25 lines
654 B
Plaintext
25 lines
654 B
Plaintext
// This file is part of the materials accompanying the book
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// "The Elements of Computing Systems" by Nisan and Schocken,
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// MIT Press. Book site: www.idc.ac.il/tecs
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// File name: tools/builtIn/DRegister.hdl
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/**
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* A 16-Bit register called "D Register".
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* If load[t-1]=1 then out[t] = in[t-1]
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* else out does not change (out[t] = out[t-1])
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*
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* This built-in chip implementation has the side effect of
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* providing a GUI representation of a 16-bit register
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* called "D register" (typically used to store data).
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*/
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CHIP DRegister {
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IN in[16], load;
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OUT out[16];
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BUILTIN DRegister;
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CLOCKED in, load;
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}
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