31–40 of 79 posts
Love the project, writing style and what is was made of (fpga, round lcd, Jupiter moons sim... so cool). But now I'm frustrated I can't see the display animation.
With great difficulty.”
I thought this was funny until the last picture, then I thought it was great.
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How soon until the 1/25-scale cray C90 gets as many MIPS as the original? Seems like the one he built is within shouting distance.
He then worked alongside Cray and sold many of his computers when they were both at Control Data. He has a ton of stories of how he would go into huge companies like 3M and tell them everything they knew about data storage was about to change. He said their jaws would drop when he gave them numbers on how much they were going to save by using the new Cray computers.
Its very cool and nostalgic to hear people doing these projects and keeping the early days of the computer revolution alive.
> The display shows a free-running simulation of Jupiter and 63 of its moons. For convenience, I just plot the X/Y coordinates of each moon in the ecliptic plane. The ephemerides come from the HORIZONS server that NASA operates, at a specified date and time. The J90 just dumps a new frame whenever the Teensy has pulled the previous one, so with a teensy (ha!) bit of calibration on the micro controller side, it would…
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