origADBAddr
ADBDataBlock structure
#include <DeskBus.h>
typedef struct ADBDataBlock { Size Offset Description
char devType; 1 0 What kind of an input only device?
char origADBAddr; 1 1 Device's original bus address
Ptr dbServiceRtPtr; 4 2 Address of the service routine
Ptr dbDataAreaAddr; 4 6 Address of the data area
typedef ADBDataBlock *ADBDBlkPtr;