xref: /netbsd-src/sys/arch/amiga/dev/ite.c (revision ba65fde2d7fefa7d39838fa5fa855e62bd606b5e)
1 /*	$NetBSD: ite.c,v 1.94 2012/10/27 17:17:29 chs Exp $ */
2 
3 /*
4  * Copyright (c) 1988 University of Utah.
5  * Copyright (c) 1990 The Regents of the University of California.
6  * All rights reserved.
7  *
8  * This code is derived from software contributed to Berkeley by
9  * the Systems Programming Group of the University of Utah Computer
10  * Science Department.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  *	from: Utah Hdr: ite.c 1.1 90/07/09
37  *	@(#)ite.c 7.6 (Berkeley) 5/16/91
38  */
39 
40 /*
41  * ite - bitmaped terminal.
42  * Supports VT200, a few terminal features will be unavailable until
43  * the system actually probes the device (i.e. not after consinit())
44  */
45 
46 #include "opt_ddb.h"
47 
48 #include <sys/cdefs.h>
49 __KERNEL_RCSID(0, "$NetBSD: ite.c,v 1.94 2012/10/27 17:17:29 chs Exp $");
50 
51 #include <sys/param.h>
52 #include <sys/kernel.h>
53 #include <sys/device.h>
54 #include <sys/fcntl.h>
55 #include <sys/malloc.h>
56 #include <sys/ioctl.h>
57 #include <sys/tty.h>
58 #include <sys/termios.h>
59 #include <sys/systm.h>
60 #include <sys/callout.h>
61 #include <sys/proc.h>
62 #include <dev/cons.h>
63 #include <sys/kauth.h>
64 #include <amiga/amiga/cc.h>
65 #include <amiga/amiga/color.h>	/* DEBUG */
66 #include <amiga/amiga/custom.h>	/* DEBUG */
67 #include <amiga/amiga/device.h>
68 #include <amiga/amiga/isr.h>
69 #include <amiga/dev/iteioctl.h>
70 #include <amiga/dev/itevar.h>
71 #include <amiga/dev/kbdmap.h>
72 #include <amiga/dev/grfioctl.h>
73 #include <amiga/dev/grfvar.h>
74 
75 #include <machine/cpu.h>	/* for is_draco() */
76 
77 #include <sys/conf.h>
78 
79 #include "grfcc.h"
80 #include "ite.h"
81 
82 /*
83  * XXX go ask sys/kern/tty.c:ttselect()
84  */
85 
86 #define ITEUNIT(dev)	(minor(dev))
87 
88 #define SUBR_INIT(ip)		(ip)->grf->g_iteinit(ip)
89 #define SUBR_DEINIT(ip)		(ip)->grf->g_itedeinit(ip)
90 #define SUBR_PUTC(ip,c,dy,dx,m)	(ip)->grf->g_iteputc(ip,c,dy,dx,m)
91 #define SUBR_CURSOR(ip,flg)	(ip)->grf->g_itecursor(ip,flg)
92 #define SUBR_CLEAR(ip,sy,sx,h,w)	(ip)->grf->g_iteclear(ip,sy,sx,h,w)
93 #define SUBR_SCROLL(ip,sy,sx,count,dir)	\
94     (ip)->grf->g_itescroll(ip,sy,sx,count,dir)
95 
96 int	start_repeat_timeo = 30;	/* first repeat after x s/100 */
97 int	next_repeat_timeo = 10;		/* next repeat after x s/100 */
98 
99 int	ite_default_wrap = 1;		/* you want vtxxx-nam, binpatch */
100 
101 struct	ite_softc con_itesoftc;
102 u_char	cons_tabs[MAX_TABS];
103 
104 struct ite_softc *kbd_ite;
105 
106 /* audio bell stuff */
107 u_int bvolume = 10;
108 u_int bpitch = 660;
109 u_int bmsec = 75;
110 
111 static char *bsamplep;
112 static char sample[20] = {
113 	0,39,75,103,121,127,121,103,75,39,0,
114 	-39,-75,-103,-121,-127,-121,-103,-75,-39
115 };
116 
117 static callout_t repeat_ch;
118 
119 void iteputchar(int c, struct ite_softc *ip);
120 void ite_putstr(const char * s, int len, dev_t dev);
121 void iteattach(device_t, device_t, void *);
122 int itematch(device_t, cfdata_t, void *);
123 static void iteprecheckwrap(struct ite_softc *);
124 static void itecheckwrap(struct ite_softc *);
125 struct ite_softc *getitesp(dev_t);
126 void init_bell(void);
127 void ite_bell(void);
128 void itecnpollc(dev_t, int);
129 static void repeat_handler(void *);
130 inline static void ite_sendstr(const char *);
131 static void alignment_display(struct ite_softc *);
132 inline static void snap_cury(struct ite_softc *);
133 inline static void ite_dnchar(struct ite_softc *, int);
134 inline static void ite_inchar(struct ite_softc *, int);
135 inline static void ite_clrtoeol(struct ite_softc *);
136 inline static void ite_clrtobol(struct ite_softc *);
137 inline static void ite_clrline(struct ite_softc *);
138 inline static void ite_clrtoeos(struct ite_softc *);
139 inline static void ite_clrtobos(struct ite_softc *);
140 inline static void ite_clrscreen(struct ite_softc *);
141 inline static void ite_dnline(struct ite_softc *, int);
142 inline static void ite_inline(struct ite_softc *, int);
143 inline static void ite_lf(struct ite_softc *);
144 inline static void ite_crlf(struct ite_softc *);
145 inline static void ite_cr(struct ite_softc *);
146 inline static void ite_rlf(struct ite_softc *);
147 inline static int atoi(const char *);
148 inline static int ite_argnum(struct ite_softc *);
149 inline static int ite_zargnum(struct ite_softc *);
150 
151 CFATTACH_DECL_NEW(ite, sizeof(struct ite_softc),
152     itematch, iteattach, NULL, NULL);
153 
154 extern struct cfdriver ite_cd;
155 
156 dev_type_open(iteopen);
157 dev_type_close(iteclose);
158 dev_type_read(iteread);
159 dev_type_write(itewrite);
160 dev_type_ioctl(iteioctl);
161 dev_type_tty(itetty);
162 dev_type_poll(itepoll);
163 
164 const struct cdevsw ite_cdevsw = {
165 	iteopen, iteclose, iteread, itewrite, iteioctl,
166 	nostop, itetty, itepoll, nommap, ttykqfilter, D_TTY
167 };
168 
169 int
170 itematch(device_t parent, cfdata_t cf, void *aux)
171 {
172 	struct grf_softc *gp;
173 	int maj;
174 
175 	gp = aux;
176 
177 	/*
178 	 * XXX
179 	 * normally this would be done in attach, however
180 	 * during early init we do not have a device pointer
181 	 * and thus no unit number.
182 	 */
183 	maj = cdevsw_lookup_major(&ite_cdevsw);
184 	gp->g_itedev = makedev(maj, cf->cf_unit);
185 	return(1);
186 }
187 
188 void
189 iteattach(device_t parent, device_t self, void *aux)
190 {
191 	struct grf_softc *gp;
192 	struct ite_softc *ip;
193 	int s;
194 
195 	gp = aux;
196 	if (self) {
197 		ip = device_private(self);
198 
199 		s = spltty();
200 		if (con_itesoftc.grf != NULL &&
201 		    con_itesoftc.grf->g_unit == gp->g_unit) {
202 			/*
203 			 * console reinit copy params over.
204 			 * and console always gets keyboard
205 			 */
206 			memcpy(&ip->grf, &con_itesoftc.grf,
207 			    (char *)&ip[1] - (char *)&ip->grf);
208 			con_itesoftc.grf = NULL;
209 			kbd_ite = ip;
210 		}
211 		ip->grf = gp;
212 		splx(s);
213 
214 		iteinit(gp->g_itedev);
215 		printf(": rows %d cols %d", ip->rows, ip->cols);
216 		printf(" repeat at (%d/100)s next at (%d/100)s",
217 		    start_repeat_timeo, next_repeat_timeo);
218 
219 		if (kbd_ite == NULL)
220 			kbd_ite = ip;
221 		if (kbd_ite == ip)
222 			printf(" has keyboard");
223 		printf("\n");
224 		ip->flags |= ITE_ATTACHED;
225 	} else {
226 		if (con_itesoftc.grf != NULL &&
227 		    con_itesoftc.grf->g_conpri > gp->g_conpri)
228 			return;
229 		con_itesoftc.grf = gp;
230 		con_itesoftc.tabs = cons_tabs;
231 	}
232 }
233 
234 struct ite_softc *
235 getitesp(dev_t dev)
236 {
237 	if (amiga_realconfig && con_itesoftc.grf == NULL)
238 		return(device_lookup_private(&ite_cd, ITEUNIT(dev)));
239 
240 	if (con_itesoftc.grf == NULL)
241 		panic("no ite_softc for console");
242 	return(&con_itesoftc);
243 }
244 
245 /*
246  * cons.c entry points into ite device.
247  */
248 
249 /*
250  * Return a priority in consdev->cn_pri field highest wins.  This function
251  * is called before any devices have been probed.
