diff options
| author | Yuchen Pei <me@ypei.me> | 2017-11-29 12:30:41 +0100 |
|---|---|---|
| committer | Yuchen Pei <me@ypei.me> | 2017-11-29 12:30:41 +0100 |
| commit | a000308104aab27c2dde9a306f1bc654b2db4806 (patch) | |
| tree | aecc628e14c1628b5714281437aba18680cdc27b /projects/08/FunctionCalls/FibonacciElement/Sys.vm | |
first commit
Diffstat (limited to 'projects/08/FunctionCalls/FibonacciElement/Sys.vm')
| -rw-r--r-- | projects/08/FunctionCalls/FibonacciElement/Sys.vm | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/projects/08/FunctionCalls/FibonacciElement/Sys.vm b/projects/08/FunctionCalls/FibonacciElement/Sys.vm new file mode 100644 index 0000000..f3965c9 --- /dev/null +++ b/projects/08/FunctionCalls/FibonacciElement/Sys.vm @@ -0,0 +1,15 @@ +// 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/08/FunctionCalls/FibonacciElement/Sys.vm
+
+// Pushes a constant, say n, onto the stack, and calls the Main.fibonacii
+// function, which computes the n'th element of the Fibonacci series.
+// Note that by convention, the Sys.init function is called "automatically"
+// by the bootstrap code.
+
+function Sys.init 0
+push constant 4
+call Main.fibonacci 1 // computes the 4'th fibonacci element
+label WHILE
+goto WHILE // loops infinitely
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