Date   : Tue, 23 Nov 2010 19:44:37 +1100
From   : plexer@... (James McGill)
Subject: Harddisc fakery using a microcontroller

I highly recommend the AVR series for embedded 8 bit work. They are
much easier to work with than PICs. www.sparkfun.com sell a reasonably
cheap programmer too.

For a mock-HDD however I'd consider the ARM Cortex-M3 based STM32.
This thing is a beast - a huge number of IO ports, hardware support
for USB, and on some models SDIO for high(ish) speed access to an SD
card, 96 MIPS (clocked at 72MHz). www.futurlec.com sell a development
board and www.sparkfun.com sell a programmer. I use this on a few of
my boards and love it.

I'm not convinced that a AVR would be fast enough.

Regards,
James

On Tue, Nov 23, 2010 at 5:00 PM, Phill Harvey-Smith
<afra@...> wrote:
> On 23/11/2010 04:14, Bob Devries wrote:
>> Rick,
>>
>> according to specs here:
>> http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010304
>>
>> The 18F4620 has 64KB program memory, 3968 bytes RAM and 1024 bytes EEPROM
>
> You might be better off with one of these :
>
> http://atmel.com/dyn/resources/prod_documents/doc8272.pdf
>
> AVR Atmega 1284, 128K of flash and 16K of ram, also available in DIP,
> and it should also be noted that the PIC's devide their clock by 4 so a
> 40MHz PIC really only runs at 10MHz, however a 20MHz AVR runs at
> 20MHz..... The AVR I believe also has an easier to cope with memory
> achitecture, however some of the PICs do have the asvantage of an
> onboard latch.
>
> Or you could use a 5V tollerent ARM.......
>
> Cheers.
>
> Phill.
>
>
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