11. All of this fits in one 48-bit instruction : 12. This generation introduced the Thumb 16-bit instruction set providing improved code density compared to previous designs. 13. SHmedia mode is very different, using 32-bit instructions with sixty-four 64-bit integer registers and SIMD instructions. 14. The "'ARM Cortex-A72 "'is a microarchitecture implementing the ARMv8-A 64-bit instruction set designed by ARM Holdings. 15. You can see that Renesas still sells processors with 4-bit, 8-bit, 16-bit, and 32-bit instruction sets. 16. Most of the architectural changes were for cost reductions, such as adding 16-bit instructions for byte-efficiency. 17. The "'ARM Cortex-A53 "'is a microarchitecture implementing the ARMv8-A 64-bit instruction set designed by ARM Holdings. 18. For example, his f20 cores had 31 5-bit instructions , which fit four to a 20-bit word. 19. Special prefixes allow inclusion of 32-bit instructions in a 16-bit segment or " vice versa ". 20. Originally, 12-bit instructions included 5 address bits to specify the memory operand, and 9-bit branch destinations.
