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- Xref: sparky comp.dcom.modems:18443 comp.os.os2.misc:40270
- Path: sparky!uunet!cs.utexas.edu!sun-barr!olivea!spool.mu.edu!umn.edu!umeecs!quip.eecs.umich.edu!dmuntz
- From: dmuntz@quip.eecs.umich.edu (Dan Muntz)
- Newsgroups: comp.dcom.modems,comp.os.os2.misc
- Subject: Re: Have I been hosed?
- Message-ID: <1992Dec23.172547.20292@zip.eecs.umich.edu>
- Date: 23 Dec 92 17:25:47 GMT
- References: <62k6VB4w165w@zswamp.UUCP> <1992Dec23.100012.24624@netcom.com>
- Sender: news@zip.eecs.umich.edu (Mr. News)
- Organization: University of Michigan EECS Dept., Ann Arbor
- Lines: 18
-
- In article <1992Dec23.100012.24624@netcom.com> marks@netcom.com (Mark Sherred) writes:
- >National has a very nice application note about the different UARTS.
- >It is AN-493. The 'F' stands for FIFO. The 'N' means a plastic package.
- >At high baud rates, the PC may not always service the UART's interupt before
- >a second character is received. The NS16550AFN has a 16 byte receive FIFO
- >and another 16 byte transmit FIFO. The chips powers-up with the FIFOs
- >disabled, so you need software that knows how to enable them.
- >
- >The bottom line is it sounds like you got hosed.. sorry.
- >The NS16550AFN sell here at Fry's Electronics for between $10 to $15.
- >
-
- 16550A == 16550AN == 16550AFN == PC16550 == PC16550AFN
- They all have fifos. None have bugs (well...not the bug that the 16550 had).
- 16550AN will work just fine.
-
- -Dan
- dmuntz@eecs.umich.edu
-