Re: Q2: Framebuffer?

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 19 Feb 1999 10:18:20 +0000 (GMT)

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> >And technically, it's possible to do so afterwards. There have been block
> >device drivers which switch to vm86 mode and call INT 13h, and it should be
> >possible to treat INT 10h in a similar fashion, depending on how well-behaved
> >the BIOS code is.

Not very in general. If you run bios code in DOSemu it tends to play with
the PC 8259 interrupt controller a lot ad sometimes the timers. Not stuff
Linux can afford to permit.

The BIOS hd driver only worked for a few cases. Its only really alive and well
in the Linux 8086 tree where its not a problem calling bios functions

Alan

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