The former ``Control Register 1'' on the branch parameters panel is now used as a readout mask for the PowerPCs in Crate 3. Note that their numbering starts at 1. Hence
| 0000'0002 : | only PPC 1 selected |
| 0000'01FE : | PPC 1 thru 8 selected |
The old OnSiRoC raw data masks are still valid, but every bit corresponds now to one PPC (twice the data size). For the selected PPCs, the Taxi reads directly from the Raw data buffers. To avoid conflicts with having a SIFE bank containing ``mixed'' data (formatted and raw) the use of this mask is strongly dicouraged. Take rather dedicated runs for specific RIO boards.