you do not modify this file. This
+#    file is updated automatically by the Quartus II software
+#    and any changes you make may be lost or overwritten.
+#
+# -------------------------------------------------------------------------- #
+
+
+set_global_assignment -name FAMILY "Cyclone II"
+set_global_assignment -name DEVICE EP2C8Q208C8
+set_global_assignment -name TOP_LEVEL_ENTITY register_4x
+set_global_assignment -name ORIGINAL_QUARTUS_VERSION "9.0 SP2"
+set_global_assignment -name PROJECT_CREATION_TIME_DATE "14:35:36  MARCH 29, 2022"
+set_global_assignment -name LAST_QUARTUS_VERSION "9.0 SP2"
+set_global_assignment -name USE_GENERATED_PHYSICAL_CONSTRAINTS OFF -section_id eda_blast_fpga
+set_global_assignment -name MIN_CORE_JUNCTION_TEMP 0
+set_global_assignment -name MAX_CORE_JUNCTION_TEMP 85
+set_global_assignment -name BDF_FILE register_4x.bdf
+set_instance_assignment -name PARTITION_HIERARCHY root_partition -to | -section_id Top
+set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top
+set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top
+set_global_assignment -name LL_ROOT_REGION ON -section_id "Root Region"
+set_global_assignment -name LL_MEMBER_STATE LOCKED -section_id "Root Region"
\ No newline at end of file
diff --git a/register_4x/register_8b.bdf b/register_4x/register_8b.bdf
new file mode 100644
index 0000000..58d2990
--- /dev/null
+++ b/register_4x/register_8b.bdf
@@ -0,0 +1,1004 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
+//#pragma file_not_in_maxplusii_format
+(header "graphic" (version "1.3"))
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+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "CP" (rect 5 0 20 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
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+)
+(pin
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+	)
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+		(input)
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(line (pt 0 24)(pt 12 24)(line_width 1))
+	)
+	(port
+		(pt 32 0)
+		(input)
+		(text "PRN" (rect 24 13 41 25)(font "Courier New" (bold)))
+		(text "PRN" (rect 24 11 41 23)(font "Courier New" (bold)))
+		(line (pt 32 4)(pt 32 0)(line_width 1))
+	)
+	(port
+		(pt 64 24)
+		(output)
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(line (pt 52 24)(pt 64 24)(line_width 1))
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+	(drawing
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+		(circle (rect 28 4 36 12)(line_width 1))
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+	(text "DFF" (rect 1 0 19 10)(font "Arial" (font_size 6)))
+	(text "inst4" (rect 3 68 26 80)(font "Arial" ))
+	(port
+		(pt 32 80)
+		(input)
+		(text "CLRN" (rect 21 59 44 71)(font "Courier New" (bold)))
+		(text "CLRN" (rect 21 58 44 70)(font "Courier New" (bold)))
+		(line (pt 32 80)(pt 32 76)(line_width 1))
+	)
+	(port
+		(pt 0 40)
+		(input)
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
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+		(line (pt 0 40)(pt 12 40)(line_width 1))
+	)
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+		(pt 0 24)
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+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(line (pt 0 24)(pt 12 24)(line_width 1))
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+	(port
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+		(input)
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+		(text "PRN" (rect 24 11 41 23)(font "Courier New" (bold)))
+		(line (pt 32 4)(pt 32 0)(line_width 1))
+	)
+	(port
+		(pt 64 24)
+		(output)
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+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(line (pt 52 24)(pt 64 24)(line_width 1))
