xref: /netbsd-src/sys/arch/amiga/dev/ite.c (revision 3816d47b2c42fcd6e549e3407f842a5b1a1d23ad)
1 /*	$NetBSD: ite.c,v 1.89 2009/10/26 19:16:54 cegger Exp $ */
2 
3 /*
4  * Copyright (c) 1990 The Regents of the University of California.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * the Systems Programming Group of the University of Utah Computer
9  * Science Department.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  *	from: Utah Hdr: ite.c 1.1 90/07/09
36  *	@(#)ite.c 7.6 (Berkeley) 5/16/91
37  */
38 /*
39  * Copyright (c) 1988 University of Utah.
40  *
41  * This code is derived from software contributed to Berkeley by
42  * the Systems Programming Group of the University of Utah Computer
43  * Science Department.
44  *
45  * Redistribution and use in source and binary forms, with or without
46  * modification, are permitted provided that the following conditions
47  * are met:
48  * 1. Redistributions of source code must retain the above copyright
49  *    notice, this list of conditions and the following disclaimer.
50  * 2. Redistributions in binary form must reproduce the above copyright
51  *    notice, this list of conditions and the following disclaimer in the
52  *    documentation and/or other materials provided with the distribution.
53  * 3. All advertising materials mentioning features or use of this software
54  *    must display the following acknowledgement:
55  *      This product includes software developed by the University of
56  *      California, Berkeley and its contributors.
57  * 4. Neither the name of the University nor the names of its contributors
58  *    may be used to endorse or promote products derived from this software
59  *    without specific prior written permission.
60  *
61  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
62  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
63  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
64  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
65  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
66  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
67  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
68  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
69  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
70  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
71  * SUCH DAMAGE.
72  *
73  *	from: Utah Hdr: ite.c 1.1 90/07/09
74  *	@(#)ite.c 7.6 (Berkeley) 5/16/91
75  */
76 
77 /*
78  * ite - bitmaped terminal.
79  * Supports VT200, a few terminal features will be unavailable until
80  * the system actually probes the device (i.e. not after consinit())
81  */
82 
83 #include "opt_ddb.h"
84 
85 #include <sys/cdefs.h>
86 __KERNEL_RCSID(0, "$NetBSD: ite.c,v 1.89 2009/10/26 19:16:54 cegger Exp $");
87 
88 #include <sys/param.h>
89 #include <sys/kernel.h>
90 #include <sys/device.h>
91 #include <sys/fcntl.h>
92 #include <sys/malloc.h>
93 #include <sys/ioctl.h>
94 #include <sys/tty.h>
95 #include <sys/termios.h>
96 #include <sys/systm.h>
97 #include <sys/callout.h>
98 #include <sys/proc.h>
99 #include <dev/cons.h>
100 #include <sys/kauth.h>
101 #include <amiga/amiga/cc.h>
102 #include <amiga/amiga/color.h>	/* DEBUG */
103 #include <amiga/amiga/custom.h>	/* DEBUG */
104 #include <amiga/amiga/device.h>
105 #include <amiga/amiga/isr.h>
106 #include <amiga/dev/iteioctl.h>
107 #include <amiga/dev/itevar.h>
108 #include <amiga/dev/kbdmap.h>
109 #include <amiga/dev/grfioctl.h>
110 #include <amiga/dev/grfvar.h>
111 
112 #include <machine/cpu.h>	/* for is_draco() */
113 
114 #include <sys/conf.h>
115 
116 #include "grfcc.h"
117 #include "ite.h"
118 
119 /*
120  * XXX go ask sys/kern/tty.c:ttselect()
121  */
122 
123 #define ITEUNIT(dev)	(minor(dev))
124 
125 #define SUBR_INIT(ip)		(ip)->grf->g_iteinit(ip)
126 #define SUBR_DEINIT(ip)		(ip)->grf->g_itedeinit(ip)
127 #define SUBR_PUTC(ip,c,dy,dx,m)	(ip)->grf->g_iteputc(ip,c,dy,dx,m)
128 #define SUBR_CURSOR(ip,flg)	(ip)->grf->g_itecursor(ip,flg)
129 #define SUBR_CLEAR(ip,sy,sx,h,w)	(ip)->grf->g_iteclear(ip,sy,sx,h,w)
130 #define SUBR_SCROLL(ip,sy,sx,count,dir)	\
131     (ip)->grf->g_itescroll(ip,sy,sx,count,dir)
132 
133 int	start_repeat_timeo = 30;	/* first repeat after x s/100 */
134 int	next_repeat_timeo = 10;		/* next repeat after x s/100 */
135 
136 int	ite_default_wrap = 1;		/* you want vtxxx-nam, binpatch */
137 
138 struct	ite_softc con_itesoftc;
139 u_char	cons_tabs[MAX_TABS];
140 
141 struct ite_softc *kbd_ite;
142 
143 /* audio bell stuff */
144 u_int bvolume = 10;
145 u_int bpitch = 660;
146 u_int bmsec = 75;
147 
148 static char *bsamplep;
149 static char sample[20] = {
150 	0,39,75,103,121,127,121,103,75,39,0,
151 	-39,-75,-103,-121,-127,-121,-103,-75,-39
152 };
153 
154 static callout_t repeat_ch;
155 
156 void iteputchar(int c, struct ite_softc *ip);
157 void ite_putstr(const char * s, int len, dev_t dev);
158 void iteattach(struct device *, struct device *, void *);
159 int itematch(struct device *, struct cfdata *, void *);
160 static void iteprecheckwrap(struct ite_softc *);
161 static void itecheckwrap(struct ite_softc *);
162 struct ite_softc *getitesp(dev_t);
163 void init_bell(void);
164 void ite_bell(void);
165 void itecnpollc(dev_t, int);
166 static void repeat_handler(void *);
167 inline static void ite_sendstr(const char *);
168 static void alignment_display(struct ite_softc *);
169 inline static void snap_cury(struct ite_softc *);
170 inline static void ite_dnchar(struct ite_softc *, int);
171 inline static void ite_inchar(struct ite_softc *, int);
172 inline static void ite_clrtoeol(struct ite_softc *);
173 inline static void ite_clrtobol(struct ite_softc *);
174 inline static void ite_clrline(struct ite_softc *);
175 inline static void ite_clrtoeos(struct ite_softc *);
176 inline static void ite_clrtobos(struct ite_softc *);
177 inline static void ite_clrscreen(struct ite_softc *);
178 inline static void ite_dnline(struct ite_softc *, int);
179 inline static void ite_inline(struct ite_softc *, int);
180 inline static void ite_lf(struct ite_softc *);
181 inline static void ite_crlf(struct ite_softc *);
182 inline static void ite_cr(struct ite_softc *);
183 inline static void ite_rlf(struct ite_softc *);
184 inline static int atoi(const char *);
185 inline static int ite_argnum(struct ite_softc *);
186 inline static int ite_zargnum(struct ite_softc *);
187 
188 CFATTACH_DECL(ite, sizeof(struct ite_softc),
189     itematch, iteattach, NULL, NULL);
190 
191 extern struct cfdriver ite_cd;
192 
193 dev_type_open(iteopen);
194 dev_type_close(iteclose);
195 dev_type_read(iteread);
196 dev_type_write(itewrite);
197 dev_type_ioctl(iteioctl);
198 dev_type_tty(itetty);
199 dev_type_poll(itepoll);
200 
201 const struct cdevsw ite_cdevsw = {
202 	iteopen, iteclose, iteread, itewrite, iteioctl,
203 	nostop, itetty, itepoll, nommap, ttykqfilter, D_TTY
204 };
205 
206 int
207 itematch(struct device *pdp, struct cfdata *cfp, void *auxp)
208 {
209 	struct grf_softc *gp;
210 	int maj;
211 
212 	gp = auxp;
213 
214 	/*
215 	 * XXX
216 	 * normally this would be done in attach, however
217 	 * during early init we do not have a device pointer
218 	 * and thus no unit number.
219 	 */
220 	maj = cdevsw_lookup_major(&ite_cdevsw);
221 	gp->g_itedev = makedev(maj, cfp->cf_unit);
222 	return(1);
223 }
224 
225 void
226 iteattach(struct device *pdp, struct device *dp, void *auxp)
227 {
228 	struct grf_softc *gp;
229 	struct ite_softc *ip;
230 	int s;
231 
232 	gp = (struct grf_softc *)auxp;
233 	if (dp) {
234 		ip = (struct ite_softc *)dp;
235 
236 		s = spltty();
237 		if (con_itesoftc.grf != NULL &&
238 		    con_itesoftc.grf->g_unit == gp->g_unit) {
239 			/*
240 			 * console reinit copy params over.
