VGA arbitration: API proposal

[Jon Smirl]

These are the two VGA address ranges

02B0-02DF	Alternate VGA Video Display Adaptor assignment (secondary address)
03B0-03DF	EGA / VGA Video Display Adaptor, (Primary address)

Not sure yet how to control which one a VGA card responds to

This is a standard VGA register
http://www.osdever.net/FreeVGA/vga/extreg.htm
it can disable the RAM response and move some of the IO

-- 
Jon Smirl
jonsmirl at gmail.com