#define PORT_DMA2_MODE_REG 0x00d6
#define PORT_DMA2_MASTER_CLEAR 0x00da
#define PORT_MATH_CLEAR 0x00f0
+#define PORT_LPT2 0x0278
#define PORT_SERIAL4 0x02e8
#define PORT_SERIAL2 0x02f8
+#define PORT_LPT1 0x0378
#define PORT_SERIAL3 0x03e8
#define PORT_FD_DOR 0x03f2
#define PORT_FD_STATUS 0x03f4