iverilog/tgt-vvp
Maciej Suminski 756c9ceccf ivl: Functions returning a dynamic array may be casted to vector. 2015-02-04 16:02:38 +01:00
..
Makefile.in vvp code generator try to generate condition flags directly. 2014-11-19 18:32:19 -08:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
cppcheck.sup Remove some cppcheck warnings 2014-06-28 16:56:09 -07:00
draw_class.c Allow class properties to be arrayed. 2014-09-15 17:37:30 -07:00
draw_enum.c updated FSF-address 2012-08-29 10:12:10 -07:00
draw_mux.c Improbe vvp support for wide mux devices. 2014-07-14 16:46:58 -07:00
draw_net_input.c Handle some tricky conditions assignments to parts. 2014-07-14 16:46:58 -07:00
draw_substitute.c Handle some tricky conditions assignments to parts. 2014-07-14 16:46:58 -07:00
draw_switch.c updated FSF-address 2012-08-29 10:12:10 -07:00
draw_ufunc.c Report that 4-state dynamic arrays are not currently supported in vvp 2015-01-16 18:22:16 -08:00
draw_vpi.c Remove dead stuff_ok_flags from draw_eval_vec4 functions. 2014-10-24 09:32:32 -07:00
eval_bool.c Remove dead stuff_ok_flags from draw_eval_vec4 functions. 2014-10-24 09:32:32 -07:00
eval_condit.c Implement %cmp/ne and %cmpi/ne 2014-12-03 11:06:11 -08:00
eval_expr.c Fix for br962 - pop from dynamic array is not padded to correct width. 2014-11-02 15:26:15 +00:00
eval_object.c ivl: Casting vectors to dynamic arrays. 2015-02-04 16:02:38 +01:00
eval_real.c Remove dead stuff_ok_flags from draw_eval_vec4 functions. 2014-10-24 09:32:32 -07:00
eval_string.c Port %pushv/str to vec4-stack style. 2014-10-24 10:16:35 -07:00
eval_vec4.c Only skip zero repeat expressions in a concatenation. 2015-02-02 18:15:12 -08:00
modpath.c updated FSF-address 2012-08-29 10:12:10 -07:00
stmt_assign.c ivl: Functions returning a dynamic array may be casted to vector. 2015-02-04 16:02:38 +01:00
vector.c Remove dead code for allocate_vec handling. 2014-10-24 13:07:53 -07:00
vvp-s.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp.c Pass -v compiler option to vvp in the output file shebang line. 2014-12-16 21:22:19 +00:00
vvp.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp_config.h.in Update header files to use a more standard name to prevent rereading 2014-07-23 13:42:56 -07:00
vvp_priv.h Expression cast handles size if need be. 2014-12-02 16:54:32 -08:00
vvp_process.c Fix some cppcheck warnings in tgt-vvp 2014-12-10 16:30:55 -08:00
vvp_scope.c Report that 4-state dynamic arrays are not currently supported in vvp 2015-01-16 18:22:16 -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.