Javascript的GameBoy模拟器

迷茫之鹰

http://imrannazar.com/GameBoy-Emulation-in-JavaScript

This is part 1 of an article series on emulation development in JavaScript; ten parts are currently available, and others are expected to follow.

    Part 1: The CPU
    Part 2: Memory
    Part 3: GPU Timings
    Part 4: Graphics
    Part 5: Integration
    Part 6: Input
    Part 7: Sprites
    Part 8: Interrupts
    Part 9: Memory Banking
    Part 10: Timers

The emulator described in this series is available in source form: http://github.com/Two9A/jsGB

It's often stated that JavaScript is a special-purpose language, designed for use by web sites to enable dynamic interaction. However, JavaScript is a full object-oriented programming language, and is used in arenas besides the Web: the Widgets available for recent versions of Windows and Apple's Mac OS are implemented in JavaScript, as is the GUI for the Mozilla application suite.

With the recent introduction of the <canvas> tag to HTML, the question arises as to whether a JavaScript program is capable of emulating a system, much like desktop applications are available to emulate the Commodore 64, GameBoy Advance and other gaming consoles. The simplest way of checking whether this is viable is, of course, to write such an emulator in JavaScript.

This article sets out to implement the basis for a GameBoy emulation, by laying the groundwork for emulating each part of the physical machine. The starting point is the CPU.