iverilog/tgt-vvp
steve 5e627c9adc Compile cleanup of C code. 2004-09-10 23:13:05 +00:00
..
.cvsignore Isolate configure from containing config.h 2004-01-20 21:00:47 +00:00
Makefile.in Makefile cleanup. 2004-02-10 19:25:00 +00:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
configure.in Cleanup configure detection of win32. 2004-02-15 03:17:36 +00:00
draw_mux.c Fix various unsigned compare warnings. 2003-12-19 01:27:10 +00:00
draw_vpi.c Fix word register leak. 2003-04-23 02:22:47 +00:00
eval_expr.c Relaxed width constraint on pad_expression output. 2004-09-10 00:14:31 +00:00
eval_real.c Fix various unsigned compare warnings. 2003-12-19 01:27:10 +00:00
vector.c Wider thread vector limit. 2003-07-03 17:44:10 +00:00
vvp-s.conf.in Generate VVP_EXECUTABLE flag in conf files. 2003-12-07 19:28:43 +00:00
vvp.c Use fopen64 to open output file. 2003-05-16 03:22:52 +00:00
vvp.conf.in Generate VVP_EXECUTABLE flag in conf files. 2003-12-07 19:28:43 +00:00
vvp_config.h.in Isolate configure from containing config.h 2004-01-20 21:00:47 +00:00
vvp_priv.h Isolate configure from containing config.h 2004-01-20 21:00:47 +00:00
vvp_process.c Generate code for nb assign to reals. 2004-05-19 03:25:42 +00:00
vvp_scope.c Compile cleanup of C code. 2004-09-10 23:13:05 +00:00

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.