[NTLK] how to ID 2000-->2100 upgrade ROM board?

[Dennis B. Swaney]

On 14/08/10 11:04PDT, Michael Grossman wrote:
>
> I recently bought a Newton messagepad 2000 with a broken screen and
> corroded batteries because it had a MP2100 sticker on it.  I have read in
> this list that the upgrade is just putting a different board into the
> 2000.  So I figured I could pull it and swap it into my working MP2000.
>
> It occured to me, after carefully taking apart the MP2000 with the cracked
> screen, that I had no idea what the upgrade board looked like. For all I
> know, someone may have already done the swap and left their old
> 2000 ROM board in it! (The person who sold me it had no idea.)
>
> The board's markings are almost identical to the ones on this board:
> http://www.kimberlyheuthe.de/2100RomBoard_b_large.jpg
>
> and this one from a MP2000:
> http://www.ifixit.com/Teardown/Apple-Tablet-Teardown/2153/3
>
> I say almost because it DOES NOT EXACTLY MATCH either board.
> Here are the differences:
>
> The chip at U16 says:
> LHME5BT4
> SHARP
> JAPAN
> 9707 D
>
> The chip at U17 says:
> LHME5BT3
> SHARP
> JAPAN
> 9707 D
>
> At the top of my board, there is a black number 72 stamped and a white
> number 2 a few mm above and to the right of the 72.
>
> Is this a plain old MP2000 ROM board or an upgrade board?
>

Underneath the ROM board are the RAM chips. IIRC a 2000 has 5MB of RAM 
and a 2100 has 8 MB. How much is on the new board?


-- 
Sincerely,
Dennis B. Swaney

Newton MP 2100
iPhone 3GS
iPad