This patch adds preliminary support for finding the correct name for
a nexus at a given scope level. It also does the following.
Report that real modulus is not supported.
Fix a bug in the generation of concat expressions.
Add missing generation of unary ! operator.
Add ability to generate > integer delays.
Refactor some of the support code.
Make some of the error messages more descriptive.
Ignore the ALLOC and FREE statements (only used with automatic tasks).
This patch adds significantly more functionality to the vlog95 back end.
The following are the major additions:
Display unsigned numbers without undefined bits in hex.
Add support for both L-Value and R-value bit and part selects.
Added support for out of scope references.
Added support for emitting logic gates (range not finished, name is invalid).
Added support for emitting initial/always blocks.
Add support for event inter statement delays.
Convert a blocking inter statement delay assign back to the original form.
Added support for rescaling variable delays.
Added support for the disable statement.
Added support for an event trigger statement (event name is missing).
Added support for calling a user task (calling arguments are missing).
Added support for an event based delay statement (@) (event name is missing)
Not all of these are working as expected since there is not currently a
routine to find a nexus name as a function of scope (needed for event names,
logic gate ports, etc.). Since the Icarus compiler generates structural code
the arguments to modules, module instantiations and calling user tasks are
also still missing.
This patch adds support for using a scope in an expression and calling
a user function. It also fixes an issue in the module name mangling
and calling a system task/function with multiple arguments.
This patch adds support for the various case statements and adds
preliminary support for instantiating modules. The module instantiation,
just like the module definition, is still missing ports. Adding this
will require modification to the compiler to get the port order correct.
Because of defparams and passed parameters any module that has a
parameter must be generated uniquely for each instance since they may not
all be the same. Modules without parameters are only generated once.
This patch adds the ability to print a delay expression (it is rescaled
to the module timescale) and adds support the following statement types:
nonblocking assignment with a delay (event control is still missing)
condition (if/else)
forever
repeat
while (Icarus translated for loops to while loops)
fork
procedural continuous assign
deassign
force
release
This patch adds support to the vlog95 convert for the ternary operator,
the concat/repeat operator and calling a system function. It also adds
the `celldefine information when appropriate.
This patch adds more support to the Verilog 1995 converter. There is
still a lot that is missing and there is still some implemented
functionality that is not 100%.
Cary R