241 			 * and console always gets keyboard
242 			 */
243 			memcpy(&ip->grf, &con_itesoftc.grf,
244 			    (char *)&ip[1] - (char *)&ip->grf);
245 			con_itesoftc.grf = NULL;
246 			kbd_ite = ip;
247 		}
248 		ip->grf = gp;
249 		splx(s);
250 
251 		iteinit(gp->g_itedev);
252 		printf(": rows %d cols %d", ip->rows, ip->cols);
253 		printf(" repeat at (%d/100)s next at (%d/100)s",
254 		    start_repeat_timeo, next_repeat_timeo);
255 
256 		if (kbd_ite == NULL)
257 			kbd_ite = ip;
258 		if (kbd_ite == ip)
259 			printf(" has keyboard");
260 		printf("\n");
261 		ip->flags |= ITE_ATTACHED;
262 	} else {
263 		if (con_itesoftc.grf != NULL &&
264 		    con_itesoftc.grf->g_conpri > gp->g_conpri)
265 			return;
266 		con_itesoftc.grf = gp;
267 		con_itesoftc.tabs = cons_tabs;
268 	}
269 }
270 
271 struct ite_softc *
272 getitesp(dev_t dev)
273 {
274 	if (amiga_realconfig && con_itesoftc.grf == NULL)
275 		return(device_lookup_private(&ite_cd, ITEUNIT(dev)));
276 
277 	if (con_itesoftc.grf == NULL)
278 		panic("no ite_softc for console");
279 	return(&con_itesoftc);
280 }
281 
282 /*
283  * cons.c entry points into ite device.
284  */
285 
286 /*
287  * Return a priority in consdev->cn_pri field highest wins.  This function
288  * is called before any devices have been probed.
289  */
290 void
291 itecnprobe(struct consdev *cd)
292 {
293 	/*
294 	 * bring graphics layer up.
295 	 */
296 	config_console();
297 
298 	/*
299 	 * return priority of the best ite (already picked from attach)
300 	 * or CN_DEAD.
301 	 */
302 	if (con_itesoftc.grf == NULL)
303 		cd->cn_pri = CN_DEAD;
304 	else {
305 		cd->cn_pri = con_itesoftc.grf->g_conpri;
306 		cd->cn_dev = con_itesoftc.grf->g_itedev;
307 	}
308 }
309 
310 /* audio bell stuff */
311 void
312 init_bell(void)
313 {
314 	if (bsamplep != NULL)
315 		return;
316 	bsamplep = alloc_chipmem(20);
317 	if (bsamplep == NULL)
318 		panic("no chipmem for ite_bell");
319 
320 	memcpy(bsamplep, sample, 20);
321 }
322 
323 void
324 ite_bell(void)
325 {
326 	u_int clock;
327 	u_int period;
328 	u_int count;
329 
330 	clock = 3579545; 	/* PAL 3546895 */
331 
332 	/*
333 	 * the number of clock ticks per sample byte must be > 124
334 	 * ergo bpitch must be < clock / 124*20
335 	 * i.e. ~1443, 1300 to be safe (PAL etc.). also not zero obviously
336 	 */
337 	period = clock / (bpitch * 20);
338 	count = bmsec * bpitch / 1000;
339 
340 	play_sample(10, PREP_DMA_MEM(bsamplep), period, bvolume, 0x3, count);
341 }
342 
343 void
344 itecninit(struct consdev *cd)
345 {
346 	struct ite_softc *ip;
347 
348 	ip = getitesp(cd->cn_dev);
349 	iteinit(cd->cn_dev);
350 	ip->flags |= ITE_ACTIVE | ITE_ISCONS;
351 
352 #ifdef DRACO
353 	if (!is_draco())
354 #endif
355 	init_bell();
356 }
357 
358 /*
359  * ite_cnfinish() is called in ite_init() when the device is
360  * being probed in the normal fasion, thus we can finish setting
361  * up this ite now that the system is more functional.
362  */
363 void
364 ite_cnfinish(struct ite_softc *ip)
365 {
366 	static int done;
367 
368 	if (done)
369 		return;
370 	done = 1;
371 }
372 
373 int
374 itecngetc(dev_t dev)
375 {
376 	int c;
377 
378 	/* XXX this should be moved */
379 	kbdenable();
380 	do {
381 		c = kbdgetcn();
382 		c = ite_cnfilter(c, ITEFILT_CONSOLE);
383 	} while (c == -1);
384 	return (c);
385 }
386 
387 void
388 itecnputc(dev_t dev, int c)
389 {
390 	static int paniced;
391 	struct ite_softc *ip;
392 	char ch;
393 
394 	ip = getitesp(dev);
395 	ch = c;
396 
397 	if (panicstr && !paniced &&
398 	    (ip->flags & (ITE_ACTIVE | ITE_INGRF)) != ITE_ACTIVE) {
399 		ite_on(dev, 3);
400 		paniced = 1;
401 	}
402 	iteputchar(ch, ip);
403 }
404 
405 void
406 itecnpollc(dev_t dev, int on)
407 {
408 }
409 
410 /*
411  * standard entry points to the device.
412  */
413 
414 /*
415  * iteinit() is the standard entry point for initialization of
416  * an ite device, it is also called from ite_cninit().
417  *
418  */
419 void
420 iteinit(dev_t dev)
421 {
422 	struct ite_softc *ip;
423 	static int kbdmap_loaded = 0;
424 
425 	ip = getitesp(dev);
426 	if (ip->flags & ITE_INITED)
427 		return;
428 	if (kbdmap_loaded == 0) {
429 		memcpy(&kbdmap, &ascii_kbdmap, sizeof(struct kbdmap));
430 		kbdmap_loaded = 1;
431 	}
432 
433 	callout_init(&repeat_ch, 0);
434 
435 	ip->cursorx = 0;
436 	ip->cursory = 0;
437 	SUBR_INIT(ip);
438 	SUBR_CURSOR(ip, DRAW_CURSOR);
439 	if (ip->tabs == NULL)
440 		ip->tabs = malloc(MAX_TABS * sizeof(u_char),M_DEVBUF,M_WAITOK);
441 	ite_reset(ip);
442 	ip->flags |= ITE_INITED;
443 }
444 
445 int
446 iteopen(dev_t dev, int mode, int devtype, struct lwp *l)
447 {
448 	struct ite_softc *ip;
449 	struct tty *tp;
450 	int error, first, unit;
451 
452 	unit = ITEUNIT(dev);
453 	first = 0;
454 
455 	if (unit >= ite_cd.cd_ndevs)
456 		return ENXIO;
457 	ip = getitesp(dev);
458 	if (ip == NULL)
459 		return ENXIO;
460 	if ((ip->flags & ITE_ATTACHED) == 0)
461 		return ENXIO;
462 
463 	if (ip->tp == NULL) {
464 		tp = ip->tp = ttymalloc();
465 		tty_attach(tp);
466 	} else
467 		tp = ip->tp;
468 
469 	if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
470 		return (EBUSY);
471 
472 	if ((ip->flags & ITE_ACTIVE) == 0) {
473 		ite_on(dev, 0);
474 		first = 1;
475 	}
476 	tp->t_oproc = itestart;
477 	tp->t_param = ite_param;
478 	tp->t_dev = dev;
479 	if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) {
480 		ttychars(tp);
481 		tp->t_iflag = TTYDEF_IFLAG;
482 		tp->t_oflag = TTYDEF_OFLAG;
483 		tp->t_cflag = TTYDEF_CFLAG;
484 		tp->t_lflag = TTYDEF_LFLAG;
485 		tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
486 		tp->t_state = TS_CARR_ON;
487 		ttsetwater(tp);
488 	}
489 	error = ttyopen(tp, 0, mode & O_NONBLOCK);
490 	if (error)
491 		goto bad;
492 
493 	error = tp->t_linesw->l_open(dev, tp);
494 	if (error)
495 		goto bad;
496 
497 	tp->t_winsize.ws_row = ip->rows;
498 	tp->t_winsize.ws_col = ip->cols;
499 	kbdenable();
