<digshadow>
cyrozap: do you have any interest in giving an mtvre talk on psoc stuff
<digshadow>
ie in about a week
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<cyrozap>
digshadow: I'm not in CA...
<cyrozap>
Also, pointfree has been doing most of the work for a while now; I've taken a break to focus on some other projects.
<digshadow>
gotcha
<digshadow>
I might have mixed you up again
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<pointfree>
digshadow: I've been preparing a talk on bitstream reversal using Mill's Methods with a focus on the Cypress PSoC 5LP.
<pointfree>
This is a lot like Karnaugh maps or Quine-McCluskey: bits that vary are merged. In fact I am looking into the possibility of running logic synthesis on the regmap.
<pointfree>
constraint_mask | variance_mask == i | variance_mask // where "i" is the current address to be displayed or not to be displayed with its name.
<pointfree>
I can filter the flat PSoC 5LP regmap simply with a pair of bitmasks (a constraint bitmask and a variance bitmask). I can list any meaningful subset of registers with just a constraint and variance bitmask!
<pointfree>
I use Mill's Methods to isolate causation between wires (.route file) and switches (bitstream, aka config.hex)
<pointfree>
Right now, I just thought, I want to use the isolated bits as the bitmasks for filtering bitstream, not just regmaps.
<digshadow>
pointfree: preparing a talk for the 8th?
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<rqou>
WOOT MY ROOM IS FINALLY ORGANIZED
<rqou>
everything has been either put into a spot (not on the floor) or converted to a negative externality :P
<lain>
floor
<lain>
the largest shelf.
<rqou>
nah, "my parents' house" is larger :P
<lain>
haha
<lain>
hokay, sleep time
<rqou>
that's part of the "negative externality" :P
<rqou>
the rest of it is "the hallway"
<lain>
I want an underground lair
<lain>
multi-story underground facility
<lain>
on shocks to withstand earth quakes, like skyscrapers in japan. we don't have earthquakes here but if I'm going to build a massive underground lair I might as well go all out.
<rqou>
i have an underground lair, it'
<lain>
prettymuch the only natural disaster that occurs here is tornados, and we've only had one of those in my lifetime that I'm aware of - it was actually just last summer, went right across the street here, scared the bejesus out of me
<rqou>
it's called "the CS building"
<lain>
lol nice
<rqou>
which actually has ~2 floors below ground
<rqou>
where the undergrad lab is
<rqou>
as well as sooper sekrit grad student showers :P
<lain>
it was like the smallest possible tornado that could still be classed as a tornado
<lain>
it tore some branches off a tree up the street and javelin'd them clean through someone's living room windows
<lain>
there were misc. twigs like sticking straight out of roofs
<lain>
it was crazy
<lain>
I'm sitting here at my computer and I notice the trees outside have really started to sway, then I realize they're bending like 90deg and that's not just wind
<lain>
never ran so fast in my life :P
<rqou>
hmm google images can't find any photos of the "CS dungeon"
<rqou>
only glamor shots of outside
<lain>
but yeah I figure - underground lair, tornado will just go over top
<lain>
needs to be a fallout shelter in case the nearest nuclear plant goes pop
<lain>
I'd be in the fallout zone for that
<lain>
I wonder how you deal with the water table when doing deep underground construction
<lain>
do you just seal the crap out of the outer walls and, I dunno, repair it periodically as stuff finds a way through? lol
<rqou>
idk, but $FANCY_SCHOOL has a literal abandoned mineshaft to understand how to deal with earthquake faults
<pie_>
pointfree, is this the statistical method everyones been talking about?
<rqou>
cyrozap: why does gitlab even allow pulling production data into staging? i thought that was recommended against due to it being much harder to secure staging envs
<pointfree>
If you're thinking of that new statistical test for causality, I don't know anything about it.
<pie_>
i have no idea
<pie_>
just some people sometimes mentioned some things aout bitstream reversing but noone said anything when i asked
<pointfree>
Maybe I should know something about that new statistical test, but what I'm effectively doing is applying logic synthesis to bitstream reversal.
