UM0438 datasheet(48/50 Pages) STMICROELECTRONICS

Part #	UM0438

Description	This user manual defines a programming model for use with the variable-length encoding

PDF	50 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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48 / 50 page

Glossary

UM0438

48/50

Supervisor mode

The privileged operation state of a processor. In supervisor mode, software, typically the

operating system, can access all control registers and can access the supervisor memory

space, among other privileged operations.

Tiny

A floating-point value that is too small to be represented for a particular precision format,

including denormalized numbers; they do not include ±0.

Underflow

An error condition that occurs during arithmetic operations when the result cannot be

represented accurately in the destination register. For example, underflow can happen if two

floating-point fractions are multiplied and the result requires a smaller exponent and/or

mantissa than the single-precision format can provide. In other words, the result is too small

to be represented accurately.

User mode

The unprivileged operating state of a processor used typically by application software. In

user mode, software can only access certain control registers and can access only user

memory space. No privileged operations can be performed. Also referred to as problem

state.

Word

A 32-bit data element.

UM0438 Datasheet(PDF) 48 Page - STMicroelectronics