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  2. Instruction set architecture - Wikipedia

    en.wikipedia.org/wiki/Instruction_set_architecture

    Some instructions give one or both operands implicitly, such as by being stored on top of the stack or in an implicit register. If some of the operands are given implicitly, fewer operands need be specified in the instruction. When a "destination operand" explicitly specifies the destination, an additional operand must be supplied.

  3. Orthogonal instruction set - Wikipedia

    en.wikipedia.org/wiki/Orthogonal_instruction_set

    Instructions included an address for the operand. For instance, an ADD address instruction would cause the CPU to retrieve the number in memory found at that address and then add it to the value already in the accumulator. This very simple example ISA has a "one-address format" because each instruction includes the address of the data. [4]

  4. Comparison of instruction set architectures - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_instruction...

    The number of operands is one of the factors that may give an indication about the performance of the instruction set. A three-operand architecture (2-in, 1-out) will allow A := B + C to be computed in one instruction ADD B, C, A A two-operand architecture (1-in, 1-in-and-out) will allow A := A + B to be computed in one instruction ADD B, A

  5. Common operator notation - Wikipedia

    en.wikipedia.org/wiki/Common_operator_notation

    The operator precedence is a number (from high to low or vice versa) that defines which operator takes an operand that is surrounded by two operators of different precedence (or priority). Multiplication normally has higher precedence than addition, [1] for example, so 3+4×5 = 3+(4×5) ≠ (3+4)×5.

  6. PDP-11 architecture - Wikipedia

    en.wikipedia.org/wiki/PDP-11_architecture

    A branch instruction is typically preceded by a two-operand CMP (compare) or BIT (bit test) or a one-operand TST (test) instruction. Arithmetic and logic instructions also set the condition codes. In contrast to Intel processors in the x86 architecture , MOV instructions set them too, so a branch instruction could be used to branch depending on ...

  7. Assignment (computer science) - Wikipedia

    en.wikipedia.org/wiki/Assignment_(computer_science)

    For example, one such method that would give the class it appears in the same behavior as the return value of f() above would be void Deconstruct ( out string a , out int b ) { a = "foo" ; b = 1 ; } In C and C++, the comma operator is similar to parallel assignment in allowing multiple assignments to occur within a single statement, writing a ...

  8. Instruction pipelining - Wikipedia

    en.wikipedia.org/wiki/Instruction_pipelining

    In computer engineering, instruction pipelining is a technique for implementing instruction-level parallelism within a single processor. Pipelining attempts to keep every part of the processor busy with some instruction by dividing incoming instructions into a series of sequential steps (the eponymous "pipeline") performed by different processor units with different parts of instructions ...

  9. Compressed instruction set - Wikipedia

    en.wikipedia.org/wiki/Compressed_instruction_set

    The resulting instruction set has real-world limitations; for instance, it can only perform two-operand math of the form A = A + B, whereas most processors of the era used the three-operand format, A = B + C. By removing one operand, four bits are removed from the instruction (there are 16 registers, needing 4 bits), although this is at the ...