500 	return (0);
501 bad:
502 	if (first)
503 		ite_off(dev, 0);
504 	return (error);
505 }
506 
507 int
508 iteclose(dev_t dev, int flag, int mode, struct lwp *l)
509 {
510 	struct tty *tp;
511 
512 	tp = getitesp(dev)->tp;
513 
514 	KDASSERT(tp);
515 	tp->t_linesw->l_close(tp, flag);
516 	ttyclose(tp);
517 	ite_off(dev, 0);
518 	return (0);
519 }
520 
521 int
522 iteread(dev_t dev, struct uio *uio, int flag)
523 {
524 	struct tty *tp;
525 
526 	tp = getitesp(dev)->tp;
527 
528 	KDASSERT(tp);
529 	return tp->t_linesw->l_read(tp, uio, flag);
530 }
531 
532 int
533 itewrite(dev_t dev, struct uio *uio, int flag)
534 {
535 	struct tty *tp;
536 
537 	tp = getitesp(dev)->tp;
538 
539 	KDASSERT(tp);
540 	return tp->t_linesw->l_write(tp, uio, flag);
541 }
542 
543 int
544 itepoll(dev_t dev, int events, struct lwp *l)
545 {
546 	struct tty *tp;
547 
548 	tp = getitesp(dev)->tp;
549 
550 	KDASSERT(tp);
551 	return ((*tp->t_linesw->l_poll)(tp, events, l));
552 }
553 
554 struct tty *
555 itetty(dev_t dev)
556 {
557 	return (getitesp(dev)->tp);
558 }
559 
560 int
561 iteioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
562 {
563 	struct iterepeat *irp;
564 	struct ite_softc *ip;
565 	struct itebell *ib;
566 	struct tty *tp;
567 	int error;
568 
569 	ip = getitesp(dev);
570 	tp = ip->tp;
571 
572 	KDASSERT(tp);
573 
574 	error = tp->t_linesw->l_ioctl(tp, cmd, addr, flag, l);
575 	if (error != EPASSTHROUGH)
576 		return (error);
577 	error = ttioctl(tp, cmd, addr, flag, l);
578 	if (error != EPASSTHROUGH)
579 		return (error);
580 
581 	switch (cmd) {
582 	case ITEIOCGBELL:
583 		ib = (struct itebell *)addr;
584 		ib->volume = bvolume;
585 		ib->pitch = bpitch;
586 		ib->msec = bmsec;
587 		return (0);
588 	case ITEIOCSBELL:
589 		ib = (struct itebell *)addr;
590 
591 		if (ib->pitch > MAXBPITCH || ib->pitch < MINBPITCH ||
592 		    ib->volume > MAXBVOLUME || ib->msec > MAXBTIME)
593 			return (EINVAL);
594 		bvolume = ib->volume;
595 		bpitch = ib->pitch;
596 		bmsec = ib->msec;
597 		return (0);
598 	case ITEIOCSKMAP:
599 		if (addr == 0)
600 			return(EFAULT);
601 		memcpy(&kbdmap, addr, sizeof(struct kbdmap));
602 		return(0);
603 	case ITEIOCGKMAP:
604 		if (addr == NULL)
605 			return(EFAULT);
606 		memcpy(addr, &kbdmap, sizeof(struct kbdmap));
607 		return(0);
608 	case ITEIOCGREPT:
609 		irp = (struct iterepeat *)addr;
610 		irp->start = start_repeat_timeo;
611 		irp->next = next_repeat_timeo;
612 		return (0);
613 	case ITEIOCSREPT:
614 		irp = (struct iterepeat *)addr;
615 		if (irp->start < ITEMINREPEAT && irp->next < ITEMINREPEAT)
616 			return(EINVAL);
617 		start_repeat_timeo = irp->start;
618 		next_repeat_timeo = irp->next;
619 		return(0);
620 	}
621 #if NGRFCC > 0
622 	/* XXX */
623 	if (minor(dev) == 0) {
624 		error = ite_grf_ioctl(ip, cmd, addr, flag, l);
625 		if (error >= 0)
626 			return (error);
627 	}
628 #endif
629 	return (EPASSTHROUGH);
630 }
631 
632 void
633 itestart(struct tty *tp)
634 {
635 	struct clist *rbp;
636 	struct ite_softc *ip;
637 	u_char buf[ITEBURST];
638 	int s, len;
639 
640 	ip = getitesp(tp->t_dev);
641 
642 	KDASSERT(tp);
643 
644 	s = spltty(); {
645 		if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
646 			goto out;
647 
648 		tp->t_state |= TS_BUSY;
649 		rbp = &tp->t_outq;
650 
651 		len = q_to_b(rbp, buf, ITEBURST);
652 	} splx(s);
653 
654 	/* Here is a really good place to implement pre/jumpscroll() */
655 	ite_putstr(buf, len, tp->t_dev);
656 
657 	s = spltty(); {
658 		tp->t_state &= ~TS_BUSY;
659 		/* we have characters remaining. */
660 		if (ttypull(tp)) {
661 			tp->t_state |= TS_TIMEOUT;
662 			callout_schedule(&tp->t_rstrt_ch, 1);
663 		}
664 	}
665  out:
666 	splx(s);
667 }
668 
669 void
670 ite_on(dev_t dev, int flag)
671 {
672 	struct ite_softc *ip;
673 	int unit;
674 
675 	unit = ITEUNIT(dev);
676 	ip = getitesp(dev);
677 
678 	/* force ite active, overriding graphics mode */
679 	if (flag & 1) {
680 		ip->flags |= ITE_ACTIVE;
681 		ip->flags &= ~(ITE_INGRF | ITE_INITED);
682 	}
683 	/* leave graphics mode */
684 	if (flag & 2) {
685 		ip->flags &= ~ITE_INGRF;
686 		if ((ip->flags & ITE_ACTIVE) == 0)
687 			return;
688 	}
689 	ip->flags |= ITE_ACTIVE;
690 	if (ip->flags & ITE_INGRF)
691 		return;
692 	iteinit(dev);
693 }
694 
695 void
696 ite_off(dev_t dev, int flag)
697 {
698 	struct ite_softc *ip;
699 
700 	ip = getitesp(dev);
701 	if (flag & 2)
702 		ip->flags |= ITE_INGRF;
703 	if ((ip->flags & ITE_ACTIVE) == 0)
704 		return;
705 	if ((flag & 1) ||
706 	    (ip->flags & (ITE_INGRF | ITE_ISCONS | ITE_INITED)) == ITE_INITED)
707 		SUBR_DEINIT(ip);
708 	/* XXX hmm grfon() I think wants this to  go inactive. */
709 	if ((flag & 2) == 0)
710 		ip->flags &= ~ITE_ACTIVE;
711 }
712 
713 /* XXX called after changes made in underlying grf layer. */
714 /* I want to nuke this */
715 void
716 ite_reinit(dev_t dev)
717 {
718 	struct ite_softc *ip;
719 
720 	ip = getitesp(dev);
721 	ip->flags &= ~ITE_INITED;
722 	iteinit(dev);
723 }
724 
725 int
726 ite_param(struct tty *tp, struct termios *t)
727 {
728 	tp->t_ispeed = t->c_ispeed;
729 	tp->t_ospeed = t->c_ospeed;
730 	tp->t_cflag = t->c_cflag;
731 	return (0);
732 }
733 
734 void
735 ite_reset(struct ite_softc *ip)
736 {
737 	int i;
738 
739 	ip->curx = 0;
740 	ip->cury = 0;
741 	ip->attribute = ATTR_NOR;
742 	ip->save_curx = 0;
743 	ip->save_cury = 0;
744 	ip->save_attribute = ATTR_NOR;
745 	ip->ap = ip->argbuf;
746 	ip->emul_level = 0;
747 	ip->eightbit_C1 = 0;
748 	ip->top_margin = 0;
749 	ip->bottom_margin = ip->rows - 1;
750 	ip->inside_margins = 0;
751 	ip->linefeed_newline = 0;
752 	ip->auto_wrap = ite_default_wrap;
753 	ip->cursor_appmode = 0;
754 	ip->keypad_appmode = 0;
755 	ip->imode = 0;
756 	ip->key_repeat = 1;
757 	memset(ip->tabs, 0, ip->cols);
758 	for (i = 0; i < ip->cols; i++)
759 		ip->tabs[i] = ((i & 7) == 0);
760 }
761 
762 /*
763  * has to be global because of the shared filters.