252  */
253 void
254 itecnprobe(struct consdev *cd)
255 {
256 	/*
257 	 * return priority of the best ite (already picked from attach)
258 	 * or CN_DEAD.
259 	 */
260 	if (con_itesoftc.grf == NULL)
261 		cd->cn_pri = CN_DEAD;
262 	else {
263 		cd->cn_pri = con_itesoftc.grf->g_conpri;
264 		cd->cn_dev = con_itesoftc.grf->g_itedev;
265 	}
266 }
267 
268 /* audio bell stuff */
269 void
270 init_bell(void)
271 {
272 	if (bsamplep != NULL)
273 		return;
274 	bsamplep = alloc_chipmem(20);
275 	if (bsamplep == NULL)
276 		panic("no chipmem for ite_bell");
277 
278 	memcpy(bsamplep, sample, 20);
279 }
280 
281 void
282 ite_bell(void)
283 {
284 	u_int clock;
285 	u_int period;
286 	u_int count;
287 
288 	clock = 3579545; 	/* PAL 3546895 */
289 
290 	/*
291 	 * the number of clock ticks per sample byte must be > 124
292 	 * ergo bpitch must be < clock / 124*20
293 	 * i.e. ~1443, 1300 to be safe (PAL etc.). also not zero obviously
294 	 */
295 	period = clock / (bpitch * 20);
296 	count = bmsec * bpitch / 1000;
297 
298 	play_sample(10, PREP_DMA_MEM(bsamplep), period, bvolume, 0x3, count);
299 }
300 
301 void
302 itecninit(struct consdev *cd)
303 {
304 	struct ite_softc *ip;
305 
306 	ip = getitesp(cd->cn_dev);
307 	iteinit(cd->cn_dev);
308 	ip->flags |= ITE_ACTIVE | ITE_ISCONS;
309 
310 #ifdef DRACO
311 	if (!is_draco())
312 #endif
313 	init_bell();
314 }
315 
316 /*
317  * ite_cnfinish() is called in ite_init() when the device is
318  * being probed in the normal fasion, thus we can finish setting
319  * up this ite now that the system is more functional.
320  */
321 void
322 ite_cnfinish(struct ite_softc *ip)
323 {
324 	static int done;
325 
326 	if (done)
327 		return;
328 	done = 1;
329 }
330 
331 int
332 itecngetc(dev_t dev)
333 {
334 	int c;
335 
336 	/* XXX this should be moved */
337 	kbdenable();
338 	do {
339 		c = kbdgetcn();
340 		c = ite_cnfilter(c, ITEFILT_CONSOLE);
341 	} while (c == -1);
342 	return (c);
343 }
344 
345 void
346 itecnputc(dev_t dev, int c)
347 {
348 	static int paniced;
349 	struct ite_softc *ip;
350 	char ch;
351 
352 	ip = getitesp(dev);
353 	ch = c;
354 
355 	if (panicstr && !paniced &&
356 	    (ip->flags & (ITE_ACTIVE | ITE_INGRF)) != ITE_ACTIVE) {
357 		ite_on(dev, 3);
358 		paniced = 1;
359 	}
360 	iteputchar(ch, ip);
361 }
362 
363 void
364 itecnpollc(dev_t dev, int on)
365 {
366 }
367 
368 /*
369  * standard entry points to the device.
370  */
371 
372 /*
373  * iteinit() is the standard entry point for initialization of
374  * an ite device, it is also called from ite_cninit().
375  *
376  */
377 void
378 iteinit(dev_t dev)
379 {
380 	struct ite_softc *ip;
381 	static int kbdmap_loaded = 0;
382 
383 	ip = getitesp(dev);
384 	if (ip->flags & ITE_INITED)
385 		return;
386 	if (kbdmap_loaded == 0) {
387 		memcpy(&kbdmap, &ascii_kbdmap, sizeof(struct kbdmap));
388 		kbdmap_loaded = 1;
389 	}
390 
391 	callout_init(&repeat_ch, 0);
392 
393 	ip->cursorx = 0;
394 	ip->cursory = 0;
395 	if (ip->grf->g_iteinit == NULL)
396 		return;  /* grf has no console */
397 	SUBR_INIT(ip);
398 	SUBR_CURSOR(ip, DRAW_CURSOR);
399 	if (ip->tabs == NULL)
400 		ip->tabs = malloc(MAX_TABS * sizeof(u_char),M_DEVBUF,M_WAITOK);
401 	ite_reset(ip);
402 	ip->flags |= ITE_INITED;
403 }
404 
405 int
406 iteopen(dev_t dev, int mode, int devtype, struct lwp *l)
407 {
408 	struct ite_softc *ip;
409 	struct tty *tp;
410 	int error, first, unit;
411 
412 	unit = ITEUNIT(dev);
413 	first = 0;
414 
415 	if (unit >= ite_cd.cd_ndevs)
416 		return ENXIO;
417 	ip = getitesp(dev);
418 	if (ip == NULL)
419 		return ENXIO;
420 	if ((ip->flags & ITE_ATTACHED) == 0)
421 		return ENXIO;
422 
423 	if (ip->tp == NULL) {
424 		tp = ip->tp = tty_alloc();
425 		tty_attach(tp);
426 	} else
427 		tp = ip->tp;
428 
429 	if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
430 		return (EBUSY);
431 
432 	if ((ip->flags & ITE_ACTIVE) == 0) {
433 		ite_on(dev, 0);
434 		first = 1;
435 	}
436 	tp->t_oproc = itestart;
437 	tp->t_param = ite_param;
438 	tp->t_dev = dev;
439 	if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) {
440 		ttychars(tp);
441 		tp->t_iflag = TTYDEF_IFLAG;
442 		tp->t_oflag = TTYDEF_OFLAG;
443 		tp->t_cflag = TTYDEF_CFLAG;
444 		tp->t_lflag = TTYDEF_LFLAG;
445 		tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
446 		tp->t_state = TS_CARR_ON;
447 		ttsetwater(tp);
448 	}
449 	error = ttyopen(tp, 0, mode & O_NONBLOCK);
450 	if (error)
451 		goto bad;
452 
453 	error = tp->t_linesw->l_open(dev, tp);
454 	if (error)
455 		goto bad;
456 
457 	tp->t_winsize.ws_row = ip->rows;
458 	tp->t_winsize.ws_col = ip->cols;
459 	kbdenable();
460 	return (0);
461 bad:
462 	if (first)
463 		ite_off(dev, 0);
464 	return (error);
465 }
466 
467 int
468 iteclose(dev_t dev, int flag, int mode, struct lwp *l)
469 {
470 	struct tty *tp;
471 
472 	tp = getitesp(dev)->tp;
473 
474 	KDASSERT(tp);
475 	tp->t_linesw->l_close(tp, flag);
476 	ttyclose(tp);
477 	ite_off(dev, 0);
478 	return (0);
479 }
480 
481 int
482 iteread(dev_t dev, struct uio *uio, int flag)
483 {
484 	struct tty *tp;
485 
486 	tp = getitesp(dev)->tp;
487 
488 	KDASSERT(tp);
489 	return tp->t_linesw->l_read(tp, uio, flag);
490 }
491 
492 int
493 itewrite(dev_t dev, struct uio *uio, int flag)
494 {
495 	struct tty *tp;
496 
497 	tp = getitesp(dev)->tp;
498 
499 	KDASSERT(tp);
500 	return tp->t_linesw->l_write(tp, uio, flag);
501 }
502 
503 int
504 itepoll(dev_t dev, int events, struct lwp *l)
505 {
506 	struct tty *tp;
507 
508 	tp = getitesp(dev)->tp;
509 
510 	KDASSERT(tp);
511 	return ((*tp->t_linesw->l_poll)(tp, events, l));
512 }
513 
514 struct tty *
515 itetty(dev_t dev)
516 {
517 	return (getitesp(dev)->tp);
518 }
519 
520 int
521 iteioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
522 {
523 	struct iterepeat *irp;
524 	struct ite_softc *ip;
525 	struct itebell *ib;
526 	struct tty *tp;
527 	int error;
528 
529 	ip = getitesp(dev);
530 	tp = ip->tp;
531 
532 	KDASSERT(tp);
533 
534 	error = tp->t_linesw->l_ioctl(tp, cmd, addr, flag, l);
535 	if (error != EPASSTHROUGH)
536 		return (error);
537 	error = ttioctl(tp, cmd, addr, flag, l);
538 	if (error != EPASSTHROUGH)
539 		return (error);
540 
541 	switch (cmd) {
542 	case ITEIOCGBELL:
543 		ib = (struct itebell *)addr;
544 		ib->volume = bvolume;
545 		ib->pitch = bpitch;
546 		ib->msec = bmsec;
547 		return (0);
548 	case ITEIOCSBELL:
549 		ib = (struct itebell *)addr;
550 
551 		if (ib->pitch > MAXBPITCH || ib->pitch < MINBPITCH ||
552 		    ib->volume > MAXBVOLUME || ib->msec > MAXBTIME)
553 			return (EINVAL);
554 		bvolume = ib->volume;
555 		bpitch = ib->pitch;
556 		bmsec = ib->msec;
557 		return (0);
558 	case ITEIOCSKMAP:
559 		if (addr == 0)
560 			return(EFAULT);
561 		memcpy(&kbdmap, addr, sizeof(struct kbdmap));
562 		return(0);
563 	case ITEIOCGKMAP:
564 		if (addr == NULL)
565 			return(EFAULT);
566 		memcpy(addr, &kbdmap, sizeof(struct kbdmap));
567 		return(0);
568 	case ITEIOCGREPT:
569 		irp = (struct iterepeat *)addr;
570 		irp->start = start_repeat_timeo;
571 		irp->next = next_repeat_timeo;
572 		return (0);
573 	case ITEIOCSREPT:
574 		irp = (struct iterepeat *)addr;
575 		if (irp->start < ITEMINREPEAT && irp->next < ITEMINREPEAT)
576 			return(EINVAL);
577 		start_repeat_timeo = irp->start;
578 		next_repeat_timeo = irp->next;
579 		return(0);
580 	}
581 #if NGRFCC > 0
582 	/* XXX */
583 	if (minor(dev) == 0) {
584 		error = ite_grf_ioctl(ip, cmd, addr, flag, l);
585 		if (error >= 0)
586 			return (error);
587 	}
588 #endif
