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HP Forum Archive 21

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CLUTILS for XROM #31 YFNS instead of YFNZ?
Message #1 Posted by Kerem Kapkin (Silicon Valley, CA) on 4 June 2012, 9:42 p.m.

Is there anyway to modify the CLUTIL to work with XROM #31 YFNS instead of XROM #15 YFNZ? One of my 41CL is running firmware 3A and YFNS 3A was patched to work around some minor bug, therefore I have to Plug YFNS-3A(patched) which won't work with several commands on CLUTILS. I don't think I can patch YFNZ-3A the way I did YFNS-3A.

Thanks, Kerem

      
Re: CLUTILS for XROM #31 YFNS instead of YFNZ?
Message #2 Posted by Ángel Martin on 5 June 2012, 8:10 a.m.,
in response to message #1 by Kerem Kapkin (Silicon Valley, CA)

Hi Kerem, - unfortunately not, too many dependencies and expected XROM values for the function launchers.

However you can patch your YFNZ so that its XROM # is also 15 - that'll solve the issue.

Cheers, ÁM

            
Re: CLUTILS for XROM #31 YFNS instead of YFNZ?
Message #3 Posted by John Abbott (S. Africa) on 5 June 2012, 8:55 a.m.,
in response to message #2 by Ángel Martin

Hi Angel,

Quote:
However you can patch your YFNZ so that its XROM # is also 15 - that'll solve the issue.

I think you meant to say YFNS, as YFNZ is in the protected area of Flash.
Regards
John
            
Re: CLUTILS for XROM #31 YFNS instead of YFNZ?
Message #4 Posted by Kerem Kapkin (Silicon Valley, CA) on 5 June 2012, 12:40 p.m.,
in response to message #2 by Ángel Martin

Hi Angel,

I know that version 3A allows to write to OS area which can also brick the calculator. So I wasn't sure if I should attempt this. I assume this process would be how to do it? 

1- Clear Memory
2- MMUCLR
3- "YFNS" PLUG1L (Since I will write over YFNZ, I should use YFNS)
4- MMUEN
5- "007>80C" YMCPY
6- Patch using YPOKE
7- "80C>007" YFWR (Save the patched YFNZ back to its original location)
8- "YFNZ" PLUG1L

This is similar but modified for YFNZ of what I have done to patch YFNS, do you see any problem with this flow? I really want to use the CLUTILS with this 41CL but afraid of bricking it.
Thanks, Kerem
                  
Re: CLUTILS for XROM #31 YFNS instead of YFNZ?
Message #5 Posted by Monte Dalrymple on 5 June 2012, 1:43 p.m.,
in response to message #4 by Kerem Kapkin (Silicon Valley, CA)

Hi Kerem,

This is not the correct procedure to use. Check your email.

Monte

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