1 files changed, 18 insertions, 3 deletions

diff --git a/emu/bus.c b/emu/bus.c
index 68ec972..33617c7 100644
--- a/emu/bus.c
+++ b/emu/bus.c
@@ -6,7 +6,9 @@
 static device_vtable_t const bus_vtable = {
 	bus_read,
 	bus_write,
-	device_draw,
+#ifdef WITH_GUI
+	bus_draw,
+#endif
 	bus_deinit
 };
 
@@ -55,13 +57,26 @@ void bus_write( void *obj, uint16_t addr, uint8_t data )
 	for( int i = 0; i < bus->nof_devices; i++ ) {
 		registered_device_t *reg = &bus->devices[i];
 		if( reg->from <= addr && addr <= reg->to ) {
-			return reg->device->vtable->write( reg->device, addr, data );
+			reg->device->vtable->write( reg->device, addr, data );
+			return;
 		}
 	}
 
-	fprintf( stderr, "ERROR: illegal bus access writing from address %04X\n", addr );
+	fprintf( stderr, "ERROR: illegal bus access writing to address %04X\n", addr );
 }
 
+#ifdef WITH_GUI
+void bus_draw( void *obj, SDL_Renderer *renderer )
+{
+	bus_t *bus = (bus_t *)obj;
+
+	for( int i = 0; i < bus->nof_devices; i++ ) {
+		device_t *device = bus->devices[i].device;
+		device->vtable->draw( device, renderer );
+	}
+}
+#endif
+
 void bus_deinit( void *obj )
 {
 	bus_t *bus = (bus_t *)obj;