1 files changed, 15 insertions, 0 deletions
diff --git a/sim/ucsim/s51.src/test/test_extit.c b/sim/ucsim/s51.src/test/test_extit.c
new file mode 100644
index 0000000..f61fd41
--- /dev/null
+++ b/sim/ucsim/s51.src/test/test_extit.c
@@ -0,0 +1,15 @@
+#include <reg51.h>
+
+sfr at 0xa6 WDTRST;
+
+void jaj() interrupt 0 { P2= P0; P0++; }
+
+void main()
+{
+	IT0=0; /* low level triggered */
+	IT0=1; /* falling edge triggered */
+	EX0=1; /* enable ex #0 */
+	EA=1;
+	P0=0;
+	for(;;);
+}