On 8/2/06, Patrick McNamara <[EMAIL PROTECTED]> wrote:
True, but can we pass it on to the DAC from the video controller, or do we 
seperate the sync settings, preferrably including polarity, from the video 
controller and make it a config register for the DAC that is set at mode switch 
time?  The function call that compiles and uploads the video controller program 
is also responsible for setting the sync mode register.


Purely as a matter of convenience in decoding internal addresses, we
typically put different functional units in different segments of the
address space.  Typically, external devices are programmed via a
common bus, and that bus would get its own segment of the address
space.
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