RE: TI-H: TI-89
[Prev][Next][Index][Thread]
RE: TI-H: TI-89
Mel and I already talked about that. It would be huge. SIMMS are DRAM
which means DYNAMIC and they need a special interface/refresh circut to
work. You can't back them up when it is turned off either. The refresh
circut is either on-memory on or off-memroy off...
>Hey, the way that the memory works in all the calculators (except 92
>maybe) is all the memory is reset when the batteries are removed. This
>means that this is ram and not flash ram. Now a cheap way to expand the
>memory might be to use the old 1MB 30-pin SIMMs from computers. Those
>are very easy to find at a very cheap price. If someone had enough time
>to make those into a memory expander, then memory expanders would be a
>lot easier to build and there wouldn't ever be a problem of finding
>memory chips or parts being discontinued.
>--
>
> -iceboxman
>TI-CALC Discoveries
>http://ticd.home.ml.org or
>http://www.geocities.com/SiliconValley/Peaks/4152/index.html
>
>iceboxman@geocities.com
>
>
>>----------
>>From: gussie@alaska.net[SMTP:gussie@alaska.net]
>>Reply To: ti-hardware@lists.ticalc.org
>>Sent: Friday, March 20, 1998 10:39 AM
>>To: ti-hardware@lists.ticalc.org
>>Subject: Re: TI-H: TI-89
>>
>>
>>>grant, did you say that you talked to TI about more possible features
>>>for the 89?
>>
>>I told them in september to make a 92 with SIMM support the size of a
>>TI92....aparently they don't "use" their calcs too much durring testing...
>>:)
>>
>>
>>