static UINT32 opSTB(void) // st.b reg2, disp16[reg1]
{
UINT32 tmp=R_OP(PC);
PC+=2;
tmp=D16(tmp);
tmp+=GETREG(GET1);
W_B(tmp,GETREG(GET2)&0xff);
return clkIF+clkMEM;
}
void
init_walsh(){
// memset(m_walsh,0,sizeof(m_walsh));
// memset(m_iwalsh,0,sizeof(m_iwalsh));
memset(w_j,0,sizeof(w_j));
#define W_B(k,i) (((k)&(1<<(i))) ? 1 : 0)
#define W_1(v) ((v)%2==0?1:-1)
for(int k=0;k<N;k++){
//http://fourier.eng.hmc.edu/e161/lectures/wht/node4.html
for(int m=0;m<N;m++){
int j=0;
for(int i=0;i<3;i++){
j+=(W_B(k,i)+W_B(k,i+1))*W_B(m,3-i-1);
}
w_j[k][m]=W_1(j);
}
}
}
