M32R

The M32R is a 32-bit RISC instruction set architecture (ISA) developed by Mitsubishi Electric for embedded microprocessors and microcontrollers. The ISA is now owned by Renesas Electronics Corporation, and the company designs and fabricates M32R implementations. M32R processors are used in embedded systems such as Engine Control Units, digital cameras and PDAs. The ISA was supported by Linux and the GNU Compiler Collection but was dropped in Linux kernel version 4.16^[1].

References

↑ Simon Sharwood (3 April 2018). "Linux 4.16 arrives, erases eight CPUs and keeps melting Meltdown". theregister.co.uk. Situation Publishing. Archived from the original on 3 April 2018. Retrieved 3 April 2018.

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Reduced instruction set computer (RISC) architectures
IBM 801 Berkeley RISC Stanford MIPS
Active	Altera Nios II Analog Devices Blackfin ARC ARM AVR DLX eSi-RISC LatticeMico8 LatticeMico32 MIPS OpenRISC Power POWER PowerPC Cell Renesas M32R Renesas SuperH Renesas V850 RISC-V Sunway SPARC Unicore Xilinx MicroBlaze Xilinx PicoBlaze XMOS XCore XS1 Mill
Historic	Alpha AMD Am29000 Apollo PRISM Atmel AVR32 Clipper CRISP DEC Prism Intel i860 Intel i960 Meta MIPS-X Motorola 88000 PA-RISC ROMP S+core