764  */
765 static u_char key_mod;
766 static u_char last_dead;
767 
768 /* Used in console at startup only */
769 int
770 ite_cnfilter(u_char c, enum caller caller)
771 {
772 	struct key key;
773 	u_char code, up, mask;
774 	int s, i;
775 
776 	up = c & 0x80 ? 1 : 0;
777 	c &= 0x7f;
778 	code = 0;
779 
780 	s = spltty();
781 
782 	i = (int)c - KBD_LEFT_SHIFT;
783 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
784 		mask = 1 << i;
785 		if (up)
786 			key_mod &= ~mask;
787 		else
788 			key_mod |= mask;
789 		splx(s);
790 		return -1;
791 	}
792 
793 	if (up) {
794 		splx(s);
795 		return -1;
796 	}
797 
798 	/* translate modifiers */
799 	if (key_mod & KBD_MOD_SHIFT) {
800 		if (key_mod & KBD_MOD_ALT)
801 			key = kbdmap.alt_shift_keys[c];
802 		else
803 			key = kbdmap.shift_keys[c];
804 	} else if (key_mod & KBD_MOD_ALT)
805 		key = kbdmap.alt_keys[c];
806 	else {
807 		key = kbdmap.keys[c];
808 		/* if CAPS and key is CAPable (no pun intended) */
809 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
810 			key = kbdmap.shift_keys[c];
811 	}
812 	code = key.code;
813 
814 	/* if string return */
815 	if (key.mode & (KBD_MODE_STRING | KBD_MODE_KPAD)) {
816 		splx(s);
817 		return -1;
818 	}
819 	/* handle dead keys */
820 	if (key.mode & KBD_MODE_DEAD) {
821 		/* if entered twice, send accent itself */
822 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
823 			last_dead = 0;
824 		else {
825 			last_dead = key.mode & KBD_MODE_ACCMASK;
826 			splx(s);
827 			return -1;
828 		}
829 	}
830 	if (last_dead) {
831 		/* can't apply dead flag to string-keys */
832 		if (code >= '@' && code < 0x7f)
833 			code =
834 			    acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
835 		last_dead = 0;
836 	}
837 	if (key_mod & KBD_MOD_CTRL)
838 		code &= 0x1f;
839 	if (key_mod & KBD_MOD_META)
840 		code |= 0x80;
841 
842 	/* do console mapping. */
843 	code = code == '\r' ? '\n' : code;
844 
845 	splx(s);
846 	return (code);
847 }
848 
849 /* And now the old stuff. */
850 
851 /* these are used to implement repeating keys.. */
852 static u_char last_char;
853 static u_char tout_pending;
854 
855 /*ARGSUSED*/
856 static void
857 repeat_handler(void *arg)
858 {
859 	tout_pending = 0;
860 	if (last_char)
861 		ite_filter(last_char, ITEFILT_REPEATER);
862 }
863 
864 void
865 ite_filter(u_char c, enum caller caller)
866 {
867 	struct tty *kbd_tty;
868 	u_char code, *str, up, mask;
869 	struct key key;
870 	int s, i;
871 
872 	if (kbd_ite == NULL || kbd_ite->tp == NULL)
873 		return;
874 
875 	kbd_tty = kbd_ite->tp;
876 
877 	/* have to make sure we're at spltty in here */
878 	s = spltty();
879 
880 	up = c & 0x80 ? 1 : 0;
881 	c &= 0x7f;
882 	code = 0;
883 
884 	i = (int)c - KBD_LEFT_SHIFT;
885 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
886 		mask = 1 << i;
887 		if (up)
888 			key_mod &= ~mask;
889 		else
890 			key_mod |= mask;
891 		splx(s);
892 		return;
893 	}
894 	/* stop repeating on up event */
895 	if (up) {
896 		if (tout_pending) {
897 			callout_stop(&repeat_ch);
898 			tout_pending = 0;
899 			last_char = 0;
900 		}
901 		splx(s);
902 		return;
903 	} else if (tout_pending && last_char != c) {
904 		/* different character, stop also */
905 		callout_stop(&repeat_ch);
906 		tout_pending = 0;
907 		last_char = 0;
908 	}
909 	/* Safety button, switch back to ascii keymap. */
910 	if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x50) {
911 		memcpy(&kbdmap, &ascii_kbdmap, sizeof(struct kbdmap));
912 
913 		splx(s);
914 		return;
915 #ifdef DDB
916 	} else if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x59) {
917 		Debugger();
918 		splx(s);
919 		return;
920 #endif
921 	}
922 	/* translate modifiers */
923 	if (key_mod & KBD_MOD_SHIFT) {
924 		if (key_mod & KBD_MOD_ALT)
925 			key = kbdmap.alt_shift_keys[c];
926 		else
927 			key = kbdmap.shift_keys[c];
928 	} else if (key_mod & KBD_MOD_ALT)
929 		key = kbdmap.alt_keys[c];
930 	else {
931 		key = kbdmap.keys[c];
932 		/* if CAPS and key is CAPable (no pun intended) */
933 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
934 			key = kbdmap.shift_keys[c];
935 	}
936 	code = key.code;
937 
938 	/*
939 	 * arrange to repeat the keystroke. By doing this at the level
940 	 * of scan-codes, we can have function keys, and keys that
941 	 * send strings, repeat too. This also entitles an additional
942 	 * overhead, since we have to do the conversion each time, but
943 	 * I guess that's ok.
944 	 */
945 	if (!tout_pending && caller == ITEFILT_TTY && kbd_ite->key_repeat) {
946 		tout_pending = 1;
947 		last_char = c;
948 		callout_reset(&repeat_ch,
949 		    start_repeat_timeo * hz / 100, repeat_handler, NULL);
950 	} else if (!tout_pending && caller == ITEFILT_REPEATER &&
951 	    kbd_ite->key_repeat) {
952 		tout_pending = 1;
953 		last_char = c;
954 		callout_reset(&repeat_ch,
955 		    next_repeat_timeo * hz / 100, repeat_handler, NULL);
956 	}
957 	/* handle dead keys */
958 	if (key.mode & KBD_MODE_DEAD) {
959 		/* if entered twice, send accent itself */
960 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
961 			last_dead = 0;
962 		else {
963 			last_dead = key.mode & KBD_MODE_ACCMASK;
964 			splx(s);
965 			return;
966 		}
967 	}
968 	if (last_dead) {
969 		/* can't apply dead flag to string-keys */
970 		if (!(key.mode & KBD_MODE_STRING) && code >= '@' &&
971 		    code < 0x7f)
972 			code = acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
973 		last_dead = 0;
974 	}
975 	/* if not string, apply META and CTRL modifiers */
976 	if (!(key.mode & KBD_MODE_STRING)
977 	    && (!(key.mode & KBD_MODE_KPAD) ||
978 		(kbd_ite && !kbd_ite->keypad_appmode))) {
979 		if (key_mod & KBD_MOD_CTRL)
980 			code &= 0x1f;
981 		if (key_mod & KBD_MOD_META)
982 			code |= 0x80;
983 	} else if ((key.mode & KBD_MODE_KPAD) &&
984 	    (kbd_ite && kbd_ite->keypad_appmode)) {
985 		static char in[] = {
986 		    0x0f /* 0 */, 0x1d /* 1 */, 0x1e /* 2 */, 0x1f /* 3 */,
987 		    0x2d /* 4 */, 0x2e /* 5 */, 0x2f /* 6 */, 0x3d /* 7 */,
988 		    0x3e /* 8 */, 0x3f /* 9 */, 0x4a /* - */, 0x5e /* + */,
989 		    0x3c /* . */, 0x43 /* e */, 0x5a /* ( */, 0x5b /* ) */,
990 		    0x5c /* / */, 0x5d /* * */
991 		};
992 		static const char *out = "pqrstuvwxymlnMPQRS";
993 		char *cp = strchr(in, c);
994 
995 		/*
996 		 * keypad-appmode sends SS3 followed by the above
997 		 * translated character
998 		 */
999 		kbd_tty->t_linesw->l_rint(27, kbd_tty);
1000 		kbd_tty->t_linesw->l_rint('O', kbd_tty);
1001 		kbd_tty->t_linesw->l_rint(out[cp - in], kbd_tty);
1002 		splx(s);
1003 		return;
1004 	} else {
1005 		/* *NO* I don't like this.... */
1006 		static u_char app_cursor[] =
1007 		{
1008 		    3, 27, 'O', 'A',
1009 		    3, 27, 'O', 'B',
1010 		    3, 27, 'O', 'C',
1011 		    3, 27, 'O', 'D'};
1012 
1013 		str = kbdmap.strings + code;
1014 		/*
1015 		 * if this is a cursor key, AND it has the default
1016 		 * keymap setting, AND we're in app-cursor mode, switch
1017 		 * to the above table. This is *nasty* !
1018 		 */
1019 		if (c >= 0x4c && c <= 0x4f && kbd_ite->cursor_appmode
1020 		    && !memcmp(str, "\x03\x1b[", 3) &&
1021 		    strchr("ABCD", str[3]))
1022 			str = app_cursor + 4 * (str[3] - 'A');
1023 
1024 		/*
1025 		 * using a length-byte instead of 0-termination allows
1026 		 * to embed \0 into strings, although this is not used
1027 		 * in the default keymap
1028 		 */
1029 		for (i = *str++; i; i--)
1030 			kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
