diff --git a/src/bus.c b/src/bus.c
index 4068c69..85c7771 100644
--- a/src/bus.c
+++ b/src/bus.c
@@ -47,6 +47,23 @@ bus_init()
 	return t;	
 }
 
+bool
+bus_load_buf(bus_t *t, uint16_t addr, uint8_t *buf, uint16_t bufsize)
+{
+	uint16_t i;
+
+	i = 0;
+
+	/* XXX: add sanity checks */
+
+	while (i < bufsize) {
+		t->space[i] = buf[i]; // XXX: overflow addr
+		i++;
+	}
+
+	return true;
+}
+
 bool
 bus_load_file(bus_t *t, uint16_t addr, const char *filename)
 {
diff --git a/src/bus.h b/src/bus.h
index 91c97cc..6e4d31c 100644
--- a/src/bus.h
+++ b/src/bus.h
@@ -17,6 +17,7 @@ void bus_write_1(bus_t *, uint16_t, uint8_t);
 bus_t bus_init();
 void bus_finish(bus_t *);
 bool bus_load_file(bus_t *, uint16_t, const char *);
+bool bus_load_buf(bus_t *, uint16_t, uint8_t *, uint16_t);
 
 #endif /* _BUS_H_ */