Motorola MVME187 Control and Status Bit Definitions, True/False Bit State Definitions, control

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Introduction to the MVME187 Installation Guide

Control and Status Bit Definitions

The terms control bit and status bit are used extensively in this document to describe certain bits in registers.

Term	Describes
Control bit	The bit can be set and cleared under software
	control.
Status bit	The bit reflects a specific condition.

❏The status bit can be read by software to determine operational or exception conditions.

True/False Bit State Definitions

True and False indicate whether a bit enables or disables the function it controls:

Term	Indicates
True	Enables the function it controls.
False	Disables the function it controls.

Bit Value Descriptions

In all tables, the terms 0 and 1 are used to describe the actual value that should be written to the bit, or the value that it yields when read.

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