Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 281)

14A. Driver488/SUB, C Languages III. COMMAND REFERENCES - 14. Command Summaries
III-266 Personal488 User’s Manual, Rev. 3.0
Prim char IEEE 488 primary address
SPResult unsigned char * Array of SPOLL results
Sec char IEEE 488 secondary address
SPstatus int Service request status
StatusVal IeeeStatusT * Pointer to status structure
SysCont bool System Controller flag for IEEE 488 interface
TermP TermT * Pointer to terminator structure
TermType int Terminator type: TERMIN or TERMOUT
Timeout long Timeout value in milliseconds
UntilFlag char SpollList operating mode
Defined Constants
Bus Command Constants Miscellaneous Constants
bcUNT 1 IN 1
bcUNL 2 OUT 2
bcMTA 3 ON 1
bcMLA 4 OFF 0
bcTALK 5 ALL -1
bcLISTEN 6 SAME -2
WHILE_SRQ -2
UNTIL_RSV -3
TRUE 1
FALSE 0
MAXHANDLES 50
NOIEEEADRESS -1
NODEVICE -1
NONODE NULL
TERMIN 1
TERMOUT 2
Structure Definitions
typedef struct {
bool SC;
bool CA;
uchar Primaddr;
uchar Secaddr;
bool SRQ;
bool addrChange;
bool talker;
bool listener;
bool triggered;
bool cleared;
bool transfer;
bool byteIn;
bool byteOut;
} IeeeStatusT;
typedef struct {
bool EOI;
int Char; bool
EightBits;
int
termChar[2];
} TermT;