46 lines
2.0 KiB
Plaintext
46 lines
2.0 KiB
Plaintext
// This file is part of www.nand2tetris.org
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// and the book "The Elements of Computing Systems"
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// by Nisan and Schocken, MIT Press.
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// File name: projects/03/a/RAM64.hdl
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/**
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* Memory of 64 registers, each 16 bit-wide. Out holds the value
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* stored at the memory location specified by address. If load==1, then
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* the in value is loaded into the memory location specified by address
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* (the loaded value will be emitted to out from the next time step onward).
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*/
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CHIP RAM64 {
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IN in[16], load, address[6];
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OUT out[16];
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PARTS:
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// Put your code here:
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DMux8Way(in=load, sel=address[3..5], a=toRAM8A,
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b=toRAM8B,
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c=toRAM8C,
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d=toRAM8D,
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e=toRAM8E,
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f=toRAM8F,
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g=toRAM8G,
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h=toRAM8H);
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RAM8(in=in, load=toRAM8A, address=address[0..2], out=fromRAM8A);
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RAM8(in=in, load=toRAM8B, address=address[0..2], out=fromRAM8B);
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RAM8(in=in, load=toRAM8C, address=address[0..2], out=fromRAM8C);
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RAM8(in=in, load=toRAM8D, address=address[0..2], out=fromRAM8D);
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RAM8(in=in, load=toRAM8E, address=address[0..2], out=fromRAM8E);
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RAM8(in=in, load=toRAM8F, address=address[0..2], out=fromRAM8F);
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RAM8(in=in, load=toRAM8G, address=address[0..2], out=fromRAM8G);
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RAM8(in=in, load=toRAM8H, address=address[0..2], out=fromRAM8H);
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Mux8Way16(sel=address[3..5], out=out, a=fromRAM8A,
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b=fromRAM8B,
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c=fromRAM8C,
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d=fromRAM8D,
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e=fromRAM8E,
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f=fromRAM8F,
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g=fromRAM8G,
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h=fromRAM8H);
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}
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