Buck showed that a ferroelectric switch could be useful to perform memory addressing.

The problem with the MC68000 was that every manufacturer had their own system of memory addressing, which made portability a challenge for software add-on vendors.

This is a problem, because each guest has its own virtualized physical memory addressing.

Instructions locate operands with Register indexes (or names) and memory addressing modes.

Although several much larger systems were built, they were all limited by the physical memory addressing limitation of 64 GiB.

Large Address Awareness, a memory addressing mode in x86-64 processors.

The last six registers are used as register pairs for memory addressing.

Its memory addressing system can access 4 gigabytes of RAM.

This provided no more main memory addressing, but gave two sets of registers and instructions which flipped from one "program level" to the other.

For example, the 8088 processor only had a 20-bit memory addressing space.