Subject:
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Re: Handyboard with EPROM
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 21 Aug 1997 17:49:47 GMT
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Original-From:
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Chuck McManis <cmcmanis@freegate.%AvoidSpam%net>
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Reply-To:
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cmcmanis@freegate.STOPSPAMMERSnet
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Viewed:
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1215 times
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Yes, there is a pin compatible EPROMs and EEPROMs for the Handyboard's
RAM chip. However, without the RAM chip the board is limited to the 256
bytes (or 512 bytes in some versions) of on-chip RAM which can be pretty
limiting.
Another option is to create a daughterboard that plugs into the RAM
socket
that contains four 8K sockets, that you can populate with RAM or EPROM.
Or you could get the 68HC711E9 which has 12K of EPROM on chip, and
then use the RAM as RAM.
In all three cases you will no longer be able to use IC as it assumes
there
is a 32K chunk of RAM at $8000 - $ffff.
--Chuck
German Gentile wrote:
> Can I put a Rom memory in the handy board? I don't need a battery , so
> i
> think to remove that and the battery. If is not posible...can add a
> ROM in
> a expansion board and download the code in the boot ? Thanks...
>
> German Pablo Gentile
> German Pablo Gentile
> Systems Engineer. Electronics Expert. (really??? ;>) )
>
> ggentile@cvtci.com.ar
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Message is in Reply To:
 | | Handyboard with EPROM
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| Can I put a Rom memory in the handy board? I don't need a battery , so i think to remove that and the battery. If is not posible...can add a ROM in a expansion board and download the code in the boot ? Thanks... German Pablo Gentile German Pablo (...) (27 years ago, 20-Aug-97, to lugnet.robotics.handyboard)
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