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Tricky68k
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Motorola 68000 simulator for Mac OS X
Download README (.md)
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Tricky68k
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# Tricky68k ### [Download Here!](https://github.com/shysaur/Tricky68k/releases) Tricky68k is a Motorola 68000 simulator for macOS, based on Volker Barthelmann's [VASM](http://sun.hasenbraten.de/vasm/) assembler, the [GNU binutils](http://www.gnu.org/software/binutils/) package, Karl Stenerud's [Musashi](https://github.com/kstenerud/Musashi) emulator, and the [Fragaria](https://github.com/shysaur/Fragaria) editor. Tricky68k was tested on OS X Yosemite and later, up to macOS Catalina. ### About the Teletype The simulator implements a single I/O device (the teletype), mapped from 0xFFE000 to 0xFFFFFF inclusive. - You write a (16 bit) word to that range to output a character to the teletype - You read from the same range to fetch character from the keyboard FIFO. If the keyboard FIFO is empty, -1 will be read. No interrupts are fired when the FIFO gets data, so you need a loop which waits until a character is read: ``` fetchChar: move.w $FFE000,d0 bmi fetchChar ;Loop while reads a < 0 value ;Read something > 0 => got a character ```
