You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
918 B
41 lines
918 B
/* ascii.c - display ascii table
|
|
*
|
|
* Copyright 2017 Rob Landley <rob@landley.net>
|
|
*
|
|
* Technically 7-bit ASCII is ANSI X3.4-1986, a standard available as
|
|
* INCITS 4-1986[R2012] on ansi.org, but they charge for it.
|
|
|
|
USE_ASCII(NEWTOY(ascii, 0, TOYFLAG_USR|TOYFLAG_BIN))
|
|
|
|
config ASCII
|
|
bool "ascii"
|
|
default y
|
|
help
|
|
usage: ascii
|
|
|
|
Display ascii character set.
|
|
*/
|
|
|
|
#include "toys.h"
|
|
|
|
void ascii_main(void)
|
|
{
|
|
char *low="NULSOHSTXETXEOTENQACKBELBS HT LF VT FF CR SO SI DLEDC1DC2DC3DC4"
|
|
"NAKSYNETBCANEM SUBESCFS GS RS US ";
|
|
int x, y;
|
|
|
|
for (x = 0; x<8; x++) printf("Dec Hex%*c", 2+2*(x<2)+(x>4), ' ');
|
|
xputc('\n');
|
|
for (y=0; y<=15; y++) {
|
|
for (x=0; x<8; x++) {
|
|
int i = x*16+y;
|
|
|
|
if (i>95 && i<100) putchar(' ');
|
|
printf("% 3d %02X ", i, i);
|
|
if (i<32 || i==127) printf("%.3s ", (i==127) ? "DEL" : low+3*i);
|
|
else printf("%c ", i);
|
|
}
|
|
xputc('\n');
|
|
}
|
|
}
|