mips r3000 การใช้

CPUs emulated in this manner are SH-2, MIPS R3000 and PowerPC.
One notable recent CPU design that uses extensive clock gating is the IBM PowerPC-based MIPS R3000 compatible MiniMIPS.
By December they had begun porting NT OS / 2 to the MIPS R3000 processor instead, and completed the task in three months.
It was used in the VAX 6000, VAX 8000 ( 82xx, 83xx, 85xx, 87xx, 88xx models ) and the VAX 9000 systems and also on the MIPS R3000 based DECsystem 5800 series.
When Mach 3 attempted to move most of the operating system into user-space, the overhead became higher still : benchmarks between Mach and Ultrix on a MIPS R3000 showed a performance hit as great as 67 % on some workloads.