Hook up Bidirectional LPT, EPP, and ECP to all Super I/O chips (missing is vendor-specific Configuration Register B behavior but that's next on my list), fixed Super I/O chip mistakes for a number of machines, split 286/386SX/M6117D machines into three separate files and reordered them as well.

src/device/serial.c

@@ -475,6 +475,12 @@ serial_set_clock_src(serial_t *dev, double clock_src)
     serial_update_speed(dev);
 }
 
+void
+serial_set_type(serial_t *dev, uint8_t type)
+{
+    dev->type = type;
+}
+
 void
 serial_write(uint16_t addr, uint8_t val, void *priv)
 {