[Coco] Arduino question

Phill Harvey-Smith afra at aurigae.demon.co.uk
Mon Oct 10 12:19:37 EDT 2011

On 10/10/2011 16:13, Mark Marlette wrote:
> Frank,
> Really depends on what you want to do.
> The STK500 is VERY reasonable. Look at all the target chips it
> supports.

I have one though I have only really used it a couple of times, decent 
enough dev board, but I found that it was much easier to make a 
prototype of whatever I was trying to build than try to shoehorn a dev 
board to connect to (for example) a CoCo/Dragon etc.

> Your link below to the mega1284, that is a HUGE chip, maybe you have
> a specific need for all of those features in that chip???

Or the fact that it has 16K of ram internally, quite usefull for disk 
buffers etc....

> BTW: The Atmel AVR would be a terrible approach to replace the
> SuperIDE. Seriously.  Altera, better solution.

Agreed for IDE a CPLD/FPGA is the better solution.

But if you wanted to build an SD/MMC interface it works fine as most of 
the AVRs have built in SPI to communicate with the SD, and can run 
something like chan FATFS so that the SD card can be FAT formatted. 
Loading a .cas file in 4 seconds as opposed to 4 minutes is pretty cool :)

Though to be fair I do have a XILINX 9572 acting as a databuffer, 
address decoder / bus manager between the 6809 and the AVR.



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