1031 		splx(s);
1032 		return;
1033 	}
1034 	kbd_tty->t_linesw->l_rint(code, kbd_tty);
1035 
1036 	splx(s);
1037 	return;
1038 }
1039 
1040 /* helper functions, makes the code below more readable */
1041 inline static void
1042 ite_sendstr(const char *str)
1043 {
1044 	struct tty *kbd_tty;
1045 
1046 	kbd_tty = kbd_ite->tp;
1047 	KDASSERT(kbd_tty);
1048 	while (*str)
1049 		kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
1050 }
1051 
1052 static void
1053 alignment_display(struct ite_softc *ip)
1054 {
1055   int i, j;
1056 
1057   for (j = 0; j < ip->rows; j++)
1058     for (i = 0; i < ip->cols; i++)
1059       SUBR_PUTC(ip, 'E', j, i, ATTR_NOR);
1060   attrclr(ip, 0, 0, ip->rows, ip->cols);
1061   SUBR_CURSOR(ip, DRAW_CURSOR);
1062 }
1063 
1064 inline static void
1065 snap_cury(struct ite_softc *ip)
1066 {
1067   if (ip->inside_margins)
1068     {
1069       if (ip->cury < ip->top_margin)
1070 	ip->cury = ip->top_margin;
1071       if (ip->cury > ip->bottom_margin)
1072 	ip->cury = ip->bottom_margin;
1073     }
1074 }
1075 
1076 inline static void
1077 ite_dnchar(struct ite_softc *ip, int n)
1078 {
1079   n = min(n, ip->cols - ip->curx);
1080   if (n < ip->cols - ip->curx)
1081     {
1082       SUBR_SCROLL(ip, ip->cury, ip->curx + n, n, SCROLL_LEFT);
1083       attrmov(ip, ip->cury, ip->curx + n, ip->cury, ip->curx,
1084 	      1, ip->cols - ip->curx - n);
1085       attrclr(ip, ip->cury, ip->cols - n, 1, n);
1086     }
1087   while (n-- > 0)
1088     SUBR_PUTC(ip, ' ', ip->cury, ip->cols - n - 1, ATTR_NOR);
1089   SUBR_CURSOR(ip, DRAW_CURSOR);
1090 }
1091 
1092 inline static void
1093 ite_inchar(struct ite_softc *ip, int n)
1094 {
1095   n = min(n, ip->cols - ip->curx);
1096   if (n < ip->cols - ip->curx)
1097     {
1098       SUBR_SCROLL(ip, ip->cury, ip->curx, n, SCROLL_RIGHT);
1099       attrmov(ip, ip->cury, ip->curx, ip->cury, ip->curx + n,
1100 	      1, ip->cols - ip->curx - n);
1101       attrclr(ip, ip->cury, ip->curx, 1, n);
1102     }
1103   while (n--)
1104     SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1105   SUBR_CURSOR(ip, DRAW_CURSOR);
1106 }
1107 
1108 inline static void
1109 ite_clrtoeol(struct ite_softc *ip)
1110 {
1111   int y = ip->cury, x = ip->curx;
1112   if (ip->cols - x > 0)
1113     {
1114       SUBR_CLEAR(ip, y, x, 1, ip->cols - x);
1115       attrclr(ip, y, x, 1, ip->cols - x);
1116       SUBR_CURSOR(ip, DRAW_CURSOR);
1117     }
1118 }
1119 
1120 inline static void
1121 ite_clrtobol(struct ite_softc *ip)
1122 {
1123   int y = ip->cury, x = min(ip->curx + 1, ip->cols);
1124   SUBR_CLEAR(ip, y, 0, 1, x);
1125   attrclr(ip, y, 0, 1, x);
1126   SUBR_CURSOR(ip, DRAW_CURSOR);
1127 }
1128 
1129 inline static void
1130 ite_clrline(struct ite_softc *ip)
1131 {
1132   int y = ip->cury;
1133   SUBR_CLEAR(ip, y, 0, 1, ip->cols);
1134   attrclr(ip, y, 0, 1, ip->cols);
1135   SUBR_CURSOR(ip, DRAW_CURSOR);
1136 }
1137 
1138 
1139 
1140 inline static void
1141 ite_clrtoeos(struct ite_softc *ip)
1142 {
1143   ite_clrtoeol(ip);
1144   if (ip->cury < ip->rows - 1)
1145     {
1146       SUBR_CLEAR(ip, ip->cury + 1, 0, ip->rows - 1 - ip->cury, ip->cols);
1147       attrclr(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols);
1148       SUBR_CURSOR(ip, DRAW_CURSOR);
1149     }
1150 }
1151 
1152 inline static void
1153 ite_clrtobos(struct ite_softc *ip)
1154 {
1155   ite_clrtobol(ip);
1156   if (ip->cury > 0)
1157     {
1158       SUBR_CLEAR(ip, 0, 0, ip->cury, ip->cols);
1159       attrclr(ip, 0, 0, ip->cury, ip->cols);
1160       SUBR_CURSOR(ip, DRAW_CURSOR);
1161     }
1162 }
1163 
1164 inline static void
1165 ite_clrscreen(struct ite_softc *ip)
1166 {
1167   SUBR_CLEAR(ip, 0, 0, ip->rows, ip->cols);
1168   attrclr(ip, 0, 0, ip->rows, ip->cols);
1169   SUBR_CURSOR(ip, DRAW_CURSOR);
1170 }
1171 
1172 
1173 
1174 inline static void
1175 ite_dnline(struct ite_softc *ip, int n)
1176 {
1177   /* interesting.. if the cursor is outside the scrolling
1178      region, this command is simply ignored.. */
1179   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1180     return;
1181 
1182   n = min(n, ip->bottom_margin + 1 - ip->cury);
1183   if (n <= ip->bottom_margin - ip->cury)
1184     {
1185       SUBR_SCROLL(ip, ip->cury + n, 0, n, SCROLL_UP);
1186       attrmov(ip, ip->cury + n, 0, ip->cury, 0,
1187 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1188     }
1189   SUBR_CLEAR(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1190   attrclr(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1191   SUBR_CURSOR(ip, DRAW_CURSOR);
1192 }
1193 
1194 inline static void
1195 ite_inline(struct ite_softc *ip, int n)
1196 {
1197   /* interesting.. if the cursor is outside the scrolling
1198      region, this command is simply ignored.. */
1199   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1200     return;
1201 
1202   n = min(n, ip->bottom_margin + 1 - ip->cury);
1203   if (n <= ip->bottom_margin - ip->cury)
1204     {
1205       SUBR_SCROLL(ip, ip->cury, 0, n, SCROLL_DOWN);
1206       attrmov(ip, ip->cury, 0, ip->cury + n, 0,
1207 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1208     }
1209   SUBR_CLEAR(ip, ip->cury, 0, n, ip->cols);
1210   attrclr(ip, ip->cury, 0, n, ip->cols);
1211   SUBR_CURSOR(ip, DRAW_CURSOR);
1212 }
1213 
1214 inline static void
1215 ite_lf(struct ite_softc *ip)
1216 {
1217   ++ip->cury;
1218   if ((ip->cury == ip->bottom_margin+1) || (ip->cury == ip->rows))
1219     {
1220       ip->cury--;
1221       SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1222       ite_clrline(ip);
1223     }
1224   SUBR_CURSOR(ip, MOVE_CURSOR);
1225   clr_attr(ip, ATTR_INV);
1226 }
1227 
1228 inline static void
1229 ite_crlf(struct ite_softc *ip)
1230 {
1231   ip->curx = 0;
1232   ite_lf (ip);
1233 }
1234 
1235 inline static void
1236 ite_cr(struct ite_softc *ip)
1237 {
1238   if (ip->curx)
1239     {
1240       ip->curx = 0;
1241       SUBR_CURSOR(ip, MOVE_CURSOR);
1242     }
1243 }
1244 
1245 inline static void
1246 ite_rlf(struct ite_softc *ip)
1247 {
1248   ip->cury--;
1249   if ((ip->cury < 0) || (ip->cury == ip->top_margin - 1))
1250     {
1251       ip->cury++;
1252       SUBR_SCROLL(ip, ip->top_margin, 0, 1, SCROLL_DOWN);
1253       ite_clrline(ip);
1254     }
1255   SUBR_CURSOR(ip, MOVE_CURSOR);
1256   clr_attr(ip, ATTR_INV);
1257 }
1258 
1259 inline static int
1260 atoi(const char *cp)
1261 {
1262   int n;
1263 
1264   for (n = 0; *cp && *cp >= '0' && *cp <= '9'; cp++)
1265     n = n * 10 + *cp - '0';
1266 
1267   return n;
1268 }
1269 
1270 inline static int
1271 ite_argnum(struct ite_softc *ip)
1272 {
1273   char ch;
1274   int n;
1275 
1276   /* convert argument string into number */
1277   if (ip->ap == ip->argbuf)
1278     return 1;
1279   ch = *ip->ap;
1280   *ip->ap = 0;
1281   n = atoi (ip->argbuf);
1282   *ip->ap = ch;
1283 
1284   return n;
1285 }
1286 
1287 inline static int
1288 ite_zargnum(struct ite_softc *ip)
1289 {
1290   char ch;
1291   int n;
1292 
1293   /* convert argument string into number */
1294   if (ip->ap == ip->argbuf)
1295     return 0;
1296   ch = *ip->ap;
1297   *ip->ap = 0;
1298   n = atoi (ip->argbuf);
1299   *ip->ap = ch;
1300 
1301   return n;	/* don't "n ? n : 1" here, <CSI>0m != <CSI>1m ! */
1302 }
1303 
1304 void
1305 ite_putstr(const char *s, int len, dev_t dev)
1306 {
1307 	struct ite_softc *ip;
1308 	int i;
1309 
1310 	ip = getitesp(dev);
1311 
1312 	/* XXX avoid problems */
