|Re: HP82240A vs HP82240B IR |
Message #4 Posted by Vieira, Luiz C. (Brazil) on 19 Apr 2004, 11:44 p.m.,
in response to message #2 by Eduardo
there is a [OLDPRT] command available in the HP48 that allows you to use the A-type. The calculator remaps the character (if applicable) so you can use the A-series without any problems. (...) O.K., yeap! Let's go further.
The HP82240A uses the Roman8 character set, while the HP82440B allows you to choose between the Roman8 and ECMA94. If you are using the HP28S or any other Pioneer with IR output (HP42S, HP27S... I'm not sure about the HP18C, 17B, 17BII, 19B and 19BII), the B-series will work fine if you're not use the upper character set (ECMA94 is the default for the B-series).
The HP82440B was introduced later and the new character set (ECMA94) fully supports the HP48 character set. As you may have noticed, if you print a string from an HP48 to an HP82240A containing characters with codes above 128 (decimal), some printed characters do not match those in the LCD. If you execute OLDPRT prior to printing, almost all of them will match (only a few exceptions will not print). If you want to use an HP82240B after that, you should purge the exisitng PRTPAR variable. This variable contains the remapping string and if you do not purge it before using a B-series, then you'll have the same problem: no WYSIWYG effect!
The weirdest thing of all is that the HP49G (not G+) O.S. version 1.19-6 offers OLDPRT, and it indeed creates a PRTPAR with the remapping string. Well, the HP49G has no IR output, so the only meaningfull use for OLDPRT would be "printing" to a file, transfer it to an HP48 and print the file directly to an HP82240A or an HP82240B set to Roman8. As I don't own an HP49G+ (at least so far...), I guess that it may also have a "hidden" OLDPRT command that will allow the use of an HP82240A. Anyone trying it out?
Other differences are related to power consumption and extra space between text lines.
Hope this gives you a glimpse. If I miss something or added a wrong infromation, please forgive me. Again, I wrote by heart...
Edited: 20 Apr 2004, 12:24 a.m.