589 	return (EPASSTHROUGH);
590 }
591 
592 void
593 itestart(struct tty *tp)
594 {
595 	struct clist *rbp;
596 	struct ite_softc *ip;
597 	u_char buf[ITEBURST];
598 	int s, len;
599 
600 	ip = getitesp(tp->t_dev);
601 
602 	KDASSERT(tp);
603 
604 	s = spltty(); {
605 		if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
606 			goto out;
607 
608 		tp->t_state |= TS_BUSY;
609 		rbp = &tp->t_outq;
610 
611 		len = q_to_b(rbp, buf, ITEBURST);
612 	} splx(s);
613 
614 	/* Here is a really good place to implement pre/jumpscroll() */
615 	ite_putstr(buf, len, tp->t_dev);
616 
617 	s = spltty(); {
618 		tp->t_state &= ~TS_BUSY;
619 		/* we have characters remaining. */
620 		if (ttypull(tp)) {
621 			tp->t_state |= TS_TIMEOUT;
622 			callout_schedule(&tp->t_rstrt_ch, 1);
623 		}
624 	}
625  out:
626 	splx(s);
627 }
628 
629 void
630 ite_on(dev_t dev, int flag)
631 {
632 	struct ite_softc *ip;
633 	int unit;
634 
635 	unit = ITEUNIT(dev);
636 	ip = getitesp(dev);
637 
638 	/* force ite active, overriding graphics mode */
639 	if (flag & 1) {
640 		ip->flags |= ITE_ACTIVE;
641 		ip->flags &= ~(ITE_INGRF | ITE_INITED);
642 	}
643 	/* leave graphics mode */
644 	if (flag & 2) {
645 		ip->flags &= ~ITE_INGRF;
646 		if ((ip->flags & ITE_ACTIVE) == 0)
647 			return;
648 	}
649 	ip->flags |= ITE_ACTIVE;
650 	if (ip->flags & ITE_INGRF)
651 		return;
652 	iteinit(dev);
653 }
654 
655 void
656 ite_off(dev_t dev, int flag)
657 {
658 	struct ite_softc *ip;
659 
660 	ip = getitesp(dev);
661 	if (flag & 2)
662 		ip->flags |= ITE_INGRF;
663 	if ((ip->flags & ITE_ACTIVE) == 0)
664 		return;
665 	if ((flag & 1) ||
666 	    (ip->flags & (ITE_INGRF | ITE_ISCONS | ITE_INITED)) == ITE_INITED)
667 		SUBR_DEINIT(ip);
668 	/* XXX hmm grfon() I think wants this to  go inactive. */
669 	if ((flag & 2) == 0)
670 		ip->flags &= ~ITE_ACTIVE;
671 }
672 
673 /* XXX called after changes made in underlying grf layer. */
674 /* I want to nuke this */
675 void
676 ite_reinit(dev_t dev)
677 {
678 	struct ite_softc *ip;
679 
680 	ip = getitesp(dev);
681 	ip->flags &= ~ITE_INITED;
682 	iteinit(dev);
683 }
684 
685 int
686 ite_param(struct tty *tp, struct termios *t)
687 {
688 	tp->t_ispeed = t->c_ispeed;
689 	tp->t_ospeed = t->c_ospeed;
690 	tp->t_cflag = t->c_cflag;
691 	return (0);
692 }
693 
694 void
695 ite_reset(struct ite_softc *ip)
696 {
697 	int i;
698 
699 	ip->curx = 0;
700 	ip->cury = 0;
701 	ip->attribute = ATTR_NOR;
702 	ip->save_curx = 0;
703 	ip->save_cury = 0;
704 	ip->save_attribute = ATTR_NOR;
705 	ip->ap = ip->argbuf;
706 	ip->emul_level = 0;
707 	ip->eightbit_C1 = 0;
708 	ip->top_margin = 0;
709 	ip->bottom_margin = ip->rows - 1;
710 	ip->inside_margins = 0;
711 	ip->linefeed_newline = 0;
712 	ip->auto_wrap = ite_default_wrap;
713 	ip->cursor_appmode = 0;
714 	ip->keypad_appmode = 0;
715 	ip->imode = 0;
716 	ip->key_repeat = 1;
717 	memset(ip->tabs, 0, ip->cols);
718 	for (i = 0; i < ip->cols; i++)
719 		ip->tabs[i] = ((i & 7) == 0);
720 }
721 
722 /*
723  * has to be global because of the shared filters.
724  */
725 static u_char key_mod;
726 static u_char last_dead;
727 
728 /* Used in console at startup only */
729 int
730 ite_cnfilter(u_char c, enum caller caller)
731 {
732 	struct key key;
733 	u_char code, up, mask;
734 	int s, i;
735 
736 	up = c & 0x80 ? 1 : 0;
737 	c &= 0x7f;
738 	code = 0;
739 
740 	s = spltty();
741 
742 	i = (int)c - KBD_LEFT_SHIFT;
743 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
744 		mask = 1 << i;
745 		if (up)
746 			key_mod &= ~mask;
747 		else
748 			key_mod |= mask;
749 		splx(s);
750 		return -1;
751 	}
752 
753 	if (up) {
754 		splx(s);
755 		return -1;
756 	}
757 
758 	/* translate modifiers */
759 	if (key_mod & KBD_MOD_SHIFT) {
760 		if (key_mod & KBD_MOD_ALT)
761 			key = kbdmap.alt_shift_keys[c];
762 		else
763 			key = kbdmap.shift_keys[c];
764 	} else if (key_mod & KBD_MOD_ALT)
765 		key = kbdmap.alt_keys[c];
766 	else {
767 		key = kbdmap.keys[c];
768 		/* if CAPS and key is CAPable (no pun intended) */
769 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
770 			key = kbdmap.shift_keys[c];
771 	}
772 	code = key.code;
773 
774 	/* if string return */
775 	if (key.mode & (KBD_MODE_STRING | KBD_MODE_KPAD)) {
776 		splx(s);
777 		return -1;
778 	}
779 	/* handle dead keys */
780 	if (key.mode & KBD_MODE_DEAD) {
781 		/* if entered twice, send accent itself */
782 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
783 			last_dead = 0;
784 		else {
785 			last_dead = key.mode & KBD_MODE_ACCMASK;
786 			splx(s);
787 			return -1;
788 		}
789 	}
790 	if (last_dead) {
791 		/* can't apply dead flag to string-keys */
792 		if (code >= '@' && code < 0x7f)
793 			code =
794 			    acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
795 		last_dead = 0;
796 	}
797 	if (key_mod & KBD_MOD_CTRL)
798 		code &= 0x1f;
799 	if (key_mod & KBD_MOD_META)
800 		code |= 0x80;
801 
802 	/* do console mapping. */
803 	code = code == '\r' ? '\n' : code;
804 
805 	splx(s);
806 	return (code);
807 }
808 
809 /* And now the old stuff. */
810 
811 /* these are used to implement repeating keys.. */
812 static u_char last_char;
813 static u_char tout_pending;
814 
815 /*ARGSUSED*/
816 static void
817 repeat_handler(void *arg)
818 {
819 	tout_pending = 0;
820 	if (last_char)
821 		ite_filter(last_char, ITEFILT_REPEATER);
822 }
823 
824 void
825 ite_filter(u_char c, enum caller caller)
826 {
827 	struct tty *kbd_tty;
828 	u_char code, *str, up, mask;
829 	struct key key;
830 	int s, i;
831 
832 	if (kbd_ite == NULL || kbd_ite->tp == NULL)
833 		return;
834 
835 	kbd_tty = kbd_ite->tp;
836 
837 	/* have to make sure we're at spltty in here */
838 	s = spltty();
839 
840 	up = c & 0x80 ? 1 : 0;
841 	c &= 0x7f;
842 	code = 0;
843 
844 	i = (int)c - KBD_LEFT_SHIFT;
845 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
846 		mask = 1 << i;
847 		if (up)
848 			key_mod &= ~mask;
849 		else
850 			key_mod |= mask;
851 		splx(s);
852 		return;
853 	}
854 	/* stop repeating on up event */
855 	if (up) {
856 		if (tout_pending) {
857 			callout_stop(&repeat_ch);
858 			tout_pending = 0;
859 			last_char = 0;
860 		}
861 		splx(s);
862 		return;
863 	} else if (tout_pending && last_char != c) {
864 		/* different character, stop also */
865 		callout_stop(&repeat_ch);
866 		tout_pending = 0;
867 		last_char = 0;
868 	}
869 	/* Safety button, switch back to ascii keymap. */
870 	if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x50) {
871 		memcpy(&kbdmap, &ascii_kbdmap, sizeof(struct kbdmap));
872 
873 		splx(s);
874 		return;
875 #ifdef DDB
876 	} else if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x59) {
877 		Debugger();
878 		splx(s);
879 		return;
880 #endif
881 	}
882 	/* translate modifiers */
883 	if (key_mod & KBD_MOD_SHIFT) {
884 		if (key_mod & KBD_MOD_ALT)
885 			key = kbdmap.alt_shift_keys[c];
886 		else
887 			key = kbdmap.shift_keys[c];
888 	} else if (key_mod & KBD_MOD_ALT)
889 		key = kbdmap.alt_keys[c];
890 	else {
891 		key = kbdmap.keys[c];
892 		/* if CAPS and key is CAPable (no pun intended) */
893 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
894 			key = kbdmap.shift_keys[c];
895 	}
896 	code = key.code;
897 
898 	/*
899 	 * arrange to repeat the keystroke. By doing this at the level
900 	 * of scan-codes, we can have function keys, and keys that
901 	 * send strings, repeat too. This also entitles an additional
902 	 * overhead, since we have to do the conversion each time, but
903 	 * I guess that's ok.
