Addressing modes are an aspect of the instruction set architecture in most central processing unit (CPU) designs. The various addressing modes that are...

Real mode, also called real address mode, is an operating mode of all x86-compatible CPUs. The mode gets its name from the fact that addresses in real...

in MMX) registers. The x86 processor also includes complex addressing modes for addressing memory with an immediate offset, a register, a register with...

access to the entire memory. Contrary to its name, it is not a separate addressing mode that the x86 processors can operate in. It is used in the 80286 and...

64-bit mode, instructions are modified to support 64-bit operands and 64-bit addressing mode. The x86-64 architecture defines a compatibility mode that...

In computing, protected mode, also called protected virtual address mode, is an operational mode of x86-compatible central processing units (CPUs). It...

: 3-120  SIBMEM addressing. This addressing mode is used for instructions that perform a sequence of strided memory accesses. The effective address to use for...

in 64-bit mode, which is one of the two modes only available in long mode. The addressing modes were not dramatically changed from 32-bit mode, except that...

memory addressing paradigm in which "memory appears to the program as a single contiguous address space." The CPU can directly (and linearly) address all...

56 instructions with (possibly) multiple addressing modes. Depending on the instruction and addressing mode, the opcode may require zero, one or two additional...

two addressing modes supported by S/370-XA and ESA, a/Architecture has an extended addressing mode with 64-bit virtual addresses. The addressing mode is...

addressing mode. The base-plus-index and scale-plus-index forms of 32-bit addressing (encoded with r/m = 100 and mod ≠ 11) require another addressing...

Direct page addressing uses an 8-bit address, which results in faster access than when a 16- or 24-bit address is used. Also, some addressing modes that offer...

word versus byte addressing). Two groups of six bits specify the source operand addressing mode and the destination operand addressing mode, as defined above...

destination addressing mode and register. If field I = 0, designated register contains the address of the operand, the equivalent of addressing mode (Rn). If...

bits: n: Indirect addressing flag i: Immediate addressing flag x: Indexed addressing flag b: Base address-relative flag p: Program counter-relative flag...

original 6502, fixes several problems, and adds new instructions and addressing modes. The power usage is on the order of 10 to 20 times less than the original...

instruction types can use all addressing modes. It is "orthogonal" in the sense that the instruction type and the addressing mode may vary independently. An...

addressing require the SIB byte, which encodes 2-bit scale factor as well as 3-bit index and 3-bit base registers. Depending on the addressing mode,...

256 local addresses. The leading bit sequence 111 designated an at-the-time unspecified addressing mode ("escape to extended addressing mode"), which was...

24-bit-addressing and 31-bit-addressing code include two new register-register call/return instructions which also effect an addressing mode change,...

word addresses, giving an address space of 218 36-bit words, approximately 1 megabyte of storage), not byte addressing. The range of addressing of memory...

64-bit mode of x86-64 CPU, or the Physical Address Extension (PAE), a 36-bit addressing mode. In such a case, a device using DMA with a 32-bit address bus...

mode, while 32-bit programs and 16-bit protected mode programs are executed in a sub-mode called compatibility mode. Real mode or virtual 8086 mode programs...

Byte addressing in hardware architectures supports accessing individual bytes. Computers with byte addressing are sometimes called byte machines, in contrast...

another specifies the addressing mode. An orthogonal instruction set uniquely encodes all combinations of registers and addressing modes. In telecommunications...

of canvassers, are mostly addressed as Your Honor, because it was unfortunately rendered from "the Spanish term for addressing parliamentarians, and a mistake...

registers) and their semantics (such as the memory consistency and addressing modes), the instruction set (the set of machine instructions that comprises...

When the system transitions between user mode and kernel mode, a context switch is not necessary; a mode transition is not by itself a context switch...

instances (XA/370), the instruction address was 31 bits plus a mode bit (24 bit addressing mode if zero; 31 bit addressing mode if one) for a total of 32 bits...