[Coco] rover
KnudsenMJ at aol.com
KnudsenMJ at aol.com
Fri Jan 23 17:22:47 EST 2004
In a message dated 1/23/04 8:32:15 AM Eastern Standard Time,
jadonaldson at charter.net writes:
> News this morning seems to say they got comm with the
> rover again. They were saying they sent commands for it to
> send engineering data back.
They're probably still working intensely on debugging the system, looking for
software bit-rot in RAM. Many of us on the List can sympathize with someone
doing such bug tracing -- but imagine what if, every command you typed had a
20-minute delay before anything showed on your screen? Of course NASA is using
bulk data dumps, but you can imagine that "tracing" the code between
"breakpoints" could burn up a few days.
I was relieved to find out that the radio hadn't gone out. Supposedly, NASA
can reboot the whole machine, sending the bytes of executable over the radio
link, but that is a last resort.
Anyone know what CPUs the Rover uses, and whether the code was done in
assembler or something higher-level? --Mike K.
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