keyboard.bdf

是一些很好的FPGA设计实例

		(input)
		(text "CLKB" (rect 20 82 51 96)(font "Arial" (font_size 8)))
		(text "CLKB" (rect 20 82 51 96)(font "Arial" (font_size 8)))
		(line (pt 0 88)(pt 16 88)(line_width 1))
	)
	(port
		(pt 120 56)
		(output)
		(text "QC" (rect 86 50 103 64)(font "Arial" (font_size 8)))
		(text "QC" (rect 86 50 103 64)(font "Arial" (font_size 8)))
		(line (pt 104 56)(pt 120 56)(line_width 1))
	)
	(port
		(pt 120 40)
		(output)
		(text "QB" (rect 86 34 103 48)(font "Arial" (font_size 8)))
		(text "QB" (rect 86 34 103 48)(font "Arial" (font_size 8)))
		(line (pt 104 40)(pt 120 40)(line_width 1))
	)
	(port
		(pt 120 24)
		(output)
		(text "QA" (rect 86 18 104 32)(font "Arial" (font_size 8)))
		(text "QA" (rect 86 18 104 32)(font "Arial" (font_size 8)))
		(line (pt 104 24)(pt 120 24)(line_width 1))
	)
	(port
		(pt 120 72)
		(output)
		(text "QD" (rect 86 66 103 80)(font "Arial" (font_size 8)))
		(text "QD" (rect 86 66 103 80)(font "Arial" (font_size 8)))
		(line (pt 104 72)(pt 120 72)(line_width 1))
	)
	(drawing
		(text "COUNTER" (rect 34 98 90 112)(font "Arial" (font_size 8)))
		(line (pt 16 96)(pt 104 96)(line_width 1))
		(line (pt 16 16)(pt 104 16)(line_width 1))
		(line (pt 104 96)(pt 104 16)(line_width 1))
		(line (pt 16 96)(pt 16 16)(line_width 1))
	)
)
(symbol
	(rect 32 424 64 456)
	(text "GND" (rect 8 6 29 16)(font "Arial" (font_size 6)))
	(text "inst6" (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)
)
(symbol
	(rect 264 304 440 400)
	(text "CONTROL1" (rect 5 0 69 14)(font "Arial" (font_size 8)))
	(text "inst3" (rect 8 80 31 92)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "dout[3..0]" (rect 0 0 53 14)(font "Arial" (font_size 8)))
		(text "dout[3..0]" (rect 21 27 74 41)(font "Arial" (font_size 8)))
		(line (pt 0 32)(pt 16 32)(line_width 3))
	)
	(port
		(pt 0 48)
		(input)
		(text "en" (rect 0 0 14 14)(font "Arial" (font_size 8)))
		(text "en" (rect 21 43 35 57)(font "Arial" (font_size 8)))
		(line (pt 0 48)(pt 16 48)(line_width 1))
	)
	(port
		(pt 0 64)
		(input)
		(text "CLK" (rect 0 0 23 14)(font "Arial" (font_size 8)))
		(text "CLK" (rect 21 59 44 73)(font "Arial" (font_size 8)))
		(line (pt 0 64)(pt 16 64)(line_width 1))
	)
	(port
		(pt 176 32)
		(output)
		(text "DATA[23..0]" (rect 0 0 69 14)(font "Arial" (font_size 8)))
		(text "DATA[23..0]" (rect 86 27 155 41)(font "Arial" (font_size 8)))
		(line (pt 176 32)(pt 160 32)(line_width 3))
	)
	(port
		(pt 176 48)
		(output)
		(text "cfm" (rect 0 0 21 14)(font "Arial" (font_size 8)))
		(text "cfm" (rect 134 43 155 57)(font "Arial" (font_size 8)))
		(line (pt 176 48)(pt 160 48)(line_width 1))
	)
	(port
		(pt 176 64)
		(output)
		(text "shift" (rect 0 0 24 14)(font "Arial" (font_size 8)))
		(text "shift" (rect 131 59 155 73)(font "Arial" (font_size 8)))
		(line (pt 176 64)(pt 160 64)(line_width 1))
	)
	(drawing
		(rectangle (rect 16 16 160 80)(line_width 1))
	)
)
(symbol
	(rect 312 432 440 656)
	(text "smdisplay" (rect 5 0 61 14)(font "Arial" (font_size 8)))
	(text "inst4" (rect 8 208 31 220)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "D[31..0]" (rect 0 0 43 14)(font "Arial" (font_size 8)))
