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You can use the L.[J5 program to log data continuously under the control of a setup file. The setup file
must be created using the SETLIF program (refer to section 9) before the |.II5 program is run.
The L.{IL: program, driven by the setup file, builds an interrupt-driven event scheduler using the system
timers in the HP-71. One timer is used for a "midnight correction"; a second timer is used to count down
to the next event. A "pending event list" indicates which groups need to be serviced at any given time.
The order for execution for the L.[I5 program is as follows:
e Prompts for the setup file to be used.
¢ Finds and reads the instrument specified by the setup file.
Creates RAM files as needed to buffer readings going to mass storage.
Builds the "pending event list" from all groups which start immediately.
Starts the midnight correction timer.
Starts the countdown duration for the next non-immediate scheduled event.
e Begins servicing pending events.
When a pending event comes due, the following actions occur:
oe Completes the scan as specified.
eo Decrements the scan counter for the group.
e Calls conversion routines as needed.
Performs limit tests and actions as needed.
Stores the data as specified.
The program will run as long as there is at least one active group with at least one scan remaining to
execute. If all groups become inactive, the program will end regardless of the number of scans remaining.
10-1
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