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freebsd-dev/sys/i386/isa/pcvt/pcvt_vtf.c
Joerg Wunsch e843ad34c1 Fix a bogon in pcvt that caused a characterset designation to not take 
effect immediately, but required a following (normally redundant) G0
into GL mapping.  This adds one layer of indirection (thus might make it
slower), but fixes the broken box character drawing in pcvt.

Hellmuth and Bruce are unfortunately too busy too review this right now,
but i wanna have it in 2.2 since it has often been asked in the past.
1997-03-07 08:56:00 +00:00

2188 lines
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/*
* Copyright (c) 1992, 1995 Hellmuth Michaelis and Joerg Wunsch.
*
* Copyright (c) 1992, 1993 Brian Dunford-Shore.
*
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz and Don Ahn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Hellmuth Michaelis,
* Brian Dunford-Shore and Joerg Wunsch.
* 4. The name authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* @(#)pcvt_vtf.c, 3.20, Last Edit-Date: [Wed Apr 5 18:08:50 1995]
*/
/*---------------------------------------------------------------------------*
*
* pcvt_vtf.c VT220 Terminal Emulator Functions
* -------------------------------------------------
* -hm ------------ Release 3.00 --------------
* -hm integrating NetBSD-current patches
* -hm integrating patch from Thomas Gellekum
* -hm fixed bug fkey labels not properly (re)set after ris
* -hm Michael Havemester fixed NOFASTSCROLL define bug
* -hm set caps/scroll/num_lock in vt_str() and made led_update()
* -hm applying patch from Joerg fixing Crtat bug
* -hm fixing NOFASTSCROLL operation for MDA/Hercules
* -jw/hm fixing bug in roll_up() and roll_down()
* -hm fastscroll/Crtat bugfix from Lon Willett
* -hm patch for non-XSERVER/UCONSOLE compiles from Rafal Boni
* -hm bugfix: PCVT_USL_COMPAT renamed to PCVT_USL_VT_COMPAT ...
*
*---------------------------------------------------------------------------*/
#include "vt.h"
#if NVT > 0
#define PCVT_INCLUDE_VT_SELATTR /* get inline function from pcvt_hdr.h */
#include <i386/isa/pcvt/pcvt_hdr.h> /* global include */
#include <i386/isa/pcvt/pcvt_tbl.h> /* character set conversion tables */
static void clear_dld ( struct video_state *svsp );
static void init_dld ( struct video_state *svsp );
static void init_udk ( struct video_state *svsp );
static void respond ( struct video_state *svsp );
static void roll_down ( struct video_state *svsp, int n );
static void selective_erase ( struct video_state *svsp, u_short *pcrtat,
int length );
static void swcsp ( struct video_state *svsp, u_short *ctp );
/*---------------------------------------------------------------------------*
* DECSTBM - set top and bottom margins
*---------------------------------------------------------------------------*/
void
vt_stbm(struct video_state *svsp)
{
/* both 0 => scrolling region = entire screen */
if((svsp->parms[0] == 0) && (svsp->parms[1] == 0))
{
svsp->cur_offset = 0;
svsp->scrr_beg = 0;
svsp->scrr_len = svsp->screen_rows;
svsp->scrr_end = svsp->scrr_len - 1;
svsp->col = 0;
return;
}
if(svsp->parms[1] <= svsp->parms[0])
return;
/* range parm 1 */
if(svsp->parms[0] < 1)
svsp->parms[0] = 1;
else if(svsp->parms[0] > svsp->screen_rows-1)
svsp->parms[0] = svsp->screen_rows-1;
/* range parm 2 */
if(svsp->parms[1] < 2)
svsp->parms[1] = 2;
else if(svsp->parms[1] > svsp->screen_rows)
svsp->parms[1] = svsp->screen_rows;
