diff --git a/ESP32/main.ino b/ESP32/main.ino
index 7df045d..ed6556c 100644
--- a/ESP32/main.ino
+++ b/ESP32/main.ino
@@ -13,149 +13,152 @@ bus *b = new bus();
 cpu *c = new cpu(b);
 tty *tty_ = nullptr;
 
-void loadbin(bus *const b, uint16_t base)
+uint16_t loadbin(bus *const b)
 {
-	constexpr unsigned char ___tester_bin[] = {
-		0x01, 0x00, 0x8a, 0x07, 0x00, 0x02, 0xc6, 0x15, 0x00, 0x02, 0x77, 0x00,
-		0xb6, 0x05, 0xc0, 0x15, 0xcf, 0x03, 0xf7, 0x09, 0xe0, 0x05, 0xc1, 0x15,
-		0x5d, 0x6b, 0x01, 0x8d, 0xa1, 0x00, 0xa2, 0x00, 0xa4, 0x00, 0xa8, 0x00,
-		0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0x00, 0xc2, 0x8b, 0x01, 0x02, 0x87, 0x00,
-		0x80, 0x10, 0xf7, 0x09, 0xde, 0x05, 0xc0, 0x15, 0xa0, 0x03, 0xf7, 0x09,
-		0xb8, 0x05, 0x87, 0x00, 0xa1, 0x00, 0xa2, 0x00, 0xa4, 0x00, 0xa8, 0x00,
-		0x87, 0x00, 0xf7, 0x09, 0xf2, 0xff, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x8b,
-		0x04, 0x03, 0xc2, 0x15, 0x01, 0x00, 0x77, 0x00, 0x2e, 0x01, 0xf7, 0x09,
-		0xde, 0xff, 0xc1, 0x15, 0x80, 0x00, 0xc1, 0x8b, 0x04, 0x02, 0xc2, 0x15,
-		0x02, 0x00, 0x77, 0x00, 0x1a, 0x01, 0xf7, 0x09, 0xca, 0xff, 0xc1, 0x15,
-		0x7f, 0x00, 0x81, 0x8a, 0x04, 0x85, 0xc2, 0x15, 0x03, 0x00, 0x77, 0x00,
-		0x06, 0x01, 0xf7, 0x09, 0xb6, 0xff, 0xc1, 0x15, 0x80, 0xff, 0xc1, 0x8a,
-		0x04, 0x85, 0xc2, 0x15, 0x04, 0x00, 0x77, 0x00, 0xf2, 0x00, 0xf7, 0x09,
-		0xa2, 0xff, 0xc1, 0x15, 0x7f, 0x00, 0x81, 0x8a, 0x04, 0x81, 0xc2, 0x15,
-		0x05, 0x00, 0x77, 0x00, 0xde, 0x00, 0xf7, 0x09, 0x8e, 0xff, 0xc1, 0x15,
-		0x80, 0x00, 0xc1, 0x8a, 0x04, 0x80, 0xc2, 0x15, 0x06, 0x00, 0x77, 0x00,
-		0xca, 0x00, 0xf7, 0x09, 0x7a, 0xff, 0xc1, 0x15, 0x80, 0x00, 0xc1, 0x8c,
-		0x04, 0x87, 0xc2, 0x15, 0x07, 0x00, 0x77, 0x00, 0xb6, 0x00, 0xf7, 0x09,
-		0x66, 0xff, 0xc1, 0x15, 0x40, 0x00, 0xc1, 0x8c, 0x04, 0x86, 0xc2, 0x15,
-		0x08, 0x00, 0x77, 0x00, 0xa2, 0x00, 0xf7, 0x09, 0x52, 0xff, 0xc1, 0x15,
-		0x00, 0x00, 0xc1, 0x0b, 0x04, 0x03, 0xc2, 0x15, 0x09, 0x00, 0x77, 0x00,
-		0x8e, 0x00, 0xf7, 0x09, 0x3e, 0xff, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0b,
-		0x04, 0x02, 0xc2, 0x15, 0x0a, 0x00, 0x77, 0x00, 0x7a, 0x00, 0xf7, 0x09,
-		0x2a, 0xff, 0xc1, 0x15, 0xff, 0x7f, 0x81, 0x0a, 0x04, 0x85, 0xc2, 0x15,
-		0x0b, 0x00, 0x77, 0x00, 0x66, 0x00, 0xf7, 0x09, 0x16, 0xff, 0xc1, 0x15,
-		0x00, 0x80, 0xc1, 0x0a, 0x04, 0x85, 0xc2, 0x15, 0x0c, 0x00, 0x77, 0x00,
-		0x52, 0x00, 0xf7, 0x09, 0x02, 0xff, 0xc1, 0x15, 0xff, 0x7f, 0x81, 0x0a,
-		0x04, 0x81, 0xc2, 0x15, 0x0d, 0x00, 0x77, 0x00, 0x3e, 0x00, 0xf7, 0x09,
-		0xee, 0xfe, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0a, 0x04, 0x80, 0xc2, 0x15,
-		0x0e, 0x00, 0x77, 0x00, 0x2a, 0x00, 0xf7, 0x09, 0xda, 0xfe, 0xc1, 0x15,
-		0x00, 0x80, 0xc1, 0x0c, 0x04, 0x87, 0xc2, 0x15, 0x0f, 0x00, 0x77, 0x00,
-		0x16, 0x00, 0xf7, 0x09, 0xc6, 0xfe, 0xc1, 0x15, 0x00, 0x40, 0xc1, 0x0c,
-		0x04, 0x86, 0xc2, 0x15, 0x10, 0x00, 0x77, 0x00, 0x02, 0x00, 0x87, 0x00,
-		0xf7, 0x09, 0xb0, 0xfe, 0x80, 0x10, 0xf7, 0x09, 0x7e, 0x04, 0xc0, 0x8d,
-		0xf7, 0x09, 0x78, 0x04, 0xc0, 0x15, 0xbc, 0x03, 0xf7, 0x09, 0x52, 0x04,
-		0x87, 0x00, 0x4d, 0x46, 0x50, 0x53, 0x20, 0x2f, 0x20, 0x4d, 0x54, 0x50,
-		0x53, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46,
-		0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00, 0x50, 0x53, 0x57, 0x20, 0x74, 0x72,
-		0x69, 0x67, 0x67, 0x65, 0x72, 0x20, 0x66, 0x61, 0x69, 0x6c, 0x0d, 0x0a,
-		0x00, 0x50, 0x53, 0x57, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e,
-		0x67, 0x20, 0x74, 0x65, 0x73, 0x74, 0x0d, 0x0a, 0x00, 0x00, 0xc0, 0x15,
-		0xb4, 0x04, 0xf7, 0x09, 0x04, 0x04, 0xc0, 0x15, 0x01, 0x80, 0xc1, 0x15,
-		0x01, 0x01, 0xc0, 0x65, 0xeb, 0x03, 0x40, 0x0b, 0xc2, 0x8d, 0xc2, 0x45,
