From 00bbf8b267550b9f7e47444428f128f8d042893b Mon Sep 17 00:00:00 2001
From: juzeon <812312770@qq.com>
Date: Thu, 31 Mar 2022 15:11:28 +0800
Subject: [PATCH] add 24_decoder

---
 24_decoder/24_decoder.bdf    | 253 ++++++++++
 24_decoder/24_decoder.bsf    |  71 +++
 24_decoder/24_decoder.qpf    |  30 ++
 24_decoder/24_decoder.qsf    |  49 ++
 24_decoder/38_decoder.bdf    | 886 +++++++++++++++++++++++++++++++++++
 24_decoder/38_decoder.bsf    | 106 +++++
 machine_alpha/24_decoder.bdf | 253 ++++++++++
 machine_alpha/24_decoder.bsf |  71 +++
 8 files changed, 1719 insertions(+)
 create mode 100644 24_decoder/24_decoder.bdf
 create mode 100644 24_decoder/24_decoder.bsf
 create mode 100644 24_decoder/24_decoder.qpf
 create mode 100644 24_decoder/24_decoder.qsf
 create mode 100644 24_decoder/38_decoder.bdf
 create mode 100644 24_decoder/38_decoder.bsf
 create mode 100644 machine_alpha/24_decoder.bdf
 create mode 100644 machine_alpha/24_decoder.bsf

diff --git a/24_decoder/24_decoder.bdf b/24_decoder/24_decoder.bdf
new file mode 100644
index 0000000..8f51a61
--- /dev/null
+++ b/24_decoder/24_decoder.bdf
@@ -0,0 +1,253 @@
+/*
+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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+	(rect 336 264 504 280)
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+	(text "I0" (rect 5 0 14 12)(font "Arial" ))
+	(pt 168 8)
+	(drawing
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+		(line (pt 92 4)(pt 117 4)(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))
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+	(rect 336 248 504 264)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
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+	(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 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))
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+	(text "VCC" (rect 136 7 156 17)(font "Arial" (font_size 6)))
+)
+(pin
+	(output)
+	(rect 704 344 880 360)
+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
+	(text "Y0" (rect 90 0 104 12)(font "Arial" ))
+	(pt 0 8)
+	(drawing
+		(line (pt 0 8)(pt 52 8)(line_width 1))
+		(line (pt 52 4)(pt 78 4)(line_width 1))
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+		(line (pt 52 12)(pt 52 4)(line_width 1))
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+		(line (pt 82 8)(pt 78 12)(line_width 1))
+		(line (pt 78 12)(pt 82 8)(line_width 1))
+	)
+)
+(pin
+	(output)
+	(rect 704 328 880 344)
+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
+	(text "Y1" (rect 90 0 104 12)(font "Arial" ))
+	(pt 0 8)
+	(drawing
+		(line (pt 0 8)(pt 52 8)(line_width 1))
+		(line (pt 52 4)(pt 78 4)(line_width 1))
+		(line (pt 52 12)(pt 78 12)(line_width 1))
+		(line (pt 52 12)(pt 52 4)(line_width 1))
+		(line (pt 78 4)(pt 82 8)(line_width 1))
+		(line (pt 82 8)(pt 78 12)(line_width 1))
+		(line (pt 78 12)(pt 82 8)(line_width 1))
+	)
+)
+(pin
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+	(rect 704 312 880 328)
+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
+	(text "Y2" (rect 90 0 104 12)(font "Arial" ))
+	(pt 0 8)
+	(drawing
+		(line (pt 0 8)(pt 52 8)(line_width 1))
+		(line (pt 52 4)(pt 78 4)(line_width 1))
+		(line (pt 52 12)(pt 78 12)(line_width 1))
+		(line (pt 52 12)(pt 52 4)(line_width 1))
+		(line (pt 78 4)(pt 82 8)(line_width 1))
+		(line (pt 82 8)(pt 78 12)(line_width 1))
+		(line (pt 78 12)(pt 82 8)(line_width 1))
+	)
+)
+(pin
+	(output)
+	(rect 704 296 880 312)
+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
+	(text "Y3" (rect 90 0 104 12)(font "Arial" ))
+	(pt 0 8)
+	(drawing
+		(line (pt 0 8)(pt 52 8)(line_width 1))
+		(line (pt 52 4)(pt 78 4)(line_width 1))
+		(line (pt 52 12)(pt 78 12)(line_width 1))
+		(line (pt 52 12)(pt 52 4)(line_width 1))
+		(line (pt 78 4)(pt 82 8)(line_width 1))
+		(line (pt 82 8)(pt 78 12)(line_width 1))
+		(line (pt 78 12)(pt 82 8)(line_width 1))
+	)
+)
+(symbol
+	(rect 568 208 664 400)
+	(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)))
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+	)
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+		(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)))
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+	)
