asm code

[Edwin Rhodes]

hi sorry this is slightly off topic but i need some asm code to clear the screen in the linux kernel -- just after it says uncompressing linux. how would i implement this in assembler, that would compile under gas. thanks
edwin

ps. will you eventually implement all the standard bios calls so that other os's such as dos etc will run under open bios? or will it be just a bios for linux? 
thanks and good luck.

edwin

[James]

> hi sorry this is slightly off topic but i need some asm code to clear
> the screen in the linux kernel -- just after it says uncompressing
> linux. how would i implement this in assembler, that would compile
> under gas. thanks edwin

By the time it says "uncompressing linux" it is already in 32 bit mode C
code (inflate.c).  It is writing to the screen directly at memory address
0b8000.  To clear the screen, just zero 0b8000 - 0bfff0.
> ps. will you eventually implement all the standard bios calls so that
> other os's such as dos etc will run under open bios? or will it be
> just a bios for linux?  thanks and good luck.

I believe the goal is to get support for the 32 bit OSs that don't use the
BIOS, like WinNT, BeOS, Linux, BSD, and others (at least I think that is
the goal and I think those OSs don't use the BIOS).

- James

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[Ronald G. Minnich]

On Mon, 21 Feb 2000, Edwin Rhodes wrote:
> hi sorry this is slightly off topic but i need some asm code to clear
> the screen in the linux kernel -- just after it says uncompressing
> linux. how would i implement this in assembler, that would compile
> under gas. thanks

well, that message is printed from C code. So gas is not needed.
> ps. will you eventually implement all the standard bios calls so that
> other os's such as dos etc will run under open bios? or will it be
> just a bios for linux?

openbios is for lots of things. Linuxbios is for just linux. Although,
truth to tell, there's no reason it could not support, e.g., freebsd.

ron

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