Re: TI-H: REAL Internal Memory Expansion
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Re: TI-H: REAL Internal Memory Expansion
>This sounds pretty awesome, but one thing:
>The DRAMs will need to be dynamically refreshed, which will put one hell of
>a drain on the battery.
For 8MB it is 120mA. Also, you only refresh the areas in ram which contain
data. That could mean the first 100k only gets refreshed... Not too bad.
20mA.
>Also, they wil need to be refreshed even when the calc is off.
>Plus, this would still neeed to be implemented through the link port, cause
>the 32k ram internally is the limit of its capabilities for direct ram access.
Nope. Use a software MMU. Do you think I'm doumb? :P
>it would be like a e2 that requires constant large amounts of power, is a
>whole lot bigger, and can be writen to as many times as you want.
I know exactly what it is. If I didn't, I would ask. Gee... DRAM is sooo
simple.
>At 02:37 PM 10/7/98 -0800, you wrote:
>>
>>I've been looking at specs, and its possible to replace the internal SRAM
>>with DRAM. Then we could have 16MB accessable to our calcs at any time.
>>
>>Not too hard either.
>>
>>
>>
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