A89: Re: Hardware Info

To: assembly-89@lists.ticalc.org
Subject: A89: Re: Hardware Info
From: Jeff Flanigan <propalo@yahoo.com>
Date: Fri, 24 Nov 2000 13:32:26 -0800 (PST)
Reply-To: assembly-89@lists.ticalc.org

Ok, cool.  Thanx Olle.  Btw, I figured out who made
the ram and the flash protection chip for HW2 calcs. 
It's Toshiba
(http://doc.semicon.toshiba.co.jp/indexus.htm).  The
specs for the ram can be found at
http://doc.semicon.toshiba.co.jp/pdf_e/docweb123/ee08345.pdf.
 The biggest difference from HW1 ram is that HW2 ram
is slower (85ns vs. 70ns - this only affects
overclocked calcs).  Also, just in case someone's
curious, the specs of the HW1 ram can be found at
http://www.eea.epson.com/pdfs/0v1llmx.pdf.  So you can
add these docs to your great HW info page, Olle.  

-Jeff Flanigan

--- Olle Hedman <oh@hem.passagen.se> wrote:
> 
> I'll answer some of your questions.
> 
> ----- Original Message -----
> From: "Jeff Flanigan" <propalo@yahoo.com>
> To: <assembly-89@lists.ticalc.org>
> Sent: Thursday, November 23, 2000 9:37 PM
> Subject: A89: Hardware Info
> 
> 
> > 1.  Does anyone know what the chip labeled "TI REF
> > 200C040F001" does?  It appears to be chip made by
> TI
> > (if they make any chips).  It's only present in
> HW2
> > calcs.
> 
> It holds all the functions that was built into the
> custom chip in HW1 and
> probably some more.
> This things include (but not limited to) port I/O,
> lcd controller,
> oscillators and chip select logic.
> 
> > 2. What is the name of the Japanese company that
> made
> > the chip labeled "T 9952W HC14A" (only present in
> > HW2).  It's the same company that made the ram on
> HW2
> > calcs.  The logo on it looks like a slanted "T".
> > Correct me if I'm wrong, but the "T 9952W HC14A"
> chip
> > replaced the Orbit flash protection chip present
> in
> > HW1.
> 
> sorry, don't know the answer to that one.
> 
> > 3. The 68k processor on HW2 calcs appears to be a
> > standard Motorola processor, and not a custom
> Motorola
> > chip.  I think it's labeled "MC68SEC000PB16", but
> > since I don't actually have a HW2 calc, I can't
> really
> > tell from pictures.  I do believe that the
> > "MC68SEC000PB16" chip is a standard Motorola
> processor
> > currently in production for handheld devices (ie.
> it
> > doesn't have the custom built in memory mapped I/O
> > that the custom HW1 processors have.)  Perhaps the
> > extra chip labeled "TI REF 200C040F001" handles
> the
> > memory mapped I/O on HW2 calcs.  Can anyone verify
> any
> > of this?
> 
> That is correct. It is a standard 68k chip instead
> of the special embedded
> one in HW1.
> See Q1 too.
> 
> > 3. One last question:  Who made the chip labeled
> > "SM83AL LP324M" on HW1 and labeled "SJM01AD
> LP324M" on
> > HW2?  It's the LCD driver, right?
> 
> Nope, it's not. lcd driver is on the embedded
> microprocessorchip on HW1 and
> in the new big one (TI REF) on HW2.
> LP324 (thats the code for the actuall chipmodel,
> rest is just junk (like
> what factory and what date and stuff)) is made by
> National Semiconductors
> (that S is not an S but an N) and is a quad op-amp.
> What it does, I don't
> know.
> 
> ///Olle
> 
> 


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