Graphic mode under gcc

[Jean-Baptiste CAMPESATO]

Hello,
I used GCC under Linux.
I want to change the graphic mode to write directly in the video memory.
I wrote that :
void setmode(unsigned int mode)
{
if (mode == 1)
{
__asm__("movl $0x13, %eax");
}
else
{
__asm__("movl $0x03, %eax");
}
__asm__("int $0x10");
}

I've a segfault at the "int instruction".

Thanks

 

[Peter Nilsson]

Hello,
I used GCC under Linux.
I want to change the graphic mode to write directly in the video
memory. ...

ISO C only defines the core language, leaving tasks like yours
as implementation extensions. Because comp.lang.c only deals
with ISO C, your question is off-topic.

Please ask your question in a linux developers group.

 

[Ulrich Eckhardt]

I used GCC under Linux.
I want to change the graphic mode to write directly in the video memory.

You cannot write to video memory directly in any decent OS. There are APIs
(the Linux framebuffer API, vgalib, SDL) that more or less do the same,
but those are not on topic here.

Uli

 

[Jean-Baptiste CAMPESATO]

Le Sat, 12 Mar 2005 01:58:58 -0800, Peter Nilsson a écrit :

nly defines the core language, leaving tasks like yours
as implementation extensions. Because comp.lang.c only deals
with ISO C, your question is off-topic.

Please ask your question in a linux developers group.

Scuse me...

 

[Mac]

ISO C only defines the core language, leaving tasks like yours
as implementation extensions. Because comp.lang.c only deals
with ISO C, your question is off-topic.

Please ask your question in a linux developers group.

^^^^^^^^
That's funny. I reread the orignal post very carefully, and I saw no
question. Just a series of statements.

;-)

--Mac