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From: vcl@mimas.UUCP (Victor C. Limary)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: BIOS
Message-ID: <kwqNZ1w163w@mimas.UUCP>
Date: 31 Mar 91 05:10:43 GMT
Organization: Albuquerque Academy, Albuquerque NM
Lines: 35


  I would like to know if I need to change my BIOS.  Here's my problem:

    When I lock the com port to any rate higher than 9600 bps, I start 
    losing characters.  It happens from both Procomm Plus 1.1B and Waffle 
    1.64's UUCICO (program to transfer Usenet feeds).

  Here's my hardware setup:

    Leading Edge D3 - 386-16Mhz AT bus computer
    16450 UART (at least that's what X00.SYS and PUMA say.  I'm not sure, 
                since my motherboard incorporates the UARTs on VLSI)
    Intel 9600EX modem
    Phoenix 80386 BIOS V1.10 06  dated 1988(?)

  When I try using any comm port rate over 9600 bps, characters start 
dropping every now and then.  DSZ seems to work fine even though it loses 
characters, but the throughput then drops to about 700cps.  YMODEM-G just 
quits because of the errors.  I know that I should get a serial port card 
with a 16550AN UART (since my computer has the serial ports built-in, and 
getting a new UART won't work because of the VLSI) so that I can properly 
use high baud rates, but how much does the BIOS effect the data transfer? 
I read in the DSZ manual that bad BIOS results in lost characters, and if 
that's so, then I would like to get new BIOS and a new UART/serial card 
so that I can get better transfer rates.

Thanks.

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     |  O   O  |         Victor Limary
    <|    <    |>        mimas!vcl@bbx.basis.com
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      \   U   /
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