-		0xf0, 0xff, 0x80, 0x60, 0xc1, 0x0a, 0xc1, 0x0b, 0xf6, 0x02, 0xc0, 0x25,
-		0xf0, 0x72, 0x12, 0x02, 0xc0, 0x15, 0x01, 0x80, 0xc1, 0x15, 0x01, 0x01,
-		0xc0, 0x65, 0x0d, 0x00, 0x40, 0x8b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff,
-		0x80, 0x60, 0xc1, 0x0a, 0xc1, 0x0b, 0xf6, 0x02, 0xc0, 0x25, 0x0e, 0x90,
-		0x01, 0x02, 0x87, 0x00, 0xc0, 0x15, 0x3c, 0x04, 0xf7, 0x09, 0xb6, 0x03,
-		0x87, 0x00, 0x41, 0x44, 0x43, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69,
-		0x6e, 0x67, 0x20, 0x46, 0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00, 0xc0, 0x15,
-		0x01, 0x80, 0xc1, 0x15, 0x01, 0x01, 0xc0, 0xe5, 0xeb, 0x03, 0x80, 0x0b,
-		0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0x80, 0xe0, 0xc1, 0x0a, 0xc1, 0x0b,
-		0xf6, 0x02, 0xc0, 0x25, 0x0a, 0x8d, 0x12, 0x02, 0xc0, 0x15, 0x01, 0x80,
-		0xc1, 0x15, 0x01, 0x01, 0xc0, 0xe5, 0x0d, 0x00, 0x80, 0x8b, 0xc2, 0x8d,
-		0xc2, 0x45, 0xf0, 0xff, 0x80, 0xe0, 0xc1, 0x0a, 0xc1, 0x0b, 0xf6, 0x02,
-		0xc0, 0x25, 0xec, 0x6f, 0x01, 0x02, 0x87, 0x00, 0xc0, 0x15, 0xa0, 0x04,
-		0xf7, 0x09, 0x52, 0x03, 0x87, 0x00, 0x53, 0x42, 0x43, 0x20, 0x68, 0x61,
-		0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46, 0x41, 0x49, 0x4c, 0x0d,
-		0x0a, 0x00, 0x41, 0x44, 0x43, 0x2f, 0x53, 0x42, 0x43, 0x20, 0x74, 0x65,
-		0x73, 0x74, 0x0d, 0x0a, 0x00, 0x00, 0xc0, 0x15, 0x3d, 0x06, 0xf7, 0x09,
-		0x24, 0x03, 0xc0, 0x15, 0x55, 0xaa, 0xc0, 0x25, 0x55, 0xaa, 0x04, 0x03,
-		0xc0, 0x15, 0x01, 0x00, 0x77, 0x00, 0x36, 0x01, 0xc0, 0x95, 0xf0, 0x00,
-		0xc0, 0x25, 0xf0, 0xff, 0x04, 0x03, 0xc0, 0x15, 0x02, 0x00, 0x77, 0x00,
-		0x24, 0x01, 0xc0, 0x95, 0x7f, 0x00, 0xc0, 0x25, 0x7f, 0x00, 0x04, 0x03,
-		0xc0, 0x15, 0x03, 0x00, 0x77, 0x00, 0x12, 0x01, 0xc0, 0x15, 0x52, 0x06,
-		0x01, 0x12, 0xc1, 0x25, 0xd2, 0x04, 0x04, 0x03, 0xc0, 0x15, 0x04, 0x00,
-		0x77, 0x00, 0xfe, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x92, 0xc1, 0x25,
-		0xd2, 0xff, 0x04, 0x03, 0xc0, 0x15, 0x05, 0x00, 0x77, 0x00, 0xea, 0x00,
-		0xc0, 0x15, 0x52, 0x06, 0x01, 0x92, 0xc1, 0x25, 0xd2, 0x04, 0x04, 0x02,
-		0xc0, 0x15, 0x06, 0x00, 0x77, 0x00, 0xd6, 0x00, 0xc0, 0x15, 0x52, 0x06,
-		0x01, 0x14, 0xc1, 0x25, 0xd2, 0x04, 0x04, 0x03, 0xc0, 0x15, 0x07, 0x00,
-		0x77, 0x00, 0xc2, 0x00, 0xc2, 0x15, 0x54, 0x06, 0x02, 0x20, 0x04, 0x03,
-		0xc0, 0x15, 0x08, 0x00, 0x77, 0x00, 0xb2, 0x00, 0xc0, 0x15, 0x52, 0x06,
-		0x01, 0x94, 0xc1, 0xa5, 0xd2, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x09, 0x00,
-		0x77, 0x00, 0x9e, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x00, 0x14, 0xc0, 0x25,
-		0xd2, 0x04, 0x04, 0x03, 0xc0, 0x15, 0x0a, 0x00, 0x77, 0x00, 0x8a, 0x00,
-		0xc0, 0x1d, 0xc8, 0x00, 0xc8, 0x25, 0xd2, 0x04, 0x04, 0x03, 0xc0, 0x15,
-		0x0c, 0x00, 0x77, 0x00, 0x78, 0x00, 0x01, 0x16, 0xc2, 0x15, 0x54, 0x06,
-		0x02, 0x20, 0x04, 0x03, 0xc0, 0x15, 0x0d, 0x00, 0x77, 0x00, 0x66, 0x00,
-		0xc0, 0x15, 0x52, 0x06, 0x01, 0x18, 0xc1, 0x25, 0x67, 0x11, 0x04, 0x03,
-		0xc0, 0x15, 0x0e, 0x00, 0x77, 0x00, 0x52, 0x00, 0xc2, 0x15, 0x50, 0x06,
-		0x02, 0x20, 0x04, 0x03, 0xc0, 0x15, 0x0f, 0x00, 0x77, 0x00, 0x42, 0x00,
-		0xc0, 0x15, 0x52, 0x06, 0x01, 0x98, 0xc1, 0xa5, 0x11, 0x00, 0x04, 0x03,
-		0xc0, 0x15, 0x10, 0x00, 0x77, 0x00, 0x2e, 0x00, 0xc0, 0x15, 0x52, 0x06,
-		0x01, 0x1c, 0x02, 0x00, 0xc1, 0x25, 0xe1, 0x10, 0x04, 0x03, 0xc0, 0x15,
-		0x11, 0x00, 0x77, 0x00, 0x18, 0x00, 0xc0, 0x15, 0x56, 0x06, 0x01, 0x1e,
-		0x02, 0x00, 0xc1, 0x25, 0xe1, 0x10, 0x04, 0x03, 0xc0, 0x15, 0x12, 0x00,
-		0x77, 0x00, 0x02, 0x00, 0x87, 0x00, 0xf7, 0x09, 0xf6, 0x01, 0xc0, 0x15,
-		0x22, 0x06, 0xf7, 0x09, 0xd0, 0x01, 0x87, 0x00, 0x61, 0x64, 0x64, 0x72,
-		0x65, 0x73, 0x73, 0x69, 0x6e, 0x67, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c,