+	)
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+		(line (pt 12 32)(pt 20 40)(line_width 1))
+		(circle (rect 28 4 36 12)(line_width 1))
+		(circle (rect 28 68 36 76)(line_width 1))
+	)
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+	(rect 344 448 408 528)
+	(text "DFF" (rect 1 0 19 10)(font "Arial" (font_size 6)))
+	(text "inst5" (rect 3 68 26 80)(font "Arial" ))
+	(port
+		(pt 32 80)
+		(input)
+		(text "CLRN" (rect 21 59 44 71)(font "Courier New" (bold)))
+		(text "CLRN" (rect 21 58 44 70)(font "Courier New" (bold)))
+		(line (pt 32 80)(pt 32 76)(line_width 1))
+	)
+	(port
+		(pt 0 40)
+		(input)
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(line (pt 0 40)(pt 12 40)(line_width 1))
+	)
+	(port
+		(pt 0 24)
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+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(line (pt 0 24)(pt 12 24)(line_width 1))
+	)
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+		(input)
+		(text "PRN" (rect 24 13 41 25)(font "Courier New" (bold)))
+		(text "PRN" (rect 24 11 41 23)(font "Courier New" (bold)))
+		(line (pt 32 4)(pt 32 0)(line_width 1))
+	)
+	(port
+		(pt 64 24)
+		(output)
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(line (pt 52 24)(pt 64 24)(line_width 1))
+	)
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+		(line (pt 12 32)(pt 20 40)(line_width 1))
+		(circle (rect 28 4 36 12)(line_width 1))
+		(circle (rect 28 68 36 76)(line_width 1))
+	)
+)
+(symbol
+	(rect 344 544 408 624)
+	(text "DFF" (rect 1 0 19 10)(font "Arial" (font_size 6)))
+	(text "inst6" (rect 3 68 26 80)(font "Arial" ))
+	(port
+		(pt 32 80)
+		(input)
+		(text "CLRN" (rect 21 59 44 71)(font "Courier New" (bold)))
+		(text "CLRN" (rect 21 58 44 70)(font "Courier New" (bold)))
+		(line (pt 32 80)(pt 32 76)(line_width 1))
+	)
+	(port
+		(pt 0 40)
+		(input)
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(line (pt 0 40)(pt 12 40)(line_width 1))
+	)
+	(port
+		(pt 0 24)
+		(input)
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(line (pt 0 24)(pt 12 24)(line_width 1))
+	)
+	(port
+		(pt 32 0)
+		(input)
+		(text "PRN" (rect 24 13 41 25)(font "Courier New" (bold)))
+		(text "PRN" (rect 24 11 41 23)(font "Courier New" (bold)))
+		(line (pt 32 4)(pt 32 0)(line_width 1))
+	)
+	(port
+		(pt 64 24)
+		(output)
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(line (pt 52 24)(pt 64 24)(line_width 1))
+	)
+	(drawing
+		(line (pt 12 12)(pt 52 12)(line_width 1))
+		(line (pt 12 68)(pt 52 68)(line_width 1))
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+		(line (pt 19 40)(pt 12 47)(line_width 1))
+		(line (pt 12 32)(pt 20 40)(line_width 1))
+		(circle (rect 28 4 36 12)(line_width 1))
+		(circle (rect 28 68 36 76)(line_width 1))
+	)
+)
+(symbol
+	(rect 344 640 408 720)
+	(text "DFF" (rect 1 0 19 10)(font "Arial" (font_size 6)))
+	(text "inst7" (rect 3 68 26 80)(font "Arial" ))
+	(port
+		(pt 32 80)
+		(input)
+		(text "CLRN" (rect 21 59 44 71)(font "Courier New" (bold)))
+		(text "CLRN" (rect 21 58 44 70)(font "Courier New" (bold)))
+		(line (pt 32 80)(pt 32 76)(line_width 1))
+	)
+	(port
+		(pt 0 40)
+		(input)
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(line (pt 0 40)(pt 12 40)(line_width 1))
+	)
+	(port
+		(pt 0 24)
+		(input)
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(line (pt 0 24)(pt 12 24)(line_width 1))
+	)
+	(port
+		(pt 32 0)
+		(input)
+		(text "PRN" (rect 24 13 41 25)(font "Courier New" (bold)))
+		(text "PRN" (rect 24 11 41 23)(font "Courier New" (bold)))
+		(line (pt 32 4)(pt 32 0)(line_width 1))
+	)
+	(port
+		(pt 64 24)
+		(output)
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(line (pt 52 24)(pt 64 24)(line_width 1))