1313 	if ((ip->flags & (ITE_ACTIVE|ITE_INGRF)) != ITE_ACTIVE)
1314 	  	return;
1315 
1316 	SUBR_CURSOR(ip, START_CURSOROPT);
1317 	for (i = 0; i < len; i++)
1318 		if (s[i])
1319 			iteputchar(s[i], ip);
1320 	SUBR_CURSOR(ip, END_CURSOROPT);
1321 }
1322 
1323 static void
1324 iteprecheckwrap(struct ite_softc *ip)
1325 {
1326 	if (ip->auto_wrap && ip->curx == ip->cols) {
1327 		ip->curx = 0;
1328 		clr_attr(ip, ATTR_INV);
1329 		if (++ip->cury >= ip->bottom_margin + 1) {
1330 			ip->cury = ip->bottom_margin;
1331 			SUBR_CURSOR(ip, MOVE_CURSOR);
1332 			SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1333 			ite_clrtoeol(ip);
1334 		} else
1335 			SUBR_CURSOR(ip, MOVE_CURSOR);
1336 	}
1337 }
1338 
1339 static void
1340 itecheckwrap(struct ite_softc *ip)
1341 {
1342 #if 0
1343 	if (++ip->curx == ip->cols) {
1344 		if (ip->auto_wrap) {
1345 			ip->curx = 0;
1346 			clr_attr(ip, ATTR_INV);
1347 			if (++ip->cury >= ip->bottom_margin + 1) {
1348 				ip->cury = ip->bottom_margin;
1349 				SUBR_CURSOR(ip, MOVE_CURSOR);
1350 				SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1351 				ite_clrtoeol(ip);
1352 				return;
1353 			}
1354 		} else
1355 			/* stay there if no autowrap.. */
1356 			ip->curx--;
1357 	}
1358 #else
1359 	if (ip->curx < ip->cols) {
1360 		ip->curx++;
1361 		SUBR_CURSOR(ip, MOVE_CURSOR);
1362 	}
1363 #endif
1364 }
1365 
1366 void
1367 iteputchar(register int c, struct ite_softc *ip)
1368 {
1369 	struct tty *kbd_tty;
1370 	int n, x, y;
1371 	char *cp;
1372 
1373 	if (kbd_ite == NULL)
1374 		kbd_tty = NULL;
1375 	else
1376 		kbd_tty = kbd_ite->tp;
1377 
1378 	if (ip->escape) {
1379 		switch (ip->escape) {
1380 		case ESC:
1381 			switch (c) {
1382 				/*
1383 				 * first 7bit equivalents for the
1384 				 * 8bit control characters
1385 				 */
1386 			case 'D':
1387 				c = IND;
1388 				ip->escape = 0;
1389 				break;
1390 				/*
1391 				 * and fall into the next
1392 				 * switch below (same for all `break')
1393 				 */
1394 			case 'E':
1395 				c = NEL;
1396 				ip->escape = 0;
1397 				break;
1398 			case 'H':
1399 				c = HTS;
1400 				ip->escape = 0;
1401 				break;
1402 			case 'M':
1403 				c = RI;
1404 				ip->escape = 0;
1405 				break;
1406 			case 'N':
1407 				c = SS2;
1408 				ip->escape = 0;
1409 				break;
1410 			case 'O':
1411 				c = SS3;
1412 				ip->escape = 0;
1413 				break;
1414 			case 'P':
1415 				c = DCS;
1416 				ip->escape = 0;
1417 				break;
1418 			case '[':
1419 				c = CSI;
1420 				ip->escape = 0;
1421 				break;
1422 			case '\\':
1423 				c = ST;
1424 				ip->escape = 0;
1425 				break;
1426 			case ']':
1427 				c = OSC;
1428 				ip->escape = 0;
1429 				break;
1430 			case '^':
1431 				c = PM;
1432 				ip->escape = 0;
1433 				break;
1434 			case '_':
1435 				c = APC;
1436 				ip->escape = 0;
1437 				break;
1438 				/* introduces 7/8bit control */
1439 			case ' ':
1440 				/* can be followed by either F or G */
1441 				ip->escape = ' ';
1442 				break;
1443 			/*
1444 			 * a lot of character set selections, not yet
1445 			 * used... 94-character sets:
1446 			 */
1447 			case '(':	/* G0 */
1448 			case ')':	/* G1 */
1449 				ip->escape = c;
1450 				return;
1451 			case '*':	/* G2 */
1452 			case '+':	/* G3 */
1453 			case 'B':	/* ASCII */
1454 			case 'A':	/* ISO latin 1 */
1455 			case '<':	/* user preferred suplemental */
1456 			case '0':	/* dec special graphics */
1457 			/*
1458 			 * 96-character sets:
1459 			 */
1460 			case '-':	/* G1 */
1461 			case '.':	/* G2 */
1462 			case '/':	/* G3 */
1463 			/*
1464 			 * national character sets:
1465 			 */
1466 			case '4':	/* dutch */
1467 			case '5':
1468 			case 'C':	/* finnish */
1469 			case 'R':	/* french */
1470 			case 'Q':	/* french canadian */
1471 			case 'K':	/* german */
1472 			case 'Y':	/* italian */
1473 			case '6':	/* norwegian/danish */
1474 				/*
1475 				 * note: %5 and %6 are not supported (two
1476 				 * chars..)
1477 				 */
1478 				ip->escape = 0;
1479 				/* just ignore for now */
1480 				return;
1481 			/*
1482 			 * locking shift modes (as you might guess, not
1483 			 * yet supported..)
1484 			 */
1485 			case '`':
1486 				ip->GR = ip->G1;
1487 				ip->escape = 0;
1488 				return;
1489 			case 'n':
1490 				ip->GL = ip->G2;
1491 				ip->escape = 0;
1492 				return;
1493 			case '}':
1494 				ip->GR = ip->G2;
1495 				ip->escape = 0;
1496 				return;
1497 			case 'o':
1498 				ip->GL = ip->G3;
1499 				ip->escape = 0;
1500 				return;
1501 			case '|':
1502 				ip->GR = ip->G3;
1503 				ip->escape = 0;
1504 				return;
1505 			case '#':
1506 				/* font width/height control */
1507 				ip->escape = '#';
1508 				return;
1509 			case 'c':
1510 				/* hard terminal reset .. */
1511 				ite_reset(ip);
1512 				SUBR_CURSOR(ip, MOVE_CURSOR);
1513 				ip->escape = 0;
1514 				return;
1515 			case '7':
1516 				ip->save_curx = ip->curx;
1517 				ip->save_cury = ip->cury;
1518 				ip->save_attribute = ip->attribute;
1519 				ip->escape = 0;
1520 				return;
1521 			case '8':
1522 				ip->curx = ip->save_curx;
1523 				ip->cury = ip->save_cury;
1524 				ip->attribute = ip->save_attribute;
1525 				SUBR_CURSOR(ip, MOVE_CURSOR);
1526 				ip->escape = 0;
1527 				return;
1528 			case '=':
1529 				ip->keypad_appmode = 1;
1530 				ip->escape = 0;
1531 				return;
1532 			case '>':
1533 				ip->keypad_appmode = 0;
1534 				ip->escape = 0;
1535 				return;
1536 			case 'Z':	/* request ID */
1537 				/* XXX not clean */
1538 				if (ip->emul_level == EMUL_VT100)
1539 					ite_sendstr("\033[?61;0c");
1540 				else
1541 					ite_sendstr("\033[?63;0c");
1542 				ip->escape = 0;
1543 				return;
1544 			default:
1545 				/*
1546 				 * default catch all for not recognized ESC
1547 				 * sequences
1548 				 */
1549 				ip->escape = 0;
1550 				return;
1551 			}
1552 			break;
1553 		case '(':
1554 		case ')':
1555 			ip->escape = 0;
1556 			return;
1557 		case ' ':
1558 			switch (c) {
1559 			case 'F':
1560 				ip->eightbit_C1 = 0;
1561 				ip->escape = 0;
1562 				return;
1563 			case 'G':
1564 				ip->eightbit_C1 = 1;
1565 				ip->escape = 0;
1566 				return;
1567 			default:
1568 				/* not supported */
1569 				ip->escape = 0;
1570 				return;
1571 			}
1572 			break;
1573 		case '#':
1574 			switch (c) {
1575 			case '5':
1576 				/* single height, single width */
1577 				ip->escape = 0;
1578 				return;
1579 			case '6':
1580 				/* double width, single height */
1581 				ip->escape = 0;
1582 				return;
1583 			case '3':
1584 				/* top half */
1585 				ip->escape = 0;
1586 				return;
1587 			case '4':
1588 				/* bottom half */
1589 				ip->escape = 0;
1590 				return;
1591 			case '8':
1592 				/* screen alignment pattern... */
1593 				alignment_display(ip);
1594 				ip->escape = 0;
1595 				return;
1596 			default:
1597 				ip->escape = 0;
1598 				return;
1599 			}
1600 			break;
1601 		case CSI:
1602 			/* the biggie... */
1603 			switch (c) {
1604 			case '0':
1605 			case '1':
1606 			case '2':
1607 			case '3':
1608 			case '4':
1609 			case '5':
1610 			case '6':
1611 			case '7':
1612 			case '8':
1613 			case '9':
1614 			case ';':
1615 			case '\"':
1616 			case '$':
1617 			case '>':
1618 				if (ip->ap < ip->argbuf + MAX_ARGSIZE)
1619 					*ip->ap++ = c;
1620 				return;
1621 			case BS:
1622 				/*
1623 				 * you wouldn't believe such perversion is
1624 				 * possible? it is.. BS is allowed in between
1625 				 * cursor sequences (at least), according to
1626 				 * vttest..
