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VESA 3.0
Posted: Sat Oct 11, 2003 11:00 pm
by VESA BIOS
Well I'm trying to use the VESA 3.0 in protected mode. I'm setting up all the selectors and I'm doing everything like they sayd in the VBE 3.0 spec but it still dasnt work
. My machine just resets. Did somebody work on VESA 3.0 in protected mode ? Please help me!
RE:VESA 3.0
Posted: Sat Oct 11, 2003 11:00 pm
by Xerroz
please post code for everyone to look at, lot easier to help you that way
RE:VESA 3.0
Posted: Sat Oct 11, 2003 11:00 pm
by Ares
Well my code is kind of big
. Its a kernel. I will write how do I call the initalization func from protected mode. Its a 16-bit code witch is an INT 50 called from 32-bit code:
[BITS 16]
_INT50:
Mov word [Gs:5121+(_INT49End - _INT49)+_Ss], Ss
Mov dword [Gs:5121+(_INT49End - _INT49)+_ESP], ESP
Mov Ss, word [Gs:5113]
Mov Sp, 1024
_CALL DB 9AH
OFFSET DW 0 ; OFFSET to the INITALIZATION func taken from the PMID block
SELEKTOR DW 0 ; The 16-bit code selector points to the VB
Mov Ss, word [Gs:5121+(_INT49End - _INT49)+_Ss]
Mov ESP, dword [Gs:5121+(_INT49End - _INT49)+_ESP]
IRETD
_Ss DW 0
_ESP DD 0
_INT50End: