ATARI-800XL-DISPLAYLIST-WHAT-AND-HOW
--------------------------------------------------------------------------------------------------
TOOL: 		Turbo-BASIC XL Version 1.5
Language: 	BASIC 
Extra:		-
Author: 	Misel Zivanovic
Note:		(C) 19th DEC 2025 - www.lived.ch, mzretro.ch
---------------------------------------------------------------------------------------------------

Most important thing is to understand what you {we} are doing! For that reason we will start 
exploring the DisplayList options and see what is it all about in first place.

I am new to this too, but we got this, right!

ATARI-800XL is having many text/graphics modes {or exactly 28!}
Some of them are PURE MODES {GTIA-Modes and GRAPHICS 0 as a TEXT MODE}, other Modes are a mix of 
graphics/text split-screen {OR NOT! e.g. GR.1+16}.
In most cases, text part is the lowest part of the screen, 4 lines.

We will start from scratch, GRAPHICS MODE 0 {TEXT MODE, 40 columns, 24 lines}
For the moment it can be said how this program i wrote below, really is helpful. 
The reason is that SCREEN START ADDRESS and START OF THE DISPLAYLIST literally never is the same!
It obviously is depending on available RAM and the SOFTWARE, CARTRIDGES in use.
So the best practice is to always check the numbers before you use the addresses!

***************************************************************************************************
DID NOT FIND THIS YET, BUT I ASSUME HOW:
You can probably define your own start address for the DISPLAY LIST and SCREEN.
By altering the values in LOW/HIGH BYTES of the involved registers!
We will not do that here for now because I have no idea what RAM Area is the best for it!

UPDATE {23.12.2025}
Basically you can mix all modes, just need to place the LMS first {for the correct positioning}
followed by the ANTIC numbers for the rows {or scanlines}
You can also try without {some combination will work, some partly, some will cause problems}
But it is fast to experiment that way!
Later you can do it properly! Check below EXAMPLE 3!
***************************************************************************************************

Also the address area, the difference between SCREEN AREA <-> DISPLAYLIST START, 
doesn't mean it's all DisplayList! In one case it is not even when watched from the space ship
{Can be noticed on many zero's after the DisplayList entries to reach the SCREEN START ADDRESS AREA!

Program below will show you the start address of the DisplayList and save
attributes in an area of available fields!

Bad habit of all GRAPHICS Modes is AUTO-CLS. It means the screen is always cleared!
Doesn't matter if real graphics or just a text screen.


2000 REM EDITOR SETUP
2010 POKE 729,20:REM KEY DELAY
2020 POKE 730,3:REM KEY REPEAT
2030 POKE 731,3:REM NO  CLICK
2040 POKE 82,0:REM NO  LEFT MARGIN
2050 POKE 710,0:REM SCREEN COLOR
2060 POKE 712,0:REM BORDER COLOR
2070 REM EDITOR SETUP
2080 REM
2090 GRAPHICS 3
2100 SCREEN=PEEK(88)+PEEK(89)*256
2110 DLIST=PEEK(560)+PEEK(561)*256
2120 DL=SCREEN-DLIST
2130 PRINT
2140 PRINT "SCREEN : ";SCREEN
2150 PRINT "DLIST  : ";DLIST
2160 PRINT
2170 PRINT "DISPLAY-LIST:"
2180 DIM A(DL):DIM N$(1):N$=CHR$(32)
2190 FOR L=0 TO DL
2200   A(L)=PEEK(DLIST+L)
2210   PRINT " ";A(L);
2220 NEXT L
2225 GOSUB 2270
2230 END
2240 FOR A=0 TO DL:PRINT N$;A(A);:NEXT A
2245 GOSUB 2270
2250 END
2260 REM ---------------------------
2270 PRINT
2275 PRINT "PRESS ENTER"
2280 IF PEEK(764)=12 THEN END
2285 GOTO 2280
2290 RETURN
2300 REM ---------------------------


Because SPLITSCREEN is showing only for lines, complete information is also saved in an area.

Type GR.0
then LIST 2240
2240 FOR A=0 TO DL:PRINT N$;A(A);:NEXT A
{delete 2240 and press ENTER. This will list the DISPLAYLIST data!}
{default is already below, but in case you want to list your own DL creations, this will do it}

***************************************************************************************************
RUSULTS GRAPHICS MODES DISPLAY LIST LISTING!
***************************************************************************************************

----------------------------------------------------------
GRAPHICS MODE 0, NO-SPLIT, TEXT ONLY, 1 COLOR, 40x24	--
----------------------------------------------------------

SCREEN  : 48192
DL-START: 48160

DISPLAY-LIST:
112 112 112 66 64 188 2 2 2 2 2 2 2 2 2
2 2 2 2 2 2 2 2 2 2 2 2 2 2 65 32 188 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 1, SPLIT-SCREEN				--
----------------------------------------------------------
PRINT SC
48512

PRINT ST
48478

DISPLAY-LIST:
112 112 112 70 128 189 6 6 6 6 6 6 6 6
6 6 6 6 6 6 6 6 6 6 6 66 96 191 2 2 2 65
94 189 0
----------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 1+16, NO-SPLIT 				--
----------------------------------------------------------
This was totally unexpected result!!
POKE 48512,32 is showing @ in 9th ROW, 1st column?
Who can explain that?!

