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Eric Rucker
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180 followers
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I might have a problem.

(The UPS is near the top for a reason, these aren't in a rack.)
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Welp. This is... nasty.

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No surprises: there's fun to be had with other storage media, but the write-up is good.

Woo, passed my Element 3 exam yesterday, at 100%. Now I just need to actually get an antenna setup to transmit on HF.

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Remember when computer programs were careful?
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Got the latest incarnation of my mainframe going, housed in an RS/6000 7011-250 that I got from +Noah Axon.

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Hat tip to +Noah Axon.
...and yes, this is why I get annoyed at products labelled "chemical free."
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Got the Mimeo running. Video section has an issue with a bad shift register, but the processor section is clearly running and getting the right things into the video section, and the video section is mostly doing the right things.

Tomorrow's plan is to do the finishing touches on the motherboard (install slot connector, add a couple more jumpers, install the ACI), and celebrate.

Future plans are to install the replacement shift register, finish the mounting board, build the rest of the case (which is going to be simplistic, but should be elegant and effective), get a keyboard going, get a slot expander, and install a CFFA1 (because why not). #mimeo1   #apple1
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2013-08-14
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Alright, got everything but the slot connector soldered! (The manual leaves that for last, after the system is brought up and fully tested.) FWIW, resolution on the caps was... use the 1.0 µF ones.

And, yes, the top 2400 µF cap is upside down (that is, the printing is underneath the cap - it doesn't affect functionality in any way), I know, I know. Realized it after I got it soldered in, decided I didn't want to unsolder that thing, sitting right on a whole bunch of ground plane. (It wasn't as bad as the 7905, though, that thing was a bear.)

Tomorrow's project: connect the transformers up, and go for first power up with no chips, to check out the power supply, I think. #mimeo1   #apple1
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