52 lines
1.1 KiB
Scala
52 lines
1.1 KiB
Scala
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package Top
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{
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import Chisel._
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import Node._;
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import scala.math._;
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class ioPriorityDecoder(in_width: Int, out_width: Int) extends Bundle
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{
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val in = UFix(in_width, 'input);
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val out = Bits(out_width, 'output);
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}
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class priorityDecoder(width: Int) extends Component
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{
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val in_width = ceil(log10(width)/log10(2)).toInt;
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val io = new ioPriorityEncoder(in_width, width);
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val l_out = Wire() { Bits() };
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for (i <- 0 to width-1) {
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when (io.in === UFix(i, in_width)) {
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l_out <== Bits(1,1) << UFix(i);
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}
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}
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l_out <== Bits(0, width);
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io.out := l_out;
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}
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class ioPriorityEncoder(in_width: Int, out_width: Int) extends Bundle
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{
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val in = Bits(in_width, 'input);
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val out = UFix(out_width, 'output);
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}
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class priorityEncoder(width: Int) extends Component
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{
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val out_width = ceil(log10(width)/log10(2)).toInt;
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val io = new ioPriorityDecoder(width, out_width);
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val l_out = Wire() { UFix() };
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for (i <- 0 to width-1) {
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when (io.in(i).toBool) {
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l_out <== UFix(i, out_width);
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}
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}
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l_out <== UFix(0, out_width);
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io.out := l_out;
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}
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}
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