On Tue, 10 Jan 1995, Charles M. Hannum wrote:

It plugs into a built in mouse port on the back of the PC.
The reason I used IRQ 12 was because I  saw in one of the
man pages ( that I can't remember right now, but can later get
for you) that came with 1.0. 

Once I get it configured, I should be able to start up xfree86. It 
complains, now, that it can not see a mouse connected to the system.

> 
>    I am trying to get the Microsoft mouse to appear during the system 
>    boot. I added the line...
> 
> 	   device 	mms0	at isa? port "IO_MMS1"	irq 12
> 
>    to  the kernel parm file...
> 
> The `mms' driver is for Microsoft InPort mice (and compatibles).
> These usually aren't configurable to IRQ 12.  Does your mouse plug
> into a special card, the serial port, or something that looks a lot
> like the keyboard port?
> 
>