-		0x69, 0x6e, 0x67, 0x20, 0x46, 0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00, 0x61,
-		0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x69, 0x6e, 0x67, 0x20, 0x74, 0x65,
-		0x73, 0x74, 0x73, 0x0d, 0x0a, 0x00, 0x67, 0x11, 0xd2, 0x04, 0xe1, 0x10,
-		0x52, 0x06, 0x54, 0x06, 0xf7, 0x09, 0x66, 0xfe, 0x87, 0x00, 0xc0, 0x15,
-		0xce, 0x06, 0xf7, 0x09, 0x88, 0x01, 0xc0, 0x15, 0x03, 0x00, 0x00, 0x8d,
-		0xc0, 0x15, 0x00, 0x00, 0xc1, 0x8d, 0xc1, 0x45, 0xf0, 0xff, 0xc1, 0x25,
-		0x05, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x01, 0x00, 0x77, 0x00, 0x20, 0x00,
-		0xc0, 0x15, 0x00, 0x00, 0x00, 0x8d, 0xc0, 0x15, 0x00, 0x80, 0xc1, 0x8d,
-		0xc1, 0x45, 0xf0, 0xff, 0xc1, 0xa5, 0x08, 0x00, 0x04, 0x03, 0xc0, 0x15,
-		0x02, 0x00, 0x77, 0x00, 0x02, 0x00, 0x87, 0x00, 0xf7, 0x09, 0x64, 0x01,
-		0x40, 0x10, 0xf7, 0x09, 0x5e, 0x01, 0xc0, 0x15, 0xba, 0x06, 0xf7, 0x09,
-		0x38, 0x01, 0x87, 0x00, 0x4d, 0x4f, 0x56, 0x20, 0x68, 0x61, 0x6e, 0x64,
+#define PROGRAM 1
+
+#if PROGRAM == 1
+	// xxd -i tester  <-- raw, not the .bin!
+	constexpr unsigned char tester[] = {
+		0xc6, 0x15, 0x00, 0x02, 0x77, 0x00, 0xb6, 0x05, 0xc0, 0x15, 0xcf, 0x03,
+		0xf7, 0x09, 0xe0, 0x05, 0xc1, 0x15, 0x5d, 0x6b, 0x01, 0x8d, 0xa1, 0x00,
+		0xa2, 0x00, 0xa4, 0x00, 0xa8, 0x00, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0x00,
+		0xc2, 0x8b, 0x01, 0x02, 0x87, 0x00, 0x80, 0x10, 0xf7, 0x09, 0xde, 0x05,
+		0xc0, 0x15, 0xa0, 0x03, 0xf7, 0x09, 0xb8, 0x05, 0x87, 0x00, 0xa1, 0x00,
+		0xa2, 0x00, 0xa4, 0x00, 0xa8, 0x00, 0x87, 0x00, 0xf7, 0x09, 0xf2, 0xff,
+		0xc1, 0x15, 0x00, 0x80, 0xc1, 0x8b, 0x04, 0x03, 0xc2, 0x15, 0x01, 0x00,
+		0x77, 0x00, 0x2e, 0x01, 0xf7, 0x09, 0xde, 0xff, 0xc1, 0x15, 0x80, 0x00,
+		0xc1, 0x8b, 0x04, 0x02, 0xc2, 0x15, 0x02, 0x00, 0x77, 0x00, 0x1a, 0x01,
+		0xf7, 0x09, 0xca, 0xff, 0xc1, 0x15, 0x7f, 0x00, 0x81, 0x8a, 0x04, 0x85,
+		0xc2, 0x15, 0x03, 0x00, 0x77, 0x00, 0x06, 0x01, 0xf7, 0x09, 0xb6, 0xff,
+		0xc1, 0x15, 0x80, 0xff, 0xc1, 0x8a, 0x04, 0x85, 0xc2, 0x15, 0x04, 0x00,
+		0x77, 0x00, 0xf2, 0x00, 0xf7, 0x09, 0xa2, 0xff, 0xc1, 0x15, 0x7f, 0x00,
+		0x81, 0x8a, 0x04, 0x81, 0xc2, 0x15, 0x05, 0x00, 0x77, 0x00, 0xde, 0x00,
+		0xf7, 0x09, 0x8e, 0xff, 0xc1, 0x15, 0x80, 0x00, 0xc1, 0x8a, 0x04, 0x80,
+		0xc2, 0x15, 0x06, 0x00, 0x77, 0x00, 0xca, 0x00, 0xf7, 0x09, 0x7a, 0xff,
+		0xc1, 0x15, 0x80, 0x00, 0xc1, 0x8c, 0x04, 0x87, 0xc2, 0x15, 0x07, 0x00,
+		0x77, 0x00, 0xb6, 0x00, 0xf7, 0x09, 0x66, 0xff, 0xc1, 0x15, 0x40, 0x00,
+		0xc1, 0x8c, 0x04, 0x86, 0xc2, 0x15, 0x08, 0x00, 0x77, 0x00, 0xa2, 0x00,
+		0xf7, 0x09, 0x52, 0xff, 0xc1, 0x15, 0x00, 0x00, 0xc1, 0x0b, 0x04, 0x03,
+		0xc2, 0x15, 0x09, 0x00, 0x77, 0x00, 0x8e, 0x00, 0xf7, 0x09, 0x3e, 0xff,
+		0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0b, 0x04, 0x02, 0xc2, 0x15, 0x0a, 0x00,
+		0x77, 0x00, 0x7a, 0x00, 0xf7, 0x09, 0x2a, 0xff, 0xc1, 0x15, 0xff, 0x7f,
+		0x81, 0x0a, 0x04, 0x85, 0xc2, 0x15, 0x0b, 0x00, 0x77, 0x00, 0x66, 0x00,
+		0xf7, 0x09, 0x16, 0xff, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0a, 0x04, 0x85,
+		0xc2, 0x15, 0x0c, 0x00, 0x77, 0x00, 0x52, 0x00, 0xf7, 0x09, 0x02, 0xff,
+		0xc1, 0x15, 0xff, 0x7f, 0x81, 0x0a, 0x04, 0x81, 0xc2, 0x15, 0x0d, 0x00,
+		0x77, 0x00, 0x3e, 0x00, 0xf7, 0x09, 0xee, 0xfe, 0xc1, 0x15, 0x00, 0x80,
+		0xc1, 0x0a, 0x04, 0x80, 0xc2, 0x15, 0x0e, 0x00, 0x77, 0x00, 0x2a, 0x00,
+		0xf7, 0x09, 0xda, 0xfe, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0c, 0x04, 0x87,
+		0xc2, 0x15, 0x0f, 0x00, 0x77, 0x00, 0x16, 0x00, 0xf7, 0x09, 0xc6, 0xfe,
+		0xc1, 0x15, 0x00, 0x40, 0xc1, 0x0c, 0x04, 0x86, 0xc2, 0x15, 0x10, 0x00,
+		0x77, 0x00, 0x02, 0x00, 0x87, 0x00, 0xf7, 0x09, 0xb0, 0xfe, 0x80, 0x10,
+		0xf7, 0x09, 0x7e, 0x04, 0xc0, 0x8d, 0xf7, 0x09, 0x78, 0x04, 0xc0, 0x15,
