[Coco] DS1216 Smart Watch chip and the CoCo

[Arthur Flexser]

I think the SmartWatch would work under the internal ROM if you set the
base address to $8000.   You'd have to socket the soldered-in ROM first,
though, getting it out intact, which requires some delicate desoldering.

If you have a spare MPI slot, it would be easier to control the SmartWatch
via that, either in a disk controller or some ROMpack with an appropriate
socket.  If you're using an RS232 Pak, you could probably put the
SmartWatch in there in place of its useless ROM.

Art

On Sat, Mar 31, 2018 at 10:41 PM, Rogelio Perea <os9dude at gmail.com> wrote:

> Been using the DS1216 chip on my CoCo 3 setup for years installed in the
> disk controller.
>
> For OS9 (stock L2) use I got a couple of utilities from CompuServe called
> SWSET4 and GETCLK4 which work to set and read the DS1216 when installed on
> the disk controller, usually set on slot 4 of the MPI. The docs for those
> utilities stated to use the suffixed "4" utility variants even if the dik
> controller is attached directly to the CoCo with no MPI in between - there
> were I recall a SWSET3 and GETCLK3 for use when the DS1216 was set on other
> slots of the MPI.
>
> Modern day scenario: using the CoCo SDC I would like to have access to the
> DS1216 from there, I assume I could mount the Smart Watch chip within the
> CoCo under the ROM and have it read from there and not depend on the disk
> controller being attached... is this a doable scenario?
>
> --
>
> As a side note, the DS1216 chip I installed on my FD-502 controller is
> still working after decades of use, still keeping time... I expected the
> battery to die by the turn of the 21st Century first decade but it still
> works. Bought a few spares a year ago or so just for the time when it
> actually kicks the bucket.
>
>
> -- RP
>
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