PPC WRW+WR+reader+lwsync+sync "Rfe LwSyncdRW Wse SyncdWR Fre" Cycle=Rfe LwSyncdRW Wse SyncdWR Fre { 0:r2=x; 1:r2=x; 1:r4=y; 2:r2=y; 2:r4=x; 3:r2=y; } P0 | P1 | P2 | P3 ; li r1,1 | lwz r1,0(r2) | li r1,2 | lwz r1,0(r2) ; stw r1,0(r2) | lwsync | stw r1,0(r2) | ; | li r3,1 | sync | ; | stw r3,0(r4) | lwz r3,0(r4) | ; Observed 1:r1=1; 2:r3=0; 3:r1=0; y=2; and 1:r1=1; 2:r3=0; 3:r1=1; y=2; and 1:r1=1; 2:r3=0; 3:r1=2; y=2;