nand2tetris/projects/03/a/RAM8.hdl

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2021-12-23 14:14:21 +00:00
// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/03/a/RAM8.hdl
/**
* Memory of 8 registers, each 16 bit-wide. Out holds the value
* stored at the memory location specified by address. If load==1, then
* the in value is loaded into the memory location specified by address
* (the loaded value will be emitted to out from the next time step onward).
*/
CHIP RAM8 {
IN in[16], load, address[3];
OUT out[16];
PARTS:
// Put your code here:
DMux8Way(in=load, sel=address, a=toRegisterA,
b=toRegisterB,
c=toRegisterC,
d=toRegisterD,
e=toRegisterE,
f=toRegisterF,
g=toRegisterG,
h=toRegisterH);
Register(in=in, load=toRegisterA, out=fromRegisterA);
Register(in=in, load=toRegisterB, out=fromRegisterB);
Register(in=in, load=toRegisterC, out=fromRegisterC);
Register(in=in, load=toRegisterD, out=fromRegisterD);
Register(in=in, load=toRegisterE, out=fromRegisterE);
Register(in=in, load=toRegisterF, out=fromRegisterF);
Register(in=in, load=toRegisterG, out=fromRegisterG);
Register(in=in, load=toRegisterH, out=fromRegisterH);
Mux8Way16(sel=address, out=out, a=fromRegisterA,
b=fromRegisterB,
c=fromRegisterC,
d=fromRegisterD,
e=fromRegisterE,
f=fromRegisterF,
g=fromRegisterG,
h=fromRegisterH);
}