AVR-Chat

Dennis Clark schrieb:
> Can you buy it anywhere?  It sure sounds nice.  I like the fact that it 
> is using the FTDI chip, and the parallel one so that it doesn't have the 
> serial port limitations on speed.  BUT, are there drivers for it for the 
> Macintosh that allows me to use it with AVRdude there?
> 
> DLC

I know it's not nice to start with an OT-thread but this bugs me right 
now: My FT2232C in FIFO mode allows sending with around 4µs cycle time 
for one byte (burst, unoptimized code on an ATmega128@16MHz in busy loop 
being the limiting factor), which would be around 2MBit/s - sounds 
reasonable.
But it seems to take some time off every now and then to do USB 
transfers - a quick benchmark against a PC receiving showed something 
around 40-50kbyte/s aka 0,4Mbit/s throughput on average!?

So when you say "it doesn't have the serial port limitations on speed" - 
  what *realistic* throughput has anyone seen on a 245BM/FT232C in FIFO 
mode yet? The data sheet says "up to 1Mbyte/s" IIRC.

Philipp