At 06:53 PM 04/13/2000 , Nicki Gemmell wrote:
>Hello,
>
>Thankyou to those who responded to my query about the PS/2 Keyboard and
>mouse. I have found a motherboard which fits the case and has all the
>right bits working.
>
>Another I/O problem. If the bios reports the comm port addresses, does that
>mean that it has detected them and the ports are active? I am having more
>trouble with mice, trying to attach a serial mouse to a motherboard, via the
>comm port adapter. I have never experienced a ribbon failure before but
>wonder if this is the case.
If inside your BIOS, in the CMOS settings portion, you see that the com ports
have been assigned the default addresses, these are the things to check in
order:
1) Did you plug the com port connector on the ribbon cable to the connector
in the right direction, with the colored side of the ribbon cable, (pin#1), to
toward pin#1 on the motherboard for the com port?
2) Did you insure that each pin for the com port on the motherboard went into
each opening of the com port connector on the ribbon cable, (this can be
real tricky, as missing just a little bit may make it look right, but you can
have missed a whole row of pins and only connected to one side).
3) Pickup another com port ribbon cable connector and replace your existing
one, (com port connectors, DB9, are universal and I believe that all
motherboard manufacturers use the same one):
see: http://nospin.com/pc/pcb05-2.html
4) Be sure to try at least a known good serial mouse on the port, I have run into
a situation once where I had several new mouses that were all bad, so check
to be sure your mouse is good.
5) The final conclusion if all the above have been checked is that the connector
on the motherboard is bad and the board needs to be returned under warranty.
I hope this helps...
Bob Wright
The NOSPIN Group
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