Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 323)

15A. Driver488/DRV Commands III. COMMAND REFERENCES - 15. Command References
III-308 Personal488 User’s Manual, Rev. 3.0
SPOLL LIST
SYNTAX SPOLL LIST [UNTIL_RSV|WHILE_SRQ|ALL] addr[, addr...]
addr is a device name (primary with optional secondary) or an external device
name to be Serial Polled.
RESPONSE Number of devices serial polled followed by their responses
which are numbers in the range 0 to 255, separated by
commas.
MODE CA
BUS STATES ATN
•UNL, MLA, TAG, SPE, *ATN, data, ATN•SPD, UNT
SEE ALSO SPOLL, PPOLL
EXAMPLES PRINT#1,"SPOLL LIST ALL 16,17" Serial Poll devices 16 and 17.
INPUT#2,SPSTAT Receive the SPOLL status.
2,64,12 Device 16 responded with 64, and 17
responded with 12.
PRINT#1 “SPOLL LIST UNTIL_RSV 16,17" Serial Poll first device 16.
INPUT#2, SPSTAT Receive the SPOLL status.
1,64 Device 16 responded with 64.
SPOLL LIST performs a Serial Poll of one or more bus devices, and responds with the number of
devices actually polled and their individual responses. An optional flag specifies the criteria Driver488
should use to terminate scanning the list of devices.
If UNTIL_RSV is chosen, Driver488 Serial Polls the devices until the first device whose rsv bit is set,
is found. If WHILE_SRQ is chosen, Driver488 Serial Polls the devices until the SRQ bus signal becomes
unasserted. If ALL is chosen, all the devices are Serial Polled. The default is ALL .
STATUS
SYNTAX STATUS[name]
RESPONSE Character string as described below.
MODE Any
BUS STATES None
SEE ALSO ARM, SPOLL, GetError (Sub-Chapter 15B)
EXAMPLE PRINT#1,"STATUS" Read Driver488 status.
INPUT#2,A$ Receive status.
PRINT A$ Display status.
The STATUS command returns various items detailing the current state of Driver488/DRV. They are
returned as one long character string, based on the following table:
STATUS Item
(Starting Col., No. of Cols.)
Values and Description
Operating model (1,1) C : Controller; P: Peripheral
System Controller (2,1) S : System Controller; N: Not System Controller
Primary Bus Address (3,2) 00 to 30 : Two-digit decimal number
Secondary Bus Address (5,2) 00 to 31: Two-digit decimal number, or blank if no secondary address
Address Change (7,1) 0 : Address change has not occurred; 1: Address change has occured
Addressed State (9,1) T : Talker; L: Listener; I:Idle
ByteIn (10,1) 0 : No byte in; 1: Byte in
ByteOut (11,1) 0 : No byte out; 1: Byte out
Service Request (12,1) 0 : SRQ is not asserted.; 1: SRQ is asserted.
Error Code (14,3) nnn : Three-digit error code
Triggered (18,2) T0 : Trigger command not received; T1: Trigger command received
Cleared (21,2) C0 : Clear command not received; C1: Clear command received.
Transfer in Progress (24,2) P0 : No transfer in progress; P1: Transfer in progress
Error Message (27,x) Text of error message (x = variable text)