NVReadSeq
u8 NVReadSeq(struct nvidia_par *par, u8 index);
tmp = NVReadSeq(par, 0x01);
tmp = NVReadSeq(par, 0x01);
state->seq[i] = NVReadSeq(par, i);
tmp = NVReadSeq(par, 0x01) & ~0x20; /* screen on/off */