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RE: A92: FLASH technology, ti92+, and 89
Well, I don't know the best answers to all your questions, but I'll try
to answer a few.
A flash ROM is basically an inexpensive EEPROM, but it works in the same
manner.
I'm not sure how to update the new software, but you can't change or
delete it by pressing keys. As for the 500k, it says OVER 500k. It has
approxiamtely 188k available memory and 384k is archive memory. That's
572k, but there are preset variables like pi and e which take up more
memory. I'll bet it's 384k + 256k physical memory, which is 640k
memory. That's probably a slightly better number. You can take a look
at it yourself, the URL is:
http://www.ti.com/calc/docs/89.htm
The TI-92+ module will support assembly just like the 83 and 86
calculator. I don't know how much documentation comes with it because
it has not been released so only the people at TI would know that.
>----------
>From: Robert Caldwell[SMTP:rc_ware@hotmail.com]
>Reply To: assembly-92@lists.ticalc.org
>Sent: Friday, March 13, 1998 12:01 PM
>To: assembly-92@lists.ticalc.org
>Subject: A92: FLASH technology, ti92+, and 89
>
>
>FLASH technology
>
>what exactly is this anyway? i mean i read in one place that it is like
>EEPROM (electronically eraseable programmable read only memory) which is
>just basically RAM except that it isn't erased when there's no
>electricity applied to it, and then i go somewhere else and it tells me
>that it's just ROM that can be changed only by the ti company or some
>crap.
>
>here's my reasoning--if it is EEPROM and it does store the ROM-image to
>run the calculator then can't a person accidentally delete this and the
>calculator will become unusable? if it's just ROM then why does it say
>that 300 and some of it can be programs and data, is that just for the
>ti company to use to upgrade the ROM? 500K is an uneven pin number to
>me...how much exactly is this FLASH using--i mean 18 pin combinations
>give 256K possible selecting and 19 pin combinations gives 512K you
>can't have a partial pin combination (in a sense that pin is that thing
>that sticks out of a microchip).
>
>TI-92+ and 89
>
>when the 92+ module comes out will it be able to do assembly programming
>like the 83s and 86s? if so, how much documentation are we going to
>receive from the ti company about how to use it, what locations in
>memory do what, what jumps are legal, etc.? if the 92+ isn't supporting
>assembly then why did i read somewhere that the 89 was, and yet the 92+
>and 89 are supposed to be similar in ROM?
>
>if i'm wrong in any way, please feel free to flame me all you want, just
>as long as i get some sort of response.
>
>-Rob
>
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