iverilog/tgt-vvp
steve 1f54f128c1 Handle unary minus of real valued expressions. 2007-02-20 05:58:36 +00:00
..
.cvsignore vvp.conf files are generated. 2005-03-18 02:57:23 +00:00
Makefile.in Administrative/Makefile fixes, mostly for windows. (Cary R.) 2007-02-06 05:07:31 +00:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
configure.in Include stdint.h if it is present. 2005-12-07 03:43:30 +00:00
draw_mux.c Major rework of array handling. Memories are replaced with the 2007-01-16 05:44:14 +00:00
draw_ufunc.c Major rework of array handling. Memories are replaced with the 2007-01-16 05:44:14 +00:00
draw_vpi.c Treat BOOL and LOGIC the same according to VPI functions. 2007-02-14 05:59:24 +00:00
eval_bool.c Include stdint.h if it is present. 2005-12-07 03:43:30 +00:00
eval_expr.c Get padding right when loading array word into big vector. 2007-02-12 04:37:58 +00:00
eval_real.c Handle unary minus of real valued expressions. 2007-02-20 05:58:36 +00:00
vector.c Expression lookaside cannot hold complex expressions 2007-02-06 04:43:53 +00:00
vvp-s.conf.in Generate VVP_EXECUTABLE flag in conf files. 2003-12-07 19:28:43 +00:00
vvp.c Clean up spurious trailing white space. 2004-10-04 01:10:51 +00:00
vvp.conf.in Generate VVP_EXECUTABLE flag in conf files. 2003-12-07 19:28:43 +00:00
vvp_config.h.in Include stdint.h if it is present. 2005-12-07 03:43:30 +00:00
vvp_priv.h Remove dead code related to memories. 2007-01-17 04:39:18 +00:00
vvp_process.c Lookaside is invalid when working a new scope. 2007-02-02 04:48:49 +00:00
vvp_scope.c Remove dead code related to memories. 2007-01-17 04:39:18 +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.