		(text "D[31..0]" (rect 21 27 64 41)(font "Arial" (font_size 8)))
		(line (pt 0 32)(pt 16 32)(line_width 3))
	)
	(port
		(pt 0 48)
		(input)
		(text "A" (rect 0 0 9 14)(font "Arial" (font_size 8)))
		(text "A" (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 "B" (rect 0 0 8 14)(font "Arial" (font_size 8)))
		(text "B" (rect 21 59 29 73)(font "Arial" (font_size 8)))
		(line (pt 0 64)(pt 16 64)(line_width 1))
	)
	(port
		(pt 0 80)
		(input)
		(text "C" (rect 0 0 8 14)(font "Arial" (font_size 8)))
		(text "C" (rect 21 75 29 89)(font "Arial" (font_size 8)))
		(line (pt 0 80)(pt 16 80)(line_width 1))
	)
	(port
		(pt 0 96)
		(input)
		(text "clk" (rect 0 0 15 14)(font "Arial" (font_size 8)))
		(text "clk" (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 "CLRN" (rect 0 0 31 14)(font "Arial" (font_size 8)))
		(text "CLRN" (rect 21 107 52 121)(font "Arial" (font_size 8)))
		(line (pt 0 112)(pt 16 112)(line_width 1))
	)
	(port
		(pt 128 32)
		(output)
		(text "SEL0" (rect 0 0 29 14)(font "Arial" (font_size 8)))
		(text "SEL0" (rect 78 27 107 41)(font "Arial" (font_size 8)))
		(line (pt 128 32)(pt 112 32)(line_width 1))
	)
	(port
		(pt 128 48)
		(output)
		(text "SEL1" (rect 0 0 29 14)(font "Arial" (font_size 8)))
		(text "SEL1" (rect 78 43 107 57)(font "Arial" (font_size 8)))
		(line (pt 128 48)(pt 112 48)(line_width 1))
	)
	(port
		(pt 128 64)
		(output)
		(text "SEL2" (rect 0 0 29 14)(font "Arial" (font_size 8)))
		(text "SEL2" (rect 78 59 107 73)(font "Arial" (font_size 8)))
		(line (pt 128 64)(pt 112 64)(line_width 1))
	)
	(port
		(pt 128 80)
		(output)
		(text "OA" (rect 0 0 18 14)(font "Arial" (font_size 8)))
		(text "OA" (rect 89 75 107 89)(font "Arial" (font_size 8)))
		(line (pt 128 80)(pt 112 80)(line_width 1))
	)
	(port
		(pt 128 96)
		(output)
		(text "OB" (rect 0 0 17 14)(font "Arial" (font_size 8)))
		(text "OB" (rect 90 91 107 105)(font "Arial" (font_size 8)))
		(line (pt 128 96)(pt 112 96)(line_width 1))
	)
	(port
		(pt 128 112)
		(output)
		(text "OC" (rect 0 0 17 14)(font "Arial" (font_size 8)))
		(text "OC" (rect 90 107 107 121)(font "Arial" (font_size 8)))
		(line (pt 128 112)(pt 112 112)(line_width 1))
	)
	(port
		(pt 128 128)
		(output)
		(text "OD" (rect 0 0 17 14)(font "Arial" (font_size 8)))
		(text "OD" (rect 90 123 107 137)(font "Arial" (font_size 8)))
		(line (pt 128 128)(pt 112 128)(line_width 1))
	)
	(port
		(pt 128 144)
		(output)
		(text "OE" (rect 0 0 16 14)(font "Arial" (font_size 8)))
		(text "OE" (rect 91 139 107 153)(font "Arial" (font_size 8)))
		(line (pt 128 144)(pt 112 144)(line_width 1))
	)
	(port
		(pt 128 160)
		(output)
		(text "OF" (rect 0 0 16 14)(font "Arial" (font_size 8)))
		(text "OF" (rect 91 155 107 169)(font "Arial" (font_size 8)))
		(line (pt 128 160)(pt 112 160)(line_width 1))
	)
	(port
		(pt 128 176)
		(output)
		(text "OG" (rect 0 0 18 14)(font "Arial" (font_size 8)))
		(text "OG" (rect 89 171 107 185)(font "Arial" (font_size 8)))
		(line (pt 128 176)(pt 112 176)(line_width 1))
	)
	(drawing
		(rectangle (rect 16 16 112 208)(line_width 1))
	)
)
(connector
	(text "d[3..0]" (rect 162 120 193 132)(font "Arial" ))
