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???
02/06/06 08:18
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#109277 - VGA timing
Responding to: ???'s previous message
google for "VESA VGA timing"

However, a plain 8051 without any external "help" is not capable of the pixel rate the VGA requires. Note that the horizontal frequencies are in the range of 30kHz and higher, so to produce something like 200 "dots" horizontally (which is most probably not enough for what you want) you are in the range of >6MHz (there is some time neeed for the retrace/sync, so count up +20% for it), well beyond anything a '51 (even the faster derivatives) can produce as an output...

JW


List of 33 messages in thread
TopicAuthorDate
Using a 74HC245 to drive NTSC or VGA            01/01/70 00:00      
   I hope you know what you're getting into            01/01/70 00:00      
      Reply to LCD to "Video" post            01/01/70 00:00      
         Respectfully and humbly            01/01/70 00:00      
            '245            01/01/70 00:00      
            Maybe there's some info missing ...            01/01/70 00:00      
               To clear all this up            01/01/70 00:00      
               Windows GUI and my apology            01/01/70 00:00      
                  You'll need a few parts ...            01/01/70 00:00      
                     Programming and the such            01/01/70 00:00      
                        It's not going to be easy ...            01/01/70 00:00      
                        8051 to ISA Video Card.            01/01/70 00:00      
         do you even need video?            01/01/70 00:00      
         Mini-ITX            01/01/70 00:00      
            Nano-ITX            01/01/70 00:00      
      VGA timing            01/01/70 00:00      
         VGA timing            01/01/70 00:00      
   video driver hardware            01/01/70 00:00      
      not only video generation            01/01/70 00:00      
      Your post            01/01/70 00:00      
   ooops what am i thinking            01/01/70 00:00      
   Info Request.            01/01/70 00:00      
      lemme understand this correctly            01/01/70 00:00      
         Modifications to vga driver            01/01/70 00:00      
   Here's the datasheet ...            01/01/70 00:00      
   Re: LCD Upgrade            01/01/70 00:00      
      nice, but why            01/01/70 00:00      
      Looks Great!            01/01/70 00:00      
         it's because...            01/01/70 00:00      
      20 pin package controller            01/01/70 00:00      
         which post? ehich device?            01/01/70 00:00      
         What he means is ...            01/01/70 00:00      
         Re: 20-pin DIP controller            01/01/70 00:00      

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