home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!usc!howland.reston.ans.net!bogus.sura.net!darwin.sura.net!sgiblab!adagio.panasonic.com!chorus.mei!oskgate0.mei!icspub!wnoc-kyo!kuis!aegis!davidg
- From: davidg@aegis.or.jp (Dave McLane)
- Newsgroups: comp.dcom.modems
- Subject: Re: Can I upgrade a 16450 uart to a 16550a?
- Message-ID: <3667@aegis.or.jp>
- Date: 12 Jan 93 15:01:40 GMT
- References: <3602@aegis.or.jp> <726658957snx@n5ial.mythical.com> <3653@aegis.or.jp> <C0pp9s.EJq@ns1.nodak.edu>
- Sender: daemon@aegis.or.jp
- Lines: 57
-
- wilken@plains.NoDak.edu (Scott Wilken) writes:
-
- >In article <3653@aegis.or.jp> davidg@aegis.or.jp (Dave McLane) writes:
- >>jim@n5ial.mythical.com (Jim Graham) writes:
- >>
- >>looking things hidden under the power supply. It turns out they
- >>looked funny because they were VLSI's not UARTS. Live and learn....
-
- >Well, I'm a bit hesitant to post this, since we are now delving into
- >something that is borderline off-topic, and just plain petty however..
-
- > #1 I do agree with you about Jim's reply... The post he was
- > replying to concerning "sales droids who are clueless"
- > qualified (at least in my eyes) as wrong, since the original
- > poster did mention that Dell told him he had "a VLSI" (sic)
- > and that this in itself disqualified him from having a real
- > 16450..
-
- Agreed.
-
- > #2 Your use of terms is incorrect here.... In the above portion
- > I quoted, you should have said ASIC instead of VLSI. VLSI
- > is just a description of how many logic gates are used in
- > the design. What you should have said was that Dell uses
- > ASICs (Application Specific Integrated Circuits) implemented
- > in VLSI (Very Large Scale Integration). You see now that you
- > cant compare VLSI to a UART (very much like Apples to Oranges)
- > You either have to say ASIC compared to a UART, or a VLSI
- > compared to a LSI (I supposed a UART is possibly an MSI device
- > as well since im not familiar with the 16x50 family at the bare
- > hardware level).
-
- I don't consider this a question of correctness only a problem of
- communcation. Since I don't feel I'm in a position to tell Dell
- what they should or should not call their chips, I'm simply using
- their terms as that's what they call them.
-
- While I would agree that 'VLSI' isn't really the best term, that's
- what the original poster was the term the guy at Dell used. In
- another post I quoted the User's Guide for the Dell 325D which calls
- the ports "INTEGRATED DEVICES" (sic) on page 2-10 and "built-in" in
- the Technical Specifications on page A-1.
-
- I myself would just say, "The parallel and serial ports are all
- together in one chip and it's soldered onto the motherboard so you
- can't change it. You have to get an add-on board which is what I
- did for my Dell 325D and the dropped character problem disappeared."
-
- IMHO that's the point: use terminology which allows you to
- communicate enough to solve the problem!
-
- Dave
-
- --
- Dave McLane
- JUNET: davidg@aegis.or.jp (ONLY within Japan: post otherwise)
- Nagaokakyoshi, Kyoto Japan Tel: +81-75-951-1168 Fax: +81-75-957-1087
-