P2_0=1 P2_1=1 P2_2=1 P2_3=1 TMOD=0x10; TL1=0x78; TH1=0xEC; EA=1; ET1=1; TR1=1; while(1); }
void T1_INT() interrupt 3 {
TL1=0x78; TH1=0xEC; i++; switch(i) {
case 1: P2_3=1;P2_0=0;P0=0x92;break; case 2:P2_0=1;P2_1=0;P0=0x82;break; case 3:P2_1=1;P2_2=0;P0=0xF8;break; case 4:P2_2=1;P2_3=0;P0=0x80;i=0;break; default: i=0; } }