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- From: yue@grebe.Stanford.EDU (Kenneth C. Yue)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: Question about serial port speed
- Message-ID: <1992Dec30.042610.14317@CSD-NewsHost.Stanford.EDU>
- Date: 30 Dec 92 04:26:10 GMT
- References: <1992Dec29.001824.29137@CSD-NewsHost.Stanford.EDU> <1992Dec29.162442.3269@spectrum.xerox.com>
- Sender: news@CSD-NewsHost.Stanford.EDU
- Organization: Computer Science Department, Stanford University, CA, USA
- Lines: 26
-
- In article <1992Dec29.162442.3269@spectrum.xerox.com> damouth@wrc.xerox.com writes:
- >In article 29137@CSD-NewsHost.Stanford.EDU, yue@flamingo.stanford.edu (Kenneth C. Yue) writes:
- >>I have a no name clone 486 with a no name multi-I/O card that includes
- >>two serial ports (COM1 and COM2), one parallel port and one game port.
- >>A mouse is now connected to COM1. How do I know if I can connect a
- >>high speed modem (>9600bps) to COM2? Does every PC serial card in
- >>existence support speed higher than 9600bps (e.g. 57600bps)? If not,
- >>how do I tell if mine supports higher than 9600bps? Thanks in advance.
- >>
- >>Ken
- >
- >You can pull the cover off the computer and look at the part number on
- >the UART (8850, 16450, 16550). For your multi-IO board this may not
- >work, because the UART function may be emulated inside another
- >multi-purpose chip.
-
- The UART on the I/O card has part number 82450.
-
- >Since you have a quite new machine, you probably have at least a 16450,
-
- It is a 25MHz 486. I bought it in May 1991. I wouldn't call it a new
- machine. :-) When I bought the computer, I just asked for two serial
- ports, one parallel port and one game port, but didn't specify how
- fast the serial ports should be.
-
- Ken
-