contacts
email: tvignatti (at) gmail com
facebook: http://www.facebook.com/tiago.vignatti
IRC: irc.freenode.org, nickname “vignatti”
Tiago Vignatti
my blog
Hi…
...my name is Tiago Vignatti. I'm a computer scientist and technologist -- meaning I wake up every day around noon and spend the afternoon in the laboratory, developing Linux. I've been hacking all sort of open source graphics components for a range of cute devices.
I hope you'll find this site interesting. I can be reached here. You can see more about me here. Have fun!
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Recent Posts
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- the damn small Wayland API
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- X Census (for 1.10)
- X.Org Foundation elections
- late Christmas gift: freedesktop’s Xorg for MeeGo
- X Census (for 1.9)
- Xorg server 1.9 minimal
- Linux Graphics for Small Devices at FISL
- Attracting reviewers in your patch series
- adopt a child and make multi-card work on Linux
- Toolkit, please: Xlib -> XCB
- Scrutinizing X memory, part 2: what’s taking all that memory?
- Scrutinizing X Memory, part 1: overview
- Customization and true modularization of Xorg
- New blog interface
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Tags
arbiter developer development embedded event finland firewall footprint fun gdb sucks google GUI hack helsinki input Intel kernel linux maemo master course university suck meego memory mouse multiseat n900 nat nokia p2p pci rac server SoC2008 thread traversing ugly vga vga, arbiter, xorg, xserver, x11 vignatti wayland x x11 xcb xorg xserver zanoniBooks I’ve been reading
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November 13, 2010 at 12:37 am |
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