| Variable | Description | Stored/Used |
| dsp_rdy | DSP is Busy writing data to Buffer No more Stack Words from DSP FPGA |
|
| Ninp | Number of Active Inputs (Buffers) for this DSP | Buffer Manager |
| Nmain | Size (in words) of Buffer Main Memory | Buffer i Info |
| Novf | Size (in words) of Buffer Overflow Memory | Buffer i Info |
| Nrps | Size (in elements) of Read Pointer Stack | Read Ptr Stack |
| buff_no | Current Buffer No. for write After write: • next(buff_no) = mod(buff_no+1,Ninp) |
Buffer Manager |
| buff_full | Current Buffer is full Condition for this: • w_ptr<(rs_ptr->r_ptr) & next(w_ptr)>(rs_ptr->r_ptr) |
Buffer Manager |
| in_serwd | Stack Word from DSP FPGA | Buffer Manager |
| wrdcnt | Word Count for current buffer Derived from Stack Word |
Buffer Manager |
| mem_start | Addr. for Start of Buffer i Main Mem | Buffer i Info |
| mem_end | Addr. for End of Buffer i Main Mem | Buffer i Info |
| ovf_end | Addr. for End of Buffer i Overflow Mem | Buffer i Info |
| w_ptr | Addr. for next/current write After write: next(w_ptr) = Base + • w_ptr + wrdcnt If w_ptr + wrdcnt <= mem_end • 0 otherwise |
Buffer i Info |
| rs_off | Read Pointer Stack element Offset for next/current read Addr. for evt_done Stack: • Base + rs_off Addr. for r_ptr,wrdcnt Stacks: • Base + 2*rs_off After read, Release the Current Read Stack Element • evt_done=0 • next(rs_off) = mod(rs_off+1,Nrps) |
Buffer i Info |
| evt_done | Flag for All Input Buffers Loaded for this Event | Read Ptr Stack |
| r_ptr[i] | Address for Start of Event Data in Buffer i | Read Ptr Stack |
| wrdcnt[i] | Number of Words to Read from Buffer i | Read Ptr Stack |