Why don't you try one of the PlayStation memory cards. They are ranging
from 1MB/15 blocks till several MB's/740 blocks. I want to use it for my
old 8 inch and trs80 with cpm. I think that pricing is interesting because
there is such a big market. My only problem at this time is that i don't
know anything about the chip. I bought a 1MB/15 blocks (i suppose that they
are 16 blocks, but use one for the directory). This card has a 64plcc chip
from Sony type is: CXD8732Q or maybe 5D61 8BML. Looked on the sony site but
couldn't find it, not even at the obsolete parts list. The size of the pcb
is 3.5 cm wide and 4.5cm long and maybe 3 mm thick. So if some one know
where to get info about the chip, or other chips used in these memory
cards, could be interesting for a lot of people on the list.
I' ve seen prices as low as $4 for the 1MB cards. Atmel has an serial 8Mb
5v only serial flash the AT45D081 and a 16Mb serial flash the AT45D161. You
can obtain a pdf at the atmel site. Spi compatible at 15Mhz max clock.
Try http://www.atmel.com/
Leo Timmer
<salsater@dds.nl>



----------
> From: William Chops Westfield <billw@CISCO.COM>
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [OT] Which EEPROM with 12C509?
> Date: Thursday, May 13, 1999 8:18 AM
>
>     Want a recommendation for a serial EEPROM or other non-volatile
memory
>     in the 256k to 4Mb range to which a 12C509 may speak.
>
>     Constraints:
>             - eight pin dip,
>             - 5v supply,
>             - small quantities (10-50).
>
>     For an antique computer, an 80C85 based Tandy 100/102/200 laptop, I
have
>     volunteered to a group of users on the 'net to investigate the
>     construction of a simple device to act as offline storage.
>
> Man, that's scary.  In two chips you can implement more storage than the
> old 5.25 inch floppy drives.  (maybe you can make a commodore 64 or
> atari version as well.  IIRC the floppies for those systems used an
> rs232-like port.)
>
> I don't think you can find serial EEPROM or flash that dense in that
> sized package - the chips themselves get too big, do you get 28 pin TSOP
> style packages with only a few pins connected (they should fit into an
> rs232 clamshell OK, though.)  Check into the atmel "serial dataflash"
> parts.  If you use a crystal on a slightly larger PIC (16C505?), you
> shouldn't need a separate baud rate generator.
>
> BillW