Motorola MVME167 Series, Installation Manual, Page: 18 / 176

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Introduction to the MVME167 Installation Guide
1
Control and Status Bit Definitions
The terms control bit and status bit are used extensively in this
document to describe certain bits in registers.
❏
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:
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.
Term Describes
Control bit
The bit can be set and cleared under software
control
.
Status bit
The bit reßects a speciÞc condition
.
Term Indicates
True Enables the function it controls.
False Disables the function it controls.