Make memory sizes parameters

vm/state.go

@@ -2,8 +2,6 @@ package vm
 
 import "fmt"
 
-const GlobalMemorySize = 16
-
 type State struct {
 	running bool
 	err     error
@@ -20,7 +18,7 @@ type State struct {
 func NewState(prog *Program) (*State, error) {
 	return &State{
 		program:      prog,
-		globalMemory: NewMemory(GlobalMemorySize),
+		globalMemory: NewMemory(prog.GlobalMemorySize),
 	}, nil
 }