dfox

6 ms·

1.
by dfox 20d ago
At a first glance passive RFID would be a perfect match for ride photos, the whole mechanism is ridiculously fast so speed of the ride would not matter much (the technology works at highway speeds just fine) and can work over ~15 meters. Bu
2.
by dfox 20d ago
I suspect that is not an inherent limitation of the dual-ISA design (the HotChips slides mention some sort of bidirectional thread state mapping between arm and z), but just about there not being z/VM release that supports that (buildi
3.
by dfox 20d ago
IBM's mainframes do not really have a reset vector, the CPU gets initialized by some external means into whatever state the OS expects and then the clock gets enabled, so that distinction is quite moot.
4.
by dfox 1mo ago
They were always required. IIRC early AMD64 CPUs did not support x87 instructions in long mode at all (causing #UD), and that support was Intel's extension in first EM64T CPUs.
5.
by dfox 3mo ago
Basically the only thing interesting about the ConcertMaster is that Carmack used it (and that it looks somewhat cool). As for the keyboard itself, it is just a basic OEM membrane keyboard and not that good one even. The speakers are lets s
6.
by dfox 3mo ago
Do not do this unless you do not have any other choice. Preferrably use whatever native barcode support of the printer involved, if it does not have that, just generate the barcode as vector image or bitmap with a resolution that is a integ
7.
by dfox 3mo ago
The fact that this is standard practice does not mean that it is not perverse. It kind of works sanely for plain Code39 (and even then you will see effects of doing that in weird places, like VAG stamping human readable VIN on a chassis, in
8.
by dfox 3mo ago
It had, another thing is that it used somewhat questionable system for CD key validation, which is stubbed out in this release ( https://github.com/BohemiaInteractive/CWR/blob/main/engine/P... ). One
9.
by dfox 3mo ago
The most important fix in SP1 for Office 2007 was fixing exactly that in Excel. Doing ridiculous amount of 4 byte reads made it basically unusable on network filesystems.
10.
by dfox 4mo ago
One point is that there is no reason for the entire secret to be one element of the underlying field, it can very well be a n-tuple of elements of a smaller field, with GF(2^8) being the somewhat obvious choice if you do not expect ridiculo
11.
by dfox 4mo ago
> cannot start with digit Not only it can, but both CL and Emacs Lisp actually defines primitives with names that start with digit.
12.
by dfox 4mo ago
It is far from being universal. And the more annoying part of that is that there are at least 4 incompatible "standards" as to the format of the QRcode.
13.
by dfox 5mo ago
IIRC the really cheap Casio Organizers/DataBanks of 90's used 5x5 font. And then my ex used something like that on linux in order to fit a ridiculous amount of xterms onto 14" CRT (somewhat absurd feat with her congenital vis
14.
by dfox 5mo ago
Gnat Studio just works on Windows.
15.
by dfox 6mo ago
It uses exactly the same font in the desktop version, and is probably entirely intentional.
16.
by dfox 6mo ago
The telling part about uselessness of that window is that the most visible difference between StarOffice 5.2 and OpenOffice.org 1.0 was that equivalent of this window was removed. It got reintroduced probably because it makes packaging Libr
17.
by dfox 6mo ago
> running identical software on multiple computer systems is the name of the software-architecture game In the railway signalling industry (which for historically obvious reasons is obsessed with reliability) there even is a pattern of r
18.
by dfox 6mo ago
All the magic of Smalltalk is in the development tools that work by means of introspection into the running image, writing source code in text files causes you to lose all that. Add to that the fact that Smalltalk when written as source fil
19.
by dfox 7mo ago
PostgreSQL has this: https://www.postgresql.org/docs/current/ecpg.html
20.
by dfox 8mo ago
Unles the verification routine (eg. garage) keeps some state somewhere it has no way to prevent replays.
21.
by dfox 8mo ago
There is this kind of webdev-adjacent niche where the model of using documentation (or even intentionally sub-par documentation) as a marketing funnel for consulting and/or "Pro" versions is a thing. These projects are somewh
22.
by dfox 8mo ago
If I understand the history correctly then it started as a set of C preprocessor macros.
23.
by dfox 9mo ago
> Creating obfuscated values using integers While that is often neat solution, do not do that by simply XORing the numbers with constant. Use a block cipher in ECB mode (If you want the ID to be short then something like NSA's Speck
24.
by dfox 11mo ago
> Security? MUCH worse. Comparing single-purpose declarative language that is not even really turing-complete with all the ugly hacks needed to make DOM/JS reasonably secure does not make any sense. Exactly what you can abuse in XSL
25.
by dfox 11mo ago
It is not only that ASN.1 was there before SSL, but even the certificate format was there before SSL. The certificate format comes from X.500, which is the "DAP" part of "LDAP", L as in "Lightweight" in "L
26.
by dfox 11mo ago
Mostly no. You do not see the lower layers and for anything sub 1um or so the resolution is too poor anyway.
27.
by dfox 1y ago
The reasoning behind the auto-locking feature is that when the doors are locked it adds to rigidity of the car and thus decreases the likelyhood of the passanger cabin collapsing on the occupants. Auto unlocking the doors would completely d
28.
by dfox 1y ago
> The specifications document was so long that it would be difficult for anyone else to implement it properly. In contrast to ODF specification that is long, complex and written in such a terse way that it really does only specify what i
29.
by dfox 1y ago
My experience with Dell is that they are not that focused on selling enterprise support (at least compared to HPE), at most they will push for bundling hardware (cables, cable trays, front covers, PERC...) that you do not really need in ord
30.
by dfox 1y ago
Modern protocols running over RS-485 UART usually use some kind of HDLC-inspired framing scheme with flag characters and byte stuffing. But still there is a lot of stuff that uses ASCII STX/ETX and then some kind of field separators in

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