+	(port
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+		(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)))
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+	)
+	(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)))
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+	)
+	(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))
+	)
+)
+(symbol
+	(rect 496 176 528 208)
+	(text "GND" (rect 8 6 29 16)(font "Arial" (font_size 6)))
+	(text "inst1" (rect 3 -1 26 11)(font "Arial" )(invisible))
+	(port
+		(pt 16 32)
+		(output)
+		(text "1" (rect 18 0 23 12)(font "Courier New" (bold))(invisible))
+		(text "1" (rect 18 20 23 32)(font "Courier New" (bold))(invisible))
+		(line (pt 16 24)(pt 16 32)(line_width 1))
+	)
+	(drawing
+		(line (pt 8 24)(pt 16 16)(line_width 1))
+		(line (pt 16 16)(pt 24 24)(line_width 1))
+		(line (pt 8 24)(pt 24 24)(line_width 1))
+	)
+	(flipx)
+)
+(connector
+	(pt 504 256)
+	(pt 568 256)
+)
+(connector
+	(pt 504 272)
+	(pt 568 272)
+)
+(connector
+	(pt 568 240)
+	(pt 512 240)
+)
+(connector
+	(pt 512 240)
+	(pt 512 208)
+)
+(connector
+	(pt 664 352)
+	(pt 704 352)
+)
+(connector
+	(pt 664 336)
+	(pt 704 336)
+)
+(connector
+	(pt 664 320)
+	(pt 704 320)
+)
+(connector
+	(pt 664 304)
+	(pt 704 304)
+)
diff --git a/24_decoder/24_decoder.bsf b/24_decoder/24_decoder.bsf
new file mode 100644
index 0000000..a006694
--- /dev/null
+++ b/24_decoder/24_decoder.bsf
@@ -0,0 +1,71 @@
+/*
+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 16 112 144)
+	(text "24_decoder" (rect 5 0 73 14)(font "Arial" (font_size 8)))
+	(text "inst" (rect 8 112 25 124)(font "Arial" ))
+	(port
+		(pt 0 32)
+		(input)
+		(text "I1" (rect 0 0 9 14)(font "Arial" (font_size 8)))
+		(text "I1" (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 "I0" (rect 0 0 9 14)(font "Arial" (font_size 8)))
+		(text "I0" (rect 21 43 30 57)(font "Arial" (font_size 8)))
+		(line (pt 0 48)(pt 16 48)(line_width 1))
+	)
+	(port
+		(pt 96 32)
+		(output)
+		(text "Y3" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y3" (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 "Y2" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y2" (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 "Y1" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y1" (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 "Y0" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y0" (rect 59 75 75 89)(font "Arial" (font_size 8)))
+		(line (pt 96 80)(pt 80 80)(line_width 1))
+	)
+	(drawing
+		(rectangle (rect 16 16 80 112)(line_width 1))
+	)
+)
diff --git a/24_decoder/24_decoder.qpf b/24_decoder/24_decoder.qpf
new file mode 100644
index 0000000..dd54a2c
--- /dev/null
+++ b/24_decoder/24_decoder.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 = 15:07:03  March 31, 2022
+#
+# -------------------------------------------------------------------------- #
+
+QUARTUS_VERSION = "9.0"
+DATE = "15:07:03  March 31, 2022"
+
+# Revisions
+
+PROJECT_REVISION = "24_decoder"
diff --git a/24_decoder/24_decoder.qsf b/24_decoder/24_decoder.qsf
new file mode 100644
index 0000000..e2c503d
--- /dev/null
+++ b/24_decoder/24_decoder.qsf
@@ -0,0 +1,49 @@
+# -------------------------------------------------------------------------- #
+#
+# 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 = 15:07:03  March 31, 2022
+#
+# -------------------------------------------------------------------------- #
+#
+# Notes:
+#
+# 1) The default values for assignments are stored in the file:
+#		24_decoder_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 EP2C8Q208C7
+set_global_assignment -name TOP_LEVEL_ENTITY 24_decoder
+set_global_assignment -name ORIGINAL_QUARTUS_VERSION "9.0 SP2"
+set_global_assignment -name PROJECT_CREATION_TIME_DATE "15:07:03  MARCH 31, 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 DEVICE_FILTER_SPEED_GRADE FASTEST
+set_global_assignment -name MIN_CORE_JUNCTION_TEMP 0
+set_global_assignment -name MAX_CORE_JUNCTION_TEMP 85
+set_global_assignment -name BDF_FILE 24_decoder.bdf
\ No newline at end of file
diff --git a/24_decoder/38_decoder.bdf b/24_decoder/38_decoder.bdf
new file mode 100644
index 0000000..4f89c23
--- /dev/null
+++ b/24_decoder/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.
