email: tvignatti (at) gmail com
Facebook: http://www.facebook.com/tiago.vignatti
github: https://github.com/tiagovignatti
IRC: irc.freenode.org, nickname “vignatti” (not anymore!)
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email: tvignatti (at) gmail com
Facebook: http://www.facebook.com/tiago.vignatti
github: https://github.com/tiagovignatti
IRC: irc.freenode.org, nickname “vignatti” (not anymore!)
My web page illustrates initializing a secondary PCI video adapter to MDA mode for a debugging monitor in real mode under MSDOS.
My method is hardware dependent so I have had to write versions for specific motherboard chip sets so as to be able to write to C000:0000 for initializing the secondary video card.
I noticed that Edubuntu 10.10 has a device called vga_arbiter. I am guessing that you have solved the problem that I solved in a more general way, so am eager to learn of the assembly language API for vga_arbiter so that I can initialize that secondary PCI card to MDA memory and IO addresses so that my debugger in a DOS emulator under Ubuntu, can write directly to the MDA frame buffer at B000:0000 and store and update the cursor position in the standard MDA register for this.
I have also installed C3SL’s mdm. When will this also start using your vga_arbiter?
Regards,
Lawrence E. Boothby, Portland, Oregon, USA