+		0xbc, 0x03, 0xf7, 0x09, 0x52, 0x04, 0x87, 0x00, 0x4d, 0x46, 0x50, 0x53,
+		0x20, 0x2f, 0x20, 0x4d, 0x54, 0x50, 0x53, 0x20, 0x68, 0x61, 0x6e, 0x64,
 		0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46, 0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00,
-		0x4d, 0x4f, 0x56, 0x20, 0x66, 0x6c, 0x61, 0x67, 0x20, 0x74, 0x65, 0x73,
-		0x74, 0x0d, 0x0a, 0x00, 0xc0, 0x15, 0x50, 0x07, 0xf7, 0x09, 0x0a, 0x01,
-		0xc0, 0x15, 0x0f, 0x00, 0x00, 0x8d, 0xc1, 0x15, 0x00, 0x00, 0xc1, 0x0b,
-		0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0xc2, 0x25, 0x04, 0x00, 0x04, 0x03,
-		0xc0, 0x15, 0x01, 0x00, 0x77, 0x00, 0x22, 0x00, 0xc0, 0x15, 0x0f, 0x00,
-		0x00, 0x8d, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0b, 0xc2, 0x8d, 0xc2, 0x45,
-		0xf0, 0xff, 0xc2, 0x25, 0x08, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x02, 0x00,
-		0x77, 0x00, 0x02, 0x00, 0x87, 0x00, 0xf7, 0x09, 0xe2, 0x00, 0x80, 0x10,
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-		0x87, 0x00, 0x54, 0x53, 0x54, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69,
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-		0x02, 0x04, 0x77, 0x00, 0x08, 0x00, 0xc0, 0x15, 0x01, 0x00, 0x77, 0x00,
-		0x12, 0x00, 0xc0, 0x15, 0x0a, 0x00, 0x00, 0x8d, 0x04, 0x04, 0xc0, 0x15,
-		0x02, 0x00, 0x77, 0x00, 0x02, 0x00, 0x87, 0x00, 0xf7, 0x09, 0x80, 0x00,
-		0x80, 0x10, 0xf7, 0x09, 0x7a, 0x00, 0xc0, 0x15, 0x9e, 0x07, 0xf7, 0x09,
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-		0xf7, 0x09, 0x76, 0xfa, 0xf7, 0x09, 0x12, 0xfc, 0xf7, 0x09, 0x7a, 0xfc,
-		0xf7, 0x09, 0x80, 0xfe, 0xf7, 0x09, 0x82, 0xfe, 0xf7, 0x09, 0xfc, 0xfe,
-		0xf7, 0x09, 0x76, 0xff, 0xc0, 0x15, 0x72, 0x08, 0xf7, 0x09, 0x02, 0x00,
-		0x07, 0x89, 0x26, 0x10, 0xe6, 0x8d, 0xc8, 0x8b, 0x08, 0x03, 0x1f, 0x92,
-		0x76, 0xff, 0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x80, 0x80, 0x0a, 0x77, 0x00,
-		0xec, 0xff, 0x16, 0x8d, 0x80, 0x15, 0x87, 0x00, 0xe6, 0x8d, 0x26, 0x10,
-		0x66, 0x10, 0xc1, 0x15, 0x10, 0x00, 0xc0, 0x0c, 0x07, 0x87, 0xdf, 0x8b,
-		0x74, 0xff, 0xfd, 0x80, 0xdf, 0x95, 0x30, 0x00, 0x76, 0xff, 0x07, 0x01,
-		0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x80, 0xdf, 0x95, 0x31, 0x00, 0x76, 0xff,
-		0x00, 0x01, 0xc1, 0x0a, 0xc1, 0x0b, 0xed, 0x02, 0xdf, 0x8b, 0x74, 0xff,
-		0xfd, 0x80, 0xdf, 0x95, 0x20, 0x00, 0x76, 0xff, 0xdf, 0x8b, 0x74, 0xff,
-		0xfd, 0x80, 0xdf, 0x95, 0x20, 0x00, 0x76, 0xff, 0x81, 0x15, 0x80, 0x15,
-		0x16, 0x8d, 0x87, 0x00, 0x74, 0x65, 0x73, 0x74, 0x65, 0x72, 0x20, 0x72,
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-		0x68, 0x65, 0x64, 0x0d, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x50, 0x53, 0x57, 0x20, 0x74, 0x72, 0x69, 0x67, 0x67, 0x65, 0x72, 0x20,
+		0x66, 0x61, 0x69, 0x6c, 0x0d, 0x0a, 0x00, 0x50, 0x53, 0x57, 0x20, 0x68,
+		0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x74, 0x65, 0x73, 0x74,
+		0x0d, 0x0a, 0x00, 0x00, 0xc0, 0x15, 0xb4, 0x04, 0xf7, 0x09, 0x04, 0x04,
+		0xc0, 0x15, 0x01, 0x80, 0xc1, 0x15, 0x01, 0x01, 0xc0, 0x65, 0xeb, 0x03,
+		0x40, 0x0b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0x80, 0x60, 0xc1, 0x0a,
+		0xc1, 0x0b, 0xf6, 0x02, 0xc0, 0x25, 0xf0, 0x72, 0x12, 0x02, 0xc0, 0x15,
+		0x01, 0x80, 0xc1, 0x15, 0x01, 0x01, 0xc0, 0x65, 0x0d, 0x00, 0x40, 0x8b,
+		0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0x80, 0x60, 0xc1, 0x0a, 0xc1, 0x0b,
+		0xf6, 0x02, 0xc0, 0x25, 0x0e, 0x90, 0x01, 0x02, 0x87, 0x00, 0xc0, 0x15,
+		0x3c, 0x04, 0xf7, 0x09, 0xb6, 0x03, 0x87, 0x00, 0x41, 0x44, 0x43, 0x20,
+		0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46, 0x41, 0x49,
+		0x4c, 0x0d, 0x0a, 0x00, 0xc0, 0x15, 0x01, 0x80, 0xc1, 0x15, 0x01, 0x01,
