trait LFSR extends PRNG
Trait that defines a Linear Feedback Shift Register (LFSR).
If the user specifies a seed, then a compile-time check is added that they are not initializing the LFSR to a state which will cause it to lock up. If the user does not set a seed, then the least significant bit of the state will be set or reset based on the choice of reduction operator.
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- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- def +(other: String): String
- def ->[B](y: B): (LFSR, B)
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- def IO[T <: Data](iodef: => T)(implicit sourceInfo: SourceInfo, compileOptions: CompileOptions): T
This must wrap the datatype used to set the io field of any Module.
This must wrap the datatype used to set the io field of any Module. i.e. All concrete modules must have defined io in this form: [lazy] val io[: io type] = IO(...[: io type])
Items in [] are optional.
The granted iodef must be a chisel type and not be bound to hardware.
Also registers a Data as a port, also performing bindings. Cannot be called once ports are requested (so that all calls to ports will return the same information). Internal API.
TODO(twigg): Specifically walk the Data definition to call out which nodes are problematic.
- Attributes
- protected
- Definition Classes
- BaseModule
- def _bindIoInPlace(iodef: Data)(implicit sourceInfo: SourceInfo, compileOptions: CompileOptions): Unit
Chisel2 code didn't require the IO(...) wrapper and would assign a Chisel type directly to io, then do operations on it.
Chisel2 code didn't require the IO(...) wrapper and would assign a Chisel type directly to io, then do operations on it. This binds a Chisel type in-place (mutably) as an IO.
- Attributes
- protected
- Definition Classes
- BaseModule
- var _closed: Boolean
- Attributes
- protected
- Definition Classes
- BaseModule
- def _compatAutoWrapPorts(): Unit
Compatibility function.
Compatibility function. Allows Chisel2 code which had ports without the IO wrapper to compile under Bindings checks. Does nothing in non-compatibility mode.
Should NOT be used elsewhere. This API will NOT last.
TODO: remove this, perhaps by removing Bindings checks in compatibility mode.
- Definition Classes
- BaseModule
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def circuitName: String
- Attributes
- protected
- Definition Classes
- HasId
- final val clock: Clock
- Definition Classes
- Module
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
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- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
- val compileOptions: CompileOptions
- Definition Classes
- RawModule
- def desiredName: String
The desired name of this module (which will be used in generated FIRRTL IR or Verilog).
The desired name of this module (which will be used in generated FIRRTL IR or Verilog).
The name of a module approximates the behavior of the Java Reflection
getSimpleNamemethod https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html#getSimpleName-- with some modifications:- Anonymous modules will get an
"_Anon"tag - Modules defined in functions will use their class name and not a numeric name- Definition Classes
- BaseModule
- Note
If you want a custom or parametric name, override this method.
- def ensuring(cond: (LFSR) => Boolean, msg: => Any): LFSR
- def ensuring(cond: (LFSR) => Boolean): LFSR
- def ensuring(cond: Boolean, msg: => Any): LFSR
- def ensuring(cond: Boolean): LFSR
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(that: Any): Boolean
- Definition Classes
- HasId → AnyRef → Any
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def getCommands: Seq[Command]
- Attributes
- protected
- Definition Classes
- RawModule
- def getModulePorts: Seq[Data]
- Attributes
- protected[chisel3]
- Definition Classes
- BaseModule
- def hasSeed: Boolean
- returns
Whether either autoName or suggestName has been called
- Definition Classes
- HasId
- def hashCode(): Int
- Definition Classes
- HasId → AnyRef → Any
- def instanceName: String
Signal name (for simulation).
Signal name (for simulation).
- Definition Classes
- BaseModule → HasId → InstanceId
- val io: PRNGIO
- Definition Classes
- PRNG
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final lazy val name: String
Legalized name of this module.
Legalized name of this module.
- Definition Classes
- BaseModule
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def nextState(s: Seq[Bool]): Seq[Bool]
The method that will be used to update the state of this PRNG
The method that will be used to update the state of this PRNG
- s
input state
- returns
the next state after
stepapplications of PRNG.delta
- Definition Classes
- PRNG
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def parentModName: String
- Definition Classes
- HasId → InstanceId
- def parentPathName: String
- Definition Classes
- HasId → InstanceId
- def pathName: String
- Definition Classes
- HasId → InstanceId
- def portsContains(elem: Data): Boolean
- Attributes
- protected
- Definition Classes
- BaseModule
- def portsSize: Int
- Attributes
- protected
- Definition Classes
- BaseModule
- final val reset: Reset
- Definition Classes
- Module
- def resetValue: Vec[Bool]
Allow implementations to override the reset value, e.g., if some bits should be don't-cares.
- val seed: Option[BigInt]
- Definition Classes
- PRNG
- def suggestName(seed: => String): LFSR.this.type
Takes the first seed suggested.
Takes the first seed suggested. Multiple calls to this function will be ignored. If the final computed name conflicts with another name, it may get uniquified by appending a digit at the end.
Is a higher priority than
autoSeed, in that regardless of whetherautoSeedwas called, suggestName will always take precedence.- seed
The seed for the name of this component
- returns
this object
- Definition Classes
- HasId
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- final def toAbsoluteTarget: IsModule
Returns a FIRRTL ModuleTarget that references this object
Returns a FIRRTL ModuleTarget that references this object
- Definition Classes
- BaseModule → InstanceId
- Note
Should not be called until circuit elaboration is complete
- def toDefinition: Definition[LFSR]
- Implicit
- This member is added by an implicit conversion from LFSR toBaseModuleExtensions[LFSR] performed by method BaseModuleExtensions in chisel3.experimental.BaseModule.
- Definition Classes
- BaseModuleExtensions
- final def toNamed: ModuleName
Returns a FIRRTL ModuleName that references this object
Returns a FIRRTL ModuleName that references this object
- Definition Classes
- BaseModule → InstanceId
- Note
Should not be called until circuit elaboration is complete
- def toString(): String
- Definition Classes
- AnyRef → Any
- final def toTarget: ModuleTarget
Returns a FIRRTL ModuleTarget that references this object
Returns a FIRRTL ModuleTarget that references this object
- Definition Classes
- BaseModule → InstanceId
- Note
Should not be called until circuit elaboration is complete
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- val width: Int
- Definition Classes
- PRNG
Shadowed Implicit Value Members
- def toInstance: Instance[LFSR]
- Implicit
- This member is added by an implicit conversion from LFSR toBaseModuleExtensions[LFSR] performed by method BaseModuleExtensions in chisel3.experimental.BaseModule.
- Shadowing
- This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
To access this member you can use a type ascription:(lFSR: BaseModuleExtensions[LFSR]).toInstance
- Definition Classes
- BaseModuleExtensions
- def toInstance: Instance[LFSR]
- Implicit
- This member is added by an implicit conversion from LFSR toIsInstantiableExtensions[LFSR] performed by method IsInstantiableExtensions in chisel3.experimental.hierarchy.core.IsInstantiable.
- Shadowing
- This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
To access this member you can use a type ascription:(lFSR: IsInstantiableExtensions[LFSR]).toInstance
- Definition Classes
- IsInstantiableExtensions
Deprecated Value Members
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated
- def formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from LFSR toStringFormat[LFSR] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @deprecated @inline()
- Deprecated
(Since version 2.12.16) Use
formatString.format(value)instead ofvalue.formatted(formatString), or use thef""string interpolator. In Java 15 and later,formattedresolves to the new method in String which has reversed parameters.
- def override_clock: Option[Clock]
- Attributes
- protected
- Definition Classes
- Module
- Annotations
- @deprecated
- Deprecated
(Since version Chisel 3.5) Use withClock at Module instantiation
- def override_clock_=(rhs: Option[Clock]): Unit
- Attributes
- protected
- Definition Classes
- Module
- Annotations
- @deprecated
- Deprecated
(Since version Chisel 3.5) Use withClock at Module instantiation
- def override_reset: Option[Bool]
- Attributes
- protected
- Definition Classes
- Module
- Annotations
- @deprecated
- Deprecated
(Since version Chisel 3.5) Use withClock at Module instantiation
- def override_reset_=(rhs: Option[Bool]): Unit
- Attributes
- protected
- Definition Classes
- Module
- Annotations
- @deprecated
- Deprecated
(Since version Chisel 3.5) Use withClock at Module instantiation
- def →[B](y: B): (LFSR, B)
- Implicit
- This member is added by an implicit conversion from LFSR toArrowAssoc[LFSR] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @deprecated
- Deprecated
(Since version 2.13.0) Use
->instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.
This is the documentation for Chisel.
Package structure
The chisel3 package presents the public API of Chisel. It contains the concrete core types
UInt,SInt,Bool,FixedPoint,Clock, andReg, the abstract typesBits,Aggregate, andData, and the aggregate typesBundleandVec.The Chisel package is a compatibility layer that attempts to provide chisel2 compatibility in chisel3.
Utility objects and methods are found in the
utilpackage.The
testerspackage defines the basic interface for chisel testers.