Lpc2000

At 10:21 PM 3/17/05 +0000, johnsonnenberg99 wrote:
>I'm seeing slightly different numbers.
>Yesterday I put two lines of code in my C program.
>Line 1 was  IOSET0 = xxxx   to set an IO pin.
>Line 2 wss  IOCLR0 = xxxx   to clear the same pin.,
>This compiled to a total of 8 lines of assemble code using IAR.
>When executed, the IO pin stayed high for 2 uS with a 24MHz clock.
>This implies the 8 instruction took over 48 clock ticks.  I was in
>the THUMB mode, and I'll try it again in the ARM mode.

I believe you are timing I/O speed not instruction speed.  Take a search 
back through the history of the group.  In particular there was some 
discussion on this in the first month or two of the groups existence.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,   be 
they legal, genetic, or physical.  If you don't believe me, try to chew a 
radio signal. "  -- Kelvin Throop, III
http://www.aeolusdevelopment.com/