+		0xc0, 0xe5, 0xeb, 0x03, 0x80, 0x0b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff,
+		0x80, 0xe0, 0xc1, 0x0a, 0xc1, 0x0b, 0xf6, 0x02, 0xc0, 0x25, 0x0a, 0x8d,
+		0x12, 0x02, 0xc0, 0x15, 0x01, 0x80, 0xc1, 0x15, 0x01, 0x01, 0xc0, 0xe5,
+		0x0d, 0x00, 0x80, 0x8b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0x80, 0xe0,
+		0xc1, 0x0a, 0xc1, 0x0b, 0xf6, 0x02, 0xc0, 0x25, 0xec, 0x6f, 0x01, 0x02,
+		0x87, 0x00, 0xc0, 0x15, 0xa0, 0x04, 0xf7, 0x09, 0x52, 0x03, 0x87, 0x00,
+		0x53, 0x42, 0x43, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67,
+		0x20, 0x46, 0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00, 0x41, 0x44, 0x43, 0x2f,
+		0x53, 0x42, 0x43, 0x20, 0x74, 0x65, 0x73, 0x74, 0x0d, 0x0a, 0x00, 0x00,
+		0xc0, 0x15, 0x3d, 0x06, 0xf7, 0x09, 0x24, 0x03, 0xc0, 0x15, 0x55, 0xaa,
+		0xc0, 0x25, 0x55, 0xaa, 0x04, 0x03, 0xc0, 0x15, 0x01, 0x00, 0x77, 0x00,
+		0x36, 0x01, 0xc0, 0x95, 0xf0, 0x00, 0xc0, 0x25, 0xf0, 0xff, 0x04, 0x03,
+		0xc0, 0x15, 0x02, 0x00, 0x77, 0x00, 0x24, 0x01, 0xc0, 0x95, 0x7f, 0x00,
+		0xc0, 0x25, 0x7f, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x03, 0x00, 0x77, 0x00,
+		0x12, 0x01, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x12, 0xc1, 0x25, 0xd2, 0x04,
+		0x04, 0x03, 0xc0, 0x15, 0x04, 0x00, 0x77, 0x00, 0xfe, 0x00, 0xc0, 0x15,
+		0x52, 0x06, 0x01, 0x92, 0xc1, 0x25, 0xd2, 0xff, 0x04, 0x03, 0xc0, 0x15,
+		0x05, 0x00, 0x77, 0x00, 0xea, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x92,
+		0xc1, 0x25, 0xd2, 0x04, 0x04, 0x02, 0xc0, 0x15, 0x06, 0x00, 0x77, 0x00,
+		0xd6, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x14, 0xc1, 0x25, 0xd2, 0x04,
+		0x04, 0x03, 0xc0, 0x15, 0x07, 0x00, 0x77, 0x00, 0xc2, 0x00, 0xc2, 0x15,
+		0x54, 0x06, 0x02, 0x20, 0x04, 0x03, 0xc0, 0x15, 0x08, 0x00, 0x77, 0x00,
+		0xb2, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x94, 0xc1, 0xa5, 0xd2, 0x00,
+		0x04, 0x03, 0xc0, 0x15, 0x09, 0x00, 0x77, 0x00, 0x9e, 0x00, 0xc0, 0x15,
+		0x52, 0x06, 0x00, 0x14, 0xc0, 0x25, 0xd2, 0x04, 0x04, 0x03, 0xc0, 0x15,
+		0x0a, 0x00, 0x77, 0x00, 0x8a, 0x00, 0xc0, 0x1d, 0xc8, 0x00, 0xc8, 0x25,
+		0xd2, 0x04, 0x04, 0x03, 0xc0, 0x15, 0x0c, 0x00, 0x77, 0x00, 0x78, 0x00,
+		0x01, 0x16, 0xc2, 0x15, 0x54, 0x06, 0x02, 0x20, 0x04, 0x03, 0xc0, 0x15,
+		0x0d, 0x00, 0x77, 0x00, 0x66, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x18,
+		0xc1, 0x25, 0x67, 0x11, 0x04, 0x03, 0xc0, 0x15, 0x0e, 0x00, 0x77, 0x00,
+		0x52, 0x00, 0xc2, 0x15, 0x50, 0x06, 0x02, 0x20, 0x04, 0x03, 0xc0, 0x15,
+		0x0f, 0x00, 0x77, 0x00, 0x42, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x98,
+		0xc1, 0xa5, 0x11, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x10, 0x00, 0x77, 0x00,
+		0x2e, 0x00, 0xc0, 0x15, 0x52, 0x06, 0x01, 0x1c, 0x02, 0x00, 0xc1, 0x25,
+		0xe1, 0x10, 0x04, 0x03, 0xc0, 0x15, 0x11, 0x00, 0x77, 0x00, 0x18, 0x00,
+		0xc0, 0x15, 0x56, 0x06, 0x01, 0x1e, 0x02, 0x00, 0xc1, 0x25, 0xe1, 0x10,
+		0x04, 0x03, 0xc0, 0x15, 0x12, 0x00, 0x77, 0x00, 0x02, 0x00, 0x87, 0x00,
+		0xf7, 0x09, 0xf6, 0x01, 0xc0, 0x15, 0x22, 0x06, 0xf7, 0x09, 0xd0, 0x01,
+		0x87, 0x00, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x69, 0x6e, 0x67,
+		0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46, 0x41,
+		0x49, 0x4c, 0x0d, 0x0a, 0x00, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73,
+		0x69, 0x6e, 0x67, 0x20, 0x74, 0x65, 0x73, 0x74, 0x73, 0x0d, 0x0a, 0x00,
+		0x67, 0x11, 0xd2, 0x04, 0xe1, 0x10, 0x52, 0x06, 0x54, 0x06, 0xf7, 0x09,
+		0x66, 0xfe, 0x87, 0x00, 0xc0, 0x15, 0xce, 0x06, 0xf7, 0x09, 0x88, 0x01,
+		0xc0, 0x15, 0x03, 0x00, 0x00, 0x8d, 0xc0, 0x15, 0x00, 0x00, 0xc1, 0x8d,
+		0xc1, 0x45, 0xf0, 0xff, 0xc1, 0x25, 0x05, 0x00, 0x04, 0x03, 0xc0, 0x15,
+		0x01, 0x00, 0x77, 0x00, 0x20, 0x00, 0xc0, 0x15, 0x00, 0x00, 0x00, 0x8d,
