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I built an 8-bit RISC CPU inside of Excel. The Processor uses a custom RISC ISA that has only 10 instructions (making this a Super-RISC computer). The machine has only a single register, but is equipped with a stack to help in executing instructions. The greater computer system features 1KB of RAM and ROM each, and a 16x16px 64-color screen.
The Excel SRISC CPU: https://github.com/InkboxSoftware/excelRISC-CPU
Other sources:
Ultimate RISC computer: https://en.wikipedia.org/wiki/One-instruction_set_computer
Music:
Feabhas, Rhapsody, Free Music Archive
i(4), Rhapsody, Free Music Archive
The Sea's Just A Puddle, Rhapsody, Free Music Archive
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