[Coco] TRS-80 X-Pad

[billg999 at cs.uofs.edu]

> On Fri, May 24, 2013 at 01:56:01PM -0400, Bill Pierce wrote:
>>
>> Hi, I've recently aquired a TRS-80 X-Pad for the Coco. These were
>> made back in the Coco 2 & 2 days. For those who are not familiar
>> with the X-Pad, it's a pen & drawing tablet for the Coco. It has a
>> cart connected to the port.
>
> X-Pad is a fun toy but I don't use mine much...
>
>> What I want to know, is there any problems interfacing the X-Pad to
>> OS-9? I would really like to try to do something in Level 2 with it
>
> The big problem is that the X-Pad only works at 1MHz.  Unlike the
> SSpak there's no cheap hack around that limit.  I've played around in
> BASIC with running at 2MHz and dropping to 1MHz to actually sample the
> xpad and that seemed to work, IIRC.
>
> I should also note that the xpad needs +12V so can only be used
> directly on a CoCo1, the 2 & 3 have to use it in an MPI to provide the
> power.
>
> Willard

You want to get rid of yours?  I've always wanted one of those.  :-)

bill

> --
> Willard Goosey  goosey at sdc.org
> Socorro, New Mexico, USA
> I search my heart and find Cimmeria, land of Darkness and the Night.
>   -- R.E. Howard
>
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