Commodore MPS 1200 - Reverse Print

Reverse Print
Format
BASIC
Hex
OR
BASIC
Hex
ON
chr$(27) "r"
1B 52
chr$(27) chr$(126) "21"
1B 7E 32 31
OFF
chr$(27) "t"
1B 54
chr$(27) chr$(126) "20"
1 B 7E 32 30
~~~~~~~_~~_~~~~_~~!L ________________________________________________________ _
Format ON OFF
BASIC chr$(18) chr$(146)
H9 12 92
There are two escape sequences you can use to access reverse print.
One is ESC r (make sure it's a lower case Ur") and the other
command is ESC-21. The character before the 21 is called a
"tilde." This symbol probably isn't on your keyboard, so you must
use its ASCII code form: chr$(126). This version of the reverse
print command uses 1 and 0 as its on and off switches. Sending
ESC-21 turns on reverse print; sending ESC-20 turns off reverse
print.
You can create many special effects using reverse print with
some ingenuity and a little programming.
In Commodore mode, you can also turn reverse on and off by
sending the control codes chr$(18) to turn reverse printing on and
chr$(146) to return to normal non-reversed printing.
5 Dpen 1,4,7
10 for n=32 to 56:a$=a$+chr$(n)~next n
2(' pt'int#l., c:r', 1"$ (27) ; cht··$ (1:,:6) "::::-::1."; "F(e\lE·t···!:;e pl····int"
25 pr'int#l.!a$
30 pl·'int#l,c:ht'~~c::~7) ;c::ht····,td12,':d ":20"; "Not t'evet'se pt'int"
35 pt'int#:l, ;"'1$
40 c]. C)~;;e 1
Revet'se P t' 1 n t
, "# $ !. ,~, ' ( ) * + , -. / (1 1 :: -:; 4 5 6 7 8
Not reverse print
~ "#$I.~,' () *+, -./(112345678
3-20