Laurens Holst wrote:
>
> > > By the way, IF you (Jon) are going to update the IDE disk variable area,
> > > best do it good. It won't be compatible anyway, so I think it's a good
> idea
> > > to use OFFSET +4 +5 +6 +7 (for example) for the 32-bit disk size instead
> of
> > > OFFSET +4 +5 and +8 +9...
> >
> > by making the order '+4 +5 and +8 +9' like you say, you can keep it
> > compatible with current bios1.x and 2.x utilities which use the IDE
> > system variables. I can't see any advantage of using the normal order
> > '+4 +5 +6 +7'. I almost all cases you use the IX/IY registers for
> > reading the variables, so the actual offsetorder doesn't matter...
>
> It will only be compatible with the older BIOSes for the A: drive. The rest
no, it is not. You shall use the getaddressentry to obtain the start of
each drivesection. You don't have to do the multiplication yourself.
> has to be calculated by multiplying the drive with 16 instead of 8, so if
> you read the DIB of drive B:, one way or another, it will always give the
> incorrect result if you use an older BIOS.
Greetinx,
Jon
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