APPENDIX F

SCREEN AND COLOR MEMORY MAPS - C128 Mode, 40 Column and C64 Mode


The following maps display the memory locations used in 40-column mode
(C128 and C64) for identifying the characters on the screen as well as
their color. Each map is separately controlled and consists of 1,000 posi-
tions.

The character displayed on the maps can be controlled directly with the
POKE command.

F.1 SCREEN MEMORY MAP

                                 COLUMN                             1063
      0             10             20             30            39 /
     +------------------------------------------------------------/
1024 |                                                            |  0
1064 |                                                            |
1104 |                                                            |
1144 |                                                            |
1184 |                                                            |
1224 |                                                            |
1264 |                                                            |
1304 |                                                            |
1344 |                                                            |
1384 |                                                            |
1424 |                                                            | 10
1464 |                                                            |
1504 |                                                            |   ROW
1544 |                                                            |
1584 |                                                            |
1624 |                                                            |
1664 |                                                            |
1704 |                                                            |
1744 |                                                            |
1784 |                                                            |
1824 |                                                            | 20
1864 |                                                            |
1904 |                                                            |
1944 |                                                            |
1984 |                                                            | 24
     +------------------------------------------------------------\

The Screen Map is POKEd with a Screen Display Code value (see Appendix D).
For example:
     POKE 1024,13
will display the letter {M} in the upper-left corner of the screen.


F.2 COLOR MEMORY MAP

                                 COLUMN                             55335
      0             10             20             30            39 /
     +------------------------------------------------------------/
55296|                                                            |  0
55336|                                                            |
55376|                                                            |
55416|                                                            |
55456|                                                            |
55496|                                                            |
55536|                                                            |
55576|                                                            |
55616|                                                            |
55656|                                                            |
55696|                                                            | 10
55736|                                                            |
55776|                                                            |   ROW
55816|                                                            |
55856|                                                            |
55896|                                                            |
55936|                                                            |
55976|                                                            |
56016|                                                            |
56056|                                                            |
56096|                                                            | 20
56136|                                                            |
56176|                                                            |
56216|                                                            |
56256|                                                            | 24
     +------------------------------------------------------------\
                                                                   56295

If the color map is POKEd with a color value, this changes the character
color. For example:
     POKE 55296,1
will change the letter {M} inserted above from light green to white.


F.3 Color Codes - 40 Columns

0  Black         8  Orange
1  White         9  Brown
2  Red          10  Light Red
3  Cyan         11  Dark Gray
4  Purple       12  Medium Gray
5  Green        13  Light Green
6  Blue         14  Light Blue
7  Yellow       15  Light Gray


  Border Control Memory 53280
Background Control Memory 53281