iverilog/tgt-vvp
Stephen Williams 2dcb1514a2 Add support for passing array words to system tasks.
Array words don't have a vpiHandle with a label, so the %vpi_call
needs a special syntac for arguments that reference array words.
This syntax creates an array word reference that persists and can
be used at a VPI object by system tasks.
2008-05-20 16:21:54 -07:00
..
.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 Use inttypes.h to get uint64_t print format string 2008-01-14 09:53:20 -08:00
draw_mux.c Fix array inputs to mux devices. 2008-05-19 17:37:23 -07:00
draw_ufunc.c Detect thread bit allocation failures 2008-04-15 21:51:03 -07:00
draw_vpi.c Add support for passing array words to system tasks. 2008-05-20 16:21:54 -07:00
eval_bool.c Use inttypes.h to get uint64_t print format string 2008-01-14 09:53:20 -08:00
eval_expr.c Careful that select signal does not try to select reg words directly. 2008-05-19 11:44:03 -07:00
eval_real.c Handle corner cases of abs(), min() and max() 2008-05-06 22:19:59 -07:00
modpath.c Add ifnone functionality. 2008-04-29 11:55:32 -07:00
vector.c Detect thread bit allocation failures 2008-04-15 21:51:03 -07:00
vvp-s.conf.in Generate VVP_EXECUTABLE flag in conf files. 2003-12-07 19:28:43 +00:00
vvp.c Detect thread bit allocation failures 2008-04-15 21:51:03 -07:00
vvp.conf.in Generate VVP_EXECUTABLE flag in conf files. 2003-12-07 19:28:43 +00:00
vvp_config.h.in Use inttypes.h to get uint64_t print format string 2008-01-14 09:53:20 -08:00
vvp_priv.h Detect thread bit allocation failures 2008-04-15 21:51:03 -07:00
vvp_process.c Fix non-blocking assign to part select of memory word. 2008-05-20 11:51:17 -07:00
vvp_scope.c Fix array inputs to mux devices. 2008-05-19 17:37:23 -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.