Category
page 1X86 memory management
Spectre
security vulnerability in microprocessors performing branch prediction
Meltdown
vulnerability in modern microprocessors which permits unauthorized memory reads
Physical Address Extension
memory management feature
Extended memory
Section of computer memory in PC compatibles
Expanded memory
system of bank switching in DOS memory management
Conventional memory
first 640K of RAM under DOS

High memory area
65,520 byte memory area, beginning at 1 MiB, on x86 systems operating in real mode
A20 line
signal in the system bus of an x86-based computer system
x86 memory segmentation
the implementation of memory segmentation on the x86 architecture