NAME¶
graywolf - placement tool for digital VLSI design
SYNOPSIS¶
graywolf [options] designName [windowId] [flowdirectory]
DESCRIPTION¶
This is a utility used to perform placement of digital VLSI designs. It is based
on some code from the early 90s and it is one of the building blocks of the
open source qflow digital design flow.
OPTIONS¶
- -n
- no graphics
- -d
- prints debug info and performs extensive error checking
- -g
- general mode
- -p
- pick mode
- -w
- parasite mode will inherit a window
USAGE¶
Typically, you would be in a directory with a [DESIGN].cel file and a
[DESIGN].par file and then run:
graywolf [DESIGN]
where [DESIGN] is the file name of the design. More information about the input
and output files is found below.
However, it is recommended to use the qflow digital design flow
instead of running graywolf directly. qflow prepares the input files
from standardized files, and converts the output to standardized files.
Two input files are necessary to run graywolf. A .cel file containing the
design, and a .par file containing the parameters which define the technology.
The .cel file may be created from a .blif design file and a .lef library file
with the script "blif2cel.tcl" in the qflow package.
OUTPUT¶
The main output from graywolf is a .pl1 file containing the layout of the
design. This may be converted to a .def file using the script
"place2def.tcl" in the qflow package. A .def file is a standardized
description of a layout.
AUTHOR¶
This manual page was written by Ruben Undheim <ruben.undheim@gmail.com>
for the Debian project (and may be used by others).
