KS_OFMTA
table[KS_OFMTA] = 0x30;
ks0127_and_or(sd, KS_OFMTA, 0xcf, 0x30);
ks0127_and_or(sd, KS_OFMTA, 0xcf, 0x00);
ks0127_write(sd, KS_OFMTA, 0x20); /* tristate */