+	)
+	(drawing
+		(line (pt 12 12)(pt 52 12)(line_width 1))
+		(line (pt 12 68)(pt 52 68)(line_width 1))
+		(line (pt 52 68)(pt 52 12)(line_width 1))
+		(line (pt 12 68)(pt 12 12)(line_width 1))
+		(line (pt 19 40)(pt 12 47)(line_width 1))
+		(line (pt 12 32)(pt 20 40)(line_width 1))
+		(circle (rect 28 4 36 12)(line_width 1))
+		(circle (rect 28 68 36 76)(line_width 1))
+	)
+)
+(symbol
+	(rect 344 736 408 816)
+	(text "DFF" (rect 1 0 19 10)(font "Arial" (font_size 6)))
+	(text "inst8" (rect 3 68 26 80)(font "Arial" ))
+	(port
+		(pt 32 80)
+		(input)
+		(text "CLRN" (rect 21 59 44 71)(font "Courier New" (bold)))
+		(text "CLRN" (rect 21 58 44 70)(font "Courier New" (bold)))
+		(line (pt 32 80)(pt 32 76)(line_width 1))
+	)
+	(port
+		(pt 0 40)
+		(input)
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(text "CLK" (rect 3 29 20 41)(font "Courier New" (bold))(invisible))
+		(line (pt 0 40)(pt 12 40)(line_width 1))
+	)
+	(port
+		(pt 0 24)
+		(input)
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(text "D" (rect 14 20 19 32)(font "Courier New" (bold)))
+		(line (pt 0 24)(pt 12 24)(line_width 1))
+	)
+	(port
+		(pt 32 0)
+		(input)
+		(text "PRN" (rect 24 13 41 25)(font "Courier New" (bold)))
+		(text "PRN" (rect 24 11 41 23)(font "Courier New" (bold)))
+		(line (pt 32 4)(pt 32 0)(line_width 1))
+	)
+	(port
+		(pt 64 24)
+		(output)
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(text "Q" (rect 45 20 50 32)(font "Courier New" (bold)))
+		(line (pt 52 24)(pt 64 24)(line_width 1))
+	)
+	(drawing
+		(line (pt 12 12)(pt 52 12)(line_width 1))
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+		(line (pt 12 32)(pt 20 40)(line_width 1))
+		(circle (rect 28 4 36 12)(line_width 1))
+		(circle (rect 28 68 36 76)(line_width 1))
+	)
+)
+(connector
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+)
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diff --git a/register_4x/register_8b.bsf b/register_4x/register_8b.bsf
new file mode 100644
index 0000000..938b8cc
--- /dev/null
+++ b/register_4x/register_8b.bsf
@@ -0,0 +1,155 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
+(header "symbol" (version "1.1"))
+(symbol
+	(rect 16 16 112 240)
+	(text "register_8b" (rect 5 0 69 14)(font "Arial" (font_size 8)))
+	(text "inst" (rect 8 208 25 220)(font "Arial" ))
+	(port
+		(pt 0 32)
+		(input)
+		(text "CLR" (rect 0 0 23 14)(font "Arial" (font_size 8)))
+		(text "CLR" (rect 21 27 44 41)(font "Arial" (font_size 8)))
+		(line (pt 0 32)(pt 16 32)(line_width 1))
+	)
+	(port
+		(pt 0 48)
+		(input)
+		(text "CP" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "CP" (rect 21 43 36 57)(font "Arial" (font_size 8)))
+		(line (pt 0 48)(pt 16 48)(line_width 1))
+	)
+	(port
+		(pt 0 64)
+		(input)
+		(text "D7" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D7" (rect 21 59 36 73)(font "Arial" (font_size 8)))
+		(line (pt 0 64)(pt 16 64)(line_width 1))
+	)
+	(port
+		(pt 0 80)
+		(input)
+		(text "D6" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D6" (rect 21 75 36 89)(font "Arial" (font_size 8)))
+		(line (pt 0 80)(pt 16 80)(line_width 1))
+	)
+	(port
+		(pt 0 96)
+		(input)
+		(text "D5" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D5" (rect 21 91 36 105)(font "Arial" (font_size 8)))
+		(line (pt 0 96)(pt 16 96)(line_width 1))
+	)
+	(port
+		(pt 0 112)
+		(input)
+		(text "D4" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D4" (rect 21 107 36 121)(font "Arial" (font_size 8)))
+		(line (pt 0 112)(pt 16 112)(line_width 1))
+	)
+	(port
+		(pt 0 128)
+		(input)
+		(text "D3" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D3" (rect 21 123 36 137)(font "Arial" (font_size 8)))
