SiS_SetCH700x(SiS_Pr,0x01,0x28);
/* Set video bandwidth
- High bandwidth Luma composite video filter(S0=1)
- low bandwidth Luma S-video filter (S2-1=00)
+ High bandwith Luma composite video filter(S0=1)
+ low bandwith Luma S-video filter (S2-1=00)
disable peak filter in S-video channel (S3=0)
high bandwidth Chroma Filter (S5-4=11)
=00110001=0x31