1627 				 */
1628 				if (--ip->curx < 0)
1629 					ip->curx = 0;
1630 				else
1631 					SUBR_CURSOR(ip, MOVE_CURSOR);
1632 				break;
1633 			case 'p':
1634 				*ip->ap = 0;
1635 				if (!strncmp(ip->argbuf, "61\"", 3))
1636 					ip->emul_level = EMUL_VT100;
1637 				else if (!strncmp(ip->argbuf, "63;1\"", 5)
1638 				    || !strncmp(ip->argbuf, "62;1\"", 5))
1639 					ip->emul_level = EMUL_VT300_7;
1640 				else
1641 					ip->emul_level = EMUL_VT300_8;
1642 				ip->escape = 0;
1643 				return;
1644 			case '?':
1645 				*ip->ap = 0;
1646 				ip->escape = '?';
1647 				ip->ap = ip->argbuf;
1648 				return;
1649 			case 'c':
1650 				*ip->ap = 0;
1651 				if (ip->argbuf[0] == '>') {
1652 					ite_sendstr("\033[>24;0;0;0c");
1653 				} else
1654 					switch (ite_zargnum(ip)) {
1655 					case 0:
1656 						/*
1657 						 * primary DA request, send
1658 						 * primary DA response
1659 						 */
1660 						if (ip->emul_level
1661 						    == EMUL_VT100)
1662 							ite_sendstr(
1663 							    "\033[?1;1c");
1664 						else
1665 							ite_sendstr(
1666 							    "\033[?63;1c");
1667 						break;
1668 					}
1669 				ip->escape = 0;
1670 				return;
1671 			case 'n':
1672 				switch (ite_zargnum(ip)) {
1673 				case 5:
1674 					/* no malfunction */
1675 					ite_sendstr("\033[0n");
1676 					break;
1677 				case 6:
1678 					/* cursor position report */
1679 					sprintf(ip->argbuf, "\033[%d;%dR",
1680 					    ip->cury + 1, ip->curx + 1);
1681 					ite_sendstr(ip->argbuf);
1682 					break;
1683 				}
1684 				ip->escape = 0;
1685 				return;
1686 			case 'x':
1687 				switch (ite_zargnum(ip)) {
1688 				case 0:
1689 					/* Fake some terminal parameters.  */
1690 					ite_sendstr("\033[2;1;1;112;112;1;0x");
1691 					break;
1692 				case 1:
1693 					ite_sendstr("\033[3;1;1;112;112;1;0x");
1694 					break;
1695 				}
1696 				ip->escape = 0;
1697 				return;
1698 			case 'g':
1699 				switch (ite_zargnum(ip)) {
1700 				case 0:
1701 					if (ip->curx < ip->cols)
1702 						ip->tabs[ip->curx] = 0;
1703 					break;
1704 				case 3:
1705 					for (n = 0; n < ip->cols; n++)
1706 						ip->tabs[n] = 0;
1707 					break;
1708 				}
1709 				ip->escape = 0;
1710 				return;
1711 			case 'h':
1712 			case 'l':
1713 				n = ite_zargnum(ip);
1714 				switch (n) {
1715 				case 4:
1716 					/* insert/replace mode */
1717 					ip->imode = (c == 'h');
1718 					break;
1719 				case 20:
1720 					ip->linefeed_newline = (c == 'h');
1721 					break;
1722 				}
1723 				ip->escape = 0;
1724 				return;
1725 			case 'M':
1726 				ite_dnline(ip, ite_argnum(ip));
1727 				ip->escape = 0;
1728 				return;
1729 			case 'L':
1730 				ite_inline(ip, ite_argnum(ip));
1731 				ip->escape = 0;
1732 				return;
1733 			case 'P':
1734 				ite_dnchar(ip, ite_argnum(ip));
1735 				ip->escape = 0;
1736 				return;
1737 			case '@':
1738 				ite_inchar(ip, ite_argnum(ip));
1739 				ip->escape = 0;
1740 				return;
1741 			case 'G':
1742 				/*
1743 				 * this one was *not* in my vt320 manual but in
1744 				 * a vt320 termcap entry.. who is right? It's
1745 				 * supposed to set the horizontal cursor
1746 				 * position.
1747 				 */
1748 				*ip->ap = 0;
1749 				x = atoi(ip->argbuf);
1750 				if (x)
1751 					x--;
1752 				ip->curx = min(x, ip->cols - 1);
1753 				ip->escape = 0;
1754 				SUBR_CURSOR(ip, MOVE_CURSOR);
1755 				clr_attr(ip, ATTR_INV);
1756 				return;
1757 			case 'd':
1758 				/*
1759 				 * same thing here, this one's for setting the
1760 				 * absolute vertical cursor position. Not
1761 				 * documented...
1762 				 */
1763 				*ip->ap = 0;
1764 				y = atoi(ip->argbuf);
1765 				if (y)
1766 					y--;
1767 				if (ip->inside_margins)
1768 					y += ip->top_margin;
1769 				ip->cury = min(y, ip->rows - 1);
1770 				ip->escape = 0;
1771 				snap_cury(ip);
1772 				SUBR_CURSOR(ip, MOVE_CURSOR);
1773 				clr_attr(ip, ATTR_INV);
1774 				return;
1775 			case 'H':
1776 			case 'f':
1777 				*ip->ap = 0;
1778 				y = atoi(ip->argbuf);
1779 				x = 0;
1780 				cp = strchr(ip->argbuf, ';');
1781 				if (cp)
1782 					x = atoi(cp + 1);
1783 				if (x)
1784 					x--;
1785 				if (y)
1786 					y--;
1787 				if (ip->inside_margins)
1788 					y += ip->top_margin;
1789 				ip->cury = min(y, ip->rows - 1);
1790 				ip->curx = min(x, ip->cols - 1);
1791 				ip->escape = 0;
1792 				snap_cury(ip);
1793 				SUBR_CURSOR(ip, MOVE_CURSOR);
1794 				clr_attr(ip, ATTR_INV);
1795 				return;
1796 			case 'A':
1797 				n = ite_argnum(ip);
1798 				n = ip->cury - (n ? n : 1);
1799 				if (n < 0)
1800 					n = 0;
1801 				if (ip->inside_margins)
1802 					n = max(ip->top_margin, n);
1803 				else if (n == ip->top_margin - 1)
1804 					/*
1805 					 * allow scrolling outside region, but
1806 					 * don't scroll out of active region
1807 					 * without explicit CUP
1808 					 */
1809 					n = ip->top_margin;
1810 				ip->cury = n;
1811 				ip->escape = 0;
1812 				SUBR_CURSOR(ip, MOVE_CURSOR);
1813 				clr_attr(ip, ATTR_INV);
1814 				return;
1815 			case 'B':
1816 				n = ite_argnum(ip);
1817 				n = ip->cury + (n ? n : 1);
1818 				n = min(ip->rows - 1, n);
1819 				if (ip->inside_margins)
1820 					n = min(ip->bottom_margin, n);
1821 				else if (n == ip->bottom_margin + 1)
1822 					/*
1823 					 * allow scrolling outside region, but
1824 					 * don't scroll out of active region
1825 					 * without explicit CUP
1826 					 */
1827 					n = ip->bottom_margin;
1828 				ip->cury = n;
1829 				ip->escape = 0;
1830 				SUBR_CURSOR(ip, MOVE_CURSOR);
1831 				clr_attr(ip, ATTR_INV);
1832 				return;
1833 			case 'C':
1834 				n = ite_argnum(ip);
1835 				n = n ? n : 1;
1836 				ip->curx = min(ip->curx + n, ip->cols - 1);
1837 				ip->escape = 0;
1838 				SUBR_CURSOR(ip, MOVE_CURSOR);
1839 				clr_attr(ip, ATTR_INV);
1840 				return;
1841 			case 'D':
1842 				n = ite_argnum(ip);
1843 				n = n ? n : 1;
1844 				n = ip->curx - n;
1845 				ip->curx = n >= 0 ? n : 0;
1846 				ip->escape = 0;
1847 				SUBR_CURSOR(ip, MOVE_CURSOR);
1848 				clr_attr(ip, ATTR_INV);
1849 				return;
1850 			case 'J':
1851 				*ip->ap = 0;
1852 				n = ite_zargnum(ip);
1853 				if (n == 0)
1854 					ite_clrtoeos(ip);
1855 				else if (n == 1)
1856 					ite_clrtobos(ip);
1857 				else if (n == 2)
1858 					ite_clrscreen(ip);
1859 				ip->escape = 0;
1860 				return;
1861 			case 'K':
1862 				n = ite_zargnum(ip);
1863 				if (n == 0)
1864 					ite_clrtoeol(ip);
1865 				else if (n == 1)
1866 					ite_clrtobol(ip);
1867 				else if (n == 2)
1868 					ite_clrline(ip);
1869 				ip->escape = 0;
1870 				return;
1871 			case 'X':
1872 				n = ite_argnum(ip) - 1;
1873 				n = min(n, ip->cols - 1 - ip->curx);
1874 				for (; n >= 0; n--) {
1875 					attrclr(ip, ip->cury, ip->curx + n, 1, 1);
1876 					SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1877 				}
1878 				ip->escape = 0;
1879 				return;
1880 			case '}':
1881 			case '`':
1882 				/* status line control */
1883 				ip->escape = 0;
1884 				return;
1885 			case 'r':
1886 				*ip->ap = 0;
1887 				x = atoi(ip->argbuf);
1888 				x = x ? x : 1;
1889 				y = ip->rows;
1890 				cp = strchr(ip->argbuf, ';');
1891 				if (cp) {
1892 					y = atoi(cp + 1);
1893 					y = y ? y : ip->rows;
1894 				}
1895 				if (y - x < 2) {
1896 					/*
1897 					 * if illegal scrolling region, reset
1898 					 * to defaults
1899 					 */
1900 					x = 1;
1901 					y = ip->rows;
1902 				}
1903 				x--;
1904 				y--;
1905 				ip->top_margin = min(x, ip->rows - 1);
1906 				ip->bottom_margin = min(y, ip->rows - 1);
1907 				if (ip->inside_margins) {
1908 					ip->cury = ip->top_margin;
1909 					ip->curx = 0;
1910 					SUBR_CURSOR(ip, MOVE_CURSOR);
1911 				}
1912 				ip->escape = 0;
1913 				return;
1914 			case 'm':
1915 				/* big attribute setter/resetter */
1916 				{ char *_cp;
1917 				*ip->ap = 0;
1918 				/* kludge to make CSIm work (== CSI0m) */
1919 				if (ip->ap == ip->argbuf)
1920 					ip->ap++;
1921 				for (_cp = ip->argbuf; _cp < ip->ap;) {
1922 					switch (*_cp) {
1923 					case 0:
1924 					case '0':
1925 						clr_attr(ip, ATTR_ALL);
1926 						_cp++;
1927 						break;
1928 
1929 					case '1':
1930 						set_attr(ip, ATTR_BOLD);
1931 						_cp++;
1932 						break;
1933 
1934 					case '2':
1935 						switch (_cp[1]) {
1936 						case '2':
1937 							clr_attr(ip, ATTR_BOLD);
1938 							_cp += 2;
1939 							break;
1940 
1941 						case '4':
1942 							clr_attr(ip, ATTR_UL);
1943 							_cp += 2;
1944 							break;
1945 
1946 						case '5':
1947 							clr_attr(ip, ATTR_BLINK);
1948 							_cp += 2;
1949 							break;
1950 
1951 						case '7':
1952 							clr_attr(ip, ATTR_INV);
1953 							_cp += 2;
1954 							break;
1955 
1956 						default:
1957 							_cp++;
1958 							break;
1959 						}
1960 						break;
1961 
1962 					case '4':
1963 						set_attr(ip, ATTR_UL);
1964 						_cp++;
1965 						break;
1966 
1967 					case '5':
1968 						set_attr(ip, ATTR_BLINK);
1969 						_cp++;
1970 						break;
1971 
1972 					case '7':
1973 						set_attr(ip, ATTR_INV);
1974 						_cp++;
1975 						break;
1976 
1977 					default:
1978 						_cp++;
1979 						break;
1980 					}
1981 				}
1982 				ip->escape = 0;
1983 				return; }
1984 			case 'u':
1985 				/* DECRQTSR */
1986 				ite_sendstr("\033P\033\\");
1987 				ip->escape = 0;
1988 				return;
1989 			default:
1990 				ip->escape = 0;
1991 				return;
1992 			}
1993 			break;
1994 		case '?':	/* CSI ? */
1995 			switch (c) {
1996 			case '0':
1997 			case '1':
1998 			case '2':
1999 			case '3':
2000 			case '4':
2001 			case '5':
2002 			case '6':
2003 			case '7':
2004 			case '8':
2005 			case '9':
2006 			case ';':
2007 			case '\"':
2008 			case '$':
2009 				/*
2010 				 * Don't fill the last character;
2011 				 * it's needed.
