iverilog/tgt-vvp
Stephen Williams 73e2b297df Replace the NetPartSelect:BI with NetTran(VP).
Fold the bi-directional part select into the pass switch (tran) support
so that it can be really bi-directional. This involves adding a new
tranvp device that does part select in tran islands, and reworking the
tran island resolution to handle non-identical nodes. This will be needed
for resistive tran devices anyhow.
2008-06-03 11:16:25 -07:00
..
.cvsignore vvp.conf files are generated. 2005-03-18 02:57:23 +00:00
Makefile.in Add support for tranif devices in the vvp code generator. 2008-06-01 21:08:31 -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_net_input.c Replace the NetPartSelect:BI with NetTran(VP). 2008-06-03 11:16:25 -07:00
draw_switch.c Replace the NetPartSelect:BI with NetTran(VP). 2008-06-03 11:16:25 -07:00
draw_ufunc.c Detect thread bit allocation failures 2008-04-15 21:51:03 -07:00
draw_vpi.c Add smart part select for system functions &PV<>. 2008-05-29 09:40:12 -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 Check range of immediate value. 2008-05-29 14:00:32 -07:00
eval_real.c Handle corner cases of abs(), min() and max() 2008-05-06 22:19:59 -07:00
modpath.c MinGW fixes (development) 2008-05-22 20:24:21 -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 Add support for tranif devices in the vvp code generator. 2008-06-01 21:08:31 -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 Replace the NetPartSelect:BI with NetTran(VP). 2008-06-03 11:16:25 -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.