quincunx

9 ms·

61.
by quincunx 11y ago
The x86 instruction for this would be LOCK CMPXCHG8B and would allow atomically writing 64 bits. (The x64 version would be LOCK CMPXCHG16B for writing 128 bits.) Instruction goes back a while, there was a bug on pentium https://e
62.
by quincunx 11y ago
After grinding through a bunch of compiler books I have to mention "Modern Compiler Implementation in C - Andrew A. Appel": http://www.amazon.co.uk/dp/0521607655 as one that stands out. For LALR Parsers and D
63.
by quincunx 11y ago
This is just so awesome - back in the day it's this itch "how does the hw do it?" that makes you wonder, and then, some 25 years later, someone figures it out and now you know. Perhaps I'm misreading but one tiny inaccur
64.
by quincunx 11y ago
Not sure I understand, suppose 100,000 non-managing employees, span of 1 to 10, adds 10,000 managers, span 1 to 10, adds 1,000 more managers, span 1 to 10, adds 100 more managers, and so on. Therefore, for a company of 111,111 employees, th
65.
by quincunx 13y ago
Ooh! I know this one! Copper bars: Copper wait-until-screen-vpos-hblank, change $dff180 (bankground screen color) Vertical bars: create a single horizontal 1D bitmap (pref. hold-and-modify); set BLPxMOD to negative the number of bytes of a
66.
by quincunx 14y ago
Hmm not so sure about the example code.. Shouldn't the code be checking for EINTR when calling read/write/etc..?
67.
by quincunx 14y ago
From reading the spec, the problem with SVG is that it is very difficult to implement completely due to the all-encompassing rendering model, javascript integration and animation scripting. This makes it difficult to read and write, without