iverilog/tgt-vvp
Martin Whitaker 7d12216b14 Backported sorry messages for variable RHS on procedural force/CA. 2015-04-25 13:16:24 +01:00
..
Makefile.in Make use of LDFLAGS when linking *.tgt files 2012-11-03 10:27:59 -07:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
draw_mux.c v0.9: Fix signed/unsigned compare warnings. 2010-09-22 09:14:39 -07:00
draw_net_input.c V0.9: For wire and/or nets we need all the net resolution to be and/or. 2011-11-19 08:48:31 -08:00
draw_switch.c V0.9: Update some warning messages 2011-01-12 16:03:14 -08:00
draw_ufunc.c v0.9: Fix signed/unsigned compare warnings. 2010-09-22 09:14:39 -07:00
draw_vpi.c Allocate a string buffer as needed in the code generator and vvp display code 2012-08-30 19:12:23 -07:00
eval_bool.c Remove malloc.h support and for C++ files use <c...> include files. 2010-06-01 11:27:16 -07:00
eval_expr.c V0.9: Back port the down payment on const-correctness patch from Larry 2011-04-27 11:11:08 -07:00
eval_real.c V0.9: Fix spacing issues 2011-03-08 19:21:56 -08:00
modpath.c v0.9: Fix signed/unsigned compare warnings. 2010-09-22 09:14:39 -07:00
vector.c V0.9: Remove some gcc/g++ (4.6.1) warnings. 2011-10-19 18:16:06 -07:00
vvp-s.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp.c V0.9: Add #! support for MinGW since newer shells support this. 2011-03-15 18:57:36 -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 11:27:16 -07:00
vvp_priv.h V0.9: Add unlimited tail recursion for the real ternary operator. 2010-08-06 21:10:57 -07:00
vvp_process.c Backported sorry messages for variable RHS on procedural force/CA. 2015-04-25 13:16:24 +01:00
vvp_scope.c V0.9: Assert that sync/async set/clear are not supported for a DFF primitive. 2011-11-17 14:42:07 -08:00

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.