This is exactly my opinion. Additional, schematics later printed on paper and should be to understand. Often I've seen a netlabel on one sheet and the wire ends somewhere. In one or more sheets you have to search where it is also connected. So, to understand such a schematic, you need the netlist. But why you draw a schematic then ? It should be possible to add a feature, that erc can check if a port-label has a corresponding sheet entry. At the moment, I check this manually, because I dumped a board for this reason. Georg [EMAIL PROTECTED] > > I don't see how this is so. If for example there is a typo on > the port on a > single sheet, that connectivity still doesn't flow through > whether the ports > are global or not. A good reason to *not* use global ports is > it allows you > to use the same port name in more than one place, and also > allows duplicates > of the same sheet more easily. I also like using a > hierarchical design with > increasing amounts of detail as you delve into the hierarchy. > IMO this makes > a complex design much more readable. > > Global ports/net names is analogous to global variables in > programming. > > Cheers, > MvdW > > > > > > to avoid this we just use nets and ports global and forget about all > > that hierarchical stuff, sheet entries and module ports > > we generally just have sheet symbols on a 'top' sheet which > > is basically > > unused except to gather sheets into a 'project' > > > > it's also a good idea to have all ic's NOT have hidden > pins, then you > > can control the power scope easily > > > > If you must use the sheet entries, etc. I think there is a > way to list > > unconnected pins, that should be easier than combing thru > the netlist, > > although I guess that would not cover groups of pins that are > > connected > > together on their own sheets but not across sheets > > > > that's another argument for 'nets and ports global' > > > > Dennis Saputelli > > > > Drew Lundsten wrote: > > > > > > Apparently it's possible to put a sheet entry called e.g. RST# and > > > regardless of whether the corresponding sheet has a RST# > > port, the nets > > > will be connected. This relates to my earlier post > regarding an ERC > > > check for unmatched ports and sheet entries. > > > > > > Is this sensible? I can't think of any good arguments for > > NOT connecting > > > a sheet entry called RST# to the RST# net on the > > corresponding sheet, > > > whether there's a matching port or not, but I have on > > numerous occasions > > > had problems with an unmatched entry and port causing a broken net > > > that's only caught by a manual combing of the netlist. > > > > > > Drew > > > > -- > > ______________________________________________________________ > > _____________ > > www.integratedcontrolsinc.com Integrated > Controls, Inc. > > tel: 415-647-0480 2851 21st > Street > > fax: 415-647-3003 San > Francisco, CA 94110 > > > > > > > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > > * This message sent by: PROTEL EDA USERS MAILING LIST > > * > > * Use the "reply" command in your email program to > > * respond to this message. > > * > > * To unsubscribe from this mailing list use the form at > > * the Association web site. 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