8.bdf

实现对ad的控制并用7279芯片进行显示

		(output)
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		(text "dataout4[6..0]" (rect 87 171 155 183)(font "Arial" ))
		(line (pt 176 176)(pt 160 176)(line_width 3))
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		(rectangle (rect 16 16 160 208)(line_width 1))
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(symbol
	(rect 520 192 704 384)
	(text "hd7279" (rect 5 0 40 12)(font "Arial" ))
	(text "inst" (rect 8 176 25 188)(font "Arial" ))
	(port
		(pt 0 32)
		(input)
		(text "CLK" (rect 0 0 21 12)(font "Arial" ))
		(text "CLK" (rect 21 27 42 39)(font "Arial" ))
		(line (pt 0 32)(pt 16 32)(line_width 1))
	)
	(port
		(pt 0 48)
		(input)
		(text "RST_N" (rect 0 0 35 12)(font "Arial" ))
		(text "RST_N" (rect 21 43 56 55)(font "Arial" ))
		(line (pt 0 48)(pt 16 48)(line_width 1))
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	(port
		(pt 0 64)
		(input)
		(text "D_BUS1[6..0]" (rect 0 0 68 12)(font "Arial" ))
		(text "D_BUS1[6..0]" (rect 21 59 89 71)(font "Arial" ))
		(line (pt 0 64)(pt 16 64)(line_width 3))
	)
	(port
		(pt 0 80)
		(input)
		(text "D_BUS2[6..0]" (rect 0 0 68 12)(font "Arial" ))
		(text "D_BUS2[6..0]" (rect 21 75 89 87)(font "Arial" ))
		(line (pt 0 80)(pt 16 80)(line_width 3))
	)
	(port
		(pt 0 96)
		(input)
		(text "D_BUS3[6..0]" (rect 0 0 68 12)(font "Arial" ))
		(text "D_BUS3[6..0]" (rect 21 91 89 103)(font "Arial" ))
		(line (pt 0 96)(pt 16 96)(line_width 3))
	)
	(port
		(pt 0 112)
		(input)
		(text "key7279" (rect 0 0 42 12)(font "Arial" ))
		(text "key7279" (rect 21 107 63 119)(font "Arial" ))
		(line (pt 0 112)(pt 16 112)(line_width 1))
	)
	(port
		(pt 0 128)
		(input)
		(text "abc[2..0]" (rect 0 0 43 12)(font "Arial" ))
		(text "abc[2..0]" (rect 21 123 64 135)(font "Arial" ))
		(line (pt 0 128)(pt 16 128)(line_width 3))
	)
	(port
		(pt 0 144)
		(input)
		(text "D_BUS4[6..0]" (rect 0 0 68 12)(font "Arial" ))
		(text "D_BUS4[6..0]" (rect 21 139 89 151)(font "Arial" ))
		(line (pt 0 144)(pt 16 144)(line_width 3))
	)
	(port
		(pt 184 32)
		(output)
		(text "CLK7279" (rect 0 0 44 12)(font "Arial" ))
		(text "CLK7279" (rect 119 27 163 39)(font "Arial" ))
		(line (pt 184 32)(pt 168 32)(line_width 1))
	)
	(port
		(pt 184 48)
		(output)
		(text "clk2" (rect 0 0 20 12)(font "Arial" ))
		(text "clk2" (rect 143 43 163 55)(font "Arial" ))
		(line (pt 184 48)(pt 168 48)(line_width 1))
	)
	(port
		(pt 184 64)
		(output)
		(text "CS7279" (rect 0 0 38 12)(font "Arial" ))
		(text "CS7279" (rect 125 59 163 71)(font "Arial" ))
		(line (pt 184 64)(pt 168 64)(line_width 1))
	)
	(port
		(pt 184 96)
		(output)
		(text "channel[2..0]" (rect 0 0 63 12)(font "Arial" ))
		(text "channel[2..0]" (rect 100 91 163 103)(font "Arial" ))
		(line (pt 184 96)(pt 168 96)(line_width 3))
	)
	(port
		(pt 184 80)
		(bidir)
		(text "DAT7279" (rect 0 0 44 12)(font "Arial" ))
		(text "DAT7279" (rect 119 75 163 87)(font "Arial" ))
		(line (pt 184 80)(pt 168 80)(line_width 1))
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		(rectangle (rect 16 16 168 176)(line_width 1))
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(connector
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	(pt 408 264)
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(connector
	(pt 336 280)
	(pt 400 280)
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(connector
	(pt 336 296)
	(pt 392 296)
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(connector
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	(pt 376 312)
)
(connector
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	(pt 344 344)
	(bus)
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	(pt 408 464)
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(connector
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(connector
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(connector
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	(pt 736 224)
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(connector
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(connector
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(connector
	(pt 704 288)
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	(bus)
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(connector
	(pt 736 392)
	(pt 768 392)
	(bus)
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(connector
	(pt 520 304)
	(pt 480 304)
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(connector
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(connector
	(pt 144 440)
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(connector
	(pt 160 280)
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	(bus)
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(connector
	(pt 136 416)
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	(bus)
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(connector
	(pt 736 416)
	(pt 136 416)
	(bus)
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(connector
	(pt 736 288)
	(pt 736 392)
	(bus)
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(connector
	(pt 736 392)
	(pt 736 416)
	(bus)
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(connector
	(pt 336 328)
	(pt 464 328)
	(bus)
)
(connector
	(pt 464 328)
	(pt 464 320)
	(bus)
)
(connector
	(pt 464 320)
	(pt 520 320)
	(bus)
)
(connector
	(pt 784 272)
	(pt 784 280)
)
(connector
	(pt 784 280)
	(pt 792 280)
)
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	(pt 704 272)
	(pt 784 272)
)
(connector
	(pt 336 360)
	(pt 512 360)
	(bus)
)
(connector
	(pt 512 360)
	(pt 512 336)
	(bus)
)
(connector
	(pt 512 336)
	(pt 520 336)
	(bus)
)
(junction (pt 136 248))
(junction (pt 112 216))
(junction (pt 736 392))