home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.electronics
- Path: sparky!uunet!wupost!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!ira.uka.de!chx400!bernina!igc.ethz.ch!rudi
- From: rudi@igc.ethz.ch (Rudi V. Drunen Groningen)
- Subject: Re: Questions about GAL .JED download file
- Message-ID: <1992Jul22.125437.5876@bernina.ethz.ch>
- Sender: news@bernina.ethz.ch (USENET News System)
- Organization: Computational Chemistry, ETH, Zuerich
- References: <92203.170353LEEK@QUCDN.QueensU.CA>
- Date: Wed, 22 Jul 1992 12:54:37 GMT
- Lines: 29
-
- In article <92203.170353LEEK@QUCDN.QueensU.CA>, LEEK@QUCDN.QueensU.CA writes:
- > I am in the process of building a GAL programmer from programming
- > specs I got from National Semiconductor.
- >
- > (Unfortunately that's under non-disclosure, so I can't give the specs out.
- > Just in case someone asks. It is a shame that the GAL manufacturers don't
- > make their programming specs available to the public.)
- >
-
- That's the very same thought as I have on GAL manufacturers, WHY don't they
- give out their programming specs ?. It's common practice that the EPROM
- manufacturers add their programming specs to the data sheet.
- I REALLY DO NOT UNDERSTAND why those chip-mfgrs make these specs a secret.
- I think anyone should be able to get those specs for building his / her
- programmer. You pay for the part, so you should be able to get all the data
- on it as well (that's where you pay for !).
-
- There are a number of 2nd sources of gals, so LATTICE doesn't have to keep
- the specs a secret i think. Also, there are a lot of programmers on the market
- built on vague assumptions of programming specs, which is a NO GOOD THING !
-
- SO WHY DO YOU MFGRs KEEP YOUR PROGRAMMING SPECS A SECRET ??
- please is there anyone who can explain this ?
-
- Rudi.
-
- Rudi van Drunen
- Electronics design Engineer, University of Groningen, The Netherlands.
- (rudi@igc.ethz.ch)
-