Rockwell Automation 6008-SV2R VMEbus remote I/O Scanner - Manual (Page 166)

Chapter
Programming the Scanner
8
8Ć32
/*
** Block Transfer Data Structure
*/
/* maximum block transfer length, in words */
#define MAX_BT_DATALEN
64
typedef struct {
unsigned short cmd; /* Block Transfer Command Word */
unsigned short cnfstat; /* Block Transfer Result */
unsigned short tag; /* Block Transfer Tag Word */
unsigned short addr; /* Block Transfer Address Word */
unsigned short datalen; /* Block Transfer Length Word */
unsigned short irq; /* Block Transfer Interrupt Word */
/* Block Transfer Data Buffer */
unsigned short
data[MAX_BT_DATALEN];
} bt_data;
/*
** Block Transfer Table Entry
*/
typedef struct {
unsigned short tag; /* Block Transfer Tag Word */
unsigned short addr; /* Block Transfer Address Word */
unsigned short datalen; /* Block Transfer Length Word */
unsigned short irq; /* Block Transfer Interrupt Word */
unsigned short sv2_flag; /* semaphore: sv6008–write */
unsigned short vmp_flag; /* semaphore: VME host write */
unsigned short turn_flag; /* semaphore: turn flag */
unsigned short status; /* status field */
/* Block Transfer Data Buffer */
unsigned short
data[MAX_BT_DATALEN];
} btentry;