Hi,

In some 8051 derivatives it is possible for the code to cause an interrupt by writing 1 to the interrupt flag. Does anyone know if this is possible in the Philips P89C51RC2? ( I know some people here use this family of devices) In particular, would setting CF cause a PCA interrupt? What about leaving CF alone and setting one of the CCFn flags thus allowing the ISR to read CCON to see which bit caused the interrupt?

TIA

Paul