The ISA is not better than others in any real way, but IBM put a lot of early work into RAS features for their server chipsets, and this sort of leaked into the automotive and aviation world.
If you want to run 3 cpus lockstep, verifying each other's results, the PPC world already has the infrastructure. This and other similar things make it an easy choice for some applications.
Comments
The ISA is not better than others in any real way, but IBM put a lot of early work into RAS features for their server chipsets, and this sort of leaked into the automotive and aviation world.
If you want to run 3 cpus lockstep, verifying each other's results, the PPC world already has the infrastructure. This and other similar things make it an easy choice for some applications.
IIRC, the service processor on IBM x86 servers is a PPC. (runs the light-path diagnostics, and manages remote boots, etc)