Control And Status Bit Deþnitions; True/False Bit State Deþnitions; Bit Value Descriptions - Motorola MVME167 Series Installation Manual

Introduction to the MVME167 Installation Guide
1
Control and Status Bit Definitions
True/False Bit State Definitions

Bit Value Descriptions

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The terms control bit and status bit are used extensively in this
document to describe certain bits in registers.
Term
The bit can be set and cleared under software
Control bit
control
The bit reßects a speciÞc condition
Status bit
The status bit can be read by software to determine
operational or exception conditions.
True and False indicate whether a bit enables or disables the
function it controls:
Term
True Enables the function it controls.
False Disables the function it controls.
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.
Describes
.
Indicates
.