[OpenBIOS] ASM/C and 16/32 bit questions.
David Woodhouse
Dave at imladris.demon.co.uk
Tue Feb 17 23:57:28 CET 1998
madman at zip.com.au said:
> This might be a really bad idea but let me know what you think anyway
> :) How about doing a really low level boot loader of some sort so if
> your booting linux it goes into 32bit protected mode early where as if
> you boot dos or win it loads into 16-bit mode with all the int's that
> are needed?
I don't think we'd gain much from the 32-bit stuff. It'd mean that we have
to provide both 16-bit and 32-bit versions of a number of functions, and who'd
ever use the 32-bit API?
Linux is always going to have to handle going into 32-bit mode itself, in case
it's booted from a standard BIOS. We'd have to write a whole new Linux boot
method to get it using the 32-bit BIOS API, and nobody else would ever use it.
I think we should stick to pretending to be a normal BIOS for now. We can try
adding extra stuff when it's working properly.
---- ---- ----
David Woodhouse, Robinson College, CB3 9AN, England. (+44) 0976 658355
Dave at imladris.demon.co.uk http://dwmw2.robinson.cam.ac.uk
finger pgp at dwmw2.robinson.cam.ac.uk for PGP key.
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