iverilog/tgt-vvp
Cary R 971576589e Fix some MinGW compile warnings.
This patch fixes some compile warnings found using the latest
MinGW compiler.
2010-02-02 21:00:56 -08:00
..
Makefile.in Add explicit dependencies on generated header files. 2009-12-04 15:20:03 -08:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
draw_mux.c Fix delays in continuous assignment to support 64bit delays. 2009-12-01 10:21:57 -08:00
draw_net_input.c Add appropriate hysteresis to tranif input pins. 2009-10-28 16:32:40 -07:00
draw_switch.c Content-free portability fixes. 2008-09-29 18:06:47 -07:00
draw_ufunc.c Function arg. expressions need to use the expr. width and arg. width. 2009-12-25 11:33:12 -05:00
draw_vpi.c Fix some MinGW compile warnings. 2010-02-02 21:00:56 -08:00
eval_bool.c Add support for 64 bit delays in procedural non-blocking assignments. 2009-02-17 10:32:11 -08:00
eval_expr.c A signal select is signed if the select not the signal is signed. 2010-01-09 11:43:43 -08:00
eval_real.c Add warning about casting large integer values to reals. 2009-12-25 17:53:08 -05:00
modpath.c Content-free portability fixes. 2008-09-29 18:06:47 -07:00
vector.c Remove most of the lingering CVS droppings. 2008-12-05 21:48:28 -08:00
vvp-s.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp.c Unify the version stamp in the version_*.h header files. 2009-11-27 12:37:11 -08:00
vvp.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp_config.h.in Remove most of the lingering CVS droppings. 2008-12-05 21:48:28 -08:00
vvp_priv.h Some compiler cleanup and minor memory leak fixes. 2009-06-23 09:14:03 -07:00
vvp_process.c Optimize a full L-value indexed part select, etc. 2009-09-24 13:32:57 -07:00
vvp_scope.c Fix some MinGW compile warnings. 2010-02-02 21:00:56 -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.