904 	 */
905 	if (!tout_pending && caller == ITEFILT_TTY && kbd_ite->key_repeat) {
906 		tout_pending = 1;
907 		last_char = c;
908 		callout_reset(&repeat_ch,
909 		    start_repeat_timeo * hz / 100, repeat_handler, NULL);
910 	} else if (!tout_pending && caller == ITEFILT_REPEATER &&
911 	    kbd_ite->key_repeat) {
912 		tout_pending = 1;
913 		last_char = c;
914 		callout_reset(&repeat_ch,
915 		    next_repeat_timeo * hz / 100, repeat_handler, NULL);
916 	}
917 	/* handle dead keys */
918 	if (key.mode & KBD_MODE_DEAD) {
919 		/* if entered twice, send accent itself */
920 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
921 			last_dead = 0;
922 		else {
923 			last_dead = key.mode & KBD_MODE_ACCMASK;
924 			splx(s);
925 			return;
926 		}
927 	}
928 	if (last_dead) {
929 		/* can't apply dead flag to string-keys */
930 		if (!(key.mode & KBD_MODE_STRING) && code >= '@' &&
931 		    code < 0x7f)
932 			code = acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
933 		last_dead = 0;
934 	}
935 	/* if not string, apply META and CTRL modifiers */
936 	if (!(key.mode & KBD_MODE_STRING)
937 	    && (!(key.mode & KBD_MODE_KPAD) ||
938 		(kbd_ite && !kbd_ite->keypad_appmode))) {
939 		if (key_mod & KBD_MOD_CTRL)
940 			code &= 0x1f;
941 		if (key_mod & KBD_MOD_META)
942 			code |= 0x80;
943 	} else if ((key.mode & KBD_MODE_KPAD) &&
944 	    (kbd_ite && kbd_ite->keypad_appmode)) {
945 		static char in[] = {
946 		    0x0f /* 0 */, 0x1d /* 1 */, 0x1e /* 2 */, 0x1f /* 3 */,
947 		    0x2d /* 4 */, 0x2e /* 5 */, 0x2f /* 6 */, 0x3d /* 7 */,
948 		    0x3e /* 8 */, 0x3f /* 9 */, 0x4a /* - */, 0x5e /* + */,
949 		    0x3c /* . */, 0x43 /* e */, 0x5a /* ( */, 0x5b /* ) */,
950 		    0x5c /* / */, 0x5d /* * */
951 		};
952 		static const char *out = "pqrstuvwxymlnMPQRS";
953 		char *cp = strchr(in, c);
954 
955 		/*
956 		 * keypad-appmode sends SS3 followed by the above
957 		 * translated character
958 		 */
959 		kbd_tty->t_linesw->l_rint(27, kbd_tty);
960 		kbd_tty->t_linesw->l_rint('O', kbd_tty);
961 		kbd_tty->t_linesw->l_rint(out[cp - in], kbd_tty);
962 		splx(s);
963 		return;
964 	} else {
965 		/* *NO* I don't like this.... */
966 		static u_char app_cursor[] =
967 		{
968 		    3, 27, 'O', 'A',
969 		    3, 27, 'O', 'B',
970 		    3, 27, 'O', 'C',
971 		    3, 27, 'O', 'D'};
972 
973 		str = kbdmap.strings + code;
974 		/*
975 		 * if this is a cursor key, AND it has the default
976 		 * keymap setting, AND we're in app-cursor mode, switch
977 		 * to the above table. This is *nasty* !
978 		 */
979 		if (c >= 0x4c && c <= 0x4f && kbd_ite->cursor_appmode
980 		    && !memcmp(str, "\x03\x1b[", 3) &&
981 		    strchr("ABCD", str[3]))
982 			str = app_cursor + 4 * (str[3] - 'A');
983 
984 		/*
985 		 * using a length-byte instead of 0-termination allows
986 		 * to embed \0 into strings, although this is not used
987 		 * in the default keymap
988 		 */
989 		for (i = *str++; i; i--)
990 			kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
991 		splx(s);
992 		return;
993 	}
994 	kbd_tty->t_linesw->l_rint(code, kbd_tty);
995 
996 	splx(s);
997 	return;
998 }
999 
1000 /* helper functions, makes the code below more readable */
1001 inline static void
1002 ite_sendstr(const char *str)
1003 {
1004 	struct tty *kbd_tty;
1005 
1006 	kbd_tty = kbd_ite->tp;
1007 	KDASSERT(kbd_tty);
1008 	while (*str)
1009 		kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
1010 }
1011 
1012 static void
1013 alignment_display(struct ite_softc *ip)
1014 {
1015   int i, j;
1016 
1017   for (j = 0; j < ip->rows; j++)
1018     for (i = 0; i < ip->cols; i++)
1019       SUBR_PUTC(ip, 'E', j, i, ATTR_NOR);
1020   attrclr(ip, 0, 0, ip->rows, ip->cols);
1021   SUBR_CURSOR(ip, DRAW_CURSOR);
1022 }
1023 
1024 inline static void
1025 snap_cury(struct ite_softc *ip)
1026 {
1027   if (ip->inside_margins)
1028     {
1029       if (ip->cury < ip->top_margin)
1030 	ip->cury = ip->top_margin;
1031       if (ip->cury > ip->bottom_margin)
1032 	ip->cury = ip->bottom_margin;
1033     }
1034 }
1035 
1036 inline static void
1037 ite_dnchar(struct ite_softc *ip, int n)
1038 {
1039   n = min(n, ip->cols - ip->curx);
1040   if (n < ip->cols - ip->curx)
1041     {
1042       SUBR_SCROLL(ip, ip->cury, ip->curx + n, n, SCROLL_LEFT);
1043       attrmov(ip, ip->cury, ip->curx + n, ip->cury, ip->curx,
1044 	      1, ip->cols - ip->curx - n);
1045       attrclr(ip, ip->cury, ip->cols - n, 1, n);
1046     }
1047   while (n-- > 0)
1048     SUBR_PUTC(ip, ' ', ip->cury, ip->cols - n - 1, ATTR_NOR);
1049   SUBR_CURSOR(ip, DRAW_CURSOR);
1050 }
1051 
1052 inline static void
1053 ite_inchar(struct ite_softc *ip, int n)
1054 {
1055   n = min(n, ip->cols - ip->curx);
1056   if (n < ip->cols - ip->curx)
1057     {
1058       SUBR_SCROLL(ip, ip->cury, ip->curx, n, SCROLL_RIGHT);
1059       attrmov(ip, ip->cury, ip->curx, ip->cury, ip->curx + n,
1060 	      1, ip->cols - ip->curx - n);
1061       attrclr(ip, ip->cury, ip->curx, 1, n);
1062     }
1063   while (n--)
1064     SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1065   SUBR_CURSOR(ip, DRAW_CURSOR);
1066 }
1067 
1068 inline static void
1069 ite_clrtoeol(struct ite_softc *ip)
1070 {
1071   int y = ip->cury, x = ip->curx;
1072   if (ip->cols - x > 0)
1073     {
1074       SUBR_CLEAR(ip, y, x, 1, ip->cols - x);
1075       attrclr(ip, y, x, 1, ip->cols - x);
1076       SUBR_CURSOR(ip, DRAW_CURSOR);
1077     }
1078 }
1079 
1080 inline static void
1081 ite_clrtobol(struct ite_softc *ip)
1082 {
1083   int y = ip->cury, x = min(ip->curx + 1, ip->cols);
1084   SUBR_CLEAR(ip, y, 0, 1, x);
1085   attrclr(ip, y, 0, 1, x);
1086   SUBR_CURSOR(ip, DRAW_CURSOR);
1087 }
1088 
1089 inline static void
1090 ite_clrline(struct ite_softc *ip)
1091 {
1092   int y = ip->cury;
1093   SUBR_CLEAR(ip, y, 0, 1, ip->cols);
1094   attrclr(ip, y, 0, 1, ip->cols);
1095   SUBR_CURSOR(ip, DRAW_CURSOR);
1096 }
1097 
1098 
1099 
1100 inline static void
1101 ite_clrtoeos(struct ite_softc *ip)
