Robert Hedan wrote:
> Have you considered using 24C128, 256, 512 or 1024 for your smartcards?
Yep, but they're not as sexy as PIC16F877-based SilverCards with the
standard credit/ATM card form-factor
> You can I2C them onto your pic
Yep, played with that somewhat a while ago. I2C is a tad slow, but it
does work.
> I might dedicate a slave PIC 18Fxxxx to drive an SD card too.
That's a smart approach - run the CF-driving PIC as an I2C slave talking
to the master PIC. And, CF cards are smaller and store heaps more than
the 24Cxxx I2C ROMs inside the smartcards.
> The nice feature with the 18F is that it can support FAT16 (and FAT32 I
> think), so that your SD cards can be browsed/editted from within Windoze.
That's just too cool!
Have you got a link (or links) for that?
What's the physical connection between PIC and PC?
How big is the FATxx driver code on the PIC18F?
> A mini disquette with the advantage of high speed and flexible
> storage size (from 64M to 8G now I think, check specs).
Yikes - that'll store the milling schedules for heaps of cards!
Anyway, don't get me started - my wife may not appreciate it if I'm up
late at nights reimplementing the CNC controller around an ARM thumb
chip and porting Linux onto it, and driving the CNC via WLAN :P
--
Cheers
David