1 files changed, 83 insertions, 0 deletions
diff --git a/tools/OS/Sys.vm b/tools/OS/Sys.vm
new file mode 100644
index 0000000..c186dad
--- /dev/null
+++ b/tools/OS/Sys.vm
@@ -0,0 +1,83 @@
+function Sys.init 0
+call Memory.init 0
+pop temp 0
+call Math.init 0
+pop temp 0
+call Screen.init 0
+pop temp 0
+call Output.init 0
+pop temp 0
+call Keyboard.init 0
+pop temp 0
+call Main.main 0
+pop temp 0
+call Sys.halt 0
+pop temp 0
+push constant 0
+return
+function Sys.halt 0
+label WHILE_EXP0
+push constant 0
+not
+not
+if-goto WHILE_END0
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+return
+function Sys.wait 1
+push argument 0
+push constant 0
+lt
+if-goto IF_TRUE0
+goto IF_FALSE0
+label IF_TRUE0
+push constant 1
+call Sys.error 1
+pop temp 0
+label IF_FALSE0
+label WHILE_EXP0
+push argument 0
+push constant 0
+gt
+not
+if-goto WHILE_END0
+push constant 50
+pop local 0
+label WHILE_EXP1
+push local 0
+push constant 0
+gt
+not
+if-goto WHILE_END1
+push local 0
+push constant 1
+sub
+pop local 0
+goto WHILE_EXP1
+label WHILE_END1
+push argument 0
+push constant 1
+sub
+pop argument 0
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+return
+function Sys.error 0
+push constant 69
+call Output.printChar 1
+pop temp 0
+push constant 82
+call Output.printChar 1
+pop temp 0
+push constant 82
+call Output.printChar 1
+pop temp 0
+push argument 0
+call Output.printInt 1
+pop temp 0
+call Sys.halt 0
+pop temp 0
+push constant 0
+return