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Re: Help with calling Interrupts in MS BASIC PDS 7.1

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R.Wieser has brought this to us :
> Leo,
>
>> 'Don't do anything as I am not interested in XMS
>
> That might be, but if you do it like that the 'Major' and 'Minor' variables
> will simply not be altered from what the select case.
>
> And that means you could get *any* result, including valid ones. :-o
>
> Most likely though those two variables will simply stay Zero, falsely
> indicating a 'CASE &H0' result. :-\
>
> In other words: You *must* set a result there.  Either set 'Major' and
> 'Minor' to some value indicating an error of sorts (both to 255 ?) or clear
> an error-flag befor the 'select case' and set it in there (and ofcourse test
> for it afterwards :-) ).
>
> Regards,
> Rudy Wieser
>
>
> -- Origional message
> Leo <ttdhead@gmail.com> schreef in berichtnieuws
> kjetmc$g9v$1@dont-email.me...
> <snip>
>> The below code was written in my newsreader so may not be exact and
>> plus I can't test for Windows/386 2.x since I don't have it.
>> So something like:
>> SELECT CASE outregs.ax AND 255
>> CASE &H80
>> 'Don't do anything as I am not interested in XMS
>> CASE &H0
>> Major = 0
>> Minor = 0
>> CASE &HFF, &H1
>> Major = 2
>> Minor = 0
>> CASE ELSE
>> Major = outregs.ax AND 255
>> Minor = outregs.ax / 256
>> END SELECT
>> 
>>> 
>>> Good ! :-)
>>> 
>>>> but wasn't completely understanding it.
>>> 
>>> You now do?   If not, don't hesitate to ask for clarification.
>> I understand it alot better now.
>> 
>>> Regards,
>>> Rudy Wieser

Thanks for all your help. I went with setting them to 255.

-- 
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Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-03-29 22:10 +1100
  Re: Help with calling Interrupts in MS BASIC PDS 7.1 "R.Wieser" <address@not.available> - 2013-03-29 15:00 +0100
    Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-03-30 03:10 +1100
      Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-03-30 03:14 +1100
        Re: Help with calling Interrupts in MS BASIC PDS 7.1 "R.Wieser" <address@not.available> - 2013-03-30 03:32 +0100
          Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-03-31 00:28 +1100
            Re: Help with calling Interrupts in MS BASIC PDS 7.1 "R.Wieser" <address@not.available> - 2013-03-30 16:06 +0100
              Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-04-02 22:07 +1100
                Re: Help with calling Interrupts in MS BASIC PDS 7.1 "R.Wieser" <address@not.available> - 2013-04-02 16:14 +0200
                Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-04-03 02:37 +1100
                Re: Help with calling Interrupts in MS BASIC PDS 7.1 "R.Wieser" <address@not.available> - 2013-04-02 23:41 +0200
                Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-04-03 09:39 +1100
                Re: Help with calling Interrupts in MS BASIC PDS 7.1 "R.Wieser" <address@not.available> - 2013-04-03 22:50 +0200
      Re: Help with calling Interrupts in MS BASIC PDS 7.1 Karl E. Peterson <karl@exmvps.org> - 2013-03-29 10:23 -0700
        Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-04-02 22:05 +1100
          Re: Help with calling Interrupts in MS BASIC PDS 7.1 Karl E. Peterson <karl@exmvps.org> - 2013-04-02 09:39 -0700
            Re: Help with calling Interrupts in MS BASIC PDS 7.1 Leo <ttdhead@gmail.com> - 2013-04-03 09:34 +1100

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