+		0xc0, 0x15, 0x00, 0x80, 0xc1, 0x8d, 0xc1, 0x45, 0xf0, 0xff, 0xc1, 0xa5,
+		0x08, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x02, 0x00, 0x77, 0x00, 0x02, 0x00,
+		0x87, 0x00, 0xf7, 0x09, 0x64, 0x01, 0x40, 0x10, 0xf7, 0x09, 0x5e, 0x01,
+		0xc0, 0x15, 0xba, 0x06, 0xf7, 0x09, 0x38, 0x01, 0x87, 0x00, 0x4d, 0x4f,
+		0x56, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46,
+		0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00, 0x4d, 0x4f, 0x56, 0x20, 0x66, 0x6c,
+		0x61, 0x67, 0x20, 0x74, 0x65, 0x73, 0x74, 0x0d, 0x0a, 0x00, 0xc0, 0x15,
+		0x50, 0x07, 0xf7, 0x09, 0x0a, 0x01, 0xc0, 0x15, 0x0f, 0x00, 0x00, 0x8d,
+		0xc1, 0x15, 0x00, 0x00, 0xc1, 0x0b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff,
+		0xc2, 0x25, 0x04, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x01, 0x00, 0x77, 0x00,
+		0x22, 0x00, 0xc0, 0x15, 0x0f, 0x00, 0x00, 0x8d, 0xc1, 0x15, 0x00, 0x80,
+		0xc1, 0x0b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0xc2, 0x25, 0x08, 0x00,
+		0x04, 0x03, 0xc0, 0x15, 0x02, 0x00, 0x77, 0x00, 0x02, 0x00, 0x87, 0x00,
+		0xf7, 0x09, 0xe2, 0x00, 0x80, 0x10, 0xf7, 0x09, 0xdc, 0x00, 0xc0, 0x15,
+		0x3c, 0x07, 0xf7, 0x09, 0xb6, 0x00, 0x87, 0x00, 0x54, 0x53, 0x54, 0x20,
+		0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46, 0x41, 0x49,
+		0x4c, 0x0d, 0x0a, 0x00, 0x54, 0x53, 0x54, 0x20, 0x74, 0x65, 0x73, 0x74,
+		0x0d, 0x0a, 0x00, 0x00, 0xc0, 0x15, 0xb2, 0x07, 0xf7, 0x09, 0x8c, 0x00,
+		0xc0, 0x15, 0x08, 0x00, 0x00, 0x8d, 0x02, 0x04, 0x77, 0x00, 0x08, 0x00,
+		0xc0, 0x15, 0x01, 0x00, 0x77, 0x00, 0x12, 0x00, 0xc0, 0x15, 0x0a, 0x00,
+		0x00, 0x8d, 0x04, 0x04, 0xc0, 0x15, 0x02, 0x00, 0x77, 0x00, 0x02, 0x00,
+		0x87, 0x00, 0xf7, 0x09, 0x80, 0x00, 0x80, 0x10, 0xf7, 0x09, 0x7a, 0x00,
+		0xc0, 0x15, 0x9e, 0x07, 0xf7, 0x09, 0x54, 0x00, 0x87, 0x00, 0x42, 0x47,
+		0x45, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46,
+		0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00, 0x42, 0x47, 0x45, 0x20, 0x74, 0x65,
+		0x73, 0x74, 0x0d, 0x0a, 0x00, 0x00, 0xc0, 0x15, 0x5e, 0x08, 0xf7, 0x09,
+		0x2a, 0x00, 0xf7, 0x09, 0x3e, 0xfa, 0xf7, 0x09, 0x76, 0xfa, 0xf7, 0x09,
+		0x12, 0xfc, 0xf7, 0x09, 0x7a, 0xfc, 0xf7, 0x09, 0x80, 0xfe, 0xf7, 0x09,
+		0x82, 0xfe, 0xf7, 0x09, 0xfc, 0xfe, 0xf7, 0x09, 0x76, 0xff, 0xc0, 0x15,
+		0x72, 0x08, 0xf7, 0x09, 0x02, 0x00, 0x07, 0x89, 0x26, 0x10, 0xe6, 0x8d,
+		0xc8, 0x8b, 0x08, 0x03, 0x1f, 0x92, 0x76, 0xff, 0xdf, 0x8b, 0x74, 0xff,
+		0xfd, 0x80, 0x80, 0x0a, 0x77, 0x00, 0xec, 0xff, 0x16, 0x8d, 0x80, 0x15,
+		0x87, 0x00, 0xe6, 0x8d, 0x26, 0x10, 0x66, 0x10, 0xc1, 0x15, 0x10, 0x00,
+		0xc0, 0x0c, 0x07, 0x87, 0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x80, 0xdf, 0x95,
+		0x30, 0x00, 0x76, 0xff, 0x07, 0x01, 0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x80,
+		0xdf, 0x95, 0x31, 0x00, 0x76, 0xff, 0x00, 0x01, 0xc1, 0x0a, 0xc1, 0x0b,
+		0xed, 0x02, 0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x80, 0xdf, 0x95, 0x20, 0x00,
+		0x76, 0xff, 0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x80, 0xdf, 0x95, 0x20, 0x00,
+		0x76, 0xff, 0x81, 0x15, 0x80, 0x15, 0x16, 0x8d, 0x87, 0x00, 0x74, 0x65,
+		0x73, 0x74, 0x65, 0x72, 0x20, 0x72, 0x75, 0x6e, 0x6e, 0x69, 0x6e, 0x67,
+		0x2e, 0x2e, 0x2e, 0x0d, 0x0a, 0x00, 0x74, 0x65, 0x73, 0x74, 0x65, 0x72,
+		0x20, 0x66, 0x69, 0x6e, 0x69, 0x73, 0x68, 0x65, 0x64, 0x0d, 0x0a, 0x00,
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -176,16 +179,41 @@ void loadbin(bus *const b, uint16_t base)
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xdf, 0x01,
-		0x00, 0x06, 0x00, 0x00, 0x02
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00
 	};
+	constexpr unsigned int tester_len = 1924;
 