+		(line (pt 0 128)(pt 16 128)(line_width 1))
+	)
+	(port
+		(pt 0 144)
+		(input)
+		(text "D2" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D2" (rect 21 139 36 153)(font "Arial" (font_size 8)))
+		(line (pt 0 144)(pt 16 144)(line_width 1))
+	)
+	(port
+		(pt 0 160)
+		(input)
+		(text "D1" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D1" (rect 21 155 36 169)(font "Arial" (font_size 8)))
+		(line (pt 0 160)(pt 16 160)(line_width 1))
+	)
+	(port
+		(pt 0 176)
+		(input)
+		(text "D0" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D0" (rect 21 171 36 185)(font "Arial" (font_size 8)))
+		(line (pt 0 176)(pt 16 176)(line_width 1))
+	)
+	(port
+		(pt 96 32)
+		(output)
+		(text "Q7" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q7" (rect 59 27 75 41)(font "Arial" (font_size 8)))
+		(line (pt 96 32)(pt 80 32)(line_width 1))
+	)
+	(port
+		(pt 96 48)
+		(output)
+		(text "Q6" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q6" (rect 59 43 75 57)(font "Arial" (font_size 8)))
+		(line (pt 96 48)(pt 80 48)(line_width 1))
+	)
+	(port
+		(pt 96 64)
+		(output)
+		(text "Q5" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q5" (rect 59 59 75 73)(font "Arial" (font_size 8)))
+		(line (pt 96 64)(pt 80 64)(line_width 1))
+	)
+	(port
+		(pt 96 80)
+		(output)
+		(text "Q4" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q4" (rect 59 75 75 89)(font "Arial" (font_size 8)))
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+	)
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+		(text "Q3" (rect 59 91 75 105)(font "Arial" (font_size 8)))
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+		(text "Q2" (rect 59 107 75 121)(font "Arial" (font_size 8)))
+		(line (pt 96 112)(pt 80 112)(line_width 1))
+	)
+	(port
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+		(text "Q1" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q1" (rect 59 123 75 137)(font "Arial" (font_size 8)))
+		(line (pt 96 128)(pt 80 128)(line_width 1))
+	)
+	(port
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+		(line (pt 96 144)(pt 80 144)(line_width 1))
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+	)
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diff --git a/register_4x/register_8b_with_switch.bdf b/register_4x/register_8b_with_switch.bdf
new file mode 100644
index 0000000..9992515
--- /dev/null
+++ b/register_4x/register_8b_with_switch.bdf
@@ -0,0 +1,1407 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
+//#pragma file_not_in_maxplusii_format
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+	(text "CP" (rect 5 0 20 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
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+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
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+		(line (pt 117 12)(pt 121 8)(line_width 1))
+	)
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+)
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diff --git a/register_4x/register_8b_with_switch.bsf b/register_4x/register_8b_with_switch.bsf
new file mode 100644
index 0000000..78044b8
--- /dev/null
+++ b/register_4x/register_8b_with_switch.bsf
@@ -0,0 +1,162 @@
+/*
+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) 1991-2009 Altera Corporation
+Your use of Altera 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 Altera Program License 
+Subscription Agreement, Altera MegaCore Function License 
+Agreement, or other applicable license agreement, including, 
+without limitation, that your use is for the sole purpose of 
+programming logic devices manufactured by Altera and sold by 
+Altera or its authorized distributors.  Please refer to the 
+applicable agreement for further details.