SCREEN  : 48512
DL-START: 48480

DISPLAY-LIST:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0
----------------------------------------------------------|
----------------------------------------------------------|
----------------------------------------------------------|
HUSTON WE HAVE A PROBLEM!				  |
							  |
All GRAPHICS x+16 are delivering only			  |
ZERO's as a result and the screen start address		  |
is somewhere in the middle of the screen.		  |
If you POKE SCREEN ADDRESS - 40,33 then you see		  |
nothing on the screen!					  |
Because of that I will not list such *GRAPHICS MODES!	  |
{I tried a few, it's all the same!!! 0 0 0 0 0 0 0 0!	  |
							  |
* In the MAPPING THE ATARI, they clearly shows that	  |
  this actually should work! Guess it's the EMULATOR!?    |
----------------------------------------------------------|
If one day i find out more about this behavior, then	  |
I'LL BE BACK!						  |
----------------------------------------------------------|
----------------------------------------------------------
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 2, SPLIT-SCREEN				--
----------------------------------------------------------
PRINT SC
48752

PRINT ST
48728

DISPLAY-LIST:
112 112 112 71 112 190 7 7 7 7 7 7 7 7 7
66 96 191 2 2 2 65 88 190 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 3, SPLIT-SCREEN				--
NOTE HOW THIS ONE IS ALSO SHOWING TEXT ON BOTH LOCATIONS,
UP and DOWN!
----------------------------------------------------------
PRINT SC
48752

PRINT ST
48718

VERSION 1:
DISPLAY-LIST: {TEXT PORTION IS AT THE BOTTOM OF THE SCREEN}
112 112 112 72 112 190 8 8 8 8 8 8 8 8
8 8 8 8 8 8 8 8 8 8 8 66 96 191 2 2 2 65
78 190 0

VERSION 2:
DISPLAY-LIST: {TEXT PORTION IS AT THE TOP OF THE SCREEN}
112 112 112 66 96 191 2 2 2 72 112 190
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 65
78 190 64
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 4, SPLIT-SCREEN				--
----------------------------------------------------------
PRINT SC
48512

PRINT ST
48458

DISPLAY-LIST:
112 112 112 73 128 189 9 9 9 9 9 9 9 9
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
9 9 9 9 9 9 9 9 9 9 9 66 96 191 2 2 2 65
74 189 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 5, SPLIT-SCREEN				--
----------------------------------------------------------
PRINT SC
48032

PRINT ST
47978

DISPLAY-LIST:
112 112 112 74 160 187 10 10 10 10 10 10
10 10 10 10 10 10 10 10 10 10 10 10 10
10 10 10 10 10 10 10 10 10 10 10 10 10
10 10 10 10 10 10 10 66 96 191 2 2 2 65
106 187 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 6, SPLIT-SCREEN				--
----------------------------------------------------------
PRINT SC
47072

PRINT ST
46978

DISPLAY-LIST:
112 112 112 75 224 183 11 11 11 11 11 11
11 11 11 11 11 11 11 11 11 11 11 11 11
11 11 11 11 11 11 11 11 11 11 11 11 11
11 11 11 11 11 11 11 11 11 11 11 11 11 11
11 11 11 11 11 11 11 11 11 11 11 11 11
11 11 11 11 11 11 11 11 11 11 11 11 11
11 11 11 11 11 11 11 66 96 191 2 2 2 65
130 183 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 7, SPLIT-SCREEN				--
----------------------------------------------------------
PRINT SC
45152

PRINT ST
44962

DISPLAY-LIST:
112 112 112 77 96 176 13 13 13 13 13 13
13 13 13 13 13 13 13 13 13 13 13 13 13
13 13 13 13 13 13 13 13 13 13 13 13 13 13
13 13 13 13 13 13 13 13 13 13 13 13 13
13 13 13 13 13 13 13 13 13 13 13 13 13
13 13 13 13 13 13 13 13 13 13 13 13 13 13
13 13 13 13 13 13 66 96 191 2 2 2 65 162
175 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 8, SPLIT-SCREEN				--
----------------------------------------------------------
PRINT SC
41296

