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bogdanontanu



Joined: 07 Jan 2004
Posts: 403
Location: Sol. Earth. Europe. Romania. Bucuresti
bogdanontanu
@joachim_neu

I do not think that requesting VBE2 is a problem. I have seen boards that reported only VESA 1.2 and hence did not work with VBE2 string request. But if you do not target that kind of boards I see no problems.

The DS setup might be a problem if the VESA implementation assumes otherwise, but honestly the error could be in other parts of your code Wink you will just have to test and find out.

I mean you know that you are not doing something conceptually wrong, since other code that does exactly the same concept works ok. It is just that you have a mistake somewhere or you assume someting wrong... but you will have to find out what yourself... unless we really dig your code we can only guess...

BTW i have been working in Munich for some time so "Ciao" Razz
Post 29 Jan 2005, 22:52
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joachim_neu



Joined: 22 Dec 2003
Posts: 139
joachim_neu
@bogdanontanu: thank you. about the VBE2: well, but as you know ASHLEY4's code works, so it's not because of the VBE2 i think. maybe i shall code everything new, so some runtimemisstakes which came from doing this thinking-while-coding and not the think-then-code. we'll see.
Post 29 Jan 2005, 23:20
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Octavio



Joined: 21 Jun 2003
Posts: 366
Location: Spain
Octavio
bochs is not a debuger ,is not designed for os development and the emulation is not perfect. Some people has programs that run on emulators
but not on real computers others like me have the inverse problem.
a debuger allows you to execute one instruction by one to see what is going wrong.
i understand that you are a beginner but i can understand why you write
Code:
xor si,si 
mov cx,0x14 
rep lodsw 
lodsd 
    

instead of
Code:
mov eax,[0x28]
    
Post 30 Jan 2005, 02:44
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bogdanontanu



Joined: 07 Jan 2004
Posts: 403
Location: Sol. Earth. Europe. Romania. Bucuresti
bogdanontanu
maybe he has a twisted way of thinking Very Happy
Post 30 Jan 2005, 04:01
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joachim_neu



Joined: 22 Dec 2003
Posts: 139
joachim_neu
@octavio: it's possible in bochs to execute one step after the other! tell me an other debugger which is free.
@bogdanontanu&octavio: it's because after that si is at the right area to continue with the other instructions. but now i only added 0x28 to si to load the adresse, so i've both...
Post 30 Jan 2005, 14:28
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Octavio



Joined: 21 Jun 2003
Posts: 366
Location: Spain
Octavio
Post 30 Jan 2005, 20:40
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