Mail Archives: djgpp/1996/08/23/05:50:29
Bill Currie <bill_currie AT MAIL DOT TAIT DOT CO DOT NZ> wrote:
>For those who are interrested, I am (off and on) working on that myself. The
>boot sector is written using djasm (modified but the mods will be available in
>djgpp 2.01) that boots up a djgpp compiled coff image. The only special
>requirements of the coff file is no standard io routines (ie stdio, io, unistd
>etc are illegal unless you rewrite libc).
>If anyone is interrested, I can past them my code. It's mostly complete, just
>untested, but very well commented.
Ahahahaha! That sounds interesting! What kind of protected mode
environment do you create? My current aim is to create linear
addresses as far into the address space as they'll go, IE use 0xB80000
for text mode VRAM... but beyond that address space is mappable
virtual RAM, which my subtasks will use be being allocated segment
descriptors to bring their chunk of RAM to 0x00000000... so only the
'kernel' gets the real linear address bit.
Anyway, I'd be delighted to see your code, esp. this modified djasm! I
was stumped by the apparent lack of lgdt!
Regards,
ABW
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