VGA Hardware: Difference between revisions
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some info regarding PCI boards
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All registers are accessed as 8 bit. The parts of a register that are not used should officially be preserved, although a lot of programs simply set them to zero. However, not all fields present in the VGA are documented here, so you will either look up a different reference, or preserve the undocumented fields.
In the documentation below, a port number and possibly an index is provided. The port is usually the base port for indexed registers, or the actual port for single registers.
Note that [[PCI]] boards do *not* report the VGA addresses in their configuration space, and that the addresses can not be remapped.
=== Port 0x3C0 ===
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