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RAM4K.hdl
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RAM4K.hdl
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/**
* Memory has 4096 registers, each 16 bits wide.
* If load==1, in value is loaded to address.
* The value at address will be output to out.
*/
CHIP RAM4K {
IN in[16], load, address[12];
OUT out[16];
PARTS:
DMux8Way(in=load, sel=address[9..11],
a=dmuxOut0, b=dmuxOut1, c=dmuxOut2, d=dmuxOut3,
e=dmuxOut4, f=dmuxOut5, g=dmuxOut6, h=dmuxOut7);
RAM512(in=in, load=dmuxOut0, address=address[0..8], out=ramOut0);
RAM512(in=in, load=dmuxOut1, address=address[0..8], out=ramOut1);
RAM512(in=in, load=dmuxOut2, address=address[0..8], out=ramOut2);
RAM512(in=in, load=dmuxOut3, address=address[0..8], out=ramOut3);
RAM512(in=in, load=dmuxOut4, address=address[0..8], out=ramOut4);
RAM512(in=in, load=dmuxOut5, address=address[0..8], out=ramOut5);
RAM512(in=in, load=dmuxOut6, address=address[0..8], out=ramOut6);
RAM512(in=in, load=dmuxOut7, address=address[0..8], out=ramOut7);
Mux8Way16(a=ramOut0, b=ramOut1, c=ramOut2, d=ramOut3,
e=ramOut4, f=ramOut5, g=ramOut6, h=ramOut7,
sel=address[9..11], out=out);
}