ARM VERSION 1.2 - Manual (Page 69)

Writing ARM and Thumb Assembly Language
ARM DUI 0068B Copyright © 2000, 2001 ARM Limited. All rights reserved. 2-57
Example 2-21
StartOfData EQU 0x1000
EndOfData EQU 0x2000
MAP StartOfData
Char FIELD 1
Char2 FIELD 1
Char3 FIELD 1
EndOfChars FIELD 0
Padding FIELD (-EndOfChars):AND:3
Integer FIELD 4
Integer2 FIELD 4
String FIELD MaxStrLen
Array FIELD ArrayLen*8
BitMask FIELD 4
EndOfUsedData FIELD 0
ASSERT EndOfUsedData <= EndOfData