svsp->scrr_beg = svsp->parms[0]-1; /* begin of scrolling region */
svsp->scrr_len = svsp->parms[1] - svsp->parms[0] + 1; /* no of lines */
svsp->scrr_end = svsp->parms[1]-1;
/* cursor to first pos */
if(svsp->m_om)
svsp->cur_offset = svsp->scrr_beg * svsp->maxcol;
else
svsp->cur_offset = 0;
svsp->col = 0;
}
/*---------------------------------------------------------------------------*
* SGR - set graphic rendition
*---------------------------------------------------------------------------*/
void
vt_sgr(struct video_state *svsp)
{
register int i = 0;
u_short setcolor = 0;
char colortouched = 0;
do
{
switch(svsp->parms[i++])
{
case 0: /* reset to normal attributes */
svsp->vtsgr = VT_NORMAL;
break;
case 1: /* bold */
svsp->vtsgr |= VT_BOLD;
break;
case 4: /* underline */
svsp->vtsgr |= VT_UNDER;
break;
case 5: /* blinking */
svsp->vtsgr |= VT_BLINK;
break;
case 7: /* reverse */
svsp->vtsgr |= VT_INVERSE;
break;
case 22: /* not bold */
svsp->vtsgr &= ~VT_BOLD;
break;
case 24: /* not underlined */
svsp->vtsgr &= ~VT_UNDER;
break;
case 25: /* not blinking */
svsp->vtsgr &= ~VT_BLINK;
break;
case 27: /* not reverse */
svsp->vtsgr &= ~VT_INVERSE;
break;
case 30: /* foreground colors */
case 31:
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
if(color)
{
colortouched = 1;
setcolor |= ((fgansitopc[(svsp->parms[i-1]-30) & 7]) << 8);
}
break;
case 40: /* background colors */
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
if(color)
{
colortouched = 1;
setcolor |= ((bgansitopc[(svsp->parms[i-1]-40) & 7]) << 8);
}
break;
}
}
while(i <= svsp->parmi);
if(color)
{
if(colortouched)
svsp->c_attr = setcolor;
else
svsp->c_attr = ((sgr_tab_color[svsp->vtsgr]) << 8);
}
else
{
if(adaptor_type == MDA_ADAPTOR)
svsp->c_attr = ((sgr_tab_imono[svsp->vtsgr]) << 8);
else
svsp->c_attr = ((sgr_tab_mono[svsp->vtsgr]) << 8);
}
}
/*---------------------------------------------------------------------------*
* CUU - cursor up
*---------------------------------------------------------------------------*/
void
vt_cuu(struct video_state *svsp)
{
register int p = svsp->parms[0];
if (p <= 0) /* parameter min */
p = 1;
p = min(p, svsp->row - svsp->scrr_beg);
if (p <= 0)
return;
svsp->cur_offset -= (svsp->maxcol * p);
}
/*---------------------------------------------------------------------------*
* CUD - cursor down
*---------------------------------------------------------------------------*/
void
vt_cud(struct video_state *svsp)
{
register int p = svsp->parms[0];
if (p <= 0)
p = 1;
p = min(p, svsp->scrr_end - svsp->row);
if (p <= 0)
return;
svsp->cur_offset += (svsp->maxcol * p);
}
/*---------------------------------------------------------------------------*
* CUF - cursor forward
*---------------------------------------------------------------------------*/
void
vt_cuf(struct video_state *svsp)
{
register int p = svsp->parms[0];
if(svsp->col == ((svsp->maxcol)-1)) /* already at right margin */
return;
if(p <= 0) /* parameter min = 1 */
p = 1;
else if(p > ((svsp->maxcol)-1)) /* parameter max = 79 */
p = ((svsp->maxcol)-1);
if((svsp->col + p) > ((svsp->maxcol)-1))/* not more than right margin */
p = ((svsp->maxcol)-1) - svsp->col;
svsp->cur_offset += p;
svsp->col += p;
}
/*---------------------------------------------------------------------------*
* CUB - cursor backward
*---------------------------------------------------------------------------*/
void
