VGA driver reference

Question

Where can i find information on writing a vga driver? The target platform is pic24 and i'm using c.

I sorted out the timing, but the implementation on how to display the data is a questionmark for me.

Answer 1

Back in the early 90's the definitive reference was Richard Ferraro's Programmer's Guide to the EGA, VGA, and Super VGA Cards. The book has very detailed information regarding the card registers, with it you could program even non-standard display modes such as ModeX (320-240x256-4pages) and its derivatives. (there's no reference to such modes, at least in the edition I own, but you can play with the registers and come up with interesting, custom display modes). Hope this helps.

Answer 2

Please see http://www.pyroelectro.com/projects/vga_test_box/software.html for more details and http://www.pyroelectro.com/projects/vga_test_box/software/vga-test.asm has the source code listing ...the project is based on PIC18 hope u can change it for PIC24...it displays triangle, square, circle to a VGA display.