PRINT ST
41040

DISPLAY-LIST:
112 112 112 79 80 161 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 79 0 176 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 66 96 191 2 2
2 65 80 160 177 160 160 19 145 144 160 1
177 160 160 20 145 144 144 204 104 133
161 104 133 160 104 133 178 104 133 145
133 15 104 133 144 133 14 104 170 96 72
165 144 72 165 145 72 165 178 72 165 160
72 165 161 72 165 138 72 165 139 72 165
190 72 165 191 72 32 130 193 32 197 201
32 211 247 176 36 72 164 161 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 9, GTIA					--
----------------------------------------------------------
PRINT SC
41296

PRINT ST
41014

DISPLAY-LIST:
112 112 112 79 80 161 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 79 0 176 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
65 54 160 177 160 160 19 145 144 160 1
177 160 160 20 145 144 144 204 104 133
161 104 133 160 104 133 178 104 133 145
133 15 104 133 144 133 14 104 170 96 72
165 144 72 165 145 72 165 178 72 165
165 160 72 165 161 72 165 138 72 165 139
72 165 190 72 165 191 72 32 130 193 32
197 201 32 211 247 176 36 72 164 161 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 10, GTIA					--
----------------------------------------------------------
PRINT SC
41296

PRINT ST
41014

DISPLAY-LIST:
112 112 112 79 80 161 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 79 0 176 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 15
65 54 160 177 160 160 19 145 144 160 1
177 160 160 20 145 144 144 204 104 133
161 104 133 160 104 133 178 104 133 145
133 15 104 133 144 133 14 104 170 96 72
165 144 72 165 145 72 165 178 72 165 160
72 165 161 72 165 138 72 165 139 72 165
190 72 165 191 72 32 130 193 32 197 201
32 211 247 176 36 72 164 161 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 11, GTIA					--
----------------------------------------------------------
PRINT SC
41296

PRINT ST
41014

DISPLAY-LIST:
112 112 112 79 80 161 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 1
5 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 1
5 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 79 0 176 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 1
5 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 1
5 15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15
15 15 15 15 15 15 15 15 15 15 15 15 15 1
5 65 54 160 177 160 160 19 145 144 160 1
177 160 160 20 145 144 144 204 104 133
161 104 133 160 104 133 178 104 133 145
133 15 104 133 144 133 14 104 170 96 72
165 144 72 165 145 72 165 178 72 165 160
72 165 161 72 165 138 72 165 139 72 165
190 72 165 191 72 32 130 193 32 197 201
32 211 247 176 36 72 164 161 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 12, SPLIT-SCREEN, 4 COLORS, 40x20 Characters					--
----------------------------------------------------------
PRINT SC
48032

PRINT ST
47998

112 112 112 68 160 187 4 4 4 4 4 4 4 4
4 4 4 4 4 4 4 4 4 4 4 66 96 191 2 2 2 65
126 187 0
----------------------------------------------------------
-
----------------------------------------------------------
GRAPHICS MODE 13,  SPLIT-SCREEN, 4 COLORS, 40x10 Characters					--
----------------------------------------------------------
PRINT SC
48512

PRINT ST
48488

112 112 112 69 128 189 5 5 5 5 5 5 5 5
5 66 96 191 2 2 2 65 104 189 0
----------------------------------------------------------
-
-
-
-------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------
LET'S CREATE OUR OWN DISPLAY LIST!
WE NEED THIS {FROM THE MAPPING THE ATARI BOOK and I added a few Information}:

However, first after we figure out what are all these fancy numbers doing!
Those massively equal numbers are clearly the screen itself depending on the GRAPHICS and ANTIC
MODE! 

The main advantage of the DISPLAYLISTS is the ability to mix them with each other, but can i
just create a SCREEN, GRAPHICS MODE like, e.g. {Modified GRAPHICS MODE 0} and will do?

