iverilog/tgt-vvp
Stephen Williams c4c7a619ea Merge branch 'vhdl' 2010-10-01 15:13:29 -07:00
..
Makefile.in Update all Makefile.in files to support OpenSolaris 2010-05-13 18:54:09 -07:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
draw_mux.c Fix signed/unsigned compare warnings. 2010-09-22 09:09:26 -07:00
draw_net_input.c Fix possible undefined value compiler warning 2010-09-22 13:41:24 -07:00
draw_switch.c Draw code for a delayed enable to tranif gates. 2010-07-19 21:14:29 -07:00
draw_ufunc.c Fix signed/unsigned compare warnings. 2010-09-22 09:09:26 -07:00
draw_vpi.c Fix signed/unsigned compare warnings. 2010-09-22 09:09:26 -07:00
eval_bool.c Remove malloc.h support and for C++ files use <c...> include files. 2010-06-01 08:56:30 -07:00
eval_expr.c Merge branch 'vhdl' 2010-10-01 15:13:29 -07:00
eval_real.c Merge branch 'vhdl' 2010-10-01 15:13:29 -07:00
modpath.c Fix signed/unsigned compare warnings. 2010-09-22 09:09:26 -07:00
vector.c Fix shadow warnings found on OpenBSD. 2010-05-28 07:03:02 -07:00
vvp-s.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp.c Add support for passing the delay selection to vvp. 2010-03-16 15:43:06 -07:00
vvp.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp_config.h.in Remove malloc.h support and for C++ files use <c...> include files. 2010-06-01 08:56:30 -07:00
vvp_priv.h Add unlimited tail recursion for the real ternary operator. 2010-07-11 17:24:37 -07:00
vvp_process.c Down payment on const-correctness 2010-09-29 17:15:40 -07:00
vvp_scope.c Fix signed/unsigned compare warnings. 2010-09-22 09:09:26 -07:00

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.