Refactor vga driver #688
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Refactor vga driver #688
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Setting a custom font in text mode will copy the font to a static variable in the VGA driver to be able to restore it when going back from graphics to text mode later instead of having to set it again manually. |
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We can now read and write the VGA mode from userspace:
Everything that's needed from screen clearing to backup and restoring of font and palette when switching mode is being taken care of by the driver. |
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We can now write to the VGA buffer at The last commit is breaking the device number given to the VGA font device from #653 necessitating to run |
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vgacommandblankcommand to blank screen/dev/vga/bufferto write the VGA buffer/dev/vga/modedevice file to change mode/dev/vga/palettedevice file to read or write the color paletteThe
vgacommand was obsolete and is now removed. Theblankcommand was added as a basic screensaver and to have two different commands using the VGA driver in 320x200 mode to see how to organize the driver.