iverilog/tgt-vvp
Cary R f7d3c7c711 Add non-blocking EC for arrays and other fixes.
This patch adds non-blocking event control for array words.
It also fixes a problem where the word used to put the
calculated delay for a non-blocking array assignment was
not being released. It also fixes the non-blocking array
assignments to correctly handle off the end/beginning part
selects.
2008-09-19 21:08:03 -07:00
..
.cvsignore vvp.conf files are generated. 2005-03-18 02:57:23 +00:00
Makefile.in The -V flag gets version information from all parts. 2008-09-07 21:54:46 -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 Allow variable delay in continuous assignments. 2008-09-13 15:01:23 -07:00
draw_net_input.c Allow variable delay in continuous assignments. 2008-09-13 15:01:23 -07:00
draw_switch.c Replace the NetPartSelect:BI with NetTran(VP). 2008-06-03 11:16:25 -07:00
draw_ufunc.c Use ivl_signal_dimensions to find arrays not ivl_signal_array_count 2008-07-30 14:25:29 -07:00
draw_vpi.c Make &A and &PV nestable. 2008-08-27 21:09:41 -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 When evaluating a constant into an index make sure to clear bit 4. 2008-09-18 21:52:00 -07:00
eval_real.c Fix conversion of negative integer to real. 2008-09-19 17:04:40 -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 Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp.c The -V flag gets version information from all parts. 2008-09-07 21:54:46 -07:00
vvp.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
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 Allow that sum immediate values can be signed. 2008-06-13 13:32:06 -07:00
vvp_process.c Add non-blocking EC for arrays and other fixes. 2008-09-19 21:08:03 -07:00
vvp_scope.c Generate delay devices for sign-extend devices. 2008-09-06 18:05:18 -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.