	(pt 152 136)
	(pt 200 136)
	(bus)
)
(connector
	(text "d[3]" (rect 66 216 84 228)(font "Arial" ))
	(pt 56 232)
	(pt 152 232)
)
(connector
	(text "d[2]" (rect 66 232 84 244)(font "Arial" ))
	(pt 56 248)
	(pt 152 248)
)
(connector
	(text "d[1]" (rect 66 248 84 260)(font "Arial" ))
	(pt 56 264)
	(pt 152 264)
)
(connector
	(text "d[0]" (rect 66 264 84 276)(font "Arial" ))
	(pt 56 280)
	(pt 152 280)
)
(connector
	(pt 240 24)
	(pt 312 24)
)
(connector
	(pt 216 256)
	(pt 240 256)
)
(connector
	(pt 240 256)
	(pt 360 256)
)
(connector
	(text "d[7..4]" (rect 426 8 457 20)(font "Arial" ))
	(pt 408 24)
	(pt 456 24)
	(bus)
)
(connector
	(text "dout[3..0]" (rect 458 104 505 116)(font "Arial" ))
	(pt 448 120)
	(pt 504 120)
	(bus)
)
(connector
	(text "dout[3..0]" (rect 226 320 273 332)(font "Arial" ))
	(pt 224 336)
	(pt 264 336)
	(bus)
)
(connector
	(pt 240 24)
	(pt 240 256)
)
(connector
	(pt 240 256)
	(pt 240 352)
)
(connector
	(pt 240 352)
	(pt 264 352)
)
(connector
	(text "d[7..0]" (rect 274 120 305 132)(font "Arial" ))
	(pt 280 136)
	(pt 312 136)
	(bus)
)
(connector
	(pt 312 40)
	(pt 264 40)
)
(connector
	(pt 264 120)
	(pt 312 120)
)
(connector
	(pt 264 120)
	(pt 264 40)
)
(connector
	(pt 264 40)
	(pt 264 -24)
)
(connector
	(text "clk" (rect 162 -40 176 -28)(font "Arial" ))
	(pt 264 -24)
	(pt 152 -24)
)
(connector
	(pt 208 496)
	(pt 312 496)
)
(connector
	(pt 208 512)
	(pt 312 512)
)
(connector
	(pt 224 480)
	(pt 224 424)
)
(connector
	(pt 224 424)
	(pt 72 424)
)
(connector
	(pt 208 480)
	(pt 224 480)
)
(connector
	(pt 224 480)
	(pt 312 480)
)
(connector
	(pt 72 424)
	(pt 72 544)
)
(connector
	(pt 72 544)
	(pt 88 544)
)
(connector
	(pt 88 480)
	(pt 48 480)
)
(connector
	(pt 88 496)
	(pt 48 496)
)
(connector
	(pt 48 496)
	(pt 48 480)
)
(connector
	(pt 48 480)
	(pt 48 456)
)
(connector
	(pt 440 464)
	(pt 480 464)
)
(connector
	(pt 440 480)
	(pt 480 480)
)
(connector
	(pt 440 496)
	(pt 480 496)
)
(connector
	(pt 264 528)
	(pt 312 528)
)
(connector
	(pt 264 528)
	(pt 264 592)
)
(connector
	(pt 24 528)
	(pt 24 592)
)
(connector
	(pt 24 592)
	(pt 264 592)
)
(connector
	(pt 8 528)
	(pt 24 528)
)
(connector
	(text "clk" (rect 34 512 48 524)(font "Arial" ))
	(pt 24 528)
	(pt 88 528)
)
(connector
	(text "<<__$DEF_ALIAS1281>>" (rect 440 320 563 332)(font "Arial" )(invisible))
	(pt 464 336)
	(pt 440 336)
	(bus)
)
(connector
	(text "a[23..0]" (rect 448 366 460 403)(font "Arial" )(vertical))
	(pt 464 336)
	(pt 464 408)
	(bus)
)
(connector
	(text "a[31..0]" (rect 241 421 253 458)(font "Arial" )(vertical))
	(pt 256 408)
	(pt 256 464)
	(bus)
)
(connector
	(text "<<__$DEF_ALIAS1283>>" (rect 274 448 397 460)(font "Arial" )(invisible))
	(pt 256 464)
	(pt 312 464)
	(bus)
)
(connector
	(pt 168 368)
	(pt 264 368)
)
(connector
	(pt 440 352)
	(pt 504 352)
)
(connector
	(pt 504 368)
	(pt 504 376)
)
(connector
	(text "shift" (rect 288 528 310 540)(font "Arial" ))
	(pt 312 544)
	(pt 288 544)
)
(connector
	(text "shift" (rect 474 352 496 364)(font "Arial" ))
	(pt 440 368)
	(pt 504 368)
)
(junction (pt 264 40))
(junction (pt 240 256))
(junction (pt 224 480))
(junction (pt 48 480))
(junction (pt 24 528))