1102 {
1103   ite_clrtoeol(ip);
1104   if (ip->cury < ip->rows - 1)
1105     {
1106       SUBR_CLEAR(ip, ip->cury + 1, 0, ip->rows - 1 - ip->cury, ip->cols);
1107       attrclr(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols);
1108       SUBR_CURSOR(ip, DRAW_CURSOR);
1109     }
1110 }
1111 
1112 inline static void
1113 ite_clrtobos(struct ite_softc *ip)
1114 {
1115   ite_clrtobol(ip);
1116   if (ip->cury > 0)
1117     {
1118       SUBR_CLEAR(ip, 0, 0, ip->cury, ip->cols);
1119       attrclr(ip, 0, 0, ip->cury, ip->cols);
1120       SUBR_CURSOR(ip, DRAW_CURSOR);
1121     }
1122 }
1123 
1124 inline static void
1125 ite_clrscreen(struct ite_softc *ip)
1126 {
1127   SUBR_CLEAR(ip, 0, 0, ip->rows, ip->cols);
1128   attrclr(ip, 0, 0, ip->rows, ip->cols);
1129   SUBR_CURSOR(ip, DRAW_CURSOR);
1130 }
1131 
1132 
1133 
1134 inline static void
1135 ite_dnline(struct ite_softc *ip, int n)
1136 {
1137   /* interesting.. if the cursor is outside the scrolling
1138      region, this command is simply ignored.. */
1139   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1140     return;
1141 
1142   n = min(n, ip->bottom_margin + 1 - ip->cury);
1143   if (n <= ip->bottom_margin - ip->cury)
1144     {
1145       SUBR_SCROLL(ip, ip->cury + n, 0, n, SCROLL_UP);
1146       attrmov(ip, ip->cury + n, 0, ip->cury, 0,
1147 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1148     }
1149   SUBR_CLEAR(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1150   attrclr(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1151   SUBR_CURSOR(ip, DRAW_CURSOR);
1152 }
1153 
1154 inline static void
1155 ite_inline(struct ite_softc *ip, int n)
1156 {
1157   /* interesting.. if the cursor is outside the scrolling
1158      region, this command is simply ignored.. */
1159   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1160     return;
1161 
1162   n = min(n, ip->bottom_margin + 1 - ip->cury);
1163   if (n <= ip->bottom_margin - ip->cury)
1164     {
1165       SUBR_SCROLL(ip, ip->cury, 0, n, SCROLL_DOWN);
1166       attrmov(ip, ip->cury, 0, ip->cury + n, 0,
1167 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1168     }
1169   SUBR_CLEAR(ip, ip->cury, 0, n, ip->cols);
1170   attrclr(ip, ip->cury, 0, n, ip->cols);
1171   SUBR_CURSOR(ip, DRAW_CURSOR);
1172 }
1173 
1174 inline static void
1175 ite_lf(struct ite_softc *ip)
1176 {
1177   ++ip->cury;
1178   if ((ip->cury == ip->bottom_margin+1) || (ip->cury == ip->rows))
1179     {
1180       ip->cury--;
1181       SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1182       ite_clrline(ip);
1183     }
1184   SUBR_CURSOR(ip, MOVE_CURSOR);
1185   clr_attr(ip, ATTR_INV);
1186 }
1187 
1188 inline static void
1189 ite_crlf(struct ite_softc *ip)
1190 {
1191   ip->curx = 0;
1192   ite_lf (ip);
1193 }
1194 
1195 inline static void
1196 ite_cr(struct ite_softc *ip)
1197 {
1198   if (ip->curx)
1199     {
1200       ip->curx = 0;
1201       SUBR_CURSOR(ip, MOVE_CURSOR);
1202     }
1203 }
1204 
1205 inline static void
1206 ite_rlf(struct ite_softc *ip)
1207 {
1208   ip->cury--;
1209   if ((ip->cury < 0) || (ip->cury == ip->top_margin - 1))
1210     {
1211       ip->cury++;
1212       SUBR_SCROLL(ip, ip->top_margin, 0, 1, SCROLL_DOWN);
1213       ite_clrline(ip);
1214     }
1215   SUBR_CURSOR(ip, MOVE_CURSOR);
1216   clr_attr(ip, ATTR_INV);
1217 }
1218 
1219 inline static int
1220 atoi(const char *cp)
1221 {
1222   int n;
1223 
1224   for (n = 0; *cp && *cp >= '0' && *cp <= '9'; cp++)
1225     n = n * 10 + *cp - '0';
1226 
1227   return n;
1228 }
1229 
1230 inline static int
1231 ite_argnum(struct ite_softc *ip)
1232 {
1233   char ch;
1234   int n;
1235 
1236   /* convert argument string into number */
1237   if (ip->ap == ip->argbuf)
1238     return 1;
1239   ch = *ip->ap;
1240   *ip->ap = 0;
1241   n = atoi (ip->argbuf);
1242   *ip->ap = ch;
1243 
1244   return n;
1245 }
1246 
1247 inline static int
1248 ite_zargnum(struct ite_softc *ip)
1249 {
1250   char ch;
1251   int n;
1252 
1253   /* convert argument string into number */
1254   if (ip->ap == ip->argbuf)
1255     return 0;
1256   ch = *ip->ap;
1257   *ip->ap = 0;
1258   n = atoi (ip->argbuf);
1259   *ip->ap = ch;
1260 
1261   return n;	/* don't "n ? n : 1" here, <CSI>0m != <CSI>1m ! */
1262 }
1263 
1264 void
1265 ite_putstr(const char *s, int len, dev_t dev)
1266 {
1267 	struct ite_softc *ip;
1268 	int i;
1269 
1270 	ip = getitesp(dev);
1271 
1272 	/* XXX avoid problems */
1273 	if ((ip->flags & (ITE_ACTIVE|ITE_INGRF)) != ITE_ACTIVE)
1274 	  	return;
1275 
1276 	SUBR_CURSOR(ip, START_CURSOROPT);
1277 	for (i = 0; i < len; i++)
1278 		if (s[i])
1279 			iteputchar(s[i], ip);
1280 	SUBR_CURSOR(ip, END_CURSOROPT);
1281 }
1282 
1283 static void
1284 iteprecheckwrap(struct ite_softc *ip)
1285 {
1286 	if (ip->auto_wrap && ip->curx == ip->cols) {
1287 		ip->curx = 0;
1288 		clr_attr(ip, ATTR_INV);
1289 		if (++ip->cury >= ip->bottom_margin + 1) {
1290 			ip->cury = ip->bottom_margin;
1291 			SUBR_CURSOR(ip, MOVE_CURSOR);
1292 			SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1293 			ite_clrtoeol(ip);
1294 		} else
1295 			SUBR_CURSOR(ip, MOVE_CURSOR);
1296 	}
1297 }
1298 
1299 static void
1300 itecheckwrap(struct ite_softc *ip)
1301 {
1302 #if 0
1303 	if (++ip->curx == ip->cols) {
1304 		if (ip->auto_wrap) {
1305 			ip->curx = 0;
1306 			clr_attr(ip, ATTR_INV);
1307 			if (++ip->cury >= ip->bottom_margin + 1) {
1308 				ip->cury = ip->bottom_margin;
1309 				SUBR_CURSOR(ip, MOVE_CURSOR);
1310 				SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1311 				ite_clrtoeol(ip);
1312 				return;
1313 			}
1314 		} else
1315 			/* stay there if no autowrap.. */
1316 			ip->curx--;
1317 	}
1318 #else
1319 	if (ip->curx < ip->cols) {
1320 		ip->curx++;
1321 		SUBR_CURSOR(ip, MOVE_CURSOR);
1322 	}
1323 #endif
1324 }
1325 
1326 void
1327 iteputchar(register int c, struct ite_softc *ip)
1328 {
1329 	struct tty *kbd_tty;
1330 	int n, x, y;
1331 	char *cp;
1332 