vt_cub(struct video_state *svsp)
{
register int p = svsp->parms[0];
if(svsp->col == 0) /* already at left margin ? */
return;
if(p <= 0) /* parameter min = 1 */
p = 1;
else if(p > ((svsp->maxcol)-1)) /* parameter max = 79 */
p = ((svsp->maxcol)-1);
if((svsp->col - p) <= 0) /* not more than left margin */
p = svsp->col;
svsp->cur_offset -= p;
svsp->col -= p;
}
/*---------------------------------------------------------------------------*
* ED - erase in display
*---------------------------------------------------------------------------*/
void
vt_clreos(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0:
fillw(user_attr | ' ', svsp->Crtat + svsp->cur_offset,
svsp->Crtat +
(svsp->maxcol * svsp->screen_rows) -
(svsp->Crtat + svsp->cur_offset));
break;
case 1:
fillw(user_attr | ' ', svsp->Crtat,
svsp->Crtat + svsp->cur_offset -
svsp->Crtat + 1 );
break;
case 2:
fillw(user_attr | ' ', svsp->Crtat,
svsp->maxcol * svsp->screen_rows);
break;
}
}
/*---------------------------------------------------------------------------*
* EL - erase in line
*---------------------------------------------------------------------------*/
void
vt_clreol(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0:
fillw(user_attr | ' ',
svsp->Crtat + svsp->cur_offset,
svsp->maxcol-svsp->col);
break;
case 1:
fillw(user_attr | ' ',
svsp->Crtat + svsp->cur_offset - svsp->col,
svsp->col + 1);
break;
case 2:
fillw(user_attr | ' ',
svsp->Crtat + svsp->cur_offset - svsp->col,
svsp->maxcol);
break;
}
}
/*---------------------------------------------------------------------------*
* CUP - cursor position / HVP - horizontal & vertical position
*---------------------------------------------------------------------------*/
void
vt_curadr(struct video_state *svsp)
{
if(svsp->m_om) /* relative to scrolling region */
{
if((svsp->parms[0] == 0) && (svsp->parms[1] == 0))
{
svsp->cur_offset = svsp->scrr_beg * svsp->maxcol;
svsp->col = 0;
svsp->abs_write = 0;
return;
}
if(svsp->parms[0] <= 0)
svsp->parms[0] = 1;
else if(svsp->parms[0] > svsp->scrr_len)
svsp->parms[0] = svsp->scrr_len;
if(svsp->parms[1] <= 0 )
svsp->parms[1] = 1;
if(svsp->parms[1] > svsp->maxcol)
svsp->parms[1] = svsp->maxcol;
svsp->cur_offset = (svsp->scrr_beg * svsp->maxcol) +
((svsp->parms[0] - 1) * svsp->maxcol) +
svsp->parms[1] - 1;
svsp->col = svsp->parms[1] - 1;
svsp->abs_write = 0;
}
else /* relative to screen start */
{
if((svsp->parms[0] == 0) && (svsp->parms[1] == 0))
{
svsp->cur_offset = 0;
svsp->col = 0;
svsp->abs_write = 0;
return;
}
if(svsp->parms[0] <= 0)
svsp->parms[0] = 1;
else if(svsp->parms[0] > svsp->screen_rows)
svsp->parms[0] = svsp->screen_rows;
if(svsp->parms[1] <= 0 )
svsp->parms[1] = 1;
if(svsp->parms[1] > svsp->maxcol) /* col */
svsp->parms[1] = svsp->maxcol;
svsp->cur_offset = (((svsp->parms[0]-1)*svsp->maxcol) +
(svsp->parms[1]-1));
svsp->col = svsp->parms[1]-1;
if (svsp->cur_offset >=
((svsp->scrr_beg + svsp->scrr_len + 1) * svsp->maxcol))
svsp->abs_write = 1;
else
svsp->abs_write = 0;
}
}
/*---------------------------------------------------------------------------*
* RIS - reset to initial state (hard emulator runtime reset)
*---------------------------------------------------------------------------*/
void
vt_ris(struct video_state *svsp)
{
fillw(user_attr | ' ', svsp->Crtat, svsp->maxcol * svsp->screen_rows);
svsp->cur_offset = 0; /* cursor upper left corner */
svsp->col = 0;
svsp->row = 0;
