Re: No-Slot Clock & Apple IIc+

[dempson@actrix.gen.nz (David Empson)]

Gus Vilomar <gvilomar@bellsouth.net> wrote:

> I just bought a Dallas Smartwatch (aka No Slot Clock) for the Apple II
> series of computers and I don't know where it should go.  When I opened my
> Apple IIc+ (not IIc), I found two removable chips: (1) a 28pin chip w/
> "Monitor ROM" written on the board and (2) a another chip (I'm assuming the
> ROM chip -more than 28pins) w/ "65C02" written on it.

The latter is the CPU, not a ROM.  "65C02" is the name of the processor
used in the Apple IIc family and also in the enhanced IIe.  It is a
slightly improved version of the 6502 which was used in the original
Apple ][, ][+ and unenhanced IIe.

There is only one ROM in the IIc+: it is probably 32KB in capacity, like
the UniDisk revision of the IIc and later IIc models, hence it would be
a 28 pin chip.

Assuming the SmartWatch works in the IIc+ (and I don't know of any
reason why it wouldn't), you need to put it under the chip labelled
"Monitor ROM".  Make sure you get it around the right way!

One other point: I hope you got the right variety of the SmartWatch.
The part number should be DS1216E.  The letter suffix indicates the type
of chip which the SmartWatch works under, with "E" being a 28-pin ROM.
The suffix should be printed in the form of a large green letter (silk
screened) on the small circuit board which is visible beside the DS1216
chip inside the SmartWatch.

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand