ADDER X-SC Bedienungsanleitung Seite 51

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1.22. PROOF 51
will prepare the design for the ring pad placement. In this case we use the following command.
% ocp -ring mux_ool muxoolpring
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Placer for Standards Cells
Alliance CAD System 5.0 20040928, ocp 5.0
Copyright (c) 2001-2005, ASIM/LIP6/UPMC
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Ocp : placement finished
This will give us the placement shown in Figure 1.19. We can also force a vertical placement of the design
Figure 1.19: Pad oriented placement of the multiplexer circuit using OCP.
indicating the number of rows we want to use, but we must carefully choose the number of rows to avoid the
use of an excesive number of tie cells (blank cells).
1.22 Proof
Proof is an Alliance tool intended to compare an extracted behavioral description from a layout to the corre-
sponding behavioral description of the design. To extract a behavioral description from a layout we need one tool
called yagle that is no longer available in Alliance. It is now available from Avertec (http://www.avertec.com/).
They provide the binaries of this tool for non-commercial and/or university research. Proof is used with the
following command.
% proof [-a] [-d] file1 file2
The options available in Proof are shown in Table 1.22. As an example of the use of Proof we will compare the
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