HP Forum Archive 01

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HP-71B HP-IL question Message #1 Posted by Jeff on 10 June 1999, 6:45 a.m. When I use ASSIGN IO "DD", I seem to have a problem afterwards where the Printer will now not print and its strange that the HP-71B turns on and enters Basic mode much faster. Is there some system flag that needs to be reset? Do I have to do another ASSIGN IO with the printer? I have looked through the ref. manual and do not see any system flags that could be reset. I have to do a INIT 3 reset to make the unit funtion properly. Any suggestions?

Re: HP-71B HP-IL question Message #2 Posted by Reinhard Hawel on 10 June 1999, 6:07 p.m., in response to message #1 by Jeff When you do "ASSIGN IO" the 71 remembers the addresses of the units, it does not have to search for any device IDs, Accessory IDs, ... Does the printer print if you assign it with i.e. "PRINTER is :PRINTER" afterwards? Remember: all the PRINTER IS, DISPLAY IS statemennts are null and void after ASSIGN IO. There are no flags associated with ASSIGN IO. You can remove the settings, if you enter "ASSIGN IO '*' " or "ASSIGN IO * " or "ASSIGN IO ' ' " Please remember, if you change the structure of the loop, you need to do a new assign IO. Try LIST IO to check if the first unit on the loop is the printer. Would be interesting what printer you're using and the structure of the loop, together with your LIST IO output. Anyway, there are better methods assigning printers or using IL-devices than ASSIGN IO. This command is an artifact taken over from the HP-75. Maybe you should try some other methods. There were some errors in the 1A version of the IL-module. maybe this is such a problem. I'll have to find the list (it must be here somewhere).

Re: HP-71B HP-IL question Message #3 Posted by jeff on 10 June 1999, 9:29 p.m., in response to message #2 by Reinhard Hawel Thanks Reinhard!

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