A_TP_PACE_TABLE
t3_write_reg(adap, A_TP_PACE_TABLE, 0xffff0000 + i);
pace_vals[i] = t3_read_reg(adap, A_TP_PACE_TABLE) * tick_ns;
t3_write_reg(adap, A_TP_PACE_TABLE, (start << 16) |
t4_write_reg(adap, A_TP_PACE_TABLE, 0xffff0000 + i);
v = t4_read_reg(adap, A_TP_PACE_TABLE);
t4_write_reg(adap, A_TP_PACE_TABLE, (start << 16) | vals[i]);