R1
#define R1 w1
#define R1 w1
#define R1 w1
#define R1 x1
#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
#define R1 (*buf++ = *sci_dma)
#define R1 (*buf++ = *sci_dma)
#define R1 (*buf++ = *sci_dma)
R1, R2, R3,
#define R1 A0
#define R1 0x002