pcvt_out.c

freebsd v4.4内核源码

					case '~': /* Lock Shift G1 -> GR */
						svsp->GR = &svsp->G1;
						svsp->state = STATE_INIT;
						break;

					default:
						svsp->state = STATE_INIT;
						break;
				}
				break;

			case STATE_BLANK:        /* ESC space [FG], which are */
                                svsp->state = STATE_INIT; /* currently ignored*/
                        	break;

			case STATE_HASH:
				switch(ch)
				{
					case '3': /* double height top half */
					case '4': /*double height bottom half*/
					case '5': /*single width sngle height*/
					case '6': /*double width sngle height*/
						svsp->state = STATE_INIT;
						break;

					case '8': /* fill sceen with 'E's */
						vt_aln(svsp);
						svsp->state = STATE_INIT;
						break;

					default: /* anything else */
						svsp->state = STATE_INIT;
						break;
				}
				break;

			case STATE_BROPN:	/* designate G0 */
			case STATE_BRCLO:	/* designate G1 */
			case STATE_STAR:	/* designate G2 */
			case STATE_PLUS:	/* designate G3 */
			case STATE_MINUS:	/* designate G1 (96) */
			case STATE_DOT:		/* designate G2 (96) */
			case STATE_SLASH:	/* designate G3 (96) */
				svsp->which[svsp->whichi++] = ch;
				if(ch >= 0x20 && ch <= 0x2f
				   && svsp->whichi <= 2)
					break;
				else if(ch >=0x30 && ch <= 0x7e)
				{
					svsp->which[svsp->whichi] = '\0';
					vt_designate(svsp);
				}
				svsp->whichi = 0;
				svsp->state = STATE_INIT;
				break;

			case STATE_CSIQM:	/* DEC private modes */
				switch(ch)
				{
					case '0':
					case '1':
					case '2':
					case '3':
					case '4':
					case '5':
					case '6':
					case '7':
					case '8':
					case '9':	/* parameters */
						svsp->parms[svsp->parmi] *= 10;
						svsp->parms[svsp->parmi] +=
							(ch -'0');
						break;

					case ';':	/* next parameter */
						svsp->parmi =
						 (svsp->parmi+1 < MAXPARMS) ?
						 svsp->parmi+1 : svsp->parmi;
						break;

					case 'h':	/* set mode */
						vt_set_dec_priv_qm(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'l':	/* reset mode */
						vt_reset_dec_priv_qm(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'n':	/* Reports */
						vt_dsr(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'K': /* selective erase in line */
						vt_sel(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'J':/*selective erase in display*/
						vt_sed(svsp);
						svsp->state = STATE_INIT;
						break;

					default:
						svsp->state = STATE_INIT;
						break;

				}
				break;

			case STATE_CSI:
				switch(ch)
				{
					case '0':
					case '1':
					case '2':
					case '3':
					case '4':
					case '5':
					case '6':
					case '7':
					case '8':
					case '9':	/* parameters */
						svsp->parms[svsp->parmi] *= 10;
						svsp->parms[svsp->parmi] +=
							(ch -'0');
						break;

					case ';':	/* next parameter */
						svsp->parmi =
						 (svsp->parmi+1 < MAXPARMS) ?
						 svsp->parmi+1 : svsp->parmi;
						break;

					case '?':	/* ESC [ ? family */
						svsp->state = STATE_CSIQM;
						break;

					case '@':	/* insert char */
						vt_ic(svsp);
						svsp->state = STATE_INIT;
						break;

					case '"':  /* select char attribute */
						svsp->state = STATE_SCA;
						break;

					case '\'': /* for DECELR/DECSLE */
/* XXX */					/* another state needed -hm */
						break;

					case '!': /* soft terminal reset */
						svsp->state = STATE_STR;
						break;

					case 'A':	/* cursor up */
						vt_cuu(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'B':	/* cursor down */
						vt_cud(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'C':	/* cursor forward */
						vt_cuf(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'D':	/* cursor backward */
						vt_cub(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'H': /* direct cursor addressing*/
						vt_curadr(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'J':	/* erase screen */
						vt_clreos(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'K':	/* erase line */
						vt_clreol(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'L':	/* insert line */
						vt_il(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'M':	/* delete line */
						vt_dl(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'P':	/* delete character */
						vt_dch(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'S':	/* scroll up */
						vt_su(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'T':	/* scroll down */
						vt_sd(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'X':	/* erase character */
						vt_ech(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'c':	/* device attributes */
						vt_da(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'f': /* direct cursor addressing*/
						vt_curadr(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'g':	/* clear tabs */
						vt_clrtab(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'h':	/* set mode(s) */
						vt_set_ansi(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'i':	/* media copy */
						vt_mc(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'l':	/* reset mode(s) */
						vt_reset_ansi(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'm': /* select graphic rendition*/
						vt_sgr(svsp);
						if (!kernel)
							attrib = svsp->c_attr;
						svsp->state = STATE_INIT;
						break;

