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AR# 4063

F1.4 Schematic: "Create schematic from netlist" loses INV from symbols in XNF file

Description

Keywords: Foundation, Schematic, XNF, INV, Create netlist from schematic

Urgency: Standard

General Description:
When "Create schematic from netlist" is used to create a schematic from an XNF
netlist, the Foundation schematic that is created does not include the INV pin
property from symbols in XNF file.

Example: The AND symbol below should be converted to an AND2B2 or an AND2 with
two inverters on the inputs. Instead it is converted to an AND2 with no invertions.

SYM, AND_invs, AND, LIBVER=2.0.0
PIN, I0, I, input1,,INV
PIN, I1, I, input2,,INV
PIN, O, O, out1
END

Solution

The only current workaround is to replace INV pin properties in
the XNF file with inverter symbols.

Example:
Original:
SYM, AND_invs, AND, LIBVER=2.0.0
PIN, I0, I, inv1_out
PIN, I1, I, inv2_out
PIN, O, O, out1
END

Converted:

SYM, AND_invs, AND, LIBVER=2.0.0
PIN, I0, I, input1,,INV
PIN, I1, I, input2,,INV
PIN, O, O, out1
END

SYM, inv1, INV, LIBVER=2.0.0
PIN, I, I, input1
PIN, O, O, inv1_out
END

SYM, inv2, INV, LIBVER=2.0.0
PIN, I, I, input1
PIN, O, O, inv2_out
END
AR# 4063
Date Created 06/12/1998
Last Updated 04/04/2000
Status Archive
Type General Article