iverilog

History

steve aa390f2a91 Fix l-value indexing of memories and vectors so that an unknown (x) index causes so cell to be addresses. Fix tangling of label identifiers in the fork-join code generator.		2002-08-27 05:39:57 +00:00
..
.cvsignore	Add the tgt-vvp code generator target.	2001-03-19 01:20:46 +00:00
Makefile.in	Autoconfig ident support.	2002-08-12 00:27:10 +00:00
README.txt	tgt-vvp generates code that skips nets as inputs.	2001-08-10 00:40:45 +00:00
configure.in	Autoconfig ident support.	2002-08-12 00:27:10 +00:00
draw_mux.c	conditional ident string using autoconfig.	2002-08-12 01:34:58 +00:00
eval_expr.c	Fix l-value indexing of memories and vectors so that	2002-08-27 05:39:57 +00:00
vvp.c	conditional ident string using autoconfig.	2002-08-12 01:34:58 +00:00
vvp_priv.h	Fix l-value indexing of memories and vectors so that	2002-08-27 05:39:57 +00:00
vvp_process.c	Fix l-value indexing of memories and vectors so that	2002-08-27 05:39:57 +00:00
vvp_scope.c	conditional ident string using autoconfig.	2002-08-12 01:34:58 +00:00

README.txt

THE VVP TARGET

SYMBOL NAME CONVENTIONS

There are some naming conventions that the vp target uses for
generating symbol names.

* wires and regs

Nets and variables are named V_<full-name> where <full-name> is the
full hierarchical name of the signal.

* Logic devices

Logic devices (and, or, buf, bufz, etc.) are named L_<full_name>. In
this case the symbol is attached to a functor that is the output of
the logic device.


GENERAL FUNCTOR WEB STRUCTURE

The net of gates, signals and resolvers is formed from the input
design. The basic structure is wrapped around the nexus, which is
represented by the ivl_nexus_t.

Each nexus represents a resolved value. The input of the nexus is fed
by a single driver. If the nexus in the design has multiple drivers,
the drivers are first fed into a resolver (or a tree of resolvers) to
form a single output that is the nexus.

The nexus, then, feeds its output to the inputs of other gates, or to
the .net objects in the design.