--------------------------------------------------------------------------------|
INSTRUCTION  |	BASIC |	SCAN  |	PIXEL |	BYTE  |	WHAT IS IT?			|
DEC  |	HEX  |	MODE  |	LINES |	LINES |	LINES |					|
-----|-------|--------|-------|-------|-------|---------------------------------|
     |       |        |	      |       |       | BLANK LINES DEPARTMENT		|
-----|-------|--------|-------|-------|-------|---------------------------------|
 00  |  $00  |  --    |  01   |  --   |  --   | 1 Blank line			|
 16  |	$10  |  --    |  02   |  --   |  --   | 2 Blank lines			|
 32  |  $20  |  --    |  03   |  --   |  --   | 3 Blank lines			|
 48  |  $30  |  --    |  04   |  --   |  --   | 4 Blank lines			|
 64  |  $40  |  --    |  05   |  --   |  --   | 5 Blank lines			|
 80  |  $50  |  --    |  06   |  --   |  --   | 6 Blank lines			|
 96  |  $60  |  --    |  07   |  --   |  --   | 7 Blank lines			|
112  |  $70  |  --    |  08   |  --   |  --   | 8 Blank lines			|
-----|-------|--------|-------|-------|-------|---------------------------------|
     |       |        |	      |       |       |  DISPLAY TEXT INSTRUCTIONS	|
-----|-------|--------|-------|-------|-------|---------------------------------|
 02  |	$02  |  00    |  08   |  40   |  40   | TEXT MODE 0    			|
 03  |	$03  |  --    |  10   |  40   |  40   | TEXT MODE *  			|
 04  |	$04  |  --    |  08   |  40   |  40   | TEXT MODE *  			|
 05  |	$05  |  --    |  16   |  40   |  40   | TEXT MODE * 			|
 06  |	$06  |  01    |  08   |  20   |  20   | TEXT MODE 1  			|
 07  |	$07  |  02    |  16   |  20   |  20   | TEXT MODE 2 			|
-----|-------|--------|-------|-------|-------|---------------------------------|
     |       |        |	      |       |       | DISPLAY GRAPHICS INSTRUCTIONS	|
-----|-------|--------|-------|-------|-------|---------------------------------|
 08  |	$08  |  03    |  08   |   40  |  10   | GRAPHICS MODE 2			|
 09  |	$09  |  04    |  04   |   80  |  10   | GRAPHICS MODE 3			|
 10  |	$0a  |  05    |  04   |   80  |  20   | GRAPHICS MODE 4			|
 11  |	$0b  |  06    |  02   |  160  |  20   | GRAPHICS MODE 5			|
 12  |	$0c  |  --    |  01   |  160  |  20   | GRAPHICS MODE 6			|
 13  |	$0d  |  07    |  02   |  160  |  40   | GRAPHICS MODE *   		|
 14  |	$0e  |  --    |  01   |  160  |  40   | GRAPHICS MODE *			|
 15  |	$0f  |  08    |  01   |  320  |  40   | GRAPHICS MODE 8			|
-----|-------|--------|-------|-------|-------|---------------------------------|
     |       |        |	      |       |       | 3 BYTES-LONG JUMP INSTRUCTIONS	|
-----|-------|--------|-------|-------|-------|---------------------------------|
 65  |  $41  |  --    |  ---  |  ---  |  ---  | JUMP AND WAIT FOR VBLANK	|
 32  |  $20  |  --    |  ---  |  ---  |  ---  | TO DISPLAY THE LIST		|
188  |  $BC  |  --    |  ---  |  ---  |  ---  | STARTING @ e.g. $BC20		|
-----|-------|--------|-------|-------|-------|---------------------------------|
     |       |        |       |       |       | $BC = HIGH BYTE, $20 = LOW BYTE |
-----|-------|--------|-------|-------|-------|---------------------------------|

GENERAL IN REGARD TO DISPLAY LIST:

NOTE 1:	YOUR DISPLAYLIST MUST HAVE 192 SCANLINES 	{OR AS CLOSE AS POSSIBLE TO AVOID ISSUES            }
	{Some modes are having exactly 8 scan lines, some less some more! Include that in the calculation!  }

NOTE 2: DISPLAY LIST ITSELF CANNOT CROSS 1K BOUNDARY 	{NO EXPLANATION WHAT THAT ACTUALLY MEANS!           }
NOTE 3: DISPLAY LIST DATA CANNOT CROSS 1KB BOUNDARY 	{NO EXPLANATION WHAT THAT ACTUALLY MEANS!           }
NOTE 4: YOU CAN HAVE AS MANY DISPLAY LIST's AS YOU WISH {USE JUMP/VERTICAL BLANK AT THE END OF DL           }
NOTE 5: SECURE PLACE FOR OWN DISPLAY LIST IS PAGE 6	{I ASSUME THEY MEAN 256*6 = 1536, $0600	   	    }
NOTE 6: POKE 559,0 WILL DISABLE THE FETCH LIST INSTRUC. {ENABLE WITH "PROPER VALUE" NOT SAYING WHAT VALUE!!?}

MY OPINION:
MAPPING THE ATARI has a lot of INFORMATION and VERY LITTLE EXPLANATION!
MOST OF THE THINGS ARE STILL A MYSTERY.
BUT THEY DO POINT OUT TO READ MANY COMPUTE! ARTICLES IN REGARD TO ATARI-DISPLAY LIST!
AND ALSO IS SUGGESTING DE-RE-ATARI, YOUR ATARI 400/800 and many more!

MAPPING THE ATARI is obviously well aware how this what they are delivering in regard to DISPLAY-LIST
will not really make anyone be a DISPLAY LIST MASTER.

-------------------------------------------------------------------------------------------------

DISPLAYLIST DESTROYER!!!

