iverilog/tgt-vvp
steve 8188e8f3bf Use %p name for all LPM functors. 2003-03-13 06:07:11 +00:00
..
.cvsignore Add the tgt-vvp code generator target. 2001-03-19 01:20:46 +00:00
Makefile.in Merge vpi_call and vpi_func draw functions. 2003-02-28 20:21:13 +00:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
configure.in Autoconfig ident support. 2002-08-12 00:27:10 +00:00
draw_mux.c Eliminate use of ivl_lpm_name function. 2003-02-25 03:40:45 +00:00
draw_vpi.c Keep parameter constants for the ivl_target API. 2003-03-10 23:40:53 +00:00
eval_expr.c Merge vpi_call and vpi_func draw functions. 2003-02-28 20:21:13 +00:00
eval_real.c Excess precision breaks some targets. 2003-03-08 01:04:01 +00:00
vector.c Add thread expression lookaside map. 2002-09-27 16:33:34 +00:00
vvp.c conditional ident string using autoconfig. 2002-08-12 01:34:58 +00:00
vvp_priv.h Merge vpi_call and vpi_func draw functions. 2003-02-28 20:21:13 +00:00
vvp_process.c Use number for event labels. 2003-03-06 01:17:46 +00:00
vvp_scope.c Use %p name for all LPM functors. 2003-03-13 06:07:11 +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.