>On 2001-07-29 22:13:28, Anonymous wrote:
>>On 2001-07-29 20:38:37, J. Weeks wrote:
>>>On 2001-07-29 17:57:09, mudi wrote:
>>>I tried to develop a vbe3.0 driver for my "os",but failed hopelesly !!!
>>>When I call the 'pminitialize' it never comes back !!!
>>>Anybody has successed ? (I have a Diamond Viper 770)
>>>Anyway,Shall I care about vbe or forget about it,it seems to me that it is a little abandoned !!
>>>Any help is welcome !!!
>>
>>Personally, dude, I'd forget about it. Very few
>>cards support vbe 2.0, let alone 3.0 (what's added
>>in 3.0, anyway? 3D support?)
>>
>>I'd support vbe1.2 as a fallback if you don't have
>>the correct chipset support ('cuz a lot of cards
>>support(ed?) the vbe1.2 interface.
>>
>>I'd also be inclined to support vbe 2.0, 'cuz it's
>>infinitely better than 1.2, and there are still some
>>cards that support it... but I think 3.0 is a lost
>>cause.
>>
>>Just my opinion
>>
>>J. Weeks
>
>Hi J.Weeks
>
>You mean the new cards(like GeForce2 and others)do not support vbe3.0 ???
>Consider that I do not want my os to run on ANY low level machine,
>but most people do(don't know why wasting on TOO backward compability??)
>The biggest problem is with vbe1.2 and 2.0 is that you CANNOT switch
>videomode in pmode,only at boot-time when in real mode,
>and switching back to real-mode and such thigs are
>ugly tricks(in my opinion) that should be avoided.
>Am I right ?
>
>Anyway,If there is no other way all I can do is to create
>a simple VGA driver,but i have looked at the HW docs and
>seems to be a big pain (even for those 320*256 pathetic pixels) !
>
>I still hope !
>
>
>
Why are you worried about switching back into
real mode? As far as I'm concerned, stay in
real mode from the start. Real men manage their
own memory.
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