Adding more EEPROM

Archiver

Hi, I'm a newbie to the basic stamp, but I was wondering if I could
actually add more EEPROM, eg. instead of using the standard 2Kb that
comes with BS2, can I replace it with a larger one?

Archiver

From: "hualoong" <alexting@a...>
> [noparse][[/noparse]...] wondering if I could actually add more EEPROM,
> eg. instead of using the standard 2Kb that comes with
> BS2, can I replace it with a larger one?
>
Replacement is not practical, but it's easy to add a lot more if you need
it. Parallax sells supplemental EEPROM with details on how to interface it
to your Stamp. Or if you feel brave, you can roll your own design.
(Personally, I wouldn't bother.)

Gary

Archiver

Asked and answered.
The BS2 PBasic engine uses a 2Kbyte memory space.
If you do a 'roll-your-own' BS2, using a parallax
OEM programmed PIC, it will STILL only use 2KBytes
of EEPROM for Program Memory.

There do exist BS2 variants that have more EEPROM on them,
look at the Parallax site. Even then, though, you must
program in 2Kbyte 'pages' -- you can't just call
subroutines on other 'pages' without some work
arounds. You can RUN code on other pages.

I believe you can WRITE to the additional EEPROM.

So the short answer is NO, you can't increase the
Stamp's Program eeprom space by installing a
larger eeprom.

However, you can easily add SPI EEPROM's to increase
the EEPROM 'RAM' space for logging purposes.
The parallax site has 'Nuts&Volts' articles on this.


--- In basicstamps@yahoogroups.com, "hualoong" <alexting@a...> wrote:
> Hi, I'm a newbie to the basic stamp, but I was wondering if I could
> actually add more EEPROM, eg. instead of using the standard 2Kb
that
> comes with BS2, can I replace it with a larger one?