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<pie_>
that makes sense
<pie_>
i havent done anything like this (yet?) but im very interested in what kind of work people have done :)
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<ZipCPU|Laptop>
eduardo: My plan is to get this project on GitHub running on the ZipCPU on the icoBoard: https://github.com/ZipCPU/tttt
<ZipCPU|Laptop>
Right now, it only builds for the PC --- but it is a rather fun game, even if the interface isn't the best.
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<nats`>
I'm prettya ngry
<nats`>
my oshstencil are marked as delivered on 10 january but I never got anything :\
<nats`>
will have to reorder
<nats`>
that's boring there is a lot of lost mails in my area
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<rqou>
i think my apartment has too many power strips in use
<rqou>
power strip --> extension cord --> power strip --> extension cord --> UPS --> power strip --> cheater plug --> wall
<rqou>
elsewhere: microwave --> power strip
<trap15>
sounds like a recipe for fire
<rqou>
fire? don't know what you're talking about /s
<rqou>
this is the reason why the us electrical code keeps increasing the required minimum number of outlets in a home
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<azonenberg>
Worst i have is UPS -> extension cord in crawl space going to garage -> rack PDU -> power strip
<azonenberg>
UPS is fed by a wall outlet in the house
<azonenberg>
Because the garage is only fed by a single 20A circuit and i cant run the servers, dehumidifier, and soldering irons etc off that
<nats`>
the pain of 110V :D
<azonenberg>
so i feed all of the computers plus overhead lighting and test equipment off the UPS and then have the hot air, reflow oven, dehumidifier, etc on the other circuit
<rqou>
why can't we just get 300vdc power distribution?
<azonenberg>
yeah 2kW is not enough
<azonenberg>
rqou: lol
<nats`>
DC would be stupid
<nats`>
edison wanted DC everywhere :D
<rqou>
mostly-compatible with existing cables, compatible with future solar/"smart" grid ideas
<azonenberg>
i'd be ok with 3-phase long-haul then 48V DC for in-room distribution
<azonenberg>
48V is still SELV
<rqou>
and mostly-compatible with existing smps designs
<azonenberg>
its already an industry standard
<azonenberg>
its easy to buck down to 12 or so
<rqou>
don't you mean -48V :P
<rqou>
thanks telcos
<azonenberg>
No, +48
<rqou>
wait, who uses +48V?
<azonenberg>
I was planning to
<azonenberg>
Just so i can have a reasonable ground reference
<azonenberg>
telco uses -48 b/c it provides protection against galvanic corrosion for outdoor stuff
<rqou>
right, but afaik the "standard" is actually -48V
<azonenberg>
of no significance indoor/dry
<rqou>
yeah
<mtp>
yeah
<azonenberg>
Yeah but if you have an isolated 48V supply
<azonenberg>
you can easily hook it up one way or the other
<nats`>
- or + are just reference
<nats`>
but going DC for long distance is stupid
<azonenberg>
Well, low voltage DC for long distance sure
<rqou>
or you can have a non-isolated supply and then short out the supply via the db9 shell :P
<azonenberg>
tens or hundreds of kV DC avoids inductive losses
<azonenberg>
i've heard of some lines preferring it
<rqou>
not like that has happened before :P
<azonenberg>
rqou: lol
<rqou>
the company my father used to work for did that by accident
<rqou>
the psu in the box they were making was isolated
<nats`>
but DC means huge rectifier at power source...
<rqou>
and the db9 shell was supposed to be too afaik
<rqou>
but somebody somehow nicked/damaged the soldermask near the edge of the pcb
<nats`>
+ there are some physical effect on oxydising line when using dc vs ac
<rqou>
so the db9 would work until you plugged a heavy cable into it
<rqou>
which would mechanically bend the connector ever so slightly and short the shell to the exposed ground plane