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Interfacing A Standard EPROM — Parallax Forums

Interfacing A Standard EPROM

ArchiverArchiver Posts: 46,084
edited 2004-03-30 12:33 in General Discussion
Hello. yes, yes, I am new to this group, since I just got by Parallax
Basic Stamp 2 OEM Board, 4x20 parallell LCD, keypad, keypad decoder
and some other goodies. I am so very much interested in getting
uderway in programming my Basic stamp. My question is this..Is there
a way to use, say, a standard 27C128 28-Pin DIP EPROM chip to hold my
Basic code instead of using the on board 8 pin DIP 24LC168 EPROM that
comes on the Basic Stamp 2 OEM board? I have a "Superpro-Z" EPROM
programmer that I would use to program my Basic code into this 27C128
chip. I know it might sound silly, to be using a large (Overkill) 28
pin DIP (27C128) EPROM chip to hold my code rather than just using
the standard, on-board tiny 8 pin dip 24LC168 EPROM, but isn't the
whole idea of playing with and experimenting with these Basic Stamp
boards to go off the wall and incorporate diffferent ideas? If this
is possible, my course of action would be to get rid of the little 8
pin 24LC168 EPROM and use the 27C128 28 pin DIP EPROM instead. I
would need to somehow first incorporate this 27C128 chip into the
Basic Stamp OEM 2 board, save my original Basic program as a binary
file, and then use my "Superpro-Z" EPROM burner to write this binary
code to the proper location in my 27C128 chip, and hopefully
everything will work fine. I also don't know how to convert, or save
my original Basic code to either a HEX or binary file. I guess if I
could save my original Basic program to a HEX file, I could use one
of my HEX to Binary convertor programs. Anyone have any experience in
doing what I want to do here?

Thanks,

Ted

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2004-03-30 12:33
    You can't move your code outside the onboard EEPROM. Why? Because the
    core interpreter expects the program tokens to be available in the
    serial EE; it doesn't know how to look elsewhere.

    -- Jon Williams
    -- Applications Engineer, Parallax
    -- Dallas Office


    Original Message
    From: Ted Ham [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=yM8b8qL224WdqoqtiNt2xZWETmJ7EVZ0tsyVw4Q6VIF0rFAS0jCmXZaOJa5F5azAbY3go3gSqyDKow]tedhamii@h...[/url
    Sent: Monday, March 29, 2004 10:50 PM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] Interfacing A Standard EPROM


    Hello. yes, yes, I am new to this group, since I just got by Parallax
    Basic Stamp 2 OEM Board, 4x20 parallell LCD, keypad, keypad decoder
    and some other goodies. I am so very much interested in getting
    uderway in programming my Basic stamp. My question is this..Is there
    a way to use, say, a standard 27C128 28-Pin DIP EPROM chip to hold my
    Basic code instead of using the on board 8 pin DIP 24LC168 EPROM that
    comes on the Basic Stamp 2 OEM board? I have a "Superpro-Z" EPROM
    programmer that I would use to program my Basic code into this 27C128
    chip. I know it might sound silly, to be using a large (Overkill) 28
    pin DIP (27C128) EPROM chip to hold my code rather than just using
    the standard, on-board tiny 8 pin dip 24LC168 EPROM, but isn't the
    whole idea of playing with and experimenting with these Basic Stamp
    boards to go off the wall and incorporate diffferent ideas? If this
    is possible, my course of action would be to get rid of the little 8
    pin 24LC168 EPROM and use the 27C128 28 pin DIP EPROM instead. I
    would need to somehow first incorporate this 27C128 chip into the
    Basic Stamp OEM 2 board, save my original Basic program as a binary
    file, and then use my "Superpro-Z" EPROM burner to write this binary
    code to the proper location in my 27C128 chip, and hopefully
    everything will work fine. I also don't know how to convert, or save
    my original Basic code to either a HEX or binary file. I guess if I
    could save my original Basic program to a HEX file, I could use one
    of my HEX to Binary convertor programs. Anyone have any experience in
    doing what I want to do here?

    Thanks,

    Ted
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