Mercurial > pygar
annotate core/src/BRegFile.bsv @ 44:9b0dfce52c29 pygar svn.45
[svn r45] adding mixer
| author | punk |
|---|---|
| date | Wed, 05 May 2010 12:30:18 -0400 |
| parents | 91a1f76ddd62 |
| children |
| rev | line source |
|---|---|
| punk@1 | 1 import RegFile::*; |
| punk@1 | 2 import RWire::*; |
| punk@1 | 3 import ProcTypes::*; |
| punk@1 | 4 |
| punk@1 | 5 //----------------------------------------------------------- |
| punk@1 | 6 // Register file module |
| punk@1 | 7 //----------------------------------------------------------- |
| punk@1 | 8 |
| punk@1 | 9 interface BRegFile #(type index_t, type data_t); |
| punk@1 | 10 method Action upd(index_t addr, data_t data); |
| punk@1 | 11 method data_t sub(index_t addr); |
| punk@1 | 12 endinterface |
| punk@1 | 13 |
| punk@1 | 14 module mkBRegFile(RegFile#(index_t, data_t)) |
| punk@1 | 15 provisos (Bits#(index_t, size_index), |
| punk@1 | 16 Bits#(data_t, size_data), |
| punk@1 | 17 Eq#(index_t), |
| punk@1 | 18 Bounded#(index_t) ); |
| punk@1 | 19 |
| punk@1 | 20 RegFile#(index_t, data_t) rf <- mkRegFileWCF(minBound, maxBound); |
| punk@1 | 21 RWire#(Tuple2#(index_t, data_t)) rw <-mkRWire(); |
| punk@1 | 22 |
| punk@1 | 23 method Action upd (index_t r, data_t d); |
| punk@1 | 24 rf.upd(r,d); |
| punk@1 | 25 rw.wset(tuple2(r,d)); |
| punk@1 | 26 endmethod |
| punk@1 | 27 |
| punk@1 | 28 method data_t sub (index_t r); |
| punk@1 | 29 case (rw.wget()) matches |
| punk@1 | 30 tagged Valid {.wr, .d} : |
| punk@1 | 31 return (wr == r) ? d : rf.sub(r); |
| punk@1 | 32 tagged Invalid : return rf.sub(r); |
| punk@1 | 33 endcase |
| punk@1 | 34 endmethod |
| punk@1 | 35 |
| punk@1 | 36 endmodule |