rvalp/book/glossary.tex

\newglossaryentry{latex}
{
    name=LaTeX,
    description={Is a mark up language specially suited
    	for scientific documents}
}

\newglossaryentry{binary}
{
	name=binary,
	description={Something that has two parts or states.  In computing
		these two states are represented by the numbers one and zero or
		by the conditions true and false and can be stored in one \gls{bit}}
}
\newglossaryentry{hexadecimal}
{
	name=hexadecimal,
	description={A base-16 numbering system whose digits are 0123456789abcdef.  
		The hex digits (\gls{hit}s) are not case-sensitive}
}
\newglossaryentry{bit}
{
	name=bit,
	description={One binary digit}
}
\newglossaryentry{hit}
{
	name={hit},
	description={One \gls{hexadecimal} digit}
}
\newglossaryentry{nybble}
{
	name={nybble},
	description={Half of a {\em \gls{byte}} is a {\em nybble}
		(sometimes spelled nibble.)  Another word for {\em \gls{hit}}}
}
\newglossaryentry{byte}
{
	name=byte,
	description={A \gls{binary} value represented by 8 \gls{bit}s}
}
\newglossaryentry{halfword}
{
	name={halfword},
	description={A \gls{binary} value represented by 16 \gls{bit}s}
}
\newglossaryentry{fullword}
{
	name={fullword},
	description={A \gls{binary} value represented by 32 \gls{bit}s}
}
\newglossaryentry{doubleword}
{
	name={doubleword},
	description={A \gls{binary} value represented by 64 \gls{bit}s}
}
\newglossaryentry{quadword}
{
	name={quadword},
	description={A \gls{binary} value represented by 128 \gls{bit}s}
}
\newglossaryentry{HighOrderBits}
{
	name={high order bits},
	description={Some number of \acrshort{msb}s}
}
\newglossaryentry{LowOrderBits}
{
    name={low order bits},
    description={Some number of \acrshort{lsb}s}
}

\newglossaryentry{xlen}
{
	name=XLEN,
	description={The number of bits a RISC-V x integer \gls{register}
		(such as x0).  For RV32 XLEN=32, RV64 XLEN=64 and so on}
}
\newglossaryentry{rv32}
{
	name=RV32,
	description={Short for RISC-V 32.  The number 32 refers to the \gls{xlen}}
}
\newglossaryentry{rv64}
{
	name=RV64,
	description={Short for RISC-V 64.  The number 64 refers to the \gls{xlen}}
}
\newglossaryentry{overflow}
{
	name=overflow,
	description={The situation where the result of an addition or 
		subtraction operation is approaching positive or negative 
		infinity and exceeds the number of bits allotted to contain 
		the result.  This is typically caused by high-order truncation}
}
\newglossaryentry{underflow}
{
	name=underflow,
	description={The situation where the result of an addition or 
		subtraction operation is approaching zero and exceeds the number 
		of bits allotted to contain the result.  This is typically
        caused by low-order truncation}
}

\newglossaryentry{MachineLanguage}
{
	name={machine language},
	description={The instructions that are executed by a CPU that are expressed
		in the form of \gls{binary} values}
}
\newglossaryentry{register}
{
	name={register},
	description={A unit of storage inside a CPU with the capacity of \gls{xlen} \gls{bit}s}
}
\newglossaryentry{program}
{
	name={program},
	description={A ordered list of one or more instructions}
}
\newglossaryentry{address}
{
	name={address},
	description={A numeric value used to uniquely identify each \gls{byte} of main memory}
}
\newglossaryentry{alignment}
{
	name={alignment},
	description={Refers to a range of numeric values that begin 
		at a multiple of some number.  Primarily used when referring to
		a memory address.  For example an alignment of two refers to one
		or more addresses starting at even address and continuing onto
		subsequent adjacent, increasing memory addresses}
}
\newglossaryentry{exception}
{
	name={exception},
	description={An error encountered by the CPU while executing an instruction
		that can not be completed}
}

\newglossaryentry{bigendian}
{
	name={big-endian},
	description={A number format where the most significant values are 
	printed to the left of the lesser significant values.  This is the
	method that everyone uses to write decimal numbers every day}
}
\newglossaryentry{littleendian}
{
	name={little-endian},
	description={A number format where the least significant values are 
		printed to the left of the more significant values.  This is the
		opposite ordering that everyone learns in grade school when learning
		how to count.  For example, the \gls{bigendian} number written as ``1234''
		would be written in little endian form as ``4321''}
}
\newglossaryentry{rvddt}
{
	name={rvddt},
	description={A RV32I simulator and debugging tool inspired by the 
		simplicity of the Dynamic Debugging Tool (ddt) that was part of 
		the CP/M operating system}
}
\newglossaryentry{mnemonic}
{
	name={mnemonic},
	description={A method used to remember something.  In the case of
		assembly language, each machine instruction is given a name
		so the programmer need not memorize the binary values of each
		machine instruction}
}
\newglossaryentry{thread}
{
	name={thread},
	description={An stream of instructions.  When plural, it is
		used to refer to the ability of a CPU to execute multiple 
		instruction streams at the same time}
}
\newglossaryentry{ascii}
{
	name={ASCII},
	description={American Standard Code for Information Interchange.
		See \autoref{chapter:ascii}}
}
\newglossaryentry{place-value}
{
	name={place value},
	description={the numerical value that a digit has as a result of its {\em position} within a number.
	For example, the digit 2 in the decimal number 123 is in the ten's place and its place value is 20}
}


\newacronym{hart}{hart}{Hardware Thread}
\newacronym{msb}{MSB}{Most Significant Bit}
\newacronym{lsb}{LSB}{Least Significant Bit}
\newacronym{isa}{ISA}{Instruction Set Architecture}
\newacronym{cpu}{CPU}{Central Processing Unit}
\newacronym{ram}{RAM}{Random Access Memory}
\newacronym{rom}{ROM}{Read Only Memory}
%\newacronym{ascii}{ASCII}{American Standard Code for Information Interchange}