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diff --git a/megacells/accum32.bsf b/megacells/accum32.bsf
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+/*
+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) 1991-2003 Altera Corporation
+Any megafunction design, and related netlist (encrypted or decrypted),
+support information, device programming or simulation file, and any other
+associated documentation or information provided by Altera or a partner
+under Altera's Megafunction Partnership Program may be used only
+to program PLD devices (but not masked PLD devices) from Altera. Any
+other use of such megafunction design, netlist, support information,
+device programming or simulation file, or any other related documentation
+or information is prohibited for any other purpose, including, but not
+limited to modification, reverse engineering, de-compiling, or use with
+any other silicon devices, unless such use is explicitly licensed under
+a separate agreement with Altera or a megafunction partner. Title to the
+intellectual property, including patents, copyrights, trademarks, trade
+secrets, or maskworks, embodied in any such megafunction design, netlist,
+support information, device programming or simulation file, or any other
+related documentation or information provided by Altera or a megafunction
+partner, remains with Altera, the megafunction partner, or their respective
+licensors. No other licenses, including any licenses needed under any third
+party's intellectual property, are provided herein.
+*/
+(header "symbol" (version "1.1"))
+(symbol
+ (rect 0 0 240 120)
+ (text "accum32" (rect 87 2 166 21)(font "Arial" (font_size 10)))
+ (text "inst" (rect 8 101 31 116)(font "Arial" ))
+ (port
+ (pt 0 40)
+ (input)
+ (text "data[31..0]" (rect 0 0 73 16)(font "Arial" (font_size 8)))
+ (text "data[31..0]" (rect 20 24 82 40)(font "Arial" (font_size 8)))
+ (line (pt 0 40)(pt 16 40)(line_width 3))
+ )
+ (port
+ (pt 0 56)
+ (input)
+ (text "clock" (rect 0 0 36 16)(font "Arial" (font_size 8)))
+ (text "clock" (rect 20 40 51 56)(font "Arial" (font_size 8)))
+ (line (pt 0 56)(pt 16 56)(line_width 1))
+ )
+ (port
+ (pt 0 72)
+ (input)
+ (text "clken" (rect 0 0 36 16)(font "Arial" (font_size 8)))
+ (text "clken" (rect 20 56 51 72)(font "Arial" (font_size 8)))
+ (line (pt 0 72)(pt 16 72)(line_width 1))
+ )
+ (port
+ (pt 0 96)
+ (input)
+ (text "aclr" (rect 0 0 24 16)(font "Arial" (font_size 8)))
+ (text "aclr" (rect 20 80 41 96)(font "Arial" (font_size 8)))
+ (line (pt 0 96)(pt 16 96)(line_width 1))
+ )
+ (port
+ (pt 240 56)
+ (output)
+ (text "result[31..0]" (rect 0 0 81 16)(font "Arial" (font_size 8)))
+ (text "result[31..0]" (rect 152 40 221 56)(font "Arial" (font_size 8)))
+ (line (pt 240 56)(pt 224 56)(line_width 3))
+ )
+ (drawing
+ (text "acc" (rect 102 48 123 64)(font "Arial" (font_size 8)))
+ (text "SIGNED" (rect 177 18 214 32)(font "Arial" ))
+ (line (pt 16 16)(pt 224 16)(line_width 1))
+ (line (pt 16 16)(pt 16 104)(line_width 1))
+ (line (pt 16 104)(pt 224 104)(line_width 1))
+ (line (pt 224 16)(pt 224 104)(line_width 1))
+ (line (pt 88 24)(pt 136 48)(line_width 1))
+ (line (pt 136 64)(pt 136 48)(line_width 1))
+ (line (pt 88 88)(pt 136 64)(line_width 1))
+ (line (pt 88 24)(pt 88 88)(line_width 1))
+ (line (pt 16 40)(pt 88 40)(line_width 1))
+ (line (pt 16 56)(pt 88 56)(line_width 1))
+ (line (pt 136 56)(pt 224 56)(line_width 1))
+ (line (pt 16 72)(pt 88 72)(line_width 1))
+ (line (pt 16 72)(pt 88 72)(line_width 1))
+ (line (pt 16 96)(pt 104 96)(line_width 1))
+ (line (pt 104 96)(pt 104 80)(line_width 1))
+ )
+)