SV adds a number of data types however according to IEEE1800-2005 they can
be dumped by pretending to be existing VCD datatypes.
SystemVerilog Verilog Size
============= ======= ====
bit reg [total size of packed dimension]
logic reg [total size of packed dimension]
int integer 32
shortint reg 16
longint reg 64
byte reg 8
enum integer 32
shortreal real --
...noncompliant dumpers may surface in the future; the above is meant to
be an alias guide for future incompatibility fixes.
-07apr07ajb