Posted by Eugene Teo on 1999-04-18
>1 things: when talking about gfx programming on such a low level, please >always mention wich mode you use! I can see in this very case from the >code that you're using mode 13 (more on this later) but this is not >always very clear. yes i am talking about mode 13h. i apologise for not making things clear and i have missed that point out. >one thing you could do to fasten things up, was doing this whole stuff >in ASM, should be no big deal, if you need help, contact me. i am now trying to do it in nasm. most probably i will formally do it in another 2 weeks. reason is that i am now preparing for my exams which is just 10 days away =) >Re: mode13 >I always hardly can stop whining, when I see someone using it. Although >it is very easy to code (it is a 2 dim array at 0a000:0000, that's all >you need to know), it uses 4 times the gfx memory for the same data than >mode X does. since mode13 really wastes the video ram, you cannot have >more than one page in the 256 k of a standard vga card. if you use >modeX, it may be a bit hard to put/set pixels, but you have 4 pages, >which can be independently drawn and shown, i.e. you draw the picture on the 2nd page and when you're finished you simply show the 2nd page after >the next retrace. This is also good for your speed, since the pic will >not flicker anymore. i heard of mode X and mode y but i haven't reallie go and read a lot but will do so after my exams =) then i will paster and PASTER you =) thanks for your guidance weasels =)
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