fixed a heisenbug and reset openos

src/machine.lua

@@ -7,7 +7,7 @@
 os.exit = nil
 os.execute = nil
 
-local sysyieldobj = {}
+local sysyieldobj = "__SYSYIELD__"
 local coroutine = coroutine
 
 local function sysyield()
@@ -88,7 +88,7 @@ function component.invoke(address, method, ...)
 	else
 		-- must sync
 		syncedMethodStats = {address, method, ...}
-		coroutine.yield()
+		sysyield()
 		local rets = syncedMethodStats
 		syncedMethodStats = nil
 		return table.unpack(rets)

src/main.c

@@ -484,7 +484,7 @@ int main(int argc, char **argv) {
 	nn_mountComponent(c, eepromCard, 0, false);
 	nn_mountComponent(c, managedfs, 1, false);
 	nn_mountComponent(c, gpuCard, 2, false);
-	nn_mountComponent(c, testingfs, 3, false);
+	//nn_mountComponent(c, testingfs, 3, false);
 	nn_mountComponent(c, testDrive, 4, false);
 	nn_mountComponent(c, testFlash, 5, false);
 	while(true) {