Another PowerPC in space

Date: 2022-01-10T13:27:00-08:00


The last POWER1 on Mars may be dead, but there are still Power ISA chips out there in space. The newest one to join them is another BAE RAD750 (a radiation-hardened PowerPC 750, the processor generation Apple called a G3) in the James Webb Space Telescope Integrated Science Instrument Module, clocked at a ripping 118MHz (.pdf) with 44MB of RAM and appears to run VxWorks. The JWST managed to flawlessly open its sunshield this weekend made from multiple layers of fragile Kapton as thin as a human hair unfolding "like origami." Can't wait to see the photos it will produce.