Tesi Robotica Un co-processore per Stereo-Matching: Architettura | Page 97

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“LP_Tesi” — 2011/9/9 — 21:20 — page 97 — #97

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4.8. MODULO LOADER

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Alg:4.33). Il valore letto viene messo all’interno della FIFO fin che poi andrà in
ingresso al modulo Top.
Algoritmo 4.32 Loader: rule setUp+writeOnMemory
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rule setUp (storeRam && cnt);
String dumpFile ="";

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if(init==0) dumpFile = pathLeft;
if(init==1) dumpFile = pathRight;

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File lfh <- $fopen( dumpFile, "r" );
if ( lfh == InvalidFile ) begin
$display("cannot open %s", dumpFile);
$finish(0);
end

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fh <= lfh ;
cnt<=False;
endrule: setUp

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rule writeOnMemory (storeRam==True && !cnt);
int ir <- $fgetc(fh);
int ig <- $fgetc(fh);
int ib <- $fgetc(fh);

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if ( ir!=-1 && ig!=-1 && ib!=-1 && addrWrite<=fromInteger((
width*height)-1)) begin
Bit#(8) r = truncate( pack(ir) );
Bit#(8) g = truncate( pack(ig) );
Bit#(8) b = truncate( pack(ib) );
ram.a.put(True, addrWrite, Pixel{red:r,green:g,blue:b});
addrWrite <= addrWrite + 1;
readyToRead<=True;
end
else begin
$fclose(fh);
storeRam<=False;
end
endrule: writeOnMemory

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