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New project for my HP50g

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cahlu...@gmail.com

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Jun 3, 2018, 1:11:20 PM6/3/18
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I am working on a new project for my HP50g calculator, and for that I need to know the address of the equation writer so that I can call it from my programs. Can someone give me this information? Thanks in advance!

DavidM

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Jun 3, 2018, 2:11:51 PM6/3/18
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On Sunday, June 3, 2018 at 1:11:20 PM UTC-4, cahlu...@gmail.com wrote:
> I am working on a new project for my HP50g calculator, and for that I need to know the address of the equation writer so that I can call it from my programs. Can someone give me this information? Thanks in advance!

If you know the expression that you want to start with, simply put that on the stack and execute EQW to activate the Equation Writer. If you want to start with no expression at all, -43.3 KEYEVAL is a relatively safe way of activating the Equation Writer from within programs. It works regardless of any user-assigned keys, and you don't run the risk of any addresses being different with various firmware revisions.

Hope this helps!

- David

cahlu...@gmail.com

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Jun 4, 2018, 4:32:05 PM6/4/18
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Op zondag 3 juni 2018 19:11:20 UTC+2 schreef cahlu...@gmail.com:
> I am working on a new project for my HP50g calculator, and for that I need to know the address of the equation writer so that I can call it from my programs. Can someone give me this information? Thanks in advance!

Thank you David, for your contribution! Yes, I think this can help. If you still find the address, I would appreciate it if you would report it.

DavidM

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Jun 4, 2018, 5:42:45 PM6/4/18
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Either of the following will activate the Equation Writer with no expression as the default on a v2.15 50g. Standard disclaimer applies: type these exactly as shown, or a system crash with loss of data may result.

#2F192h SYSEVAL
#339001h FLASHEVAL

The SYSEVAL version simply jumps to the same flash entry as the FLASHEVAL, so you may as well just use that one if you are using a v2.15 50g. If your firmware is older, stick with the SYSEVAL.

cahlu...@gmail.com

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Jun 6, 2018, 5:43:33 PM6/6/18
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Op zondag 3 juni 2018 19:11:20 UTC+2 schreef cahlu...@gmail.com:
> I am working on a new project for my HP50g calculator, and for that I need to know the address of the equation writer so that I can call it from my programs. Can someone give me this information? Thanks in advance!

Much appreciated, David! Sincerely, Karel.
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