Using Design Entry HDL designs in Allegro System Capture
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Devices that control the XNets Creation
There are two project (cpm) file directives that can be used for defining the mode
in which DE-HDL and System Capture needs to operate. These directives can also
be set in the site.cpm file.
• AUTO_XNETS_USING_DML
o The directive defines if the mode of operation is DML-dependent or
DML-independent
o Value of ON means, it's DML-dependent
o Value of OFF means, it's DML-independent
o This directive is read by DE-HDL only. System Capture always
operates in DML-independent mode and hence it ignores it.
• AUTO_XNETS_USING_GATES
o The directive defines the XNet creation mode – Automatic or
Manual
o Value of ON means, it's Automatic XNet creation mode
o Value of OFF means, it's Manual XNet creation mode
o This directive is read by both DE-HDL as well as System Capture.
DE-HDL looks for these directives in the START_CONSTRAINT_MGR section.
System Capture reads the directives from the START_CANVAS section.
