annotate modules/bluespec/Pygar/lab4/BRegFile.bsv @ 48:a139cc07b773
pygar svn.49
[svn r49] moved memory into core
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punk |
| date |
Wed, 05 May 2010 13:42:07 -0400 |
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74716e9a81cc |
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1 import RegFile::*;
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2 import RWire::*;
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3 import ProcTypes::*;
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4
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5 //-----------------------------------------------------------
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6 // Register file module
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7 //-----------------------------------------------------------
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8
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9 interface BRegFile #(type index_t, type data_t);
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10 method Action upd(index_t addr, data_t data);
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11 method data_t sub(index_t addr);
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12 endinterface
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13
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14 module mkBRegFile(RegFile#(index_t, data_t))
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15 provisos (Bits#(index_t, size_index),
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16 Bits#(data_t, size_data),
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17 Eq#(index_t),
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18 Bounded#(index_t) );
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19
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20 RegFile#(index_t, data_t) rf <- mkRegFileWCF(minBound, maxBound);
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21 RWire#(Tuple2#(index_t, data_t)) rw <-mkRWire();
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22
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23 method Action upd (index_t r, data_t d);
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24 rf.upd(r,d);
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25 rw.wset(tuple2(r,d));
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26 endmethod
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27
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28 method data_t sub (index_t r);
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29 case (rw.wget()) matches
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30 tagged Valid {.wr, .d} :
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31 return (wr == r) ? d : rf.sub(r);
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32 tagged Invalid : return rf.sub(r);
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33 endcase
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34 endmethod
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35
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36 endmodule
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