[NTLK] PCMCIA for the brave...
m.melcher at robowerk.de
Mon Feb 15 07:11:31 PST 2021
On 2/15/2021 11:07 AM, Sylvain Pilet wrote:
>> [Settings > PC Cards > [+] > Create Image from Snapshot…]
> Ok I understand. It works perfectly with all memory cards, but it doesn't work with "software" type cards like Fodor, Fortune500, and other ColomboMystery...
Yes, that is true. I mentioned in an earlier mail, that ROM cards do not
work. I have no clue yet, why.
> It might be necessary to indicate that you should choose in order:
> - first the file containing the image from the memory card
> - and secondly the .CIS file (containing the identification of this memory card).
> And that this will create another .pccard file.
Yes, it says so in the top line of the file choosers. It's bad practice
to have a list of four popup dialogs, but for a beta version, it was
less work. The next version will have a much more obvious dialog box
that will give details about the CIS.
>> So, yes, with my current knowledge (and implementation) I can safely write 2MB Intel Flash cards, but none else ;-)
> So it's the same with Hammer, you can't write anything else than 2Mb cards?
> We agree that we write only from 98000000, and especially not from 90000000-90001000 which contains only the information of the card, or also from its "catalog" ?
No, worse. Just writing to a Flash address does nothing. You have to
write specific command in a given order to set a chunk of memory cells
(bits) to all 1's. Followed by another command sequence to enable
writing, followed by a fixed number of bits, but only 0s are actaully
written (you can never write an individual 1). All that has to follow
some timing conditions to truly work.
If all that is really essential to a bunch of users, it may be possible
to write a Newton App that does these things, but there should be easier
ways to write Flash cards.
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