1333 	if (kbd_ite == NULL)
1334 		kbd_tty = NULL;
1335 	else
1336 		kbd_tty = kbd_ite->tp;
1337 
1338 	if (ip->escape) {
1339 		switch (ip->escape) {
1340 		case ESC:
1341 			switch (c) {
1342 				/*
1343 				 * first 7bit equivalents for the
1344 				 * 8bit control characters
1345 				 */
1346 			case 'D':
1347 				c = IND;
1348 				ip->escape = 0;
1349 				break;
1350 				/*
1351 				 * and fall into the next
1352 				 * switch below (same for all `break')
1353 				 */
1354 			case 'E':
1355 				c = NEL;
1356 				ip->escape = 0;
1357 				break;
1358 			case 'H':
1359 				c = HTS;
1360 				ip->escape = 0;
1361 				break;
1362 			case 'M':
1363 				c = RI;
1364 				ip->escape = 0;
1365 				break;
1366 			case 'N':
1367 				c = SS2;
1368 				ip->escape = 0;
1369 				break;
1370 			case 'O':
1371 				c = SS3;
1372 				ip->escape = 0;
1373 				break;
1374 			case 'P':
1375 				c = DCS;
1376 				ip->escape = 0;
1377 				break;
1378 			case '[':
1379 				c = CSI;
1380 				ip->escape = 0;
1381 				break;
1382 			case '\\':
1383 				c = ST;
1384 				ip->escape = 0;
1385 				break;
1386 			case ']':
1387 				c = OSC;
1388 				ip->escape = 0;
1389 				break;
1390 			case '^':
1391 				c = PM;
1392 				ip->escape = 0;
1393 				break;
1394 			case '_':
1395 				c = APC;
1396 				ip->escape = 0;
1397 				break;
1398 				/* introduces 7/8bit control */
1399 			case ' ':
1400 				/* can be followed by either F or G */
1401 				ip->escape = ' ';
1402 				break;
1403 			/*
1404 			 * a lot of character set selections, not yet
1405 			 * used... 94-character sets:
1406 			 */
1407 			case '(':	/* G0 */
1408 			case ')':	/* G1 */
1409 				ip->escape = c;
1410 				return;
1411 			case '*':	/* G2 */
1412 			case '+':	/* G3 */
1413 			case 'B':	/* ASCII */
1414 			case 'A':	/* ISO latin 1 */
1415 			case '<':	/* user preferred suplemental */
1416 			case '0':	/* dec special graphics */
1417 			/*
1418 			 * 96-character sets:
1419 			 */
1420 			case '-':	/* G1 */
1421 			case '.':	/* G2 */
1422 			case '/':	/* G3 */
1423 			/*
1424 			 * national character sets:
1425 			 */
1426 			case '4':	/* dutch */
1427 			case '5':
1428 			case 'C':	/* finnish */
1429 			case 'R':	/* french */
1430 			case 'Q':	/* french canadian */
1431 			case 'K':	/* german */
1432 			case 'Y':	/* italian */
1433 			case '6':	/* norwegian/danish */
1434 				/*
1435 				 * note: %5 and %6 are not supported (two
1436 				 * chars..)
1437 				 */
1438 				ip->escape = 0;
1439 				/* just ignore for now */
1440 				return;
1441 			/*
1442 			 * locking shift modes (as you might guess, not
1443 			 * yet supported..)
1444 			 */
1445 			case '`':
1446 				ip->GR = ip->G1;
1447 				ip->escape = 0;
1448 				return;
1449 			case 'n':
1450 				ip->GL = ip->G2;
1451 				ip->escape = 0;
1452 				return;
1453 			case '}':
1454 				ip->GR = ip->G2;
1455 				ip->escape = 0;
1456 				return;
1457 			case 'o':
1458 				ip->GL = ip->G3;
1459 				ip->escape = 0;
1460 				return;
1461 			case '|':
1462 				ip->GR = ip->G3;
1463 				ip->escape = 0;
1464 				return;
1465 			case '#':
1466 				/* font width/height control */
1467 				ip->escape = '#';
1468 				return;
1469 			case 'c':
1470 				/* hard terminal reset .. */
1471 				ite_reset(ip);
1472 				SUBR_CURSOR(ip, MOVE_CURSOR);
1473 				ip->escape = 0;
1474 				return;
1475 			case '7':
1476 				ip->save_curx = ip->curx;
1477 				ip->save_cury = ip->cury;
1478 				ip->save_attribute = ip->attribute;
1479 				ip->escape = 0;
1480 				return;
1481 			case '8':
1482 				ip->curx = ip->save_curx;
1483 				ip->cury = ip->save_cury;
1484 				ip->attribute = ip->save_attribute;
1485 				SUBR_CURSOR(ip, MOVE_CURSOR);
1486 				ip->escape = 0;
1487 				return;
1488 			case '=':
1489 				ip->keypad_appmode = 1;
1490 				ip->escape = 0;
1491 				return;
1492 			case '>':
1493 				ip->keypad_appmode = 0;
1494 				ip->escape = 0;
1495 				return;
1496 			case 'Z':	/* request ID */
1497 				/* XXX not clean */
1498 				if (ip->emul_level == EMUL_VT100)
1499 					ite_sendstr("\033[?61;0c");
1500 				else
1501 					ite_sendstr("\033[?63;0c");
1502 				ip->escape = 0;
1503 				return;
1504 			default:
1505 				/*
1506 				 * default catch all for not recognized ESC
1507 				 * sequences
1508 				 */
1509 				ip->escape = 0;
1510 				return;
1511 			}
1512 			break;
1513 		case '(':
1514 		case ')':
1515 			ip->escape = 0;
1516 			return;
1517 		case ' ':
1518 			switch (c) {
1519 			case 'F':
1520 				ip->eightbit_C1 = 0;
1521 				ip->escape = 0;
1522 				return;
1523 			case 'G':
1524 				ip->eightbit_C1 = 1;
1525 				ip->escape = 0;
1526 				return;
1527 			default:
1528 				/* not supported */
1529 				ip->escape = 0;
1530 				return;
1531 			}
1532 			break;
1533 		case '#':
1534 			switch (c) {
1535 			case '5':
1536 				/* single height, single width */
1537 				ip->escape = 0;
1538 				return;
1539 			case '6':
1540 				/* double width, single height */
1541 				ip->escape = 0;
1542 				return;
1543 			case '3':
1544 				/* top half */
1545 				ip->escape = 0;
1546 				return;
1547 			case '4':
1548 				/* bottom half */
1549 				ip->escape = 0;
1550 				return;
1551 			case '8':
1552 				/* screen alignment pattern... */
1553 				alignment_display(ip);
1554 				ip->escape = 0;
1555 				return;
1556 			default:
1557 				ip->escape = 0;
1558 				return;
1559 			}
1560 			break;
1561 		case CSI:
1562 			/* the biggie... */
1563 			switch (c) {
1564 			case '0':
1565 			case '1':
1566 			case '2':
1567 			case '3':
1568 			case '4':
1569 			case '5':
1570 			case '6':
1571 			case '7':
1572 			case '8':
1573 			case '9':
1574 			case ';':
1575 			case '\"':
1576 			case '$':
1577 			case '>':
1578 				if (ip->ap < ip->argbuf + MAX_ARGSIZE)
1579 					*ip->ap++ = c;
1580 				return;
1581 			case BS:
1582 				/*
1583 				 * you wouldn't believe such perversion is
1584 				 * possible? it is.. BS is allowed in between
1585 				 * cursor sequences (at least), according to
1586 				 * vttest..
