PINSEL0&=~((1<<27)|(1<<26)); // p0.13
// ctrl databus for p2.18 - p2.24
PINSEL2&=(PINSEL2&(~((1<<5)|(1<<4))))|(1<<4);
+ // ctrl addr bus for p3.20, p3.21
+ PINSEL2=(PINSEL2&(~((1<<27)|(1<<26)|(1<<25))))|(1<<27)|(1<<26);
// input
IODIR0&=~((1<<30)|(1<<28)|(1<<27)|(1<<22)|(1<<13));
IODIR3&=~((1<<21)|(1<<20));