iverilog/tgt-vvp
Stephen Williams 5506969882 Little note that IVL_VT_STRING is not support yet. 2010-11-05 18:49:02 -07:00
..
Makefile.in Add cppcheck target to the Makefile 2010-10-14 19:11:32 -07:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
draw_mux.c Revert bad merge from vhdl branch 2010-10-02 11:02:27 -07:00
draw_net_input.c Merge branch 'work1' 2010-10-21 19:31:49 -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 Tasks functions with atom2 arguments. 2010-10-10 10:06:27 -07:00
draw_vpi.c Little note that IVL_VT_STRING is not support yet. 2010-11-05 18:49:02 -07:00
eval_bool.c Handle signed IVL_VT_BOOL load into integer. 2010-10-21 17:04:56 -07:00
eval_expr.c Merge branch 'work1' 2010-10-21 19:31:49 -07:00
eval_real.c Revert bad merge from vhdl branch 2010-10-02 11:02:27 -07:00
modpath.c Add error checking definitions for malloc(), realloc() and calloc() 2010-10-14 17:39:23 -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 Merge branch 'work1' 2010-10-21 19:31:49 -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.