View source for M32R

{{Short description|Microcontroller architecture}}
{{Infobox CPU architecture
| name       = M32R
| designer   = [[Renesas Electronics]]
| bits       = 32-bit
| introduced = 1997
| version    = 
| design     = RISC
| type       = 
| encoding   = Fixed, 16- or 32-bit
| branching  = 
| endianness = Bi
| extensions = 
| open       = 
| registers  = 16× 32-bit integer registers
}}
The '''M32R''' is a 32-bit [[Reduced instruction set computer|RISC]] [[instruction set architecture]] (ISA) developed by [[Mitsubishi Electric]] for embedded [[microprocessor]]s and [[microcontroller]]s. The ISA is now owned by [[Renesas Electronics Corporation]], and the company designs and fabricates M32R implementations. M32R processors are used in [[embedded system]]s such as Engine Control Units, [[digital camera]]s and PDAs. The ISA was supported by [[Linux]] and the [[GNU Compiler Collection]] but was dropped in Linux kernel version 4.16.<ref>{{cite news|author1=Simon Sharwood|title=Linux 4.16 arrives, erases eight CPUs and keeps melting Meltdown|url=https://www.theregister.co.uk/2018/04/03/linux_4_16_released/|accessdate=3 April 2018|work=theregister.co.uk|publisher=Situation Publishing|date=3 April 2018|archiveurl=https://web.archive.org/web/20180403102729/https://www.theregister.co.uk/2018/04/03/linux_4_16_released/|archivedate=3 April 2018}}</ref><ref>{{Cite web |url=https://lkml.iu.edu/hypermail/linux/kernel/1804.0/00306.html |title=[GIT PULL] arch: remove obsolete architecture ports |accessdate=2024-02-20}}</ref> GCC removed support for this architecture in the GCC 12.1 release.<ref>{{cite news|author1=GCC|title=GCC 12 Release Series: Changes, New Features, and Fixes|url=https://gcc.gnu.org/gcc-12/changes.html|accessdate=15 Jun 2023|work=gcc.gnu.org|publisher=Situation Publishing|date=15 Jun 2023|archiveurl=https://web.archive.org/web/20230615181633/https://gcc.gnu.org/gcc-12/changes.html|archivedate=15 Jun 2023}}</ref>

==References==
{{Reflist}}

==External links==
* [http://www.renesas.com/products/mpumcu/m32r/index.jsp M32R homepage]
* [http://www.linux-m32r.org Linux/M32R homepage]
* [https://web.archive.org/web/20060213210400/http://www.cqpub.co.jp/eda/BLANCA/ Interface (CQ Publishing Co., Ltd.)]

{{Renesas Electronics}}
{{RISC-based processor architectures}}{{Microcontrollers}}

[[Category:Computer-related introductions in 1997]]
[[Category:Instruction set architectures]]
[[Category:Renesas microcontrollers]]


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