alu.bsf

实现了CPU的基本功能

/*
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) 1991-2005 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 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 16 224 144)
	(text "ALU" (rect 5 0 26 12)(font "Arial" ))
	(text "inst" (rect 8 112 25 124)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "reset" (rect 0 0 24 12)(font "Arial" ))
		(text "reset" (rect 21 27 45 39)(font "Arial" ))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "clk" (rect 0 0 14 12)(font "Arial" ))
		(text "clk" (rect 21 43 35 55)(font "Arial" ))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 0 64)
		(input)
		(text "BR_DATA[15..0]" (rect 0 0 81 12)(font "Arial" ))
		(text "BR_DATA[15..0]" (rect 21 59 102 71)(font "Arial" ))
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		(text "ACC_DATA[15..0]" (rect 21 75 110 87)(font "Arial" ))
		(line (pt 0 80)(pt 16 80)(line_width 3))
	)
	(port
		(pt 0 96)
		(input)
		(text "CBR_DATA[11..0]" (rect 0 0 89 12)(font "Arial" ))
		(text "CBR_DATA[11..0]" (rect 21 91 110 103)(font "Arial" ))
		(line (pt 0 96)(pt 16 96)(line_width 3))
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		(output)
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		(text "ACC[15..0]" (rect 132 27 187 39)(font "Arial" ))
		(line (pt 208 32)(pt 192 32)(line_width 3))
	)
	(port
		(pt 208 48)
		(output)
		(text "MR[15..0]" (rect 0 0 48 12)(font "Arial" ))
		(text "MR[15..0]" (rect 139 43 187 55)(font "Arial" ))
		(line (pt 208 48)(pt 192 48)(line_width 3))
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	(port
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		(output)
		(text "FLAGS[1..0]" (rect 0 0 61 12)(font "Arial" ))
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	)
	(drawing
		(rectangle (rect 16 16 192 112)(line_width 1))
	)
)