-	unsigned int ___tester_bin_len = 1937;
+	uint16_t base = 512;
+	uint16_t exec = 512;
+	const unsigned char *code = tester;
+	unsigned int code_len = tester_len;
+#endif
 
-	for(int i=0; i<___tester_bin_len; i++)
-		b -> writeByte(base++, ___tester_bin[i]);
+#if PROGRAM == 2
+	constexpr unsigned char test2[] = {
+		0xc6, 0x15, 0x00, 0x02, 0xc0, 0x15, 0x24, 0x02, 0xdf, 0x09, 0x0e, 0x02,
+		0x07, 0x89, 0x66, 0x10, 0x05, 0x01, 0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x03,
+		0x5f, 0x90, 0x76, 0xff, 0x01, 0x94, 0xf9, 0x02, 0x81, 0x15, 0x87, 0x00,
+		0x74, 0x68, 0x65, 0x20, 0x71, 0x75, 0x69, 0x63, 0x6b, 0x20, 0x62, 0x72,
+		0x6f, 0x77, 0x6e, 0x20, 0x2e, 0x2e, 0x2e, 0x00
+	};
+	constexpr unsigned int test2_len = 56;
+
+	uint16_t base = 512;
+	uint16_t exec = 512;
+	const unsigned char *code = test2;
+	unsigned int code_len = test2_len;
+#endif
+
+	for(int i=0; i<code_len; i++)
+		b -> writeByte(base++, code[i]);
+
+	return exec;
 }
 
