Most of the characters with values between 128 and 255 are just the inverse characters of the ones with values between 0 and 127. In other words, add 128 to a character value and you get that character in inverse video, with the following exceptions:

Character	ATASCII
RETURN	155
Shift-DELETE	156
Shift-INSERT	157
Ctrl-TAB	158
Shift-TAB	159
Ctrl-2	253
Ctrl-DELETE	254
Ctrl-INSERT	255

Character	Internal	ATASCII	Screen Representation
space	0	32
!	1	33
"	2	34
#	3	35
$	4	36
%	5	37
&	6	38
:	7	39
(	8	40
)	9	41
*	10	42
+	11	43
,	12	44
-	13	45
.	14	46
/	15	47
0	16	48
1	17	49
2	18	50
3	19	51
4	20	52
4	21	53
6	22	54

Character	Internal	ATASCII	Screen Representation
7	23	55
8	24	56
9	25	57
:	26	58
;	27	59
<	28	60
=	29	61
>	30	62
?	31	63
@	32	64
A	33	65
B	34	66
C	35	67
D	36	68
E	37	69
F	38	70
G	39	71
H	40	72
I	41	73
J	42	74
K	43	75
L	44	76
M	45	77

Character	Internal	ATASCII	Screen Representation
N	46	78
O	47	79
P	48	80
Q	49	81
R	50	82
S	51	83
T	52	84
U	53	85
V	54	86
W	55	87
X	56	88
Y	57	89
Z	58	90
[	59	91
\	60	92
]	61	93
↑	62	94
←	63	95
Ctrl-,	64	0
Ctrl-A	65	1
Ctrl-B	66	2
Ctrl-C	67	3
Ctrl-D	68	4

Character	Internal	ATASCII	Screen Representation
Ctrl-E	69	5
Ctrl-F	70	6
Ctrl-G	71	7
Ctrl-H	72	8
Ctrl-I	73	9
Ctrl-J	74	10
Ctrl-K	75	11
Ctrl-L	76	12
Ctrl-M	77	13
Ctrl-N	78	14
Ctrl-O	79	15
Ctrl-P	80	16
Ctrl-Q	81	17
Ctrl-R	82	18
Ctrl-S	83	19
Ctrl-T	84	20
Ctrl-U	85	21
Ctrl-V	86	22
Ctrl-W	87	23
Ctrl-X	88	24
Ctrl-Y	89	25
Ctrl-Z	90	26
ESC	91	27

Character	Internal	ATASCII	Screen Representation
UP ARROW	93	28
DOWN ARROW	93	29
LEFT ARROW	94	30
RIGHT ARROW	95	31
Ctrl-.	96	96
a	97	97
b	98	98
c	99	99
d	100	100
e	101	101
f	102	102
g	103	103
h	104	104
i	105	105
j	106	106
k	107	107
l	108	108
m	109	109
n	110	110
o	111	111
p	112	112
q	113	113
r	114	114

Character	Internal	ATASCII	Screen Representation
s	115	115
t	116	116
u	117	117
v	118	118
w	119	119
x	120	120
y	121	121
z	122	122
CRTL-;	123	123
Shift-=	124	124
CLEAR	125	125
DELETE	126	126
TAB	127	127

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