[rescue] WTB: Logitech C7 Mouse

Patrick Giagnocavo patrick at zill.net
Sun Jan 9 09:37:15 CST 2011

On 1/9/2011 4:11 AM, Nigel Williams wrote:

> and that only a serial mouse is to be connected to the machine when
> running OS/2 2.1 otherwise erratic or unreliable operation would be
> experienced, presumably due to some interrupt handling deficit.
> I now feel differently about the lowly serial-port-based-mouse...

Early versions of OS/2 2.x had bad interrupt handling, unless you were
on an MCA based motherboard.  Since the PS/2 protocol uses 3 bytes, you
can end up with a situation where losing 1 byte completely screws
everything up.  Serial port based mice do not have that issue.


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