Jerry@eteklabs.com wrote :
>Can anyone point me to the docs on how to do the
>speed upgrade on the zoomer?
the best thing to do is to go this mailing-list archive at :
http://www.grot.com/zoomer/zoomer-list/archives.html
>Is it as simple as getting
>a new crystal/clock and replacing it, or is it more
>involved than that?
It seems that it is risky (see Chris de Herrera note), but after a while,
somme people did a "speed improvement" by sending there unit to the
following address :
Electronics Innovations
1149 East Desert Inn Road #9001
Las Vegas, NV 89109
USA
It looked like they only changed the crystal.
>(or if someone could point me at
>someone who does the modification, that would be
>snazzy as well. :)
> -j
Chris de Herrera wrote on Thu Apr 27 02:24:05 1995
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>From zoomer-list@grot.starconn.com Thu Apr 27 02:24:05 1995
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Date: Thu, 27 Apr 95 00:18 PDT
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From: PDCChrisD@aol.com
To: Multiple recipients of list <zoomer-list@grot.starconn.com>
Subject: Re: Casio Zoomers to blossom with enhancements
Status: OR
Hi,
Unfortunately, the Zoomer CPU is a COMPLETE PC on a chip! This means that
it
is based on the V20 CPU with PCMCIA, Serial, LCD Controller and EMS
Extensions in hardware.
The system CAN'T be just "bumped up" by changing the clock crystal due to
the
interfaces to the 3 to 5v converters required for the serial IO and the
Infrar
ed. Also the crystal is used to drive the whole system internally via a
clock splitter!
AGAIN, AN UPGRADE WOULD REQUIRE A COMPLETE REPLACEMENT OF THE MOTHERBOARD,
AND THE RAM/ROM DAUGHTER CARD! Also, I suspect that it WON'T pass FCC
Class
B requirements either at that speed!
Chris De Herrera
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Sounds like sensible.
But after that Sue Dolezal wrote :
<<<
No it wouldn't! If casio made a custom-made chip, which is what I have
been saying all along, then YOU JUST PLUG IN A NEW CRYSTAL AND CPU.
And of course, the CPU would be the "computer on a chip", just like the
original CPU. Really, it wouldn't be hard, nor expensive for such a
low-end processing unit.
>>>
And finally there is a company which did such speed improvements on the
Zoomer :
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Z O O M E R H A R D W A R E U P G R A D E O R D E R F O R M
---------------------------------------------------------------------
Send to:
Electronics Innovations
1149 East Desert Inn Road #9001
Las Vegas, NV 89109
Name: ________________________________________________________________
Company: _____________________________________________________________
Address: _____________________________________________________________
City: ___________________________ State: _________________ Zip:_______
Country: _______________ Phone: ____________ Email:___________________
Country: _______________ Phone: ____________ Email:___________________
+===+============================+===================+======+=======+
| | | Price per upgrade | S/H | |
|Qty| Description | < 3 | >= 3 | each | Total |
+---+----------------------------+-------------------+------+-------+
| | Hardware Upgrade of ZOOMER | $60(US) | $50(US) | Paid | |
+===+============================+=========+=========+======+=======+
Method of payment:
[ ] Payment enclosed
[ ] Money order
---------------------------------------------------------------------
NOTE:
1) Backup all your personal data and programs for your protection
since we are not responsible for any loss of the above.
2) for your own protection we suggest that you insure your shipment.
3) Check your manufacturer's warranty conditions before sending.
WARRANTY INFORMATION
1) I understand that the Electronics Innovations is not responsible
for any damage or loss of data and/or programs during shipping and
handling and/or upgrading.
2) I understand that my Zoomer must be in good working condition
before sending. Electronics Innovations will test my Zoomer prior to
any modifications and they will inform me of any malfunctions. My
Zoomer will also be tested by Electronics Innovations prior to return
to me.
3) I understand that Electronics Innovations offer six months warranty
on workmanship, but this warranty excludes any warranty on parts used
in this upgrade. Modifying or tampering with my Zoomer's internal
components can cause malfunction and will void this warranty.
Signature:____________________________
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Happy zooming.
Philippe.
Philippe Dallemagne
pdallema@ensem.u-nancy.fr http://www.ensem.u-nancy.fr/~pdallema
TeamGeos : http://home.sprynet.com/sprynet/olympusdrive/teamgeo.htm