Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 280)

III. COMMAND REFERENCES - 14. Command Summaries 14A. Driver488/SUB, C Languages
Personal488 User’s Manual, Rev. 3.0 III-265
(DevHandles,SPResult,UntilFlag)
Status (IntfHandle,StatusVal) Return details of state of the driver
Stop (IntfHandle) Halt any asynchronous transfer that may be in
progress
SysController (IntfHandle,SysCont) Specify if interface is to be System Controller
Talk (IntfHandle,Prim,Sec) Send specified Talk Address
Term (Handle,TermP,TermType) Set terminators for interface or device
TimeOut (Handle, Timeout) Set time that must elapse before time out error
declared
Trigger (Handle) Issue Group Execute Trigger
TriggerList (DevHandles) Issue GET to devices in list
UnListen (IntfHandle) Send the Unlisten (UNL) command
UnTalk (IntfHandle) Send the Untalk (UNT) command
Wait (IntfHandle) Wait until asynchronous transfer has completed
The Commands
To obtain a more detailed description of the command references for Driver488/SUB, turn to Chapter
15 “Command References” in this Section. The commands are presented in alphabetical order for ease
of use.
Syntax Parameters
The symbol * (asterisk) refers to a Pointer.
Name Type Description
Argument void far * 32-bit argument
Async bool Flag to indicate async transfer
Bytes unsigned char * Pointer to characters to transfer
CompStat int * Completion status from Driver
Condition ArmCondT Arm/Disarm bit mask
Count long Long count specifier
Data char far * Pointer to a character array
DevHandle DevHandleT External device handle
DevHandles DevHandleT * Pointer to array of handles
Display bool Error message display is ON or OFF
DmaChan int Hardware DMA channel
ErrHandle DevHandleT * Pointer to handle that caused error
ErrText char * Pointer to error text
Flag bool ON or OFF specifier
ForceAddr bool Force address flag
Freq int Clock frequency
Handle DevHandleT Either a DevHandle or an IntfHandle
Handler UserHandlerFP Pointer to OnEvent Handler
IntLev int Hardware Interrupt level
IntfHandle DevHandleT Interface handle
Last bool Terminator on last byte indicator
Length int Number of Bytes
LightPen bool Light Pen emulation is ON or OFF
Limit short Max number of listeners
Listener unsigned short * Pointer to listener list
Message char * Pointer to character array
Monitor bool Data monitor ON or OFF
Name char * Pointer to name string
Ppresponse int Configuration byte