$cat /proc/asound/devices 2: : timer 3: : sequencer 4: [ 0- 2]: digital audio capture 5: [ 0- 1]: digital audio playback 6: [ 0- 1]: digital audio capture 7: [ 0- 0]: digital audio playback 8: [ 0- 0]: digital audio capture 9: [ 0- 0]: hardware dependent 10: [ 0] : control $ …
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proc filesystem with alsa.
$cat /proc/asound/cards 0 [NVidia ]: HDA-Intel – HDA NVidia HDA NVidia at 0xf5000000 irq 22 $ The HD-audio component consists of two parts: the controller chip and the codec chips on the HD-audio Linux provides a single driver for all controllers, snd-hda-intel. Although the driver name contains a word of a well-known hardware vendor, it’s …
advanced linux sound architecture
The ALC883 series 7.1+2 Channel High Definition Audio (HDA) codecs are compliant with Microsoft’s UAA (Universal Audio Architecture). The ALC883 series provide 10 DAC channels that simultaneously support 7.1 sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the front panel stereo output. Flexible mixing, mute, and fine gain control functions …
acpi with proc
AC Adapter in Proc Filesystem Alternating current (AC) adapters are used to power or charge many common electronic devices, such as mobile phones, laptop computers, or external hard drives. An AC adapter changes AC power from an electrical outlet into the type of power or voltage that an electronic device needs to work. Typically, each …
code optimizer
code optimization optimization is the strategy of examining intermediate code as produced by or during the code generation phase with the aim of producing code that runs very efficiently.Production of code that use very little space has also been a goal of some optimizers; nevertheless, the main emphasis has traditionally been and will be in …
intermediate code generation
Intermediate Code Generation Because of the complexity of code generation, a compiler typically breaks up this phase into several steps,involving various intermediate data structures, often including some form of abstract code called intermediate code. Reference/Source : Compiler Construction: Principles and Practice Kenneth C Louden
semantic analysis
Semantic Analysis Semantic analysis is the phase in which the compiler adds semantic information to the parse tree and builds the symbol table.This phase performs semantic checks such as type checking (checking for type errors), or object binding (associating variable and function references with their definitions), or definite assignment (requiring all local variables to be …
token.phrase.structure.grammar.syntax.
Token. something serving as an indication,proof,or expression of something else. Phrase. Two or more words in sequence that form a syntactic unit that is less than a complete sentence. Structure. mode of arrangement of parts. Grammar. The elements of any science , art , or subject. Syntax. The study of rules for the formation of …
syntax analyzer
During syntax analysis the tokens of the source program are grouped into grammatical phrases that are used by a compiler to synthesis the output. Reference/Source: http://www.lkn.ei.tum.de/arbeiten/faq/man/tau42_help/comptheory6.html
Lexical Analysis
Lexical analysis is the process of taking an input string of characters (such as the source code of a computer program) and producing a sequence of symbols called “lexical tokens”, or just “tokens”, which may be handled more easily by a parser. A token, in computing, is a segment of text, regardess whether it be …