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  2. MOS Technology 6502 - Wikipedia

    en.wikipedia.org/wiki/MOS_Technology_6502

    The 6502 instruction set includes BRK (opcode $00), which is technically a software interrupt (similar in spirit to the SWI mnemonic of the Motorola 6800 and ARM processors). BRK is most often used to interrupt program execution and start a machine language monitor for testing and debugging during software development.

  3. Merlin (assembler) - Wikipedia

    en.wikipedia.org/wiki/Merlin_(assembler)

    Merlin is a MOS Technology 6502 macro assembler developed by mathematics professor Glen Bredon for the Apple II under DOS 3.3. It was published commercially by Southwestern Data Systems, [1] later known as Roger Wagner Publishing. Merlin continued to be updated as successors to the 6502 became available: first the 65C02 and later the 65816 and ...

  4. KIM-1 - Wikipedia

    en.wikipedia.org/wiki/KIM-1

    The KIM-1, short for Keyboard Input Monitor, is a small 6502-based single-board computer developed and produced by MOS Technology, Inc. and launched in 1976. It was very successful in that period, due to its low price (thanks to the inexpensive 6502 microprocessor) and easy-access expandability.

  5. GeckOS - Wikipedia

    en.wikipedia.org/wiki/GeckOS

    Free and open-source software portal; GeckOS is a multitasking operating system for MOS 6502, and compatible processors such as the MOS 6510. [1] The GeckOS operating system is one of the few successful attempts to implement a Unix-like operating system on the 6502 architecture.

  6. Comparison of assemblers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_assemblers

    MOS Technology 6502: Linux, Windows, macOS: SynAssembler Synapse Software: No Proprietary: MOS Technology 6502: Atari 8-bit: VASM: Volker Barthelmann, Frank Wille No Free MOS Technology 6502: various xa65: Cameron Kaiser, André Fachat Yes GPL MOS Technology 6502, WDC 65C02, WDC 65C816: Linux, various XASM: Piotr Fusik Yes Free MOS Technology ...

  7. Interrupts in 65xx processors - Wikipedia

    en.wikipedia.org/wiki/Interrupts_in_65xx_processors

    The methods by which the MPU state is preserved and restored within an ISR will vary with the different versions of the 65xx family. For NMOS processors (e.g., 6502, 6510, 8502, etc.), there can be only one method by which the accumulator and index registers are preserved, as only the accumulator can be pushed to and pulled from the stack. [5]

  8. VisiCalc - Wikipedia

    en.wikipedia.org/wiki/VisiCalc

    VisiCalc ("visible calculator") [1] is the first spreadsheet computer program for personal computers, [2] originally released for the Apple II by VisiCorp on October 17, 1979. [1] [3] It is considered the killer application for the Apple II, [4] turning the microcomputer from a hobby for computer enthusiasts into a serious business tool, and then prompting IBM to introduce the IBM PC two years ...

  9. Georgia Institute of Technology - School of Electrical and ...

    en.wikipedia.org/wiki/Georgia_Institute_of...

    ece.gatech.edu The School of Electrical and Computer Engineering (ECE) at the Georgia Institute of Technology , is an academic institution specializing in electrical and computer engineering education, research, and innovation.