diff options
author | Yuchen Pei <me@ypei.me> | 2018-01-20 15:41:49 +0100 |
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committer | Yuchen Pei <me@ypei.me> | 2018-01-20 15:41:49 +0100 |
commit | d3a0cc3a8ba6dfeb64d3faeffdeb6845b60e5840 (patch) | |
tree | d58df9ec2480e2a9ec6240f9c797f83d1a0b1056 /chips/RAM512.hdl | |
parent | 3571f998b28fbc8d9250ba04c983935f10a16c15 (diff) |
rearranged the dir for github
- removed tools and pdfs
- rearranged the projects dirs
- added md files
- other minor changes
Diffstat (limited to 'chips/RAM512.hdl')
-rw-r--r-- | chips/RAM512.hdl | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/chips/RAM512.hdl b/chips/RAM512.hdl new file mode 100644 index 0000000..55f6ea0 --- /dev/null +++ b/chips/RAM512.hdl @@ -0,0 +1,29 @@ +// This file is part of the materials accompanying the book
+// "The Elements of Computing Systems" by Nisan and Schocken,
+// MIT Press. Book site: www.idc.ac.il/tecs
+// File name: projects/03/b/RAM512.hdl
+
+/**
+ * Memory of 512 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 RAM512 {
+ IN in[16], load, address[9];
+ OUT out[16];
+
+ PARTS:
+ // Put your code here:
+ DMux8Way (in=load, sel=address[0..2], a=load0, b=load1, c=load2, d=load3, e=load4, f=load5, g=load6, h=load7);
+ RAM64 (in=in, load=load0, address=address[3..8], out=out0);
+ RAM64 (in=in, load=load1, address=address[3..8], out=out1);
+ RAM64 (in=in, load=load2, address=address[3..8], out=out2);
+ RAM64 (in=in, load=load3, address=address[3..8], out=out3);
+ RAM64 (in=in, load=load4, address=address[3..8], out=out4);
+ RAM64 (in=in, load=load5, address=address[3..8], out=out5);
+ RAM64 (in=in, load=load6, address=address[3..8], out=out6);
+ RAM64 (in=in, load=load7, address=address[3..8], out=out7);
+ Mux8Way16 (a=out0, b=out1, c=out2, d=out3, e=out4, f=out5, g=out6, h=out7, sel=address[0..2], out=out);
+}
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