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About this Manual
Conventions
Numbers
All numbers are expressed in decimal, except addresses and memory or register
data, which are expressed in hexadecimal. Where confusion may occur, decimal
numbers have a "D" subscript and binary numbers have a "b" subscript. The prefix
"0x" shows a hexadecimal number, following the 'C' programming language
convention. Thus:
The multipliers "k", "M" and "G" have their conventional scientific and engineering
meanings of *10
description of the size of memory areas, when "K", "M" and "G" mean *2
*2
30
Multiple bit fields are numbered from 0 to n, where 0 is the LSB and n is the MSB.
Text
Signal names ending with a tilde (~) denote active low signals; all other signals are
active high.
Filenames are shown in bold, e.g. apps/code.exe.
When showing user interaction on a terminal, messages from the system are shown
in courier typeface, i.e. messages, and user input is shown in bold courier typeface,
i.e. user input. The symbol "↵" is used to represent the '↵', 'enter', 'return' etc.
key on the keyboard.
Publication No. GBX24-0HH/2
One dozen = 12
= 0x0C = 1100
D
3
, *10
6
and *10
respectively.
NOTE
When describing transfer rates, "k", "M" and "G" mean *10
b
9
respectively. The only exception to this is in the
3
, *10
and *10
not *2
, *2
6
9
10
20
About this Manual 3
10
, *2
20
and
and *2
.
30
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