Hi again,
Example: SBI of bit 0 in PINB register should toggle (xor) PORTB.PB0. Using RMW approach, we read PINB = 0xff (because DDRB is input/tristate, read as '1' for each pin), we OR the bitmask (1<<0)=1 on top of it (=0xff) and write it back to PINB, *which toggles all PORTB bits* --> bug.
PINB register is read only. What you want to achieve? Regards Klaus _______________________________________________ Simulavr-devel mailing list Simulavr-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/simulavr-devel
