4 ms·

If you prefer your radiation-hardened processors to be stack-based, I gotchu: https://en.m.wikipedia.org/wiki/RTX2010 https://en.m.wikipedia.org/wiki/RTX2010

pkaye 3y ago
That processor is 35 years old. I doubt it is available anymore.
- Rebelgecko 3y ago
  I dunno, the RAD750 is 20+ years old, based on an even older PowerPC chip from the 90s, and still going strong.
  - brucehoult 3y ago
    Going strong, as in: officially being replaced by RISC-V.
    - olabyne 3y ago
      The mars helicopter rover has a common mobile CPU, hardened a bit. The fact that aircraft has a lot of common consumer sensors and is still going strong is amazing (bosch IMU found in smartphone, OV camera, etc ... !)
      - orbital-decay 3y ago
        It has 7 CPUs, the COTS SoC is just one of them. It's used for the vision tasks - hazard avoidance, odometry etc, and it's optional, as the helicopter is able to be controlled without it. It was specifically a test for the COTS components on Mars, and the vision system actually had multiple issues with frame skipping (I'm not aware of the direct cause though, might have been camera or the software for example).
  - jakeinspace 3y ago
    Nobody is shipping those any more (okay, maybe not nobody, but very few if any). Gaisler's chips (GR740 = Sparc, NOEL-V = RISC-V) are pretty popular, the satellite manufacturer I work for uses them fairly ubiquitously.
    - arcticbull 3y ago
      I think the parent was saying that 35 year old parts are still likely to be available - rather than saying that they're a good choice.
- chasil 3y ago
  For reference, the Hubble is running a "25 MHz Intel-based 80486" which is 34 years old. "The DF-224 and its 386 co-processor were replaced by a 25 MHz Intel-based 80486 processor system during Servicing Mission 3A in 1999. The new computer is 20 times faster, with six times more memory, than the DF-224 it replaced. It increases throughput by moving some computing tasks from the ground to the spacecraft and saves money by allowing the use of modern programming languages." https://en.m.wikipedia.org/wiki/Hubble_Space_Telescope https://en.m.wikipedia.org/wiki/Hubble_Space_Telescope The 80486 was introduced in 1989. I still have a couple. Three cheers for backward compatibility!

pkaye 3y ago

That processor is 35 years old. I doubt it is available anymore.

Rebelgecko 3y ago
I dunno, the RAD750 is 20+ years old, based on an even older PowerPC chip from the 90s, and still going strong.
- brucehoult 3y ago
  Going strong, as in: officially being replaced by RISC-V.
  - olabyne 3y ago
    The mars helicopter rover has a common mobile CPU, hardened a bit. The fact that aircraft has a lot of common consumer sensors and is still going strong is amazing (bosch IMU found in smartphone, OV camera, etc ... !)
    - orbital-decay 3y ago
      It has 7 CPUs, the COTS SoC is just one of them. It's used for the vision tasks - hazard avoidance, odometry etc, and it's optional, as the helicopter is able to be controlled without it. It was specifically a test for the COTS components on Mars, and the vision system actually had multiple issues with frame skipping (I'm not aware of the direct cause though, might have been camera or the software for example).
- jakeinspace 3y ago
  Nobody is shipping those any more (okay, maybe not nobody, but very few if any). Gaisler's chips (GR740 = Sparc, NOEL-V = RISC-V) are pretty popular, the satellite manufacturer I work for uses them fairly ubiquitously.
  - arcticbull 3y ago
    I think the parent was saying that 35 year old parts are still likely to be available - rather than saying that they're a good choice.
chasil 3y ago
For reference, the Hubble is running a "25 MHz Intel-based 80486" which is 34 years old. "The DF-224 and its 386 co-processor were replaced by a 25 MHz Intel-based 80486 processor system during Servicing Mission 3A in 1999. The new computer is 20 times faster, with six times more memory, than the DF-224 it replaced. It increases throughput by moving some computing tasks from the ground to the spacecraft and saves money by allowing the use of modern programming languages." https://en.m.wikipedia.org/wiki/Hubble_Space_Telescope https://en.m.wikipedia.org/wiki/Hubble_Space_Telescope The 80486 was introduced in 1989. I still have a couple. Three cheers for backward compatibility!