Initial attempt at AHA-1542CP

src/include/86box/scsi_aha154x.h

@@ -5,6 +5,7 @@ extern const device_t aha154xa_device;
 extern const device_t aha154xb_device;
 extern const device_t aha154xc_device;
 extern const device_t aha154xcf_device;
+extern const device_t aha154xcp_device;
 extern const device_t aha1640_device;
 
 extern	void aha_device_reset(void *p);

src/include/86box/scsi_x54x.h

@@ -367,6 +367,7 @@ typedef struct {
 #define		X54X_LBA_BIOS		 4
 #define		X54X_INT_GEOM_WRITABLE	 8
 #define		X54X_MBX_24BIT		16
+#define		X54X_ISAPNP		32
 
 typedef struct {
     /* 32 bytes */