Re: TI-H: Internal memory expansion II


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Re: TI-H: Internal memory expansion II




I'm new at this so I'm probably not even looking in the right spot, but I
don't see anything like what you described, certainly not two IC's that
look like each other.  Also I don't know the actual amount of memory on
the 86, but the amount that is availiable to the user is just over 98K.

On Thu, 13 Aug 1998 05:34:36 PDT "marcel groenendijk"
<m_groenendijk@hotmail.com> writes:
>
>Thanks for the replies. I will write a doc explaining the procedure so 
>
>everyone who wants to can make such a expansion. About the 86, two 
>people asked me if this was possible on a ti86 calc. I don't have one 
>so 
>i can not check this, but you can check it for your self. First of all 
>
>how much memory has the 86? If it has 32K it is most likely possible 
>(If 
>your calc says that 28K or so mem is available it is most likely 32K, 
>but some memory is used for other things like the screen.) Secondly 
>you 
>should open your calc and look for a ic with 28 pins divided in two 
>rows 
>each on one side of the chip (In the 85 there are two.) You should 
>first 
>look for a ic with TI on it. That ic is most likely the ROM of the 
>calc. 
>The second ic should have a number, a '-' and then two-digit number 
>which identifies the speed of the RAM (like 10 = 10 nanoseconds 
>access.) 
>If there are more 28 pins ic's in the 86, write down all information 
>and 
>let me know. I can't say when the doc is ready because work starts 
>soon, 
>but it'll probably not take long, so keep your eyes on the mailing 
>list.
>Something different, is there a way to get the source code of the 
>atmel 
>processor for the e2 or the code for the pic for the remote control? 
>(the standard version.) I can program them myself and i have some 
>lying 
>around so i don't really want to order one.
>That's all!
>
>Neil
>
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