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40 lines
967 B
40 lines
967 B
4 years ago
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include "7seg_driver";
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subdesign LED_7seg_driver (
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D[0..7][0..3], clk : input;
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dig[0..7], seg[6..0] : output;
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)
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variable
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in_buf[7..0][3..0] : DFF;
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decoder_out[7..0][7..0] : NODE;
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switcher[3..0] : DFF;
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begin
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DEFAULTS
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switcher[].d = 0;
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END DEFAULTS;
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in_buf[][].clk = clk;
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in_buf[7..0][3..0].d = D[7..0][3..0];
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switcher[].clk = clk;
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if switcher[].q == 7
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THEN
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switcher[].d = 0;
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ELSE
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switcher[].d = switcher[].q + 1;
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END IF;
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CASE switcher[].q IS
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WHEN 0 => dig[] = 0; seg[] = 7seg_driver(in_buf[0][].q);
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WHEN 1 => dig[] = 1; seg[] = 7seg_driver(in_buf[1][].q);
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WHEN 2 => dig[] = 2; seg[] = 7seg_driver(in_buf[2][].q);
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WHEN 3 => dig[] = 3; seg[] = 7seg_driver(in_buf[3][].q);
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WHEN 4 => dig[] = 4; seg[] = 7seg_driver(in_buf[4][].q);
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WHEN 5 => dig[] = 5; seg[] = 7seg_driver(in_buf[5][].q);
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WHEN 6 => dig[] = 6; seg[] = 7seg_driver(in_buf[6][].q);
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WHEN 7 => dig[] = 7; seg[] = 7seg_driver(in_buf[7][].q);
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END CASE;
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end;
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