diff options
| author | Frederick Yin <fkfd@fkfd.me> | 2022-08-16 11:54:23 +0800 |
|---|---|---|
| committer | Frederick Yin <fkfd@fkfd.me> | 2022-08-16 11:54:23 +0800 |
| commit | 9542deeb483a00b6fabed7574720926ce97d7511 (patch) | |
| tree | 0f2c1f72c03dd4693fd59df67544d2a4dddc5494 /projects/04/mult | |
| parent | 9c0cb1d1c32724fc95ac9548e4f8d873d3adaccc (diff) | |
Projects, 01-06 completed
Diffstat (limited to 'projects/04/mult')
| -rw-r--r-- | projects/04/mult/Mult.asm | 53 | ||||
| -rw-r--r-- | projects/04/mult/Mult.cmp | 7 | ||||
| -rw-r--r-- | projects/04/mult/Mult.out | 7 | ||||
| -rw-r--r-- | projects/04/mult/Mult.tst | 74 |
4 files changed, 141 insertions, 0 deletions
diff --git a/projects/04/mult/Mult.asm b/projects/04/mult/Mult.asm new file mode 100644 index 0000000..f84ce79 --- /dev/null +++ b/projects/04/mult/Mult.asm @@ -0,0 +1,53 @@ +// 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/04/Mult.asm
+
+// Multiplies R0 and R1 and stores the result in R2.
+// (R0, R1, R2 refer to RAM[0], RAM[1], and RAM[2], respectively.)
+//
+// This program only needs to handle arguments that satisfy
+// R0 >= 0, R1 >= 0, and R0*R1 < 32768.
+
+// Put your code here.
+@acc
+M=0 // acc = 0
+
+@R0
+D=M
+@a
+M=D // a = RAM[0]
+@WRITE
+D;JEQ // if (a == 0) goto WRITE
+
+@R1
+D=M
+@b
+M=D // b = RAM[1]
+@WRITE
+D;JEQ // if (b == 0) goto WRITE
+
+(LOOP)
+ @b
+ D=M
+ @acc
+ M=M+D // acc += b
+ @a
+ M=M-1 // a--
+ D=M
+ @WRITE
+ D;JEQ // if (a == 0) goto WRITE
+ @LOOP
+ 0;JMP // goto LOOP
+
+(WRITE)
+ @acc
+ D=M
+ @R2
+ M=D // RAM[2] = acc
+ @END
+ 0;JMP // goto END
+
+(END)
+ @END
+ 0;JMP
diff --git a/projects/04/mult/Mult.cmp b/projects/04/mult/Mult.cmp new file mode 100644 index 0000000..296b5fb --- /dev/null +++ b/projects/04/mult/Mult.cmp @@ -0,0 +1,7 @@ +| RAM[0] | RAM[1] | RAM[2] |
+| 0 | 0 | 0 |
+| 1 | 0 | 0 |
+| 0 | 2 | 0 |
+| 3 | 1 | 3 |
+| 2 | 4 | 8 |
+| 6 | 7 | 42 |
\ No newline at end of file diff --git a/projects/04/mult/Mult.out b/projects/04/mult/Mult.out new file mode 100644 index 0000000..e31b5df --- /dev/null +++ b/projects/04/mult/Mult.out @@ -0,0 +1,7 @@ +| RAM[0] | RAM[1] | RAM[2] | +| 0 | 0 | 0 | +| 1 | 0 | 0 | +| 0 | 2 | 0 | +| 3 | 1 | 3 | +| 2 | 4 | 8 | +| 6 | 7 | 42 | diff --git a/projects/04/mult/Mult.tst b/projects/04/mult/Mult.tst new file mode 100644 index 0000000..9bf4fa8 --- /dev/null +++ b/projects/04/mult/Mult.tst @@ -0,0 +1,74 @@ +// 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/04/mult/Mult.tst
+
+load Mult.asm,
+output-file Mult.out,
+compare-to Mult.cmp,
+output-list RAM[0]%D2.6.2 RAM[1]%D2.6.2 RAM[2]%D2.6.2;
+
+set RAM[0] 0, // Set test arguments
+set RAM[1] 0,
+set RAM[2] -1; // Test that program initialized product to 0
+repeat 20 {
+ ticktock;
+}
+set RAM[0] 0, // Restore arguments in case program used them as loop counter
+set RAM[1] 0,
+output;
+
+set PC 0,
+set RAM[0] 1, // Set test arguments
+set RAM[1] 0,
+set RAM[2] -1; // Ensure that program initialized product to 0
+repeat 50 {
+ ticktock;
+}
+set RAM[0] 1, // Restore arguments in case program used them as loop counter
+set RAM[1] 0,
+output;
+
+set PC 0,
+set RAM[0] 0, // Set test arguments
+set RAM[1] 2,
+set RAM[2] -1; // Ensure that program initialized product to 0
+repeat 80 {
+ ticktock;
+}
+set RAM[0] 0, // Restore arguments in case program used them as loop counter
+set RAM[1] 2,
+output;
+
+set PC 0,
+set RAM[0] 3, // Set test arguments
+set RAM[1] 1,
+set RAM[2] -1; // Ensure that program initialized product to 0
+repeat 120 {
+ ticktock;
+}
+set RAM[0] 3, // Restore arguments in case program used them as loop counter
+set RAM[1] 1,
+output;
+
+set PC 0,
+set RAM[0] 2, // Set test arguments
+set RAM[1] 4,
+set RAM[2] -1; // Ensure that program initialized product to 0
+repeat 150 {
+ ticktock;
+}
+set RAM[0] 2, // Restore arguments in case program used them as loop counter
+set RAM[1] 4,
+output;
+
+set PC 0,
+set RAM[0] 6, // Set test arguments
+set RAM[1] 7,
+set RAM[2] -1; // Ensure that program initialized product to 0
+repeat 210 {
+ ticktock;
+}
+set RAM[0] 6, // Restore arguments in case program used them as loop counter
+set RAM[1] 7,
+output;
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