if (ep==arg) badusage("syntactically incorrect range");
}
if (*ep) badusage("syntactically incorrect picno or range");
- if (first<0 || last>COLUMNS*ROWS-1 || first<last)
+ if (first<0 || last>COLUMNS*ROWS-1 || first>last)
badusage("picno or range out of permissible range");
for (; first<=last; first++) {
if (yesses.lin[first]) badusage("one pic specified more than once");
yesses.lin[first]= 1;
}
}
- fd= open(parport, O_RDWR);
- if (fd<0) { perror(parport); exit(-1); }
+ if (!strcmp(parport,"stdin")) {
+ fd= 0;
+ } else {
+ fd= open(parport, O_RDWR);
+ if (fd<0) { perror(parport); exit(-1); }
+ }
setvbuf(stdout,0,_IONBF,0);
for (row=0; row<ROWS; row++) {
v= 0;
for (col=0; col<COLUMNS; col++)
- v |= yesses.rect[col][row] ? (1<<col) : 0;
+ v |= yesses.rect[col][row] ? 0 : (1<<col);
wpause(PPWDATA, v | 0x80);
wpause(PPWDATA, v); /* SEL_CLK ~|_ shifts */
}