1587 				 */
1588 				if (--ip->curx < 0)
1589 					ip->curx = 0;
1590 				else
1591 					SUBR_CURSOR(ip, MOVE_CURSOR);
1592 				break;
1593 			case 'p':
1594 				*ip->ap = 0;
1595 				if (!strncmp(ip->argbuf, "61\"", 3))
1596 					ip->emul_level = EMUL_VT100;
1597 				else if (!strncmp(ip->argbuf, "63;1\"", 5)
1598 				    || !strncmp(ip->argbuf, "62;1\"", 5))
1599 					ip->emul_level = EMUL_VT300_7;
1600 				else
1601 					ip->emul_level = EMUL_VT300_8;
1602 				ip->escape = 0;
1603 				return;
1604 			case '?':
1605 				*ip->ap = 0;
1606 				ip->escape = '?';
1607 				ip->ap = ip->argbuf;
1608 				return;
1609 			case 'c':
1610 				*ip->ap = 0;
1611 				if (ip->argbuf[0] == '>') {
1612 					ite_sendstr("\033[>24;0;0;0c");
1613 				} else
1614 					switch (ite_zargnum(ip)) {
1615 					case 0:
1616 						/*
1617 						 * primary DA request, send
1618 						 * primary DA response
1619 						 */
1620 						if (ip->emul_level
1621 						    == EMUL_VT100)
1622 							ite_sendstr(
1623 							    "\033[?1;1c");
1624 						else
1625 							ite_sendstr(
1626 							    "\033[?63;1c");
1627 						break;
1628 					}
1629 				ip->escape = 0;
1630 				return;
1631 			case 'n':
1632 				switch (ite_zargnum(ip)) {
1633 				case 5:
1634 					/* no malfunction */
1635 					ite_sendstr("\033[0n");
1636 					break;
1637 				case 6:
1638 					/* cursor position report */
1639 					sprintf(ip->argbuf, "\033[%d;%dR",
1640 					    ip->cury + 1, ip->curx + 1);
1641 					ite_sendstr(ip->argbuf);
1642 					break;
1643 				}
1644 				ip->escape = 0;
1645 				return;
1646 			case 'x':
1647 				switch (ite_zargnum(ip)) {
1648 				case 0:
1649 					/* Fake some terminal parameters.  */
1650 					ite_sendstr("\033[2;1;1;112;112;1;0x");
1651 					break;
1652 				case 1:
1653 					ite_sendstr("\033[3;1;1;112;112;1;0x");
1654 					break;
1655 				}
1656 				ip->escape = 0;
1657 				return;
1658 			case 'g':
1659 				switch (ite_zargnum(ip)) {
1660 				case 0:
1661 					if (ip->curx < ip->cols)
1662 						ip->tabs[ip->curx] = 0;
1663 					break;
1664 				case 3:
1665 					for (n = 0; n < ip->cols; n++)
1666 						ip->tabs[n] = 0;
1667 					break;
1668 				}
1669 				ip->escape = 0;
1670 				return;
1671 			case 'h':
1672 			case 'l':
1673 				n = ite_zargnum(ip);
1674 				switch (n) {
1675 				case 4:
1676 					/* insert/replace mode */
1677 					ip->imode = (c == 'h');
1678 					break;
1679 				case 20:
1680 					ip->linefeed_newline = (c == 'h');
1681 					break;
1682 				}
1683 				ip->escape = 0;
1684 				return;
1685 			case 'M':
1686 				ite_dnline(ip, ite_argnum(ip));
1687 				ip->escape = 0;
1688 				return;
1689 			case 'L':
1690 				ite_inline(ip, ite_argnum(ip));
1691 				ip->escape = 0;
1692 				return;
1693 			case 'P':
1694 				ite_dnchar(ip, ite_argnum(ip));
1695 				ip->escape = 0;
1696 				return;
1697 			case '@':
1698 				ite_inchar(ip, ite_argnum(ip));
1699 				ip->escape = 0;
1700 				return;
1701 			case 'G':
1702 				/*
1703 				 * this one was *not* in my vt320 manual but in
1704 				 * a vt320 termcap entry.. who is right? It's
1705 				 * supposed to set the horizontal cursor
1706 				 * position.
1707 				 */
1708 				*ip->ap = 0;
1709 				x = atoi(ip->argbuf);
1710 				if (x)
1711 					x--;
1712 				ip->curx = min(x, ip->cols - 1);
1713 				ip->escape = 0;
1714 				SUBR_CURSOR(ip, MOVE_CURSOR);
1715 				clr_attr(ip, ATTR_INV);
1716 				return;
1717 			case 'd':
1718 				/*
1719 				 * same thing here, this one's for setting the
1720 				 * absolute vertical cursor position. Not
1721 				 * documented...
1722 				 */
1723 				*ip->ap = 0;
1724 				y = atoi(ip->argbuf);
1725 				if (y)
1726 					y--;
1727 				if (ip->inside_margins)
1728 					y += ip->top_margin;
1729 				ip->cury = min(y, ip->rows - 1);
1730 				ip->escape = 0;
1731 				snap_cury(ip);
1732 				SUBR_CURSOR(ip, MOVE_CURSOR);
1733 				clr_attr(ip, ATTR_INV);
1734 				return;
1735 			case 'H':
1736 			case 'f':
1737 				*ip->ap = 0;
1738 				y = atoi(ip->argbuf);
1739 				x = 0;
1740 				cp = strchr(ip->argbuf, ';');
1741 				if (cp)
1742 					x = atoi(cp + 1);
1743 				if (x)
1744 					x--;
1745 				if (y)
1746 					y--;
1747 				if (ip->inside_margins)
1748 					y += ip->top_margin;
1749 				ip->cury = min(y, ip->rows - 1);
1750 				ip->curx = min(x, ip->cols - 1);
1751 				ip->escape = 0;
1752 				snap_cury(ip);
1753 				SUBR_CURSOR(ip, MOVE_CURSOR);
1754 				clr_attr(ip, ATTR_INV);
1755 				return;
1756 			case 'A':
1757 				n = ite_argnum(ip);
1758 				n = ip->cury - (n ? n : 1);
1759 				if (n < 0)
1760 					n = 0;
1761 				if (ip->inside_margins)
1762 					n = max(ip->top_margin, n);
1763 				else if (n == ip->top_margin - 1)
1764 					/*
1765 					 * allow scrolling outside region, but
1766 					 * don't scroll out of active region
1767 					 * without explicit CUP
1768 					 */
1769 					n = ip->top_margin;
1770 				ip->cury = n;
1771 				ip->escape = 0;
1772 				SUBR_CURSOR(ip, MOVE_CURSOR);
1773 				clr_attr(ip, ATTR_INV);
1774 				return;
1775 			case 'B':
1776 				n = ite_argnum(ip);
1777 				n = ip->cury + (n ? n : 1);
1778 				n = min(ip->rows - 1, n);
1779 				if (ip->inside_margins)
1780 					n = min(ip->bottom_margin, n);
1781 				else if (n == ip->bottom_margin + 1)
1782 					/*
1783 					 * allow scrolling outside region, but
1784 					 * don't scroll out of active region
1785 					 * without explicit CUP
1786 					 */
1787 					n = ip->bottom_margin;
1788 				ip->cury = n;
1789 				ip->escape = 0;
1790 				SUBR_CURSOR(ip, MOVE_CURSOR);
1791 				clr_attr(ip, ATTR_INV);
1792 				return;
1793 			case 'C':
1794 				n = ite_argnum(ip);
1795 				n = n ? n : 1;
1796 				ip->curx = min(ip->curx + n, ip->cols - 1);
1797 				ip->escape = 0;
1798 				SUBR_CURSOR(ip, MOVE_CURSOR);
1799 				clr_attr(ip, ATTR_INV);
1800 				return;
1801 			case 'D':
1802 				n = ite_argnum(ip);
1803 				n = n ? n : 1;
1804 				n = ip->curx - n;
1805 				ip->curx = n >= 0 ? n : 0;
1806 				ip->escape = 0;
1807 				SUBR_CURSOR(ip, MOVE_CURSOR);
1808 				clr_attr(ip, ATTR_INV);
1809 				return;
1810 			case 'J':
1811 				*ip->ap = 0;
1812 				n = ite_zargnum(ip);
1813 				if (n == 0)
1814 					ite_clrtoeos(ip);
1815 				else if (n == 1)
1816 					ite_clrtobos(ip);
1817 				else if (n == 2)
1818 					ite_clrscreen(ip);
1819 				ip->escape = 0;
1820 				return;
1821 			case 'K':
1822 				n = ite_zargnum(ip);
1823 				if (n == 0)
1824 					ite_clrtoeol(ip);
1825 				else if (n == 1)
1826 					ite_clrtobol(ip);
1827 				else if (n == 2)
1828 					ite_clrline(ip);
1829 				ip->escape = 0;
1830 				return;
1831 			case 'X':
1832 				n = ite_argnum(ip) - 1;
1833 				n = min(n, ip->cols - 1 - ip->curx);
1834 				for (; n >= 0; n--) {
1835 					attrclr(ip, ip->cury, ip->curx + n, 1, 1);
1836 					SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1837 				}
1838 				ip->escape = 0;
1839 				return;
1840 			case '}':
1841 			case '`':
1842 				/* status line control */
1843 				ip->escape = 0;
1844 				return;
1845 			case 'r':
1846 				*ip->ap = 0;
1847 				x = atoi(ip->argbuf);
1848 				x = x ? x : 1;
1849 				y = ip->rows;
1850 				cp = strchr(ip->argbuf, ';');
1851 				if (cp) {
1852 					y = atoi(cp + 1);
1853 					y = y ? y : ip->rows;
1854 				}
1855 				if (y - x < 2) {
1856 					/*
1857 					 * if illegal scrolling region, reset
1858 					 * to defaults
1859 					 */
1860 					x = 1;
1861 					y = ip->rows;
1862 				}
1863 				x--;
1864 				y--;
1865 				ip->top_margin = min(x, ip->rows - 1);
1866 				ip->bottom_margin = min(y, ip->rows - 1);
1867 				if (ip->inside_margins) {
1868 					ip->cury = ip->top_margin;
1869 					ip->curx = 0;
1870 					SUBR_CURSOR(ip, MOVE_CURSOR);
1871 				}
1872 				ip->escape = 0;
1873 				return;
1874 			case 'm':
1875 				/* big attribute setter/resetter */
1876 				{ char *_cp;
1877 				*ip->ap = 0;
1878 				/* kludge to make CSIm work (== CSI0m) */
1879 				if (ip->ap == ip->argbuf)
1880 					ip->ap++;
1881 				for (_cp = ip->argbuf; _cp < ip->ap;) {
1882 					switch (*_cp) {
1883 					case 0:
1884 					case '0':
1885 						clr_attr(ip, ATTR_ALL);
1886 						_cp++;
1887 						break;
1888 
1889 					case '1':
1890 						set_attr(ip, ATTR_BOLD);
1891 						_cp++;
1892 						break;
1893 
1894 					case '2':
1895 						switch (_cp[1]) {
1896 						case '2':
1897 							clr_attr(ip, ATTR_BOLD);
1898 							_cp += 2;
1899 							break;
1900 
1901 						case '4':
1902 							clr_attr(ip, ATTR_UL);
1903 							_cp += 2;
1904 							break;
1905 
1906 						case '5':
1907 							clr_attr(ip, ATTR_BLINK);
1908 							_cp += 2;
1909 							break;
1910 
1911 						case '7':
1912 							clr_attr(ip, ATTR_INV);
1913 							_cp += 2;
1914 							break;
1915 
1916 						default:
1917 							_cp++;
1918 							break;
1919 						}
1920 						break;
1921 
1922 					case '4':
1923 						set_attr(ip, ATTR_UL);
1924 						_cp++;
1925 						break;
1926 
1927 					case '5':
1928 						set_attr(ip, ATTR_BLINK);
1929 						_cp++;
1930 						break;
1931 
1932 					case '7':
1933 						set_attr(ip, ATTR_INV);
1934 						_cp++;
1935 						break;
1936 
1937 					default:
1938 						_cp++;
1939 						break;
1940 					}
1941 				}
1942 				ip->escape = 0;
1943 				return; }
1944 			case 'u':
1945 				/* DECRQTSR */
1946 				ite_sendstr("\033P\033\\");
1947 				ip->escape = 0;
1948 				return;
1949 			default:
1950 				ip->escape = 0;
1951 				return;
1952 			}
1953 			break;
1954 		case '?':	/* CSI ? */
1955 			switch (c) {
1956 			case '0':
1957 			case '1':
1958 			case '2':
1959 			case '3':
1960 			case '4':
1961 			case '5':
1962 			case '6':
1963 			case '7':
1964 			case '8':
1965 			case '9':
1966 			case ';':
1967 			case '\"':
1968 			case '$':
1969 				/*
1970 				 * Don't fill the last character;
1971 				 * it's needed.
