https://en.wikipedia.org/wiki/ARM_architecture#Design_concepts https://en.wikipedia.org/wiki/ARM_architecture#Design_concep... Parts of ARM were modeled after

https://en.wikipedia.org/wiki/ARM_architecture#Design_concepts https://en.wikipedia.org/wiki/ARM_architecture#Design_concep... Parts of ARM were modeled after 6502, it having been the processor used in the company's first successful microcomputer.