					case 'n':	/* reports */
						vt_dsr(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'r': /* set scrolling region */
						vt_stbm(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'x': /*request/report parameters*/
						vt_reqtparm(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'y': /* invoke selftest(s) */
						vt_tst(svsp);
						svsp->state = STATE_INIT;
						break;

					case 'z': /* DECELR, ignored */
					case '{': /* DECSLE, ignored */
						svsp->state = STATE_INIT;
						break;

					default:
						svsp->state = STATE_INIT;
						break;
				}
				break;

			case STATE_AMPSND:
				hp_entry(ch,svsp);
				break;

			case STATE_DCS:
				vt_dcsentry(ch,svsp);
				break;

			case STATE_SCA:
				switch(ch)
				{
					case 'q':
						vt_sca(svsp);
						svsp->state = STATE_INIT;
						break;

					default:
						svsp->state = STATE_INIT;
						break;
				}
				break;

			case STATE_STR:
				switch(ch)
				{
					case 'p': /* soft terminal reset */
						vt_str(svsp);
						if (!kernel)
							attrib = svsp->c_attr;
						svsp->state = STATE_INIT;
						break;

					default:
						svsp->state = STATE_INIT;
						break;
				}
				break;

			default:		/* failsafe */
				svsp->state = STATE_INIT;
				break;

		}
	}

	svsp->row = svsp->cur_offset / svsp->maxcol;	/* current row update */

	/* take care of last character on line behaviour */

	if(svsp->lastchar && (svsp->col < ((svsp->maxcol)-1)))
		svsp->lastchar = 0;
    }

    if(svsp == vsp)			/* on current displayed page ?	*/
	cursor_pos_valid = 1;		/* position is valid now */
}

/*---------------------------------------------------------------------------*
 *	this is the absolute cold initialization of the emulator
 *---------------------------------------------------------------------------*/
static void
vt_coldinit(void)
{
	u_short volatile *cp;
	u_short was;
	int nscr, charset;
	int equipment;
	u_short *SaveCrtat;
	struct video_state *svsp;

	Crtat = (u_short *)MONO_BUF;	/* XXX assume static relocation works */
	SaveCrtat = Crtat;
	cp = Crtat + (CGA_BUF-MONO_BUF)/CHR;

	do_initialization = 0;		/* reset init necessary flag */

	/* get the equipment byte from the RTC chip */

	equipment = ((rtcin(RTC_EQUIPMENT)) >> 4) & 0x03;

	switch(equipment)
	{
		case EQ_EGAVGA:

			/* set memory start to CGA == B8000 */

			Crtat = Crtat + (CGA_BUF-MONO_BUF)/CHR;

			/* find out, what monitor is connected */

			was = *cp;
			*cp = (u_short) 0xA55A;
			if (*cp != 0xA55A)
			{
				addr_6845 = MONO_BASE;
				color = 0;
			}
			else
			{
				*cp = was;
				addr_6845 = CGA_BASE;
				color = 1;
			}

			if(vga_test())		/* EGA or VGA ? */
			{
				adaptor_type = VGA_ADAPTOR;
				totalfonts = 8;

				if(color == 0)
				{
					mda2egaorvga();
					Crtat = SaveCrtat; /* mono start */
				}

				/* find out which chipset we are running on */
				vga_type = vga_chipset();
			}
			else
			{
				adaptor_type = EGA_ADAPTOR;
				totalfonts = 4;

				if(color == 0)
				{
					mda2egaorvga();
					Crtat = SaveCrtat; /* mono start */
				}
			}

			/* decouple ega/vga charsets and intensity */
			set_2ndcharset();

			break;

		case EQ_40COLOR:	/* XXX should panic in 40 col mode ! */
		case EQ_80COLOR:
			Crtat = Crtat + (CGA_BUF-MONO_BUF)/CHR;
			addr_6845 = CGA_BASE;
			adaptor_type = CGA_ADAPTOR;
			color = 1;
			totalfonts = 0;
			break;

		case EQ_80MONO:
			addr_6845 = MONO_BASE;
			adaptor_type = MDA_ADAPTOR;
			color = 0;
			totalfonts = 0;
			break;
	}