NOTE:
{ I got all the DATA from the book: MAPPING THE ATARI, however, despite all the INFORMATION 	   }
{ i still do not get what they are trying to say to me! Haha... That's why i took GRAPHICS MODE 0  }
{ while they were explaining GRAPHICS MODE 2		                   		           }

SCREEN START ADDRESS IS AT	 : 48192, $bc40
DISPLAY LIST START ADDRESS IS AT : 48160, $bc20

DISPLAY-LIST: {GRAPHICS MODE 0, 1 COLOR, 40x24 CHARACTERS}, 24 * 16 = 

ATTRIBUTES!	DISPLAYLIST-MEMORY-LOCATION
DEC	HEX	DEC 		HEX		  WHAT and HOW!
                 
		DLIST  +  x     DLIST  +   x
                                       	
112	#$70	48160 {+  0}    $bc20 {+ #$00}	- 8 BLANK LINES
112	#$70	48161 {+  1}	$bc21 {+ #$01}	- 8 BLANK LINES
112	#$70	48162 {+  2}	$bc22 {+ #$02}	- 8 BLANK LINES
66	#$42	48163 {+  3}	$bc23 {+ #$03}	- GRAPHICS MODE 0 with LMS instruction added
64	#$40	48164 {+  4}	$bc24 {+ #$04}	- First screen line {horizontal pos}, LOW-BYTE
188	#$bc	48165 {+  5}	$bc25 {+ #$05}	- HIGH-BYTE {89} * 256 + 64 ->> 188 * 256 + 64 = dec 48192, hex $bc40
2	#$02	48166 {+  6}	$bc26 {+ #$06}	- ANTIC MODE 2
2	#$02	48167 {+  7}	$bc27 {+ #$07}	- ANTIC MODE 2
2	#$02	48168 {+  8}	$bc28 {+ #$08}	- ANTIC MODE 2
2	#$02	48169 {+  9}	$bc29 {+ #$09}	- ANTIC MODE 2
2	#$02	48170 {+ 10}	$bc2a {+ #$0a}	- ANTIC MODE 2
2	#$02	48171 {+ 11} 	$bc2b {+ #$0b}	- ANTIC MODE 2
2	#$02	48172 {+ 12}	$bc2c {+ #$0c}	- ANTIC MODE 2
2	#$02	48173 {+ 13}	$bc2d {+ #$0d}	- ANTIC MODE 2
2	#$02	48174 {+ 14}	$bc2e {+ #$0e}	- ANTIC MODE 2
2	#$02	48175 {+ 15}	$bc2f {+ #$0f}	- ANTIC MODE 2
2	#$02	48176 {+ 16}	$bc30 {+ #$10}	- ANTIC MODE 2
2	#$02	48177 {+ 17}	$bc21 {+ #$11}	- ANTIC MODE 2
2	#$02	48178 {+ 18}	$bc22 {+ #$12}	- ANTIC MODE 2
2	#$02	48179 {+ 19}	$bc23 {+ #$13}	- ANTIC MODE 2
2	#$02	48180 {+ 20}	$bc24 {+ #$14}	- ANTIC MODE 2
2	#$02	48181 {+ 21}	$bc25 {+ #$15}	- ANTIC MODE 2
2	#$02	48182 {+ 22}	$bc26 {+ #$16}	- ANTIC MODE 2
2	#$02	48183 {+ 23}	$bc27 {+ #$17}	- ANTIC MODE 2
2	#$02	48184 {+ 24}	$bc28 {+ #$18}	- ANTIC MODE 2
2	#$02	48185 {+ 25}	$bc29 {+ #$19}	- ANTIC MODE 2
2	#$02	48186 {+ 26}	$bc2a {+ #$1a}	- ANTIC MODE 2
2	#$02	48187 {+ 27}	$bc2b {+ #$1b}	- ANTIC MODE 2
2	#$02	48188 {+ 28} 	$bc2c {+ #$1c}	- ANTIC MODE 2
65	#$41	48189 {+ 29} 	$bc2d {+ #$1d}	- JUMP and wait Vertical-Blank
32	#$20	48190 {+ 30} 	$bc2e {+ #$1e}	- LOW-BYTE
188	#$bc	48191 {+ 31} 	$bc2f {+ #$1f}	- HIGH-BYTE 
						  {188*256+32) = dec 48160, hex $bc20 {the # on the top/start of DL!}
0		48192 = SCREEN START ADDRESS!


