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Comment: Re:Typical redditor (Score 4, Informative) 137

by NP-Incomplete (#28935659) Attached to: Intel Confirms Data Corruption Bug, Halts New SSDs
On a chip, adding 2^256-1 and 1 may not equal 2^256 when:
  1. Your destination register is 256 bits.
  2. Your destination register is in a different clock domain.
  3. Your timing constraints are wrong.
  4. Your power grid cannot support switching 256 registers.

Functional simulations will only catch #1.

Comment: Here you go (Score 1) 185

by NP-Incomplete (#28693441) Attached to: Suggestions For Learning FPGA Development At Home?
List of FPGA prototyping boards. Xilinx software is free for certain FPGAs. http://www.fpga-faq.com/FPGA_Boards.shtml For books, the only one I know of with an emphasis on synthesis results that includes both VHDL and Verilog is "HDL Chip Design" by Douglas J. Smith. I highly recommend Verilog over VHDL even though I learned VHDL first. Also Xilinx has obscene amounts of documentation on their websitehttp://www.xilinx.com/support/documentation/. Some of their whitepapers and app notes cover general logic design techniques.

Comment: Re:If you know anything about statistics... (Score 2, Informative) 512

by NP-Incomplete (#28355897) Attached to: Statistical Suspicions In Iran's Election

...you know that a small random sample of the population tells you what the general population is like to a very high degree of certainty.

Statistics allows you to extrapolate results from a small sample set if, and only if, the the entire sample set follows a known statistical model.

Data, n.: An accrual of straws on the backs of theories.

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