- ADI Blackfin
- Altera NIOS II
- ARM/Thumb
- Ephipany
- Freescale MC680xx and MC683xx
- Intel/AMD x86 (32-bit)
- Intel/AMD x86_64 (64-bit)
- Lattice Semiconductor Micro32
- MIPS including multiple ISA levels
- Moxie
- NEC V850
- OpenRISC OR1K
- PowerPC
- Renesas SuperH (SH1 through SH4)
- RISC-V
- SPARC including ERC32 and LEON
- SPARC64
Obsoleted ports
An RTEMS port may be obsoleted for a number of reasons. The CPU architecture may no longer be manufactured, interest within the embedded community has gone away, or the GNU tools may drop support for it. The following ports have been deemed obsolete and will not be in a future RTEMS release:
- AMD A29K
- Atmel AVR
- Hewlett-Packard PA-RISC
- Intel i960
- OpenCores? OR32 (revived)
- Renesas M32R
- Renesas H8/300
- Texas Instruments C3x/C4x