>> I am now trying Olimex LPC-P2148 USB board (US$75)
>> using the open
>> source gnuarm tools and the open source usb stack
>> from lpcusb
>> (http://sourceforge. net/projects/ lpcusb). This
>> works under both
>> Linux and Windows.
>> 
>   Sounds like a PIC to me. No diff. 

- free (GNU) tools, including C, C++, Pascal, Java, maybe even Ada
- JTAG debugger (capabilities compareable to an ICD2 but with much
cheaper hardware, but that simple hardware does require a parallel port)
- 

> How is the timing for ARM chips?
> Predictable like PIC or Atmel?

Not as easy, but still calculateable. And ARM is 1:1, so a 60 MHz ARM is
60 MIPS. That is: 32-bit MIPS. Adding two 64-bit values (caveat: in
registers) takes 2 instructions. Try that with a (smaller) PIC or an
AVR.

Note: "or Atmel" is not a good term in this context. Atmel makes/sells
ARM chips that are compareable to the Philips chips.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

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