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HP Forum Archive 13

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ugrade from 1.18 ->1.22?
Message #1 Posted by Gitte on 5 Nov 2003, 4:52 p.m.

I have my old hp49g(rom 1.18), and I want to upgrade to 1.22. Is that necessary? What will change? What is the difference between 49g and 49g+? Thanx! :)

      
Re: ugrade from 1.18 ->1.22?
Message #2 Posted by Raymond Del Tondo on 5 Nov 2003, 5:44 p.m.,
in response to message #1 by Gitte

I don't know if such an upgrade is even possible. Did you take a look at the feature list of the + ? The hardware is different, the configuration may be incompatible. Unless someone can state the opposite, I'd suggest to upgrade your 49G to ROM 1.96 or 1.97 (if available)

Raymond

            
Re: ugrade from 1.18 ->1.22?
Message #3 Posted by John on 5 Nov 2003, 9:21 p.m.,
in response to message #2 by Raymond Del Tondo

You cannot upgrade the 49G with 49G+ roms. The highest available for the 49G is the "unofficial" (but very stable) 1.19.6.

I have heard that there is a 1.19.7, but I have not seen it.

John

            
Re: ugrade from 1.18 ->1.22?
Message #4 Posted by Jordi Hidalgo on 6 Nov 2003, 12:02 p.m.,
in response to message #2 by Raymond Del Tondo

There were rumours the version 1.22 for the 49G could be (easily?) extracted from the 49g+ file. But would it be of any good? I don't think so.

Jordi

                  
Re: ugrade from 1.18 ->1.22?
Message #5 Posted by Raymond Del Tondo on 6 Nov 2003, 4:28 p.m.,
in response to message #4 by Jordi Hidalgo

IMHO you would have to patch the image in various places, since it uses some new opcodes (81Bx) which are not available in the 49G, and the compiled display offset constants are different, of course.

I don't think that it's worth the effort. People who can't live without a 49G-like calc should consider selling their 49G, and buy a 49G+. The 49G+ is better than the normal 49G in all and every aspect.

However, I'll stay with my 48GX, which is even better IMHO;-)

Raymond


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