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[HP48] Display area flags - Printable Version

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[HP48] Display area flags - Bruno - 12-12-2014 11:34 AM

Hi all,

I'm studying how display area control works, and there is too much words that seems to do the same and confuse me,
so anyone could explain the different DA flags behaviors please, and when to use them ?

What is the difference between the commands (Set/Clr/?)DAValid and (Set/Clr/?)DABad ?
Same question for DATemp and DANoCh flags ? (Ok Temp is used to freeze the display, but why DANoCh exist ?)

What is the purpose for each of this flags ?

DAs flags and associated commands :
OK : Clr, ?
Bad : Set, Clr, ?
Valid : Set, Clr, ?
Temp : Set, Clr, ?
NoCh : Set, Clr, ?
Roll : Set, Clr, ?


RE: [HP48] Display area flags - MNH - 12-14-2014 05:47 PM

Hello Bruno,

Look at https://groups.google.com/forum/#!searchin/comp.sys.hp48/da$20flags/comp.sys.hp48/QqAzSbsy4jw/xlzcv9yX3AMJ.



RE: [HP48] Display area flags - Han - 12-15-2014 09:47 PM

Check the rammap.a file within this archive:


There is some explanation on the actual flags themselves.

RE: [HP48] Display area flags - Bruno - 12-16-2014 08:31 AM

Ok, thanks for your help Han and Mark Smile