NBcache works with associativities other than powers of 2
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@ -14,7 +14,13 @@ class ioReplacementWayGen extends Bundle {
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class RandomReplacementWayGen extends Component {
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val io = new ioReplacementWayGen()
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//TODO: Actually limit selection based on which ways are allowed (io.ways_en)
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if(NWAYS > 1) io.way_id := LFSR16(io.pick_new_way)(log2up(NWAYS)-1,0)
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if(NWAYS > 1)
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{
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val rand_way_id = UFix(width = log2up(NWAYS))
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rand_way_id := LFSR16(io.pick_new_way)(log2up(NWAYS)-1,0)
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when (rand_way_id >= UFix(NWAYS, width = log2up(NWAYS))) { io.way_id := UFix(0, width = log2up(NWAYS)) }
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.otherwise { io.way_id := rand_way_id }
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}
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else io.way_id := UFix(0)
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}
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