+uint16_t exec_addr = 0;
+
 void setup() {
 	Serial.begin(115200);
 
@@ -203,15 +231,15 @@ void setup() {
 
 	c->setEmulateMFPT(true);
 
-	Serial.println(F("Load program"));
-	loadbin(b, 01000);
-	c->setRegister(7, 01000);
-
 	Serial.println(F("Init TTY"));
 	tty_ = new tty(false);
 	Serial.println(F("Connect TTY to bus"));
 	b->add_tty(tty_);
 
+	Serial.println(F("Load program"));
+	exec_addr = loadbin(b);
+	c->setRegister(7, exec_addr);
+
 	Serial.println(F("Press <enter> to start"));
 
 	for(;;) {
@@ -224,12 +252,17 @@ void setup() {
 		delay(1);
 	}
 
-	Serial.println(F("Emulation go!"));
+	Serial.println(F("Emulation starting!"));
 }
 
 void loop() {
 	if (c->step()) {
-		c->setRegister(7, 01000);
+		Serial.println(F(""));
+		Serial.println(F(" *** EMULATION STOPPED *** "));
+		delay(1000);
+		Serial.println(F(" *** EMULATION RESTARTING *** "));
+
+		c->setRegister(7, exec_addr);
 		c->resetHalt();
 	}
 }
diff --git a/cpu.cpp b/cpu.cpp
index d12b047..470904f 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -1103,7 +1103,7 @@ bool cpu::misc_operations(const uint16_t instr)
 		case 0b0000000000000000: // HALT
 			D(fprintf(stderr, "HALT\n");)
 			// pretend HALT is not executed, proceed
-			//haltFlag = true;
+			haltFlag = true;
 			return true;
 
 		case 0b0000000000000001: // WAIT
diff --git a/rk05.cpp b/rk05.cpp
index e5e93d6..6c2ef3b 100644
--- a/rk05.cpp
+++ b/rk05.cpp
@@ -120,7 +120,7 @@ void rk05::writeWord(const uint16_t addr, uint16_t v)
 			else if (func == 1) { // write
 				D(fprintf(stderr, "RK05 writing %zo bytes to offset %o (%d dec)\n", reclen, diskoffb, diskoffb);)
 
-				int p = reclen; // FIXME
+				uint32_t p = reclen; // FIXME
 				for(size_t i=0; i<reclen; i++)
 					xfer_buffer[i] = b -> readByte(memoff + i);
 
@@ -150,15 +150,15 @@ void rk05::writeWord(const uint16_t addr, uint16_t v)
 				if (fseek(fh, diskoffb, SEEK_SET) == -1)
 					fprintf(stderr, "RK05 seek error %s\n", strerror(errno));
 				
-				int temp = reclen;
-				int p = memoff;
+				uint32_t temp = reclen;
+				uint32_t p = memoff;
 				while(temp > 0) {
-					int cur = std::min(int(sizeof xfer_buffer), temp);
+					uint32_t cur = std::min(uint32_t(sizeof xfer_buffer), temp);
 
 					if (fread(xfer_buffer, 1, cur, fh) != size_t(cur))
 						D(fprintf(stderr, "RK05 fread error: %s\n", strerror(errno));)
 
-					for(int i=0; i<cur; i++) {
+					for(uint32_t i=0; i<cur; i++) {
 						if (p < 0160000)
 							b -> writeByte(p, xfer_buffer[i]);
 						p++;