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Annotation of xinu/sys/vcuputc.c, revision 1.1.1.1

1.1       root        1: /* vcuputc.c - vcuputc */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <tty.h>
                      6: #include <io.h>
                      7: #include <vcu.h>
                      8: #include <procreg.h>
                      9: 
                     10: /*------------------------------------------------------------------------
                     11:  *  vcuputc - write one character to vax console device
                     12:  *------------------------------------------------------------------------
                     13:  */
                     14: vcuputc(devptr, ch )
                     15: struct devsw   *devptr;
                     16: char   ch;
                     17: {
                     18:        struct  tty   *iptr;
                     19:        PStype  ps;
                     20: 
                     21:        iptr = &tty[devptr->dvminor];
                     22:         if ( ch==NEWLINE && iptr->ocrlf )
                     23:                 vcuputc(devptr,RETURN);
                     24:        disable(ps);
                     25:        wait(iptr->osem);               /* wait for space in queue      */
                     26:        iptr->obuff[iptr->ohead++] = ch;
                     27:        if (iptr->ohead >= OBUFLEN)
                     28:                iptr->ohead = 0;
                     29:        mtpr(VCUTXCSENBL, TXCS);
                     30:        restore(ps);
                     31:        return(OK);
                     32: }

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