Test PPO004

Run PPO004 in model, using ppcmem

PPC PPO004
"LwSyncdWW Rfe DpCtrlIsyncdR PosRR DpAddrdR Fre"
Cycle=Rfe DpCtrlIsyncdR PosRR DpAddrdR Fre LwSyncdWW
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=z; 1:r8=x;
}
 P0           | P1            ;
 li r1,1      | lwz r1,0(r2)  ;
 stw r1,0(r2) | cmpw r1,r1    ;
 lwsync       | beq  LC00     ;
 li r3,1      | LC00:         ;
 stw r3,0(r4) | isync         ;
              | lwz r3,0(r4)  ;
              | lwz r5,0(r4)  ;
              | xor r6,r5,r5  ;
              | lwzx r7,r6,r8 ;
exists
(1:r1=1 /\ 1:r7=0)