Re: Mouse+Win+UART16550

From: Jiri Kvarda <kvarda@VC.CVUT.CZ>
Subject: Re: Mouse+Win+UART16550
Date: Fri, 3 Mar 1995 14:47:50 +0100

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> kolega si poridil novy mainboard s integrovanymi porty s tim svabem
> co ma vyrovnavaci pamet 16B (myslim ze jeto UART 16550) a ma nasledujici
> problem - V DOSu mu mys funguje dobre, v XWindows (Linux) take bez problemu
> ale v MS Win nikoliv.
 
Pro Windows je novy serial.386, ktery resi vyse uvedeny problem s mysi.
Prislusny patch poslu autorovi dotazu v atachementu.
 
Vytah z infa MS:
 
======================================================================
  Microsoft(R) Product Support Services Application Note (Text File)
   WG1001: UPDATED SERIAL.386 DRIVER FOR WINDOWS(TM) FOR WORKGROUPS
======================================================================
                                                   Revision Date: 3/94
                                                       1 Disk Included
 
The following information applies to Microsoft Windows for Workgroups,
version 3.11.
 
When you use Windows for Workgroups version 3.11 with serial
communications software, you may experience the following problems:
 
 - If you are using a Pentium(TM)-based machine with a 16550 UART chip,
   your system stops responding (hangs) if there is data in the chip
   when the serial communications application attempts to open the
   communications port.
 
   A problem with the 16550 UART implementation causes the chip to
   become trapped in a mode in which data is always detected in its
   FIFO buffer.
 
 - When you are using communications software, you may be able to make
   one connection after starting Windows for Workgroups, but any
   subsequent connections fail and may hang your system.
 
   This problem occurs when SERIAL.386 sends an extra NUL character
   through the port when the communications software calls the
   CloseComm application program interface (API) function. While this
   does not normally cause problems, your second connection may fail
   with some modems.
 
The WG1001 disk included with this Application Note contains an
updated SERIAL.386 driver that corrects both of these problems.
 
-----------------------------------------------------------------------
Jiri Kvarda                       Ceske Vysoke Uceni Technicke
e-mail: kvarda@vc.cvut.cz         Vypocetni centrum, ICSC
tel.: +42 2 2435 3306             Praha, Cesko

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