LMS: {From the Mapping the ATARI Book}

"The LMS instruction is a three-byte instruction; the second and third
bytes are the LSB and MSB of the address where the line or screen data
is to be displayed. You can add any or all of these modifications to the
text or graphics mode instructions. You can only add the interrupt
modification to blank line or jump instructions. The two bytes that
follow the jump instructions are the LSB and MSB of the address to
which the ANTIC jumps to continue or repeat the list"


-------------------------------------------------------------------------------------------------
ALRIGHT! DON'T KNOW ABOUT YOU PEOPLE BUT I HAVE HAD ENOUGH OF THE THEORY!
LET'S JUMP INTO THE COLD WATER AND LEARN WHILE WE ARE SWIMMING, DROWNING AND FREEZING!  Haha...
-------------------------------------------------------------------------------------------------


-------------------------------------------------------------------------------------------------
EXAMPLE 1 CODE {MODIFIED DISPLAY LIST GRAPHICS MODE 0}
-------------------------------------------------------------------------------------------------

1 REM EDITOR SETUP
2 POKE 729,20:REM .KEY DELAY
3 POKE 730,3:REM ..KEY REPEAT
4 POKE 731,3:REM ..NO  CLICK
5 POKE 82,0:REM ...NO  LEFT MARGIN
6 POKE 710,0:REM ..SCREEN COLOR
7 POKE 712,0:REM ..BORDER COLOR
8 REM EDITOR SETUP
10 AT=48160+6: REM ANTIC DATA
20 ST=48160:REM MAX. 6 BYTES (0-5)
30 GRAPHICS 0
40 PRINT "MY OWN DISPLAY LIST GR.0"
50 PRINT "AND I AM ATARI-800XL"
60 POKE ST+3,66
70 POKE ST+4,64
80 FOR A=1 TO 16:POKE AT+A,13:NEXT A
81 REM
82 PRINT :PRINT
83 PRINT "  A   AAAA   A   AAAAA AA"
84 PRINT " BBB   BB   BBB  BB BB BB"
85 PRINT "CC CC  CC  CC CC CC CC CC"
86 PRINT "DD DD  DD  DD DD DD DD DD"
87 PRINT "EE EE  EE  EE EE EE EE EE"
88 PRINT "FFFFF  FF  FFHFF FFF   FF"
89 PRINT "GGGGG  GG  GGGGG GGGG  GG"
90 PRINT "HH HH  HH  HH HH HH HH HH"
91 PRINT "II II  II  II II II  I II"
92 PRINT "JJ JJ  JJ  JJ JJ JJ  J JJ"
93 PRINT "KK KK  KK  KK KK KK  K KK"
94 PRINT :PRINT

--------------------------------------------------------------------------------
SCREEN INFORMATION:
Because of the DisplayList modifications, the screen view, listing is messed up!
I am using Altirra Emulator {WINDOWS} and can press F5 to do the warm-reset and 
establish the normal view. Your listing won't be lost of course!
--------------------------------------------------------------------------------


-------------------------------------------------------------------------------------------------
EXAMPLE 2 CODE 
-------------------------------------------------------------------------------------------------
{First example was messy and difficult to read}
{We need to do better!}

In first place, we did not bother with scan lines and the result was small screen!
Short screen cannot be considered as disadvantage. There are many things which can
be achieved using it...

However, this time we will pay attention {well, or maybe not! haha}

-----------------------------------------------------------------------------------
"SOMETHING ELSE BEFORE"

READ, RESTORE, DATA is with Turbo-BASIC XL totally different compared to Commodore!

		COMMODORE BASIC VERSION {not working with Atari} 
		FOR A=0 TO 31: READ Y:POKE DLIST+A,Y:NEXT 
		
		UPDATE:
		{I COULDN'T BELIEVE THAT IT IS REALLY NOT WORKING!}
		{AND IT REALLY DOESN'T! AND THEN IT DOES ANYWAY, JUST NOTE WITH THE DISPLAYLIST EXAMPLE???}

		This code is working just fine in Turbo-BASIC-XL!
		10 FOR X=1536 TO 1538
		20   READ D
		30   POKE X,D
		40 NEXT X
		50 DATA 96,96,96

It took me a while to find a solution! But now it is okay!

		10 CLS :DIM A$(15)
		15 REPEAT
		20   PRINT B:READ A$
		30   PRINT A$
		35   B=B+1
		40 UNTIL B=7
		50 DATA MONDAY,TUESDAY,WEDNESDAY
		60 DATA THURSDAY,FRIDAY
		70 DATA SATRUDAY,SUNDAY
-----------------------------------------------------------------------------------

