Hai,

The RAM address of

8051 Port 0 is 80h,

If i want to use as

bit addressing, we

need to use as

80h,81h,82h....,87h.

But the SP RAM

address is 81h,
DPL address is 82h,
DPH addressis 83h,

and
PCON is 87h.
I could not

understand, how can i

use this. I am using

RIDE for uC

programming.

for bit addressing i

need to specify the

RAM location,

If i assign like

P0_1=81h, then is it

refelect in SP or

not?

I could not

understand this

logic.

Please help me.

Thanks and Regards,
R.B. Raju