1972 				 * XXX yeah, where ??
1973 				 */
1974 				if (ip->ap < ip->argbuf + MAX_ARGSIZE - 1)
1975 					*ip->ap++ = c;
1976 				return;
1977 			case 'n':
1978 				*ip->ap = 0;
1979 				if (ip->ap == &ip->argbuf[2]) {
1980 					if (!strncmp(ip->argbuf, "15", 2))
1981 						/* printer status: no printer */
1982 						ite_sendstr("\033[13n");
1983 
1984 					else if (!strncmp(ip->argbuf, "25", 2))
1985 						/* udk status */
1986 						ite_sendstr("\033[20n");
1987 
1988 					else if (!strncmp(ip->argbuf, "26", 2))
1989 						/* keyboard dialect: US */
1990 						ite_sendstr("\033[27;1n");
1991 				}
1992 				ip->escape = 0;
1993 				return;
1994 			case 'h':
1995 			case 'l':
1996 				n = ite_zargnum(ip);
1997 				switch (n) {
1998 				case 1:
1999 					ip->cursor_appmode = (c == 'h');
2000 					break;
2001 				case 3:
2002 					/* 132/80 columns (132 == 'h') */
2003 					break;
2004 				case 4:	/* smooth scroll */
2005 					break;
2006 				case 5:
2007 					/*
2008 					 * light background (=='h') /dark
2009 					 * background(=='l')
2010 					 */
2011 					break;
2012 				case 6:	/* origin mode */
2013 					ip->inside_margins = (c == 'h');
2014 					ip->curx = 0;
2015 					ip->cury = ip->inside_margins ?
2016 					    ip->top_margin : 0;
2017 					SUBR_CURSOR(ip, MOVE_CURSOR);
2018 					break;
2019 				case 7:	/* auto wraparound */
2020 					ip->auto_wrap = (c == 'h');
2021 					break;
2022 				case 8:	/* keyboard repeat */
2023 					ip->key_repeat = (c == 'h');
2024 					break;
2025 				case 20:	/* newline mode */
2026 					ip->linefeed_newline = (c == 'h');
2027 					break;
2028 				case 25:	/* cursor on/off */
2029 					SUBR_CURSOR(ip, (c == 'h') ?
2030 					    DRAW_CURSOR : ERASE_CURSOR);
2031 					break;
2032 				}
2033 				ip->escape = 0;
2034 				return;
2035 			default:
2036 				ip->escape = 0;
2037 				return;
2038 			}
2039 			break;
2040 		default:
2041 			ip->escape = 0;
2042 			return;
2043 		}
2044 	}
2045 	switch (c) {
2046 	case VT:		/* VT is treated like LF */
2047 	case FF:		/* so is FF */
2048 	case LF:
2049 		/*
2050 		 * cr->crlf distinction is done here, on output, not on input!
2051 		 */
2052 		if (ip->linefeed_newline)
2053 			ite_crlf(ip);
2054 		else
2055 			ite_lf(ip);
2056 		break;
2057 	case CR:
2058 		ite_cr(ip);
2059 		break;
2060 	case BS:
2061 		if (--ip->curx < 0)
2062 			ip->curx = 0;
2063 		else
2064 			SUBR_CURSOR(ip, MOVE_CURSOR);
2065 		break;
2066 	case HT:
2067 		for (n = ip->curx + 1; n < ip->cols; n++) {
2068 			if (ip->tabs[n]) {
2069 				ip->curx = n;
2070 				SUBR_CURSOR(ip, MOVE_CURSOR);
2071 				break;
2072 			}
2073 		}
2074 		break;
2075 	case BEL:
2076 		if (kbd_tty && kbd_ite && kbd_ite->tp == kbd_tty
2077 #ifdef DRACO
2078 		    && !is_draco()
2079 #endif
2080 		    )
2081 			ite_bell();
2082 		break;
2083 	case SO:
2084 		ip->GL = ip->G1;
2085 		break;
2086 	case SI:
2087 		ip->GL = ip->G0;
2088 		break;
2089 	case ENQ:
2090 		/* send answer-back message !! */
2091 		break;
2092 	case CAN:
2093 		ip->escape = 0;	/* cancel any escape sequence in progress */
2094 		break;
2095 	case SUB:
2096 		ip->escape = 0;	/* dito, but see below */
2097 		/* should also display a reverse question mark!! */
2098 		break;
2099 	case ESC:
2100 		ip->escape = ESC;
2101 		break;
2102 	/*
2103 	 * now it gets weird.. 8bit control sequences..
2104 	 */
2105 	case IND:
2106 		/* index: move cursor down, scroll */
2107 		ite_lf(ip);
2108 		break;
2109 	case NEL:
2110 		/* next line. next line, first pos. */
2111 		ite_crlf(ip);
2112 		break;
2113 	case HTS:
2114 		/* set horizontal tab */
2115 		if (ip->curx < ip->cols)
2116 			ip->tabs[ip->curx] = 1;
2117 		break;
2118 	case RI:
2119 		/* reverse index */
2120 		ite_rlf(ip);
2121 		break;
2122 	case SS2:
2123 		/* go into G2 for one character */
2124 		/* not yet supported */
2125 		break;
2126 	case SS3:
2127 		/* go into G3 for one character */
2128 		break;
2129 	case DCS:
2130 		/* device control string introducer */
2131 		ip->escape = DCS;
2132 		ip->ap = ip->argbuf;
2133 		break;
2134 	case CSI:
2135 		/* control sequence introducer */
2136 		ip->escape = CSI;
2137 		ip->ap = ip->argbuf;
2138 		break;
2139 	case ST:
2140 		/* string terminator */
2141 		/* ignore, if not used as terminator */
2142 		break;
2143 	case OSC:
2144 		/*
2145 		 * introduces OS command. Ignore everything
2146 		 * upto ST
2147 		 */
2148 		ip->escape = OSC;
2149 		break;
2150 	case PM:
2151 		/* privacy message, ignore everything upto ST */
2152 		ip->escape = PM;
2153 		break;
2154 	case APC:
2155 		/*
2156 		 * application program command, ignore * everything upto ST
2157 		 */
2158 		ip->escape = APC;
2159 		break;
2160 	default:
2161 		if ((c & 0x7f) < ' ' || c == DEL)
2162 			break;
2163 		if (ip->imode)
2164 			ite_inchar(ip, 1);
2165 		iteprecheckwrap(ip);
2166 #ifdef DO_WEIRD_ATTRIBUTES
2167 		if ((ip->attribute & ATTR_INV) || attrtest(ip, ATTR_INV)) {
2168 			attrset(ip, ATTR_INV);
2169 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_INV);
2170 		} else
2171 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_NOR);
2172 #else
2173 		SUBR_PUTC(ip, c, ip->cury, ip->curx, ip->attribute);
2174 #endif
2175 		SUBR_CURSOR(ip, DRAW_CURSOR);
2176 		itecheckwrap(ip);
2177 		break;
2178 	}
2179 }
2180 
2181