Contents


Author's Preface to the Revised Edition................	  v
Author's Preface.......................................	vii
Introduction / Bill Wilkinson..........................	xxi
Memory	Map............................................	  1
Appendix  1.	VBLANK Processes.......................	154
Appendix  2.	A Graphics Memory Map.................. 155
Appendix  3.	Atari Timing Values....................	160
Appendix  4.	Old (A) and New (B) ROMs............... 161
Appendix  5.	Color..................................	163
Appendix  6.	Sound and Music........................	167
Appendix  7.	Player/Missile Graphics
		Memory Map.............................	169
Appendix  8.	Display Lists..........................	171
Appendix  9.	Numerical Conversions..................	175
Appendix 10.	ATASCII and Internal Character
		Code Values............................	180
Appendix 11.	Addenda and Errata to the
		First Edition..........................	182
Appendix 12.	The XL/XE Memory Map................... 200
Appendix 13.	XL/XE Enhancements and Bugs............ 230
Appendix 14.	The XL/XE Parallel Bus................. 232
Appendix 15.	XL/XE Graphics Modes...................	236
Appendix 16.	Memory Management on the 13OXE.........	238
Appendix 17.	DOS 2.5 and the 1050 Drive.............	241
Appendix 18.	Changing the 400/800 OS
		on the XL/XE Computers.................	244
Appendix 19.	XL/XE Programs.........................	247
XL/XE Index............................................	255
Index by Label......................................... 258
Index by Subject....................................... 263