	/* establish default colors */

	if(color)
	{
		kern_attr = (COLOR_KERNEL_FG | COLOR_KERNEL_BG) << 8;
		user_attr = sgr_tab_color[0] << 8;
	}
	else
	{
		kern_attr = (MONO_KERNEL_FG | MONO_KERNEL_BG) << 8;
		if(adaptor_type == MDA_ADAPTOR)
			user_attr = sgr_tab_imono[0] << 8;
		else
			user_attr = sgr_tab_mono[0] << 8;
	}

	totalscreens = 1;	/* for now until malloced */

	for(nscr = 0, svsp = vs; nscr < PCVT_NSCREENS; nscr++, svsp++)
	{
		svsp->Crtat = Crtat;		/* all same until malloc'ed */
		svsp->Memory = Crtat;		/* until malloc'ed */
		svsp->cur_offset = 0;		/* cursor offset */
		svsp->c_attr = user_attr;	/* non-kernel attributes */
		svsp->bell_on = 1;		/* enable bell */
		svsp->sevenbit = 0;		/* set to 8-bit path */
		svsp->dis_fnc = 0;		/* disable display functions */
		svsp->transparent = 0;		/* disable internal tranparency */
		svsp->lastchar = 0;		/* VTxxx behaviour of last */
						/*            char on line */
		svsp->report_chars = NULL;	/* VTxxx reports init */
		svsp->report_count = 0;		/* VTxxx reports init */
		svsp->state = STATE_INIT;	/* main state machine init */
		svsp->m_awm = 1;		/* enable auto wrap mode */
		svsp->m_om = 0;			/* origin mode = absolute */
		svsp->sc_flag = 0;		/* init saved cursor flag */
		svsp->which_fkl = SYS_FKL;	/* display system fkey-labels */
		svsp->labels_on = 1;		/* if in HP-mode, display */
						/*            fkey-labels */
		svsp->attribute = 0;		/* HP mode init */
		svsp->key = 0;			/* HP mode init */
		svsp->l_len = 0;		/* HP mode init */
		svsp->s_len = 0;		/* HP mode init */
		svsp->m_len = 0;		/* HP mode init */
		svsp->i = 0;			/* HP mode init */
		svsp->vt_pure_mode = M_PUREVT;	/* initial mode: pure VT220*/
		svsp->vga_charset = CH_SET0;	/* use bios default charset */

#if PCVT_24LINESDEF				/* true compatibility */
		svsp->screen_rows = 24;		/* default 24 rows on screen */
#else						/* full screen */
		svsp->screen_rows = 25;		/* default 25 rows on screen */
#endif /* PCVT_24LINESDEF */

		svsp->screen_rowsize = 25;	/* default 25 rows on screen */
		svsp->scrr_beg = 0;		/* scrolling region begin row*/
		svsp->scrr_len = svsp->screen_rows; /* scrolling region length*/
		svsp->scrr_end = svsp->scrr_len - 1;/* scrolling region end */

		if(nscr == 0)
		{
			if(adaptor_type == VGA_ADAPTOR)
			{
				/* only VGA can read cursor shape registers ! */
				/* Preserve initial cursor shape */
				outb(addr_6845,CRTC_CURSTART);
				svsp->cursor_start = inb(addr_6845+1);
				outb(addr_6845,CRTC_CUREND);
				svsp->cursor_end = inb(addr_6845+1);
			}
			else
			{
				/* MDA,HGC,CGA,EGA registers are write-only */
				svsp->cursor_start = 0;
				svsp->cursor_end = 15;
			}
		}
		else
		{
			svsp->cursor_start = vs[0].cursor_start;
			svsp->cursor_end = vs[0].cursor_end;
		}

#ifdef FAT_CURSOR
		svsp->cursor_start = 0;
		svsp->cursor_end = 15;		/* cursor lower scanline */
#endif

		svsp->cursor_on = 1;		/* cursor is on */
		svsp->ckm = 1;			/* normal cursor key mode */
		svsp->irm = 0;			/* replace mode */
		svsp->lnm = 0;			/* CR only */
		svsp->selchar = 0;		/* selective attribute off */
		svsp->G0 = csd_ascii;		/* G0 = ascii	*/
		svsp->G1 = csd_ascii;		/* G1 = ascii	*/
		svsp->G2 = csd_supplemental;	/* G2 = supplemental */
		svsp->G3 = csd_supplemental;	/* G3 = supplemental */
		svsp->GL = &svsp->G0;		/* GL = G0 */
		svsp->GR = &svsp->G2;		/* GR = G2 */
		svsp->whichi = 0;		/* char set designate init */
		svsp->which[0] = '\0';		/* char set designate init */
		svsp->hp_state = SHP_INIT;	/* init HP mode state machine*/
		svsp->dcs_state = DCS_INIT;	/* init DCS mode state machine*/