Memory Type Range Registers

<architecture, video> (MTRR) Registers in the Pentium Pro and Pentium II processors that can be used to specify a strategy for communication with the external memory and caches for a number of physical address ranges.

Strategies include write-through, write-back, or uncached(?). Such control is useful where the memory is located on a device and is accessed via some kind of device bus, e.g. a PCI or AGP graphics card, where caching would be of no benefit.

Last updated: 1999-07-02

Try this search on Wikipedia, OneLook, Google

Nearby terms:

memory mapped I/O « memory protection « memory smash « Memory Type Range Registers » MEMS » Mentat » MENTOR