1 REM EDITOR SETUP
2 POKE 729,20:REM .KEY DELAY
3 POKE 730,3:REM ..KEY REPEAT
4 POKE 731,3:REM ..NO  CLICK
5 POKE 82,0:REM ...NO  LEFT MARGIN
6 POKE 710,0:REM ..SCREEN COLOR
7 POKE 712,0:REM ..BORDER COLOR
8 REM EDITOR SETUP
10 GRAPHICS 0
15 SCREEN=PEEK(88)+PEEK(89)*256
20 DLIST=PEEK(560)+PEEK(561)*256
25 REPEAT
30   READ Y
35   POKE DLIST+B,Y
40   B=B+1
45 UNTIL B=30
50 REM -------------------------------
55 REM OUR NEW DISPLAYLIST!
60 REM - BLANK LINES
65 DATA 112,112,112
70 REM - LMS, START, HIGH-BYTE
75 DATA 66,64,188
80 REM 188*256+64 = 48192 - SCREEN
85 REM ANTIC MODES
90 DATA 7,7,7,7,7,7,2,13
95 DATA 13,13,13,13,13,13,13,13
100 DATA 13,13,13,13,13,13,2
105 REM JUMP/WAIT VERTICAL BLANK
110 DATA 65
115 REM JUMP ADDRESS
120 DATA 32: REM LOW-BYTE
125 DATA 188: REM HIGH-BYTE
130 REM 188*256+32 = 48160 - DLIST
135 REM -----------------------------
140 PRINT "PRESS ENTER"
145 IF PEEK(764)=12 THEN END
150 GOTO 145

--------------------------------------------------------------------------------
SCREEN INFORMATION:
Because of the DisplayList modifications, the screen view, listing is messed up!
I am using Altirra Emulator {WINDOWS} and can press F5 to do the warm-reset and 
establish the normal view. Your listing won't be lost of course!
--------------------------------------------------------------------------------

This isn't yet perfect, but far better than the first example and above all,
much easier to understand.

What i still don't understand is the LMS part with LOW and HIGH Byte!
Every GRAPHICS MODE is having individual NUMBER for this and I had to try what will do until
i had it right {or close to}.
In this example, the first line should also have been ANTIC 7, but it is still ANTIC 2
If i change the LINE 75 from DATA 66,64,188 to DATA 71,64,188 that the top part is okay, but the rest not...
I need read more books to find how that really is working.
Problem with the books is how every single one is pointing to another book to get more information.
NOT COOL, hehe!

The number of GO-COMPUTE! is crazy large.
Looks like back then COMPUTE! was the only resource to scratch the knowledge together in regard to ATARI!
That were GREAT times... I was busy with the C128, not ATARI, but still!


-------------------------------------------------------------------------------------------------
EXAMPLE 3 CODE { DEFAULT GRAPHICS MODE 13, ANTIC 5}
-------------------------------------------------------------------------------------------------

Even if so far not all is clear. Let's move on...

All GRAPHICS MODES 1,2,3... etc. are using SPLIT-SCREEN, a screen with graphics and text combo!
And all have 4 text lines at the very end of the screen. That's actually how C128 is having too.
Lower part text, upper part graphics.
 
Now i was think what if i just kick few numbers?!
Will that be enough to move the text part somewhere else and why not on the top.
I think it shouldn't be any kind of impossible mission.

And action!

We will use out program again.
Because it really is crystal clear what it is doing!


These are default values!
How to switch TEXT field to TOP?
This program below will do it for you!
---------------------------------------
GR. 13
112 112 112 69 128 189 5 5 5 5 5 5 5 5
5 66 96 191 2 2 2 65 104 189 0
---------------------------------------

1 REM EDITOR SETUP
2 POKE 729,20:REM .KEY DELAY
3 POKE 730,3:REM ..KEY REPEAT
4 POKE 731,3:REM ..NO  CLICK
5 POKE 82,0:REM ...NO  LEFT MARGIN
6 POKE 710,0:REM ..SCREEN COLOR
7 POKE 712,0:REM ..BORDER COLOR
8 REM EDITOR SETUP
100 GRAPHICS 13
110 SCREEN=PEEK(88)+PEEK(89)*256
120 DLIST=PEEK(560)+PEEK(561)*256
130 DLSIZE=SCREEN-DLIST
140 DLSIZE=DLSIZE-2
150 REPEAT
160   READ Y
170   POKE DLIST+B,Y
180   B=B+1
190 UNTIL B=DLSIZE
200 REM ----------------------------
210 REM OUR NEW DISPLAYLIST! TOP-TEXT
220 REM GRAPHICS MODES 0 & 13!
230 REM - 3 BLANK LINES
240 DATA 112,112,112
250 REM - LMS, START, HIGH-BYTE
260 DATA 66,96,191
270 REM ANTIC MODES GRAPHICS 0 / TEXT
280 DATA 2,2,2
290 DATA 69,128,189
300 REM ANTIC MODES GRAPHICS 13
310 DATA 5,5,5,5,5,5,5,5,5
320 REM JUMP/WAIT VERTICAL BLANK
330 DATA 65
340 REM JUMP ADDRESS
350 DATA 104: REM LOW-BYTE
360 DATA 189: REM HIGH-BYTE
370 REM ----------------------------
380 PRINT "PRESS ENTER"
390 IF PEEK(764)=12 THEN END
400 GOTO 390

Not very difficult.
Basically we can do that for all GRAPHICS MODES with SPLIT SCREEN!
And we learned how LMS can literally be placed everywhere.
I {we} did not do that in previous, first 2 examples.
Probably that is why it worked, but not as it should have!
At least it did not crash.
Ergo, also that way it is usable!

