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langs a-z

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Ingy döt Net 2013-04-10 22:43:41 -07:00
parent db842d013d
commit d066446780
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Task/Morse-code/XPL0/morse-code.xpl0 Normal file
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code ChOut=8, CrLf=9, Sound=39;
string 0; \use zero-terminated strings
proc Morse(Msg); \Output Msg string as audible International Morse code
char Msg;
char C, D;
int Code, Vol;
[Code:= [" ", \space
".-.-..",".-..-.", " ", "...-..-"," ", \!"#$%
"----.", ".----.", "-.--.-", "---..", " ", \&'()*
".-.-.", "--..--", "-....-", ".-.-.-", "-..-.", \+,-./
"-----", ".----", "..---", "...--", "....-", \01234
".....", "-....", "--...", "---..", "----.", \56789
"---...","-.-.-.", " ", "-...-", " ", \:;<=>
"..--..",".--.-.", \?@
".-", "-...", "-.-.", "-..", ".", \ABCDE
"..-.", "--.", "....", "..", ".---", \FGHIJ
"-.-", ".-..", "--", "-.", "---", \KLMNO
".--.", "--.-", ".-.", "...", "-", \PQRST
"..-", "...-", ".--", "-..-", "-.--", \UVWXY
"--.."]; \Z
Sound(0, 1, 1); \sync, for consistent durations
repeat C:= Msg(0); Msg:= Msg+1; \get character from message
ChOut(0, C); \show the character
if C>=^a & C<=^z then C:= C-$20; \convert letters to uppercase
Vol:= 1; \assume volume is on (not space)
if C>=$21 & C<=^Z then D:= Code(C-$20) \convert characters to code
else [D:= Code(0); Vol:= 0]; \space (or unsupported char)
repeat Sound(Vol, if D(0)=^- then 3 else 1, 1190000/600); \600 Hz
Sound(0, 1, 1); \gap between . and -
ChOut(0, D(0)); \show dots and dashes
D:= D+1; \next dot or dash for character
until D(0) = 0; \string terminator
Sound(0, 2, 1); \gap between letters (2+1=3)
ChOut(0, ^ ); \show gap
until Msg(0) = 0; \string terminator
];
[Morse("SOS SOS SOS "); \something easy to recognize
CrLf(0);
Morse("Hello, world!");
]