MIPS-X

MIPS-X is a

Integrated Information Technology (IIT) for use in digital video

MIPS-X, while designed by the same team and architecturally very similar, is instruction-set incompatible with the mainline MIPS architecture R-series processors. The MIPS-X processor introduced the concept of a delayed branch, which includes two delay slots.^[1] An MIPS-X processor also includes a Processor Status Word (PSW) register. The PSW register contains some flags that enable interruptions, overflow exceptions and other status information.^[2] The MIPS-X processor is obscure enough that, as of November 20, 2005, support for it is provided only by specialist developers (such as Green Hills Software), and is notably missing from the GNU Compiler Collection (GCC).

MIPS-X has become important among

hackers, since many DVD players (especially low-end devices) use chips based on the IIT design (and produced by ESS Technology), as their central processor. Devices such as the ESS VideoDrive system on a chip (SoC) also include a digital signal processor

References

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v t e Reduced instruction set computer (RISC) architectures
Origins	IBM 801 Berkeley RISC Stanford MIPS
Active	Analog Devices Blackfin ARC ARM AVR eSi-RISC LatticeMico8, LatticeMico32 MIPS OpenRISC Power ISA Renesas M32R, SuperH, V850 RISC-V SPARC Sunway Unicore Xilinx MicroBlaze, PicoBlaze
Discontinued	Alpha AMD Am29000 Apollo PRISM Atmel AVR32 Clipper CR16 CRISP DEC PRISM Intel i860, i960 META MIPS-X Motorola 88000, M·CORE PA-RISC POWER, PowerPC, ROMP