Interesting is also how we created 4 lines with just 3 ANTIC numbers {2,2,2}?

Well, that will wait for the next time.
Here is enough material available to experiment a while with the DISPLAY-LISTS!

-------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------
ATARI - GRAPHICS MODES {ALL TOGETHER 28 DIFFERENT GRPAHICS MODES}:

NOTE: 
SPLITSCREEN is always lower number e.g. GRAPHICS 1 {as SPLIT-SCREEN version}
To activate the full screen without split-mode, just add 16 to it!

GRAPHICS 1+16 = Same screen as 1 just no SPLITTING!
{All these + 16 GRAPHICS MODES resulted in ZERO'S. Maybe those can't be used and therefore
they have no DISPLAYLISTISTING available. I just ignored them until i got smarter because it really 
can be how there is a reason for such results! On the other side, in BOOKs it does work. Emulator issue? }

|---------------|-------|------|-------|----------------|-------|---------|
|GRAPHICS MODE  |NUMBER |ANTIC |COLOR  |RESOLUTION	|SCNLINE|MEM BYTES|
|---------------|-------|------|-------|----------------|-------|---------|
|Text Screen	|0	|2     |1,2Lum |40X x 24Y   CHR |8   	|992	  |
|---------------|-------|------|-------|----------------|-------|---------|
|Text Screen	|17	|      |5      |20X x 24Y   CHR |8      |672      |
|with different |1-wTxt	|6     |5      |20X x 20Y   CHR |8      |674	  |
|X & Y sized	|-------|------|-------|----------------|-------|---------|
|Characters	|18	|      |5      |20X x 12Y   CHR |16     |420      |
|4 Modes total	|2-wTxt	|7     |5      |20X x 10Y   CHR |16	|424	  |
|---------------|-------|------|-------|----------------|-------|---------|
|Graphics 	|19	|      |4      |40X x 24Y   PIX |8      |432	  |
|Screen Modes	|3-wTxt	|8     |4      |40X x 20Y   PIX |8	|434	  |
|4-Colors max.  |-------|------|-------|----------------|-------|---------|
|Independent of	|21	|      |4      |80X x 48Y   PIX |4      |1176	  |
|the possible	|5-wTxt |A     |4      |80X x 40Y   PIX |4	|1174	  |
|resolution.	|-------|------|-------|----------------|-------|---------|
|		|23	|      |4      |160X x 96Y  PIX |2      |4200	  |
|		|7-wTxt	|D     |4      |160X x 80Y  PIX |2	|4190	  |
|		|-------|------|-------|----------------|-------|---------|
|		|31	|      |4      |160X x 192Y PIX |2      |8138     |
|		|15-wTxt|E     |4      |160X x 160Y PIX |2      |8112     |
|---------------|-------|------|-------|----------------|-------|---------|
|Graphics	|20	|      |2      |80X x 48Y   PIX |4      |696      |
|Screen Modes	|4-wTxt |9     |2      |80X x 40Y   PIX |4      |694      |
|2-Colors max.  |-------|------|-------|----------------|-------|---------|
|Independent of	|22	|      |2      |160X x 96Y  PIX |2      |2184     |
|the possible 	|6-wTxt	|B     |2      |160X x 80Y  PIX |2      |2174     |
|resolution.	|-------|------|-------|----------------|-------|---------|
|		|30	|      |2      |160X x 192Y PIX |2      |4296     |
|		|14-wTxt|C     |2      |160X x 160Y PIX |2      |4270     |
|---------------|-------|------|-------|----------------|-------|---------|
|High resolution|24	|      |1,2Lum |320X x 192  PIX |1      |8138     |
|Graphics Mode	|8-wTxt	|F     |1,2Lum |320X x 160  PIX |1      |8112     |
|---------------|-------|------|-------|----------------|-------|---------|
|GTIA-MODES     |       |      |       |                |       |         |
|{POKE 623,64}  |9	|F     |1,16Lum|80X x 192   PIX |1	|8138	  |
|{POKE 623,128}	|10	|F     |9      |80X x 192   PIX |1	|8138	  |
|{POKE 623,192}	|11	|F     |16     |80X x 192   PIX |1	|8138	  | 
|---------------|-------|------|-------|----------------|-------|---------|
|Text Screen	|28	|      |4      |40X x 24    CHR |8      |1152     |
|with different	|12-wTxt|4     |4      |40X x 20    CHR |8      |1154     |
|X & Y sized	|-------|------|-------|----------------|-------|---------|
|Characters	|29	|      |4      |40X x 12    CHR |16     |660      |
|4-Colors max.	|13-wTxt|5     |4      |40X x 10    CHR |16     |664      |
|---------------|-------|------|-------|----------------|-------|---------|