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Frank Gruendel | 1 Jul 2005 01:40
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Looking for LTC902 chip datasheet

Hi gang,

does anybody have a datasheet for a Linear Technology
driver chip LTC 902? That's the chip that drives the
serial port of the older Newton models. Or could anyone
point me to a url where I can find such a beast?

Thanks

Frank

-- Newton software and hardware at http://www.pda-soft.de

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Dan | 1 Jul 2005 01:46

Re: AA Battery Tray Issues


> When I place the AA battery tray (with charged batteries) in my Newton MP 2100, it VERY briefly looks as if it
will boot up, and then it dies. What gives? I've tried this with two different sets of newly-charged AA batteries.
>  
>  
> Also, does my AA battery tray need to have some kind of metal contacts on its underside, as the rechargeable
pack has?

That is odd.  Did you try pressing the reset button? I would test all 
the AA's, perhaps you have a bad one in the bunch (or more than one). 
As for the contacts, no you don't need them.  They are only for 
rechargeable packs to tell the Newt that it is a rechargeable pack and 
to read the battery temp.

I would also try pressing the reset button to see if that helps.

-Dan
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Frank Gruendel | 1 Jul 2005 02:17
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Re: Connection Problems

> I have a Lucent Turbo Bronze wifi card and have tried
> to connect through my airport extreme and also tried
> a computer to computer connection on both my iMac G5
> and my Powerbook. I've used both OS X 10.3 and 10.4
> and OS 9, all to no avail. I've had several people try
> to "talk" me through the setup and even that failed.
> Is it the Bronze card that is the problem?

I think it depends on the router you want the card to
talk to. I have a couple of Turbo Bronze cards, and I've
never been able to make them talk to my DrayTek Vigor
router. It didn't matter whether I tried the card in
a Newton (which works perfectly well with a Lucent Silver)
or in a notebook running Windows 98 (which also works
with the Lucent Silver).
People have reported success with NetGear routers I think.
And many have reported problems with Lucent Bronze cards
and Airport Extreme stations. What is certain is that you need
to turn of WEP since the Bronze Turbo card does not support
this.

If, by the way, someone is aware of a place where a firmware
update for this card can be downloaded, I'd be thankful for
a hint. I'm not sure, though, if this card can be updated at
all.

Just in case you haven't seen it yet, the following page
(under construction) might be of a little help:

http://www.pda-soft.de/ethernetconnectivity.html
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Frank Gruendel | 1 Jul 2005 02:17
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Re: Jaggies

> By chance I ended up with several 2100's (now
> including my main newt :( ) that suffer the jaggies.=20
> Is there a good source for replacement digitizers?

The only one I'm aware of who might have new digitizers
is Calvin Greer. He is the guy who also sells the
replacement backlights, and he used to sell a backlight
and a digitizer as a set. Not sure if they are still
available, though.
Other than that, your only chance would be getting a
decent used Newton or a dead one with a good digitizer
and do a bit of transplant surgery.

> I thought about trying to clean the jaggied units
> but maybe it's not worth the time.=20

Well, it can't hurt, and it does not take much time
to do it. If there's much dirt in the area where the
digitizer touches the inside of the bezel, removing it
might help to a certain degree. After all, you have
nothing to loose, have you?

Cheers

Frank

-- Newton software and hardware at http://www.pda-soft.de

--

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ADyson | 1 Jul 2005 02:42
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Re: Looking for LTC902 chip datasheet

Hi Frank
 You may want to check these folks

http://www.apexic.com/

----- Original Message ----- 
-snip-
> does anybody have a datasheet for a Linear Technology
> driver chip LTC 902? That's the chip that drives the
> serial port of the older Newton models. Or could anyone
> point me to a url where I can find such a beast?
>
-snip-
>

--

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postoffice | 1 Jul 2005 01:45

Returned mail: User unknown

The original message was received at 2005-06-30 19:45:55 -0400
from postoffice.local [10.0.0.1]
   ----- The following addresses had permanent fatal errors -----
<wonder777 <at> globalnetisp.net>

   -----Transcript of session follows -----
... while talking to postoffice.local.:
>>> RCPT To:<wonder777 <at> globalnetisp.net>
<<< 550 5.1.1 unknown or illegal alias: wonder777 <at> globalnetisp.net
550 <wonder777 <at> globalnetisp.net>... User unknown

--

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postoffice | 1 Jul 2005 01:45

Returned mail: User unknown

The original message was received at 2005-06-30 19:45:58 -0400
from postoffice.local [10.0.0.1]
   ----- The following addresses had permanent fatal errors -----
<wonder777 <at> globalnetisp.net>

   -----Transcript of session follows -----
... while talking to postoffice.local.:
>>> RCPT To:<wonder777 <at> globalnetisp.net>
<<< 550 5.1.1 unknown or illegal alias: wonder777 <at> globalnetisp.net
550 <wonder777 <at> globalnetisp.net>... User unknown

--

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Matthew Hudson | 1 Jul 2005 05:23
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Re: Looking for LTC902 chip datasheet

Unfortunately that is just a parts broker. He needs a data sheet or
data book at or around that time (most IC's from that era are EOL) I
checked my library and I don't have a Linear Technology data book -
although it is a 422 line driver. Do you just need a pinout or actual
specs?

-Matt =20

On 6/30/05, ADyson <ADyson <at> rogers.com> wrote:
> Hi Frank
>  You may want to check these folks
>=20
> http://www.apexic.com/

> > does anybody have a datasheet for a Linear Technology
> > driver chip LTC 902? That's the chip that drives the
> > serial port of the older Newton models. Or could anyone
> > point me to a url where I can find such a beast?
--

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Official Newton FAQ: http://www.chuma.org/newton/faq/
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Alex Leão | 1 Jul 2005 05:51
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Re: Lucent WaveLan Turbo Gold

2005/6/30, Andrew Fox <andrewfox <at> mac.com>:
> Hi Alex,
> I suppose this is what you'd call after sales support:) I'm the guy
> in New Zealand who sold you the card and antenna.
---------------

Lol, what a little world! Thank you for the contact Andrew!! I just
write for you in PVT. Thank you again for the "support" service!

--=20
Alex Le=E3o
--
alexleao <at> gmail.com
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Adriano | 1 Jul 2005 14:31
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Dock at 900K via serial hardware clocking

Hi,

i need help, as i cannot find the needed infos to make an accessory 
which could let my MessagePad dock at 900K,
nor i have the skills to develop a single row of software, if it was 
possible to do it this way.

Here is what i know:
  - thanks to software clocking (ser230400 extension) actually is 
possible to connect the MessagePad to a Mac desktop at speedz of 
230.4Kbps,
but the Newton mainboard serial chip (Zilog 8530) is capable of speedz 
of 2000Kbps (2Mbit/s) when using external hardware clocking.
[I.e.: some old serial Epson printers used an onboard hardware clock 
device to push at 900K the serial connection with a Mac,
and old serial QuickCam cameras estabilished connection at 1Mbit/s for 
audio/video communications]

Zilog datasheet is available to the link below:
http://www.zilog.com/docs/serial/ps0113.pdf

Some thoughts:
  - i think that if we could dock the MessagePad at 2Mbit/s, it would be 
great! Don't you?

  - although i am aware of the differences between a Macintosh and a 
MessagePad mainboard, as the Zilog 8530 serial chip was used on old 
Macs too,
maybe some compatibilities on the serial hardware layout could exist.
(Continue reading)

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Gmane