+*/
+(header "symbol" (version "1.1"))
+(symbol
+	(rect 16 16 112 240)
+	(text "register_8b_with_switch" (rect 5 0 147 14)(font "Arial" (font_size 8)))
+	(text "inst" (rect 8 208 25 220)(font "Arial" ))
+	(port
+		(pt 0 32)
+		(input)
+		(text "EN" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "EN" (rect 21 27 36 41)(font "Arial" (font_size 8)))
+		(line (pt 0 32)(pt 16 32)(line_width 1))
+	)
+	(port
+		(pt 0 48)
+		(input)
+		(text "CLR" (rect 0 0 23 14)(font "Arial" (font_size 8)))
+		(text "CLR" (rect 21 43 44 57)(font "Arial" (font_size 8)))
+		(line (pt 0 48)(pt 16 48)(line_width 1))
+	)
+	(port
+		(pt 0 64)
+		(input)
+		(text "CP" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "CP" (rect 21 59 36 73)(font "Arial" (font_size 8)))
+		(line (pt 0 64)(pt 16 64)(line_width 1))
+	)
+	(port
+		(pt 0 80)
+		(input)
+		(text "D7" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D7" (rect 21 75 36 89)(font "Arial" (font_size 8)))
+		(line (pt 0 80)(pt 16 80)(line_width 1))
+	)
+	(port
+		(pt 0 96)
+		(input)
+		(text "D6" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D6" (rect 21 91 36 105)(font "Arial" (font_size 8)))
+		(line (pt 0 96)(pt 16 96)(line_width 1))
+	)
+	(port
+		(pt 0 112)
+		(input)
+		(text "D5" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D5" (rect 21 107 36 121)(font "Arial" (font_size 8)))
+		(line (pt 0 112)(pt 16 112)(line_width 1))
+	)
+	(port
+		(pt 0 128)
+		(input)
+		(text "D4" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D4" (rect 21 123 36 137)(font "Arial" (font_size 8)))
+		(line (pt 0 128)(pt 16 128)(line_width 1))
+	)
+	(port
+		(pt 0 144)
+		(input)
+		(text "D3" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D3" (rect 21 139 36 153)(font "Arial" (font_size 8)))
+		(line (pt 0 144)(pt 16 144)(line_width 1))
+	)
+	(port
+		(pt 0 160)
+		(input)
+		(text "D2" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D2" (rect 21 155 36 169)(font "Arial" (font_size 8)))
+		(line (pt 0 160)(pt 16 160)(line_width 1))
+	)
+	(port
+		(pt 0 176)
+		(input)
+		(text "D1" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D1" (rect 21 171 36 185)(font "Arial" (font_size 8)))
+		(line (pt 0 176)(pt 16 176)(line_width 1))
+	)
+	(port
+		(pt 0 192)
+		(input)
+		(text "D0" (rect 0 0 15 14)(font "Arial" (font_size 8)))
+		(text "D0" (rect 21 187 36 201)(font "Arial" (font_size 8)))
+		(line (pt 0 192)(pt 16 192)(line_width 1))
+	)
+	(port
+		(pt 96 32)
+		(output)
+		(text "Q7" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q7" (rect 59 27 75 41)(font "Arial" (font_size 8)))
+		(line (pt 96 32)(pt 80 32)(line_width 1))
+	)
+	(port
+		(pt 96 48)
+		(output)
+		(text "Q6" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q6" (rect 59 43 75 57)(font "Arial" (font_size 8)))
+		(line (pt 96 48)(pt 80 48)(line_width 1))
+	)
+	(port
+		(pt 96 64)
+		(output)
+		(text "Q5" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q5" (rect 59 59 75 73)(font "Arial" (font_size 8)))
+		(line (pt 96 64)(pt 80 64)(line_width 1))
+	)
+	(port
+		(pt 96 80)
+		(output)
+		(text "Q4" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q4" (rect 59 75 75 89)(font "Arial" (font_size 8)))
+		(line (pt 96 80)(pt 80 80)(line_width 1))
+	)
+	(port
+		(pt 96 96)
+		(output)
+		(text "Q3" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q3" (rect 59 91 75 105)(font "Arial" (font_size 8)))
+		(line (pt 96 96)(pt 80 96)(line_width 1))
+	)
+	(port
+		(pt 96 112)
+		(output)
+		(text "Q2" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q2" (rect 59 107 75 121)(font "Arial" (font_size 8)))
+		(line (pt 96 112)(pt 80 112)(line_width 1))
+	)
+	(port
+		(pt 96 128)
+		(output)
+		(text "Q1" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q1" (rect 59 123 75 137)(font "Arial" (font_size 8)))
+		(line (pt 96 128)(pt 80 128)(line_width 1))
+	)
+	(port
+		(pt 96 144)
+		(output)
+		(text "Q0" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Q0" (rect 59 139 75 153)(font "Arial" (font_size 8)))
+		(line (pt 96 144)(pt 80 144)(line_width 1))
+	)
+	(drawing
+		(rectangle (rect 16 16 80 208)(line_width 1))
+	)
+)