svsp->lnm = 0; /* CR only */
clear_dld(svsp); /* clear download charset */
vt_clearudk(svsp); /* clear user defined keys */
svsp->selchar = 0; /* selective attribute off */
vt_str(svsp); /* and soft terminal reset */
}
/*---------------------------------------------------------------------------*
* DECSTR - soft terminal reset (SOFT emulator runtime reset)
*---------------------------------------------------------------------------*/
void
vt_str(struct video_state *svsp)
{
int i;
clr_parms(svsp); /* escape parameter init */
svsp->state = STATE_INIT; /* initial state */
svsp->dis_fnc = 0; /* display functions reset */
svsp->sc_flag = 0; /* save cursor position */
svsp->transparent = 0; /* enable control code processing */
for(i = 0; i < MAXTAB; i++) /* setup tabstops */
{
if(!(i % 8))
svsp->tab_stops[i] = 1;
else
svsp->tab_stops[i] = 0;
}
svsp->irm = 0; /* replace mode */
svsp->m_om = 0; /* origin mode */
svsp->m_awm = 1; /* auto wrap mode */
#if PCVT_INHIBIT_NUMLOCK
svsp->num_lock = 0; /* keypad application mode */
#else
svsp->num_lock = 1; /* keypad numeric mode */
#endif
svsp->scroll_lock = 0; /* reset keyboard modes */
svsp->caps_lock = 0;
svsp->ckm = 1; /* cursor key mode = "normal" ... */
svsp->scrr_beg = 0; /* start of scrolling region */
svsp->scrr_len = svsp->screen_rows; /* no. of lines in scrolling region */
svsp->abs_write = 0; /* scrr is complete screen */
svsp->scrr_end = svsp->scrr_len - 1;
if(adaptor_type == EGA_ADAPTOR || adaptor_type == VGA_ADAPTOR)
{
svsp->G0 = cse_ascii; /* G0 = ascii */
svsp->G1 = cse_ascii; /* G1 = ascii */
svsp->G2 = cse_supplemental; /* G2 = supplemental */
svsp->G3 = cse_supplemental; /* G3 = supplemental */
svsp->GL = &svsp->G0; /* GL = G0 */
svsp->GR = &svsp->G2; /* GR = G2 */
}
else
{
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->vtsgr = VT_NORMAL; /* no attributes */
svsp->c_attr = user_attr; /* reset sgr to normal */
svsp->selchar = 0; /* selective attribute off */
vt_initsel(svsp);
init_ufkl(svsp); /* init user fkey labels */
init_sfkl(svsp); /* init system fkey labels */
update_led(); /* update keyboard LED's */
}
/*---------------------------------------------------------------------------*
* RI - reverse index, move cursor up
*---------------------------------------------------------------------------*/
void
vt_ri(struct video_state *svsp)
{
if(svsp->cur_offset >= ((svsp->scrr_beg * svsp->maxcol) + svsp->maxcol))
svsp->cur_offset -= svsp->maxcol;
else
roll_down(svsp, 1);
}
/*---------------------------------------------------------------------------*
* IND - index, move cursor down
*---------------------------------------------------------------------------*/
void
vt_ind(struct video_state *svsp)
{
if(svsp->cur_offset < (svsp->scrr_end * svsp->maxcol))
svsp->cur_offset += svsp->maxcol;
else
roll_up(svsp, 1);
}
/*---------------------------------------------------------------------------*
* NEL - next line, first pos of next line
*---------------------------------------------------------------------------*/
void
vt_nel(struct video_state *svsp)
{
if(svsp->cur_offset < (svsp->scrr_end * svsp->maxcol))
{
svsp->cur_offset += (svsp->maxcol-svsp->col);
svsp->col = 0;
}
else
{
roll_up(svsp, 1);
svsp->cur_offset -= svsp->col;
svsp->col = 0;
}
}
/*---------------------------------------------------------------------------*
* set dec private modes, esc [ ? x h