2012 				 * XXX yeah, where ??
2013 				 */
2014 				if (ip->ap < ip->argbuf + MAX_ARGSIZE - 1)
2015 					*ip->ap++ = c;
2016 				return;
2017 			case 'n':
2018 				*ip->ap = 0;
2019 				if (ip->ap == &ip->argbuf[2]) {
2020 					if (!strncmp(ip->argbuf, "15", 2))
2021 						/* printer status: no printer */
2022 						ite_sendstr("\033[13n");
2023 
2024 					else if (!strncmp(ip->argbuf, "25", 2))
2025 						/* udk status */
2026 						ite_sendstr("\033[20n");
2027 
2028 					else if (!strncmp(ip->argbuf, "26", 2))
2029 						/* keyboard dialect: US */
2030 						ite_sendstr("\033[27;1n");
2031 				}
2032 				ip->escape = 0;
2033 				return;
2034 			case 'h':
2035 			case 'l':
2036 				n = ite_zargnum(ip);
2037 				switch (n) {
2038 				case 1:
2039 					ip->cursor_appmode = (c == 'h');
2040 					break;
2041 				case 3:
2042 					/* 132/80 columns (132 == 'h') */
2043 					break;
2044 				case 4:	/* smooth scroll */
2045 					break;
2046 				case 5:
2047 					/*
2048 					 * light background (=='h') /dark
2049 					 * background(=='l')
2050 					 */
2051 					break;
2052 				case 6:	/* origin mode */
2053 					ip->inside_margins = (c == 'h');
2054 					ip->curx = 0;
2055 					ip->cury = ip->inside_margins ?
2056 					    ip->top_margin : 0;
2057 					SUBR_CURSOR(ip, MOVE_CURSOR);
2058 					break;
2059 				case 7:	/* auto wraparound */
2060 					ip->auto_wrap = (c == 'h');
2061 					break;
2062 				case 8:	/* keyboard repeat */
2063 					ip->key_repeat = (c == 'h');
2064 					break;
2065 				case 20:	/* newline mode */
2066 					ip->linefeed_newline = (c == 'h');
2067 					break;
2068 				case 25:	/* cursor on/off */
2069 					SUBR_CURSOR(ip, (c == 'h') ?
2070 					    DRAW_CURSOR : ERASE_CURSOR);
2071 					break;
2072 				}
2073 				ip->escape = 0;
2074 				return;
2075 			default:
2076 				ip->escape = 0;
2077 				return;
2078 			}
2079 			break;
2080 		default:
2081 			ip->escape = 0;
2082 			return;
2083 		}
2084 	}
2085 	switch (c) {
2086 	case VT:		/* VT is treated like LF */
2087 	case FF:		/* so is FF */
2088 	case LF:
2089 		/*
2090 		 * cr->crlf distinction is done here, on output, not on input!
2091 		 */
2092 		if (ip->linefeed_newline)
2093 			ite_crlf(ip);
2094 		else
2095 			ite_lf(ip);
2096 		break;
2097 	case CR:
2098 		ite_cr(ip);
2099 		break;
2100 	case BS:
2101 		if (--ip->curx < 0)
2102 			ip->curx = 0;
2103 		else
2104 			SUBR_CURSOR(ip, MOVE_CURSOR);
2105 		break;
2106 	case HT:
2107 		for (n = ip->curx + 1; n < ip->cols; n++) {
2108 			if (ip->tabs[n]) {
2109 				ip->curx = n;
2110 				SUBR_CURSOR(ip, MOVE_CURSOR);
2111 				break;
2112 			}
2113 		}
2114 		break;
2115 	case BEL:
2116 		if (kbd_tty && kbd_ite && kbd_ite->tp == kbd_tty
2117 #ifdef DRACO
2118 		    && !is_draco()
2119 #endif
2120 		    )
2121 			ite_bell();
2122 		break;
2123 	case SO:
2124 		ip->GL = ip->G1;
2125 		break;
2126 	case SI:
2127 		ip->GL = ip->G0;
2128 		break;
2129 	case ENQ:
2130 		/* send answer-back message !! */
2131 		break;
2132 	case CAN:
2133 		ip->escape = 0;	/* cancel any escape sequence in progress */
2134 		break;
2135 	case SUB:
2136 		ip->escape = 0;	/* dito, but see below */
2137 		/* should also display a reverse question mark!! */
2138 		break;
2139 	case ESC:
2140 		ip->escape = ESC;
2141 		break;
2142 	/*
2143 	 * now it gets weird.. 8bit control sequences..
2144 	 */
2145 	case IND:
2146 		/* index: move cursor down, scroll */
2147 		ite_lf(ip);
2148 		break;
2149 	case NEL:
2150 		/* next line. next line, first pos. */
2151 		ite_crlf(ip);
2152 		break;
2153 	case HTS:
2154 		/* set horizontal tab */
2155 		if (ip->curx < ip->cols)
2156 			ip->tabs[ip->curx] = 1;
2157 		break;
2158 	case RI:
2159 		/* reverse index */
2160 		ite_rlf(ip);
2161 		break;
2162 	case SS2:
2163 		/* go into G2 for one character */
2164 		/* not yet supported */
2165 		break;
2166 	case SS3:
2167 		/* go into G3 for one character */
2168 		break;
2169 	case DCS:
2170 		/* device control string introducer */
2171 		ip->escape = DCS;
2172 		ip->ap = ip->argbuf;
2173 		break;
2174 	case CSI:
2175 		/* control sequence introducer */
2176 		ip->escape = CSI;
2177 		ip->ap = ip->argbuf;
2178 		break;
2179 	case ST:
2180 		/* string terminator */
2181 		/* ignore, if not used as terminator */
2182 		break;
2183 	case OSC:
2184 		/*
2185 		 * introduces OS command. Ignore everything
2186 		 * upto ST
2187 		 */
2188 		ip->escape = OSC;
2189 		break;
2190 	case PM:
2191 		/* privacy message, ignore everything upto ST */
2192 		ip->escape = PM;
2193 		break;
2194 	case APC:
2195 		/*
2196 		 * application program command, ignore * everything upto ST
2197 		 */
2198 		ip->escape = APC;
2199 		break;
2200 	default:
2201 		if ((c & 0x7f) < ' ' || c == DEL)
2202 			break;
2203 		if (ip->imode)
2204 			ite_inchar(ip, 1);
2205 		iteprecheckwrap(ip);
2206 #ifdef DO_WEIRD_ATTRIBUTES
2207 		if ((ip->attribute & ATTR_INV) || attrtest(ip, ATTR_INV)) {
2208 			attrset(ip, ATTR_INV);
2209 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_INV);
2210 		} else
2211 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_NOR);
2212 #else
2213 		SUBR_PUTC(ip, c, ip->cury, ip->curx, ip->attribute);
2214 #endif
2215 		SUBR_CURSOR(ip, DRAW_CURSOR);
2216 		itecheckwrap(ip);
2217 		break;
2218 	}
2219 }
2220 
2221