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162 | ###############################################################################
# Copyright (c) 2011-2024 by Altair Engineering, Inc.
# All rights reserved.
#
# Altair Engineering, Inc. makes this software available as part of the Vision
# tool platform. As long as you are a licensee of the Vision tool platform
# you may make copies of the software and modify it to be used within the
# Vision tool platform, but you must include all of this notice on any copy.
# Redistribution without written permission to any third party, with or
# without modification, is not permitted.
# Altair Engineering, Inc. does not warrant that this software is error free
# or fit for any purpose. Altair Engineering, Inc. disclaims any liability for
# all claims, expenses, losses, damages and costs any user may incur as a
# result of using, copying or modifying the software.
# =============================================================================
# @userware
# Beautify Schematics
# @section
# Modify the Loaded Database
# @description
# Call post process operators to beautify the schematic.
# @files
# operpp.tcl
# @example
# demo/rtl/aquarius/aquarius.f
# @cmdline
# -compact off
# -F @example[0]
# -userware @files[0]
# @tag
# gui zdb rtl
###############################################################################
# -----------------------------------------------------------------------------
# _operPP - Call post process operators to beautify the schematic.
# -----------------------------------------------------------------------------
#
proc _operPP {db} {
##
# Return if the database is empty.
#
if {$db == {}} {
return
}
##
# Show the net attribute 'value' at all connected pins.
#
$db attr -db set "@nlv:net=%value"
##
# Enable the progress bar.
#
zprogress begin
##
# Call 'oper removeBuf' to remove all buffers in all modules.
#
zprogress push "removeBuf" 0.2
$db oper removeBuf -all
zprogress pop
##
# Call 'oper removeInv' to remove all inverters connected to
# power or ground nets in all modules.
#
zprogress push "removeInv" 0.35
$db oper removeInv -all
zprogress pop
##
# Call 'oper chain' to find chains of MUX/WIDE_MUX and AND/OR primitives.
#
zprogress push "chain" 0.55
$db oper chain -all -bool -mux
zprogress pop
##
# Call 'oper guessWide' to find scalar primitives with the output net
# connected to the same pinBus.
#
zprogress push "guessWide" 0.7
$db oper guessWide -all -equal -mux -prio -dlatch -repeat
zprogress pop
##
# Call 'oper reducePins' to replace instances with multiple pins connected
# to same nets, by a additional hierarchy with a smaller interface.
#
zprogress push "reducePins" 0.85
$db oper reducePins -all -created
zprogress pop
##
# Call 'oper createConst' to replace all power ground nets connected to
# input pins with a 'constant' net stub and annotate a 'value' attribute
# with the constant value.
# The option '-bool' looks for AND/OR primitives with constant 0/1 at one
# input pin.
#
zprogress push "createConst" 0.95
$db oper createConst -all -bool
zprogress pop
##
# Call 'oper removeDangle' remove nets connecting to nothing
# and buses with no subnets.
#
zprogress push "removeDangle" 0.98
$db oper removeDangle -all
zprogress pop
##
# Call 'oper removeUnused' remove unused primitive cells.
#
zprogress push "removeUnused" 0.99
$db oper removeUnused
zprogress pop
##
# Delete all objects flagged as zombie.
#
zprogress push "deleteZombies" 1.0
$db deleteZombies
zprogress pop
##
# Finish the progress bar.
#
zprogress end
##
# Validate the database.
#
if {[catch {$db validate} msg]} {
zmessage print ERR $msg
}
##
# Inform the GUI that the database was modified.
#
gui database removeChangedCallback _operPP
gui database changed $db
gui database registerChangedCallback [list _operPP]
}
##
# Show net attributes at pins (shownetattr=4).
#
gui settings set "nlv:shownetattr" 4
gui settings changed
##
# Use gui database runOrRegisterChangedCallback to immediately run
# _operPP
# if we have a database, or otherwise register the proc to be executed after
# the database is available.
#
gui database runOrRegisterChangedCallback _operPP
|