Brad... Thats interesting about the >14 length footprint names. I have started using IPC names for my footprints, and some of them can be quite long. Haven't noticed anything untoward so far though. Oh well... fingers crossed!!
Cheers, Gareth de Mar. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Brad Velander Sent: Thursday, 2 June 2005 10:06 AM To: Protel EDA Discussion List Subject: RE: [PEDA] PCB library size in 99SE? HUGE! Leo, Good that you found your problem. I can comment on one of your found limitations though. Technically maybe the name of a footprint or symbol is limited to 65535 elements. However, if you exceed approx. 14 characters on a footprint name there are some functions in P99SE that will bite you down the road. I can't remember the precise details but when I first started using P99SE I found that some footprints would not update (can't recall how I was trying to update them, synch'ing or update from library) if the footprint name exceeds 14 characters. Sincerely, Brad Velander Senior PCB Designer Northern Airborne Technology 1925 Kirschner Rd., Kelowna, BC, V1Y 4N7. tel (250) 763-2329 ext. 225 fax (250) 762-3374 -----Original Message----- From: Leo Potjewijd [mailto:[EMAIL PROTECTED] Sent: June 1, 2005 3:15 PM To: Protel EDA Discussion List Cc: Protel EDA Discussion List Subject: RE: [PEDA] PCB library size in 99SE? HUGE! At 01/06/05 19:20, Brad Velander wrote: >Leo, > my libraries are typically much larger (10 - 40MB) than the size > mentioned in your reported size. I have never seen a problem. > I don't think that the reported size is correct. Do you have the > libraries stored in a DDB file? Have you compressed that DDB library file > recently? DDB files can get quite large when they are not compressed > regularly. Well folks, it took quite a bit of bit-digging but I finally found the cause for Protels' sudden interest in it's navel (didn't know it even had one, until yesterday afternoon :): for reasons as yet unknown the offending library was corrupted, big time. It started out fine but after twelve or so components the information was complete rubbish. Luckily I have the same setup with a 10-generation auto-backup every 10 minutes on three PC's, so I only needed to add one component to be back in business. Brad: as a result of many earlier system crashes (on totally different PCs) I use the Windows file system for storage exclusively. Pro: no compression needed (ever) and all files are visible/manipulatable outside Protel. Con: directories look a bit cluttered. Note: our software developers had also noticed several qugs (quirky, bug-like events) in MS Access.. For those interested, while digging I found the really, really hard limits concerning PCB libraries: 1) a library can be a maximum of 4,294,967,295 (2^32-1) bytes long 2) component names have a maximum length of 255 characters 3) a component can be comprised of 65535 elements maximum 4) each element is stored as an ASCII 'record' of maximum 65535 characters long Point 4 surprised me, too. After all, it is supposed to be a binary....... Point 1 (and 4) effectively limits the maximum number of components because the file is sequential and internally uses 32-bit unsigned numbers for navigation. However, for all practical uses this is equal to no limit at all. I now suspect the PC's hardware to produce intermittent memory and/or harddisk faults; they seem temperature related (most other crashes and failures occurred in the summer). Various memory test programs revealed nothing so far. Maybe I need a brand new one..... More backups and checks then, I hate to lose another day on this sort of crap.... Thanks, ____________________________________________________________ You are subscribed to the PEDA discussion forum To Post messages: mailto:[email protected] Unsubscribe and Other Options: http://techservinc.com/mailman/listinfo/peda_techservinc.com Browse or Search Old Archives (2001-2004): http://www.mail-archive.com/[email protected] Browse or Search Current Archives (2004-Current): http://www.mail-archive.com/[email protected] ____________________________________________________________ You are subscribed to the PEDA discussion forum To Post messages: mailto:[email protected] Unsubscribe and Other Options: http://techservinc.com/mailman/listinfo/peda_techservinc.com Browse or Search Old Archives (2001-2004): http://www.mail-archive.com/[email protected] Browse or Search Current Archives (2004-Current): http://www.mail-archive.com/[email protected]
