Motorola MVME187 User Manual
Terminology, Conventions, and Definitions Used in this Manual
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Assertion and Negation Conventions
Assertion and negation are used to specify forcing a signal to a
particular state. These terms are used independently of the voltage
level (high or low) that they represent.
particular state. These terms are used independently of the voltage
level (high or low) that they represent.
Data and Address Size Definitions
Data and address sizes are defined as follows:
Big-Endian Byte Ordering
This manual assumes that the MPU on the MVME187 always
programs the CMMUs with big-endian byte ordering, as shown
below. Any attempt to use little-endian byte ordering will
immediately render the MVME187Bug debugger unusable.
programs the CMMUs with big-endian byte ordering, as shown
below. Any attempt to use little-endian byte ordering will
immediately render the MVME187Bug debugger unusable.
Term
Indicates
Assertion and assert
The signal is active or true.
Negation and negate
The signal is inactive or false.
Name
Size
Numbered
SigniÞcance
Called
Byte
8 bits
0 through 7
bit 0 is the
least
signiÞcant
least
signiÞcant
Two-byte
16 bits
0 through 15
bit 0 is the
least
signiÞcant
least
signiÞcant
half-
word
word
Four-byte
32 bits
0 through 31
bit 0 is the
least
signiÞcant
least
signiÞcant
word
BIT
BIT
31 24
23 16
15 08
07 00
ADR0
ADR1
ADR2
ADR3