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APPENDIX D

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SCREEN DISPLAY CODES - 40 Columns

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The following chart lists all of the characters built into the Commodore screen character sets. It shows which numbers should be POKED into screen memory (locations 1024-2023) to get a desired character on the 40-column screen (Remember, to set color memory, use locations 55296 to 56295). Also shown is which character corresponds to a number PEEKed from the screen.

Two character sets are available. Both are available simultaneously in 80-column mode, but only is available at a time on the 40-column screen. The sets are switched by holding down the {shift} and {C=} (Commodore) keys simultaneously.

From BASIC, PRINT CHR$(142) will switch to upper case/graphics mode and PRINT CHR$(14) will switch to upper/lower case mode.

Any number on the chart may also be displayed in REVERSE. The reverse character code may be obtained by adding 128 to the values shown.

SET 1 SET 2 POKE SET 1 SET 2 POKE
@ 0 64
A a 1 A 65
B b 2 B 66
C c 3 C 67
D d 4 D 68
E e 5 E 69
F f 6 F 70
G g 7 G 71
H h 8 H 72
I i 9 I 73
J j 10 J 74
K k 11 K 75
L l 12 L 76
M m 13 M 77
N n 14 N 78
O o 15 O 79
P p 16 P 80
Q q 17 Q 81
R r 18 R 82
S s 19 S 83
T t 20 T 84
U u 21 U 85
V v 22 V 86
W w 23 W 87
X x 24 X 88
Y y 25 Y 89
Z z 26 Z 90
[ 27 91
{pound} 28 92
] 29 93
^ 30 {pi} 94
{left arrow} 31 95
{space} 32 {space} 96
! 33 97
" 34 98
# 35 99
$ 36 100
% 37 101
& 38 102
' 39 103
( 40 104
) 41 105
* 42 106
+ 43 107
, 44 108
- 45 109
. 46 110
/ 47 111
0 48 112
1 49 113
2 50 114
3 51 115
4 52 116
5 53 117
6 54 118
7 55 119
8 56 120
9 57 121
: 58 122
; 59 123
< 60 124
= 61 125
> 62 126
? 63 127

Codes from 128-255 are reversed images of codes 0-127.

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