lkml.org 
[lkml]   [1998]   [Nov]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: The history of the Linux OS
    On Nov 26, Daniel Engstrom wrote:

    > On 25 Nov, Alex Buell wrote:
    > > Ah yeah, the infamous COM4 bug with S3 chipsets.
    > Actually it had precedence: some IBM video board (8514/A??) used that
    > very address first.
    >
    > > Seems some fuckwit used the usual COM4 I/O port as one of its I/O
    > > registers.
    > It wasn't the COM4 address but something like 0xBE8 with the low 10 bits
    > identical to 0x3E8, which is the COM4 base port. You'll need an
    > el-cheapo serial board with 10-bit address decode only to be bitten by
    > this.

    please don't add confusion with wrong numbers:

    IBM8514/A (and thus S3/ATI) uses 0x[4-b][26ae]e8 addresses which all will give
    0x2E8 when cut off to 10 bits resulting in collision with COM4 !
    0x3E8 is COM3...

    > > Ahh, that particular chipset designer should have been taken out and made to use Microsoft
    > > products in eternity (with a Windows 95 Beta!).
    > Or the engineer at IBM who decided that only decoding the low 10 bits
    > for i/o port accesses was enough for all future.

    yep:(
    or maybe it's the account manager who decided that there is no more money
    for additional 6+ NAND inputs and thus one more chip on the board ?!


    Harald
    --
    All SCSI disks will from now on ___ _____
    be required to send an email notice 0--,| /OOOOOOO\
    24 hours prior to complete hardware failure! <_/ / /OOOOOOOOOOO\
    \ \/OOOOOOOOOOOOOOO\
    \ OOOOOOOOOOOOOOOOO|//
    Harald Koenig, \/\/\/\/\/\/\/\/\/
    Inst.f.Theoret.Astrophysik // / \\ \
    koenig@tat.physik.uni-tuebingen.de ^^^^^ ^^^^^

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.rutgers.edu
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:45    [W:0.022 / U:118.116 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site