i don't think 99SE ERC will catch this i did look into it at that time, i will look again later
Dennis Saputelli Abd ul-Rahman Lomax wrote: > > At 09:42 PM 12/19/2003, Dennis Saputelli wrote: > >i once had a power port symbol "+12V2" connected to one end of > >a resistor > > > >the rest of the board was all "+12V" for that power and i didn't > >notice it > >good 'ol cut and paste - it wasn't my fault! :) > > > >anyway the resistor didn't go anywhere on one end > >and in the usual mad proto rush it was shipped because the > >DRC was happy > > DRC would be happy, but a properly configured ERC would not. I always have > ERC report unconnected pins, and I nail them all down: if there is a > deliberately unconnected pin, I place a No-ERC directive on it, which from > then on suppresses the ERC report. > > >does DXP catch this ? > > Since 99SE would, I assume DXP also would. > > >BTW, this is not a 'single pin net' since the netlist shows 2 > >items: > >+12V2 > >R112-2 > > > >the 'isolated' power port counts kind of like a 'pin' > > No, I don't think so, unless ERC is misconfigured. Normally, writing here, > I'd check this, but time is short today. But even if ERC will detect such > single pin nets, there is still a problem; what if there had been, say, a > capacitor also connected to +12V2? DXP is not, I am sure, going to catch > this. But there are procedures that could use 99SE/DXP tools to make it > easy to find such problems. But you still have to remember to look for them. > > >i poked around a bit in 99SE and couldn't find a way to flag it > > > >yes manually inspecting the netlist would have caught it and > >truthfully isn't very hard to scan through even a big net list > >for this sort of thing > > I used to always run an NC pin list from PCB, it was part of the Tango DRC > options. A resistor appearing in that list would be a big red flag. It can > be a very good idea to look at a list of nets (not a full net list but a > list of net names) to see if there are any oddities, like > > DATA1 > DATAl > > (Yes, those are different! If they weren't, they wouldn't show up as two > entries in the list, would they? A really sophisticated ERC/DRC would > generate a warning if there were such similar net names) > > >and for the record ... > >at one time i may have been in the DXP-basher camp (some time ago) > > > >at this point since i have not used DXP much i don't think it would > >be objective or fair for me to bash > >i hope i have not lately presented such an attitude > > > >i would prefer to be categorized as simply a non-DXP user who is > >very reluctant to 'move on' based on what i saw during a few > >brief forays > > > >when 2004 ships i intend to give it another go > > Since I'm exploring DXP now, I'm thinking of writing a 99SE -> DXP training > document, that focuses on informing an experienced 99SE user how to move to > DXP.... -- _______________________________________________________________________ Integrated Controls, Inc. Tel: 415-647-0480 EXT 107 2851 21st Street Fax: 415-647-3003 San Francisco, CA 94110 www.integratedcontrolsinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
