As Boyapati, Anitha wrote:

> I am trying to see what factors influenced to go for a 16-bit
> counter in one case and only 8-bit counter in the other. Why not
> 16-bit counter for both?

_delay_loop_2 has a coarser granularity (4 ticks vs. 3 for
_delay_loop_1).

Basically, both these functions were introduced as "convenience
wrappers" for _delay_loop_1 and _delay_loop_2, respectively, to
make it easier for people to calculate the delay timing.
-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

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