[A83] Re: Getkey loop

To: <assembly-83@lists.ticalc.org>
Subject: [A83] Re: Getkey loop
From: "Henk Poley" <hpoley@dds.nl>
Date: Mon, 10 Jun 2002 09:38:26 +0200
Reply-To: assembly-83@lists.ticalc.org


>Van: SUCKER [Pieter Van Nuffel] <sucker_pvn@hotmail.com>
>>From: "Henk Poley" <hpoley@dds.nl>
>>>Van: Olle Hedman <alh@home.se>
>>>>>Van: SUCKER [Pieter Van Nuffel] <sucker_pvn@hotmail.com>
>>>>>
>>>>>>TI calculators use the Z80180, right?
>>>>>
>>>>>Actually it's a Toshiba clone called a 'T84C00AM-8'.
>>>>
>>>>Eh, that's the graphics chip...
>>>
>>>T6A04 is the chip in the plain 83. is there a different one in the 83+
or
>>>SE?
>>
>>Sorry, I just _hoped_ that his info was at least based upon some kind of
>>information he found. Since the only toshiba-thing inside the calc is the
>>graphics chip I thought it must be that...
>>
>>Whoops...
> 
>When I saw the back of the 83- one day, there was a giant
>chip with the 'T84C00AM-8' printed on. Here is the site
>of zilog.com where the z80 'Z84C00' is described.
>
>http://www.zilog.com/products/partdetails.asp?id=Z84C00
>
>So I thought that must have been the processor. I seached
>on google and I found out that the 'T84C00AM-8' is a
>cloned chip from toshiba. When you look at an original
>z80, it's quite a big chip, but all the chips in the 83-
>are too small to possibly be an original chip of zilog.

Ah well, as far as I know that shouldn't matter much. It follows the Zilog
prescriptions (Timeing, OP-codes, etc.) quite toroughly, it even has all of
the so called undocumented instructions. So what does it matter to know
that it's actually a different stepping?

	Henk Poley <><