diff options
| author | Jim Lawson | 2016-06-20 11:08:46 -0700 |
|---|---|---|
| committer | Jim Lawson | 2016-06-20 11:08:46 -0700 |
| commit | d408d73a171535bd7c2ba9d0037c194022b8a62f (patch) | |
| tree | 81885a99ec56e89532bc3fa338f22b163dcc4d1f /src/main/scala/chisel/util/Mux.scala | |
| parent | b5a534914795d9d17f4dfe623525f1b804e4c60f (diff) | |
Rename chisel3 package.
Diffstat (limited to 'src/main/scala/chisel/util/Mux.scala')
| -rw-r--r-- | src/main/scala/chisel/util/Mux.scala | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/src/main/scala/chisel/util/Mux.scala b/src/main/scala/chisel/util/Mux.scala deleted file mode 100644 index 6f074a7e..00000000 --- a/src/main/scala/chisel/util/Mux.scala +++ /dev/null @@ -1,64 +0,0 @@ -// See LICENSE for license details. - -/** Mux circuit generators. - */ - -package chisel.util - -import chisel._ -import chisel.core.SeqUtils - -/** Builds a Mux tree out of the input signal vector using a one hot encoded - select signal. Returns the output of the Mux tree. - */ -object Mux1H -{ - def apply[T <: Data](sel: Seq[Bool], in: Seq[T]): T = - apply(sel zip in) - def apply[T <: Data](in: Iterable[(Bool, T)]): T = SeqUtils.oneHotMux(in) - def apply[T <: Data](sel: UInt, in: Seq[T]): T = - apply((0 until in.size).map(sel(_)), in) - def apply(sel: UInt, in: UInt): Bool = (sel & in).orR -} - -/** Builds a Mux tree under the assumption that multiple select signals - can be enabled. Priority is given to the first select signal. - - Returns the output of the Mux tree. - */ -object PriorityMux -{ - def apply[T <: Data](in: Seq[(Bool, T)]): T = SeqUtils.priorityMux(in) - def apply[T <: Data](sel: Seq[Bool], in: Seq[T]): T = apply(sel zip in) - def apply[T <: Data](sel: Bits, in: Seq[T]): T = apply((0 until in.size).map(sel(_)), in) -} - -/** MuxLookup creates a cascade of n Muxs to search for a key value */ -object MuxLookup { - /** @param key a key to search for - * @param default a default value if nothing is found - * @param mapping a sequence to search of keys and values - * @return the value found or the default if not - */ - def apply[S <: UInt, T <: Bits] (key: S, default: T, mapping: Seq[(S, T)]): T = { - var res = default - for ((k, v) <- mapping.reverse) - res = Mux(k === key, v, res) - res - } - -} - -/** MuxCase returns the first value that is enabled in a map of values */ -object MuxCase { - /** @param default the default value if none are enabled - * @param mapping a set of data values with associated enables - * @return the first value in mapping that is enabled */ - def apply[T <: Bits] (default: T, mapping: Seq[(Bool, T)]): T = { - var res = default - for ((t, v) <- mapping.reverse){ - res = Mux(t, v, res) - } - res - } -} |