*---------------------------------------------------------------------------*/
void
vt_set_dec_priv_qm(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0: /* error, ignored */
case 1: /* CKM - cursor key mode */
svsp->ckm = 1;
break;
case 2: /* ANM - ansi/vt52 mode */
break;
case 3: /* COLM - column mode */
vt_col(svsp, SCR_COL132);
break;
case 4: /* SCLM - scrolling mode */
case 5: /* SCNM - screen mode */
break;
case 6: /* OM - origin mode */
svsp->m_om = 1;
break;
case 7: /* AWM - auto wrap mode */
svsp->m_awm = 1;
swritefkl(7,(u_char *)"AUTOWRAPENABLE *",svsp);
break;
case 8: /* ARM - auto repeat mode */
kbrepflag = 1;
break;
case 9: /* INLM - interlace mode */
case 10: /* EDM - edit mode */
case 11: /* LTM - line transmit mode */
case 12: /* */
case 13: /* SCFDM - space compression / field delimiting */
case 14: /* TEM - transmit execution mode */
case 15: /* */
case 16: /* EKEM - edit key execution mode */
break;
case 25: /* TCEM - text cursor enable mode */
if(vsp == svsp)
sw_cursor(1); /* cursor on */
svsp->cursor_on = 1;
break;
case 42: /* NRCM - 7bit NRC characters */
break;
}
}
/*---------------------------------------------------------------------------*
* reset dec private modes, esc [ ? x l
*---------------------------------------------------------------------------*/
void
vt_reset_dec_priv_qm(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0: /* error, ignored */
case 1: /* CKM - cursor key mode */
svsp->ckm = 0;
break;
case 2: /* ANM - ansi/vt52 mode */
break;
case 3: /* COLM - column mode */
vt_col(svsp, SCR_COL80);
break;
case 4: /* SCLM - scrolling mode */
case 5: /* SCNM - screen mode */
break;
case 6: /* OM - origin mode */
svsp->m_om = 0;
break;
case 7: /* AWM - auto wrap mode */
svsp->m_awm = 0;
swritefkl(7,(u_char *)"AUTOWRAPENABLE ",svsp);
break;
case 8: /* ARM - auto repeat mode */
kbrepflag = 0;
break;
case 9: /* INLM - interlace mode */
case 10: /* EDM - edit mode */
case 11: /* LTM - line transmit mode */
case 12: /* */
case 13: /* SCFDM - space compression / field delimiting */
case 14: /* TEM - transmit execution mode */
case 15: /* */
case 16: /* EKEM - edit key execution mode */
break;
case 25: /* TCEM - text cursor enable mode */
if(vsp == svsp)
sw_cursor(0); /* cursor off */
svsp->cursor_on = 0;
break;
case 42: /* NRCM - 7bit NRC characters */
break;
}
}
/*---------------------------------------------------------------------------*
* set ansi modes, esc [ x
*---------------------------------------------------------------------------*/
void
vt_set_ansi(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0: /* error, ignored */
case 1: /* GATM - guarded area transfer mode */
case 2: /* KAM - keyboard action mode */
case 3: /* CRM - Control Representation mode */
break;
case 4: /* IRM - insert replacement mode */
svsp->irm = 1; /* Insert mode */
break;
case 5: /* SRTM - status report transfer mode */
case 6: /* ERM - erasue mode */
case 7: /* VEM - vertical editing mode */
case 10: /* HEM - horizontal editing mode */
case 11: /* PUM - position unit mode */
case 12: /* SRM - send-receive mode */
case 13: /* FEAM - format effector action mode */
case 14: /* FETM - format effector transfer mode */
case 15: /* MATM - multiple area transfer mode */
case 16: /* TTM - transfer termination */
case 17: /* SATM - selected area transfer mode */
case 18: /* TSM - tabulation stop mode */
case 19: /* EBM - editing boundary mode */
break;
