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4hv.org :: Forums :: General Science and Electronics
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Modify pendrive to directly write xD/flash?

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Conundrum
Wed Aug 08 2012, 08:08AM Print
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Hi all.
Just wondering, has anyone managed to pull this off?
The off the shelf xD readers don't let you low level write the chips, some sectors
(ie the ones used to identify the chip and store all the settings) can't be written.

My plan is to make a carrier board which can be interfaced to a pendrive and takes
up to 8 flash chips with a ZIF connector made from the same material watches use for
the LCD contact.

Any ideas?
-A
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Erlend^SE
Wed Aug 08 2012, 12:31PM
Erlend^SE Registered Member #1565 Joined: Wed Jun 25 2008, 09:08PM
Location: Norway
Posts: 159
Well, the idea may be neat, but how do you know the USB controller won't use "internal information blocks"(flash size, other details...) too?

Most likely you would have to do it raw using some microcontroller.
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Conundrum
Thu Nov 13 2014, 09:15AM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Hi, I actually discovered that if you use a totally "blank" ie zerofilled chip it does work with cheap xD readers from Guernsey Photographics.
As these are about £4 it provides a very reliable source and they were fascinated by my project smile
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