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Conference noted::ibmpc-95

Title:IBM PCs, clones, DOS, etc.
Notice:Intro in 1-11, Windows stuff in NOTED::MSWINDOWS please
Moderator:TARKIN::LINND
Created:Mon Jan 02 1995
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3023
Total number of notes:28404

3003.0. "H/W Ring detect support on serial ports on DEC PCs of all ages?" by CHEFS::TREVENNOR_A (A child of init) Fri May 02 1997 09:42

    
    This is a quite horrible question! Is there a document anywhere which
    lists which of our PCs (current and legacy) support hardware Ring
    Detect on pin 9 of their Comm ports? According to the documentation
    I have read the facility is hardware dependent and depends on the UART
    used. Since all our PCs in the recent past seem to have used LSIs to
    form the comm ports I'm hoping that such a list exists somewhere. Can
    anyone help?
    
    Thanks in any case
    Alan Trevennor
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