iverilog/tgt-vvp
Stephen Williams f944d31353 Improved assertion on signal arrays.
Use ivl_expr_file() information to improve a signal assert message.
2008-01-09 14:24:30 -08:00
..
.cvsignore vvp.conf files are generated. 2005-03-18 02:57:23 +00:00
Makefile.in Put modpaths in correct scope. 2007-10-31 21:45:34 -07:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
configure.in Better configuration messages (Alan Feldstein) 2007-05-16 23:59:12 +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 Pad type-punned user functions properly 2007-12-15 22:05:56 -08:00
draw_vpi.c Rework ivl_file_table_* interface and fix most vvp/examples. 2008-01-03 14:13:22 -08:00
eval_bool.c Fix definition missing in include file and missing UINT64_FMT. 2008-01-03 14:14:54 -08:00
eval_expr.c Improved assertion on signal arrays. 2008-01-09 14:24:30 -08:00
eval_real.c Rework ivl_file_table_* interface and fix most vvp/examples. 2008-01-03 14:13:22 -08:00
modpath.c modpath nodes need vpi expression handles 2007-11-05 19:59:27 -08:00
vector.c Fix that save expression lookaside always clears cached variable values. 2007-04-01 05:26:17 +00:00
vvp-s.conf.in Generate VVP_EXECUTABLE flag in conf files. 2003-12-07 19:28:43 +00:00
vvp.c Rework ivl_file_table_* interface and fix most vvp/examples. 2008-01-03 14:13:22 -08:00
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 Pad type-punned user functions properly 2007-12-15 22:05:56 -08:00
vvp_process.c Fix definition missing in include file and missing UINT64_FMT. 2008-01-03 14:14:54 -08:00
vvp_scope.c Add arith/mult.r and arith/sum.r 2008-01-04 15:41:01 -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.