+*/
+//#pragma file_not_in_maxplusii_format
+(header "graphic" (version "1.3"))
+(pin
+	(input)
+	(rect 32 328 200 344)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "I0" (rect 5 0 14 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 32 240 200 256)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "I1" (rect 5 0 14 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 32 144 200 160)
+	(text "INPUT" (rect 133 0 161 10)(font "Arial" (font_size 6)))
+	(text "I2" (rect 5 0 14 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))
+	)
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+)
+(pin
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+	(pt 0 8)
+	(drawing
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+		(line (pt 82 8)(pt 78 12)(line_width 1))
+		(line (pt 78 12)(pt 82 8)(line_width 1))
+	)
+)
+(pin
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+	(rect 664 376 840 392)
+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
+	(text "Y0" (rect 90 0 104 12)(font "Arial" ))
+	(pt 0 8)
+	(drawing
+		(line (pt 0 8)(pt 52 8)(line_width 1))
+		(line (pt 52 4)(pt 78 4)(line_width 1))
+		(line (pt 52 12)(pt 78 12)(line_width 1))
+		(line (pt 52 12)(pt 52 4)(line_width 1))
+		(line (pt 78 4)(pt 82 8)(line_width 1))
+		(line (pt 82 8)(pt 78 12)(line_width 1))
+		(line (pt 78 12)(pt 82 8)(line_width 1))
+	)
+)
+(pin
+	(output)
+	(rect 664 328 840 344)
+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
+	(text "Y1" (rect 90 0 104 12)(font "Arial" ))
+	(pt 0 8)
+	(drawing
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+		(line (pt 82 8)(pt 78 12)(line_width 1))
+		(line (pt 78 12)(pt 82 8)(line_width 1))
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+(pin
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+	(text "OUTPUT" (rect 1 0 39 10)(font "Arial" (font_size 6)))
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+	(pt 0 8)
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diff --git a/24_decoder/38_decoder.bsf b/24_decoder/38_decoder.bsf
new file mode 100644
index 0000000..942dc3a
--- /dev/null
+++ b/24_decoder/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.
+*/
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diff --git a/machine_alpha/24_decoder.bdf b/machine_alpha/24_decoder.bdf
new file mode 100644
index 0000000..8f51a61
--- /dev/null
+++ b/machine_alpha/24_decoder.bdf
@@ -0,0 +1,253 @@
+/*
+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/machine_alpha/24_decoder.bsf b/machine_alpha/24_decoder.bsf
new file mode 100644
index 0000000..a006694
--- /dev/null
+++ b/machine_alpha/24_decoder.bsf
@@ -0,0 +1,71 @@
+/*
+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 16 112 144)
+	(text "24_decoder" (rect 5 0 73 14)(font "Arial" (font_size 8)))
+	(text "inst" (rect 8 112 25 124)(font "Arial" ))
+	(port
+		(pt 0 32)
+		(input)
+		(text "I1" (rect 0 0 9 14)(font "Arial" (font_size 8)))
+		(text "I1" (rect 21 27 30 41)(font "Arial" (font_size 8)))
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+	)
+	(port
+		(pt 0 48)
+		(input)
+		(text "I0" (rect 0 0 9 14)(font "Arial" (font_size 8)))
+		(text "I0" (rect 21 43 30 57)(font "Arial" (font_size 8)))
+		(line (pt 0 48)(pt 16 48)(line_width 1))
+	)
+	(port
+		(pt 96 32)
+		(output)
+		(text "Y3" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y3" (rect 59 27 75 41)(font "Arial" (font_size 8)))
+		(line (pt 96 32)(pt 80 32)(line_width 1))
+	)
+	(port
+		(pt 96 48)
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+		(text "Y2" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y2" (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 "Y1" (rect 0 0 16 14)(font "Arial" (font_size 8)))
+		(text "Y1" (rect 59 59 75 73)(font "Arial" (font_size 8)))
+		(line (pt 96 64)(pt 80 64)(line_width 1))
+	)
+	(port
+		(pt 96 80)
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+		(text "Y0" (rect 0 0 16 14)(font "Arial" (font_size 8)))
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+		(line (pt 96 80)(pt 80 80)(line_width 1))
+	)
+	(drawing
+		(rectangle (rect 16 16 80 112)(line_width 1))
+	)
+)