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  2. INT (x86 instruction) - Wikipedia

    en.wikipedia.org/wiki/INT_(x86_instruction)

    INT is an assembly language instruction for x86 processors that generates a software interrupt. It takes the interrupt number formatted as a byte value. [1] When written in assembly language, the instruction is written like this: INT X. where X is the software interrupt that should be generated (0-255).

  3. PDP-11 architecture - Wikipedia

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

    The PDP-11 architecture [1] is a 16-bit CISC instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC). It is implemented by central processing units (CPUs) and microprocessors used in PDP-11 minicomputers.

  4. Little Computer 3 - Wikipedia

    en.wikipedia.org/wiki/Little_Computer_3

    Little Computer 3, or LC-3, is a type of computer educational programming language, an assembly language, which is a type of low-level programming language. It features a relatively simple instruction set, but can be used to write moderately complex assembly programs, and is a viable target for a C compiler .

  5. MIC-1 - Wikipedia

    en.wikipedia.org/wiki/MIC-1

    In contrast, the C bus can be enabled by more than 1 register at the same time; as a matter of fact, the current value present in the C bus can be written to more than 1 register without problems. The reading and writing operations are carried out in 1 clock cycle. The MBR register is a readonly register, and it contains 2 control lines.

  6. List of early microcomputers - Wikipedia

    en.wikipedia.org/wiki/List_of_early_microcomputers

    MicroSystems International CPS-1: MIL MF7114: 1973: Using a locally produced microprocessor based on the design of the Intel 4004. First built in 1972, a small number shipped in early 1973. [22] [23] Micral N: Intel 8008 [24] 1973: Awarded the title of "the first personal computer using a microprocessor" by a panel at the Computer History ...

  7. Netwide Assembler - Wikipedia

    en.wikipedia.org/wiki/Netwide_Assembler

    The Netwide Assembler (NASM) is an assembler and disassembler for the Intel x86 architecture. It can be used to write 16-bit, 32-bit and 64-bit programs.It is considered one of the most popular assemblers for Linux and x86 chips.

  8. Halt and Catch Fire (computing) - Wikipedia

    en.wikipedia.org/wiki/Halt_and_Catch_Fire...

    The Motorola 6800 microprocessor was the first for which an undocumented assembly mnemonic HCF became widely known. The operation codes (opcodes—the portions of the machine language instructions that specify an operation to be performed) hexadecimal 9D and DD were reported and given the unofficial mnemonic HCF in a December 1977 article by Gerry Wheeler in BYTE magazine on undocumented ...

  9. x86 instruction listings - Wikipedia

    en.wikipedia.org/wiki/X86_instruction_listings

    Load segment limit from the specified segment descriptor. Sets ZF=1 if the descriptor could be loaded, ZF=0 otherwise. [j] VERR r/m16: 0F 00 /4: Verify a segment for reading. Sets ZF=1 if segment can be read, ZF=0 otherwise. VERW r/m16: 0F 00 /5: Verify a segment for writing. Sets ZF=1 if segment can be written, ZF=0 otherwise. [k] LOADALL [l ...