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- Newsgroups: sci.electronics
- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!spool.mu.edu!sdd.hp.com!decwrl!adobe!pngai
- From: pngai@adobe.com (Phil Ngai)
- Subject: Re: GAL LOGIC
- Message-ID: <1992Sep14.041800.7338@adobe.com>
- Sender: usenet@adobe.com (USENET NEWS)
- Organization: Adobe Systems Incorporated
- References: <1992Sep9.200458.8595@adobe.com> <92254.103444LEEK@QUCDN.QueensU.CA> <1992Sep13.184958.6583@adobe.com>
- Date: Mon, 14 Sep 1992 04:18:00 GMT
- Lines: 32
-
- In article <92254.103444LEEK@QUCDN.QueensU.CA> <LEEK@QUCDN.QueensU.CA> writes:
- >A trademark identifies a line of products so that it won't be confused
- >with something similar. I mean is there any difference between
- >
- > PAL16V8 (one-time programmable, fuse based, AMD)
- > GAL16V8 (EEPROM based, erasable, Lattice)
-
- Can I use a PAL16R4 in place of a PAL16R8 because they both go by the
- trademark PAL and so I don't have to worry about confusing one product
- with a similar product?
-
- You are making unwarranted assumptions. PALs do not have to be one time
- programmable. Two counter examples are the AMD PAL CE and the Lattice
- GAL devices. Yes, a GAL is a PAL, although not all PALs are GALs.
- Another counter example is the UV erasable PALs.
-
- Nor does a GAL have to come from Lattice. GAL simply means generic
- array logic, that is, a 16V8 can replace any of 16R4, 16R6, or 16R8.
- THAT is what the GENERIC means.
-
- It so happens that Lattice invented the concept (and they deserve
- kudos for their cleverness) but the programming algorithm is no
- more related to whether a device is a GAL than to whether a device
- is an EPROM or FLASH or EEPROM etc.
-
- If you ask for a GAL 16V8 and don't specify which vendor, then you have
- no cause to complain if you don't get the vendor you wanted (but didn't
- ask for).
-
- --
- My opinions are my own.
-
-