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* Make "def width" a private API; expose isWidthKnown instead
Resolves #256.
Since width was used to determine whether getWidth would succeed, I added
def isWidthKnown: Boolean
but another option would be to expose something like
def widthOption: Option[Int]
...thoughts?
* Document getWidth/isWidthKnown
* Add widthOption for more idiomatic Scala manipulation of widths
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Remove .Lit(x) usage.
Undo "private" scope change.
Change "firing" back to "fire".
Add package level NODIR definition.
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Still fails one test - DirectionSpec in Direction.scala
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For Chisel nodes defined in Module class-level values of type Option or
Iterable, we can still use reflection to assign names based on the name
of the value. This works for arbitrary nesting of Option and Iterable so
long as the innermost type is HasId. Note that this excludes Maps which
always have an innermost type of Tuple2[_,_].
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Need to convert UInt(x) into UInt.Lit(x) or UInt.width(x)
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Compiles but fails tests.
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because the sole remaining use of toBits in chiselTests was to compare to Vectors declared differently but with same underlying bits.
Making at toBits was problematic because it did not support === method.
Changed Vec and Bundle to both support toUInt()
Note: If toBits is actually needed now, one can use toInt().toBits()
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* chiselTests: include an example of two empty Vectors killing FIRRTL
* Aggregate: fix a bug whereby Vec[T] was using equals/hashCode of Seq
In Chisel, two vectors are NOT equal just if their contents are equal.
For example, two empty vectors should not be considered equal. This
patch makes Vec use the HasId._id for equality like other Chisel types.
Without this fix, Bundle.namedElts.seen: HashSet[Data]() will eliminate
one of the named vectors and emit bad IR.
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This prevents Verilator from erroring when it cannot determine the top-module.
It also changes the PRINTF_COND guard to correctly use the top-level reset
instead of just the top of the Chisel-generated code.
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Closes #90
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The old blackbox behavior still emitted extmodules that have a
clk, reset pin and prepended all io's with io_ (ultimately). Most
verilog modules do not follow this distinction (or use a slightly
different name for clock and so on).
Thus, instead BlackBox has been rewritten to not assume a clk or
reset pin. Instead, the io Bundle specified is flattened directly
into the Module.ports declaration. The tests have been rewritten
to compensate for this. Also, added a test that uses the clock pin.
As a secondary change, the _clock and _reset module parameters were
bad for two reasons. One, they used null as a default, which is a
scala best practices violation. Two, they were just not good names.
Instead the primary constructor has been rewritten to take an
Option[Clock] called override_clock and an Option[Bool] called
override_reset, which default to None. (Note how the getOrElse call
down below is much more natural now.)
However, users may not want to specify the Some(their_clock) so I
also added secondary constructors that take parameters named clock
and reset and wrap them into Some calls into the primary constructor.
This is a better UX because now you can just stipulate clock=blah in
instantiation of that module in symmetry with using the clock in the
definition of the module by invoking clock.
PS: We could also back out of allowing any overrides via the Module
constructor and just require the instantiating Module to do
submodule.clock := newclock, etc.
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One could make an argument for disallowing n=0, too, but HW generators
will benefit from our leniency.
Closes #107. Thanks @jackkoenig
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for DeqIO and EnqIO initialization is likely to change.
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Make the corresponding test run faster by giving it a Counter.
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EnqIO bundles
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Cleanup comment for finish method in BasicTester, and finishWrapper in TesterDriver.
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clean up the test example
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subclass which allows tester to have clean up and other construction code executed after a user code executed during constructor of that subclass
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clonable
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input port
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