case 20: /* LNM - line feed / newline mode */
svsp->lnm = 1;
break;
}
}
/*---------------------------------------------------------------------------*
* reset ansi modes, esc [ x
*---------------------------------------------------------------------------*/
void
vt_reset_ansi(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0: /* error, ignored */
case 1: /* GATM - guarded area transfer mode */
case 2: /* KAM - keyboard action mode */
case 3: /* CRM - Control Representation mode */
break;
case 4: /* IRM - insert replacement mode */
svsp->irm = 0; /* Replace mode */
break;
case 5: /* SRTM - status report transfer mode */
case 6: /* ERM - erasue mode */
case 7: /* VEM - vertical editing mode */
case 10: /* HEM - horizontal editing mode */
case 11: /* PUM - position unit mode */
case 12: /* SRM - send-receive mode */
case 13: /* FEAM - format effector action mode */
case 14: /* FETM - format effector transfer mode */
case 15: /* MATM - multiple area transfer mode */
case 16: /* TTM - transfer termination */
case 17: /* SATM - selected area transfer mode */
case 18: /* TSM - tabulation stop mode */
case 19: /* EBM - editing boundary mode */
break;
case 20: /* LNM - line feed / newline mode */
svsp->lnm = 0;
break;
}
}
/*---------------------------------------------------------------------------*
* clear tab stop(s)
*---------------------------------------------------------------------------*/
void
vt_clrtab(struct video_state *svsp)
{
int i;
if(svsp->parms[0] == 0)
svsp->tab_stops[svsp->col] = 0;
else if(svsp->parms[0] == 3)
{
for(i=0; i<MAXTAB; i++)
svsp->tab_stops[i] = 0;
}
}
/*---------------------------------------------------------------------------*
* DECSC - save cursor & attributes
*---------------------------------------------------------------------------*/
void
vt_sc(struct video_state *svsp)
{
svsp->sc_flag = 1;
svsp->sc_row = svsp->row;
svsp->sc_col = svsp->col;
svsp->sc_cur_offset = svsp->cur_offset;
svsp->sc_attr = svsp->c_attr;
svsp->sc_awm = svsp->m_awm;
svsp->sc_om = svsp->m_om;
svsp->sc_G0 = svsp->G0;
svsp->sc_G1 = svsp->G1;
svsp->sc_G2 = svsp->G2;
svsp->sc_G3 = svsp->G3;
svsp->sc_GL = svsp->GL;
svsp->sc_GR = svsp->GR;
svsp->sc_sel = svsp->selchar;
svsp->sc_vtsgr = svsp->vtsgr;
}
/*---------------------------------------------------------------------------*
* DECRC - restore cursor & attributes
*---------------------------------------------------------------------------*/
void
vt_rc(struct video_state *svsp)
{
if(svsp->sc_flag == 1)
{
svsp->sc_flag = 0;
svsp->row = svsp->sc_row;
svsp->col = svsp->sc_col;
svsp->cur_offset = svsp->sc_cur_offset;
svsp->c_attr = svsp->sc_attr;
svsp->m_awm = svsp->sc_awm;
svsp->m_om = svsp->sc_om;
svsp->G0 = svsp->sc_G0;
svsp->G1 = svsp->sc_G1;
svsp->G2 = svsp->sc_G2;
svsp->G3 = svsp->sc_G3;
svsp->GL = svsp->sc_GL;
svsp->GR = svsp->sc_GR;
svsp->selchar = svsp->sc_sel;
svsp->vtsgr = svsp->sc_vtsgr;
}
}
/*---------------------------------------------------------------------------*
* designate a character set as G0, G1, G2 or G3 for 94/96 char sets
*---------------------------------------------------------------------------*/
void
vt_designate(struct video_state *svsp)
{
u_short *ctp = NULL;
u_char ch;
if(svsp->whichi == 1)
ch = svsp->which[0];
else
{
int i;
if(svsp->dld_id[0] == '\0')
return;
if(!(((adaptor_type == EGA_ADAPTOR) ||
(adaptor_type == VGA_ADAPTOR)) &&
(vgacs[svsp->vga_charset].secondloaded)))
{
return