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26 Jan, 21 tweets, 5 min read

look what I got!

https://twitter.com/Foone/status/1353059363120762885

yes, it's one of these.

https://twitter.com/Foone/status/1353059363120762885

hmm I wonder if the CMOS battery is still good

only one way to find out! to take this apart you just undo the two thumbscrews

oooh

dead as a doornail

combination SCSI card and PCI riser. I'll need to figure out an adapter cable so I can I use this with a SCSI2SD.

I'd like to try netbsd on it. but there are some things I have to do first: new battery, check the fan, SCSI2SD.

salty

AAA cells: three don't quite fit. time to go smaller!

time for the fabled AAAA cell!

fits great

don't solder to batteries, mmmkay

it's booting the netbsd installer from cd-rom!

noice!

I really ought to get a better fan. these Multias have a really poor thermal design.

fan swap time!

adding a thermocouple to see how hot this gets. the lid needs to be on otherwise the airflow won't be right

ah crap. guess I'll have to try a network install.

CPU temp looks good though

fails even when copied over the network. looks like it is failing during the untar process. since it happens at a slightly different place every time, i suspect the SCSI2SD, or perhaps the SD card.

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29 Jan

https://twitter.com/TubeTimeUS/status/1318314567588442112

so remember these IBM PS/2 fasteners that always break? the ones in the model 50 and model 70? i have found a source for the original parts!

https://twitter.com/TubeTimeUS/status/1318314567588442112

they're still being made by a company called Southco! southco.com/en_us_int/

they make them in all different sizes, too.

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22 Jan

why are chips often so expensive? how do chip companies determine the prices of their chips? a thread... 🧵

first thing chip companies do is to figure out the COGS - cost of goods sold. this is how much it costs them to produce a chip--not counting profit or anything else.

but before we can calculate that, we need to know The Life of a Chip, start to finish!

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22 Jan

do you watch YouTube? i have a suggestion for you... 🧵

don't give in to the tyranny of The Algorithm, and don't let it choose which videos you watch.

here's a few things you can do:
✅no autoplay
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21 Jan

oh wow i hear there's a new development board from a hobby electronics company, and apparently they did their own custom chip! it even has multiple CPU cores!