Lines Matching refs:it

22    0 is what the CPU sees when it drives zeroes on the memory bus.
51 So when the CPU wants any bus master to write to physical memory 0, it 
117 you can't use it from the bus master. 
120 address in some cases, it's just not very often in normal code.  The physical
124 management layer doesn't know about devices outside the CPU, so it
132 of a video graphics card it can be normal DRAM that is just used for a frame
136 whatever, and there is only one way to access it: the readb/writeb and
138 there is really nothing you can do with such an address: it's not
140 just dereference a pointer. (Sadly, on x86 it _is_ in the same memory space,
141 so on x86 it actually works to just deference a pointer, but it's not
156 	 * size 1MB, so that we can access it: We can directly
183 didn't think straight when I wrote it originally.  People who have to
195 And the above sounds worse than it really is.  Most real drivers really