package hardcaml_xilinx

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package hardcaml_xilinx
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Statemachine for clearing a RAM via one of it's ports.

type 'a t = {
  1. port : 'a Ram_port.t;
  2. clear_busy : 'a;
}

This wraps a Ram_port.t with a small state machine that on clear sets all memory location values to the clear_to value. While the memory is being cleared, the output clear_busy will be high. Writes and reads while in this state will be ignored.

The port signals require an extra mutliplexer delay for this function.

Note that use of other ports on the RAM for writing is discouraged during the clear operation. For maximum safety one can guard the write enable to the other port with

{other_port.write_enable &: ~:port_with_clear.clear_busy}

include Ppx_deriving_hardcaml_runtime.Interface.S with type 'a t := 'a t
val sexp_of_t : ('a -> Sexplib0.Sexp.t) -> 'a t -> Sexplib0.Sexp.t
val iter : 'a t -> f:('a -> Base.unit) -> Base.unit
val iter2 : 'a t -> 'b t -> f:('a -> 'b -> Base.unit) -> Base.unit
val map : 'a t -> f:('a -> 'b) -> 'b t
val map2 : 'a t -> 'b t -> f:('a -> 'b -> 'c) -> 'c t
val to_list : 'a t -> 'a Base.list
val port_names_and_widths : (Base.string * Base.int) t
include Base.Equal.S1 with type 'a t := 'a t
val equal : 'a Base__Equal.equal -> 'a t Base__Equal.equal
val port_names : Base.string t

RTL names specified in the interface definition - commonly also the OCaml field name.

val port_widths : Base.int t

Bit widths specified in the interface definition.

val const : 'a -> 'a t

const x sets each port to x

type tag
val tags : tag t
val to_alist : 'a t -> (tag * 'a) Base.list

Create association list indexed by tag.

val of_alist : (tag * 'a) Base.list -> 'a t

Create interface from association list indexed by tag.

val sum_of_port_widths : Base.int

Sum of all port widths specified in the interface definition.

module Unsafe_assoc_by_port_name : sig ... end
val zip : 'a t -> 'b t -> ('a * 'b) t
val zip3 : 'a t -> 'b t -> 'c t -> ('a * 'b * 'c) t
val zip4 : 'a t -> 'b t -> 'c t -> 'd t -> ('a * 'b * 'c * 'd) t
val zip5 : 'a t -> 'b t -> 'c t -> 'd t -> 'e t -> ('a * 'b * 'c * 'd * 'e) t
val map3 : 'a t -> 'b t -> 'c t -> f:('a -> 'b -> 'c -> 'd) -> 'd t
val map4 : 'a t -> 'b t -> 'c t -> 'd t -> f:('a -> 'b -> 'c -> 'd -> 'e) -> 'e t
val map5 : 'a t -> 'b t -> 'c t -> 'd t -> 'e t -> f:('a -> 'b -> 'c -> 'd -> 'e -> 'f) -> 'f t
val iter3 : 'a t -> 'b t -> 'c t -> f:('a -> 'b -> 'c -> Base.unit) -> Base.unit
val iter4 : 'a t -> 'b t -> 'c t -> 'd t -> f:('a -> 'b -> 'c -> 'd -> Base.unit) -> Base.unit
val iter5 : 'a t -> 'b t -> 'c t -> 'd t -> 'e t -> f:('a -> 'b -> 'c -> 'd -> 'e -> Base.unit) -> Base.unit
val fold : 'a t -> init:'acc -> f:('acc -> 'a -> 'acc) -> 'acc
val fold2 : 'a t -> 'b t -> init:'acc -> f:('acc -> 'a -> 'b -> 'acc) -> 'acc
val scan : 'a t -> init:'acc -> f:('acc -> 'a -> 'acc * 'b) -> 'b t
val scan2 : 'a t -> 'b t -> init:'acc -> f:('acc -> 'a -> 'b -> 'acc * 'c) -> 'c t
val offsets : ?rev:Base.bool -> Base.unit -> Base.int t

Offset of each field within the interface. The first field is placed at the least significant bit, unless the rev argument is true.

val of_interface_list : 'a t Base.list -> 'a Base.list t

Take a list of interfaces and produce a single interface where each field is a list.

val to_interface_list : 'a Base.list t -> 'a t Base.list

Create a list of interfaces from a single interface where each field is a list. Raises if all lists don't have the same length.

module All (M : Base.Monad.S) : sig ... end

Similar to Monad.all for lists -- combine and lift the monads to outside the interface.

val or_error_all : 'a Base.Or_error.t t -> 'a t Base.Or_error.t

Equivalent to All(Or_error).all. This is made a special case for convenience.

module type Comb = sig ... end
module Make_comb (Comb : Hardcaml.Comb.S) : Comb with type comb = Comb.t
module Of_bits : Comb with type comb = Hardcaml.Bits.t
module Of_signal : sig ... end
module Of_always : sig ... end

Helper functions to ease usage of the Always API when working with interfaces.

module Names_and_widths : sig ... end
val create : clear_to:Hardcaml.Signal.t -> clear:Hardcaml.Signal.t -> clock:Hardcaml.Signal.t -> size:Base.int -> port:Hardcaml.Signal.t Ram_port.t -> Hardcaml.Signal.t t
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