Re: [Freedos-devel] KEYB BUG

[Aitor S. <ait...@gm...>]

Thank you Tom!!

I've set this bug to my list of to-do's, and will go to the next version.

Aitor


2012-06-25 13:24 GMT+02:00 Tom Ehlert <te...@dr...>:

>
> >    KEYB.EXE 11,446 06-24-12
>
> > leaves, when running, a huge memory hole. at least with only HIMEM
> > loaded. note the HUGE memory hole behind KEYB
>
> the problem is
>
> function MCBAlloc ( para: word ) : word;
> var allocs,f,m: word;
>
>         mov     ah, $58          { set alloc strategy }
>         mov     al, 1
>         xor     bh,bh
> >>>     mov     bl, $41
>         int     $21
>
> using 'best fit' is virtually ALWAYS a bug for a TSR
>
> solution 1) use some buffer in the program, at the end of the TSR
> code. use/resize this buffer as needed
>
> solution 2) use
>       mov     bl, $82   last fit, try high then low memory
>
> this allocates memory from top, but doesn't create holes.
>
> unfortunately I'm not able to compile this; awaiting the  maintainer
> to fix this bug
>
> Tom
>
>
>
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