28 	P2 = R2 ;              /* P2 = count   */
29 	R3 = R0 + R2;          /* end          */
30 	CC = R2 <= 7(IU);
33 	R2 =  3;  define
34 	R2 = R0 & R2;          /* addr bottom two bits */  define
35 	CC =  R2 == 0;             /* AZ set if zero.	*/
40 	R2 = R1 <<  8;         /* create quad filler */  define
41 	R2.L = R2.L + R1.L(NS);
42 	R2.H = R2.L + R1.H(NS);
47 	[P0++] = R2;
54 	R2 = R3;                /* end point */  define
56 	R2 = R2 - R3;           /* bytes left */  define
57 	P2 = R2;
74 	R0 = R0 - R2;
80 	CC = R2 <= 2;          /* 2 bytes */