hw-glue-sequence (libglue.la :: glue_component_library)

Synopsis:

This component family distributes pin signals from a source to a sequence of sinks.

Functionality:

Modelling:

• This component resembles a fan-out net in a circuit, or a very fast shift register.
• The number of outputs is a matter of configuration. For the -1, -2, and -8 family members, the num-outputs is initialized.

Behaviors
configuration	When the num-outputs is written-to, this component adjusts its list of output pins, named output-0, output-1, and so on. New ones may be generated or old ones may disappear.
data forwarding	Each input signal on the input pin is forwarded to all external pins connected to the output-0 pin, then output-1, and so on, in sequence, for all configured outputs.

SID Conventions
functional	supported	This is a functional component.
state save/restore	supported	This component supports state save/restore, though state is minimal (the number of outputs).
triggerpoints	supported	This component supports triggerpoints by watching the input pin and the num-outputs attribute.
Recursion Control	supported	This component limits recursion on the input pin.
presentation	supported	This component presents attributes in the "pin", "setting", and "watchable" categories.

Environment:

Related components

This component may be used as an initialization sequencer in a scenario with ordering dependencies. See this configuration fragment:

	new hw-glue-sequence reset-manager
	new SOME_KIND_OF_CPU cpu
	new SOME_KIND_OF_LOADER loader
	set reset-manager num-outputs 3
	connect-pin reset-manager input <- main running
	connect-pin reset-manager output-0 -> cpu reset
	connect-pin reset-manager output-1 -> loader load!

It could be used as a central point to distribute a many-to-many broadcast signal.

Component Reference:

Component: hw-glue-sequence (Abstract)

pins
name	direction	legalvalues	behaviors
input	in	any	data forwarding
output-NNN	out	any	data forwarding

attributes
name	category	legal values	default value	behaviors
state-snapshot	no category	opaque string	-	state save/restore
num-outputs	setting, watchable	small positive number	0	configuration
input	pin, watchable	-	-	data forwarding

Variant: hw-glue-sequence-1

Same as hw-glue-sequence

Variant: hw-glue-sequence-2

Same as hw-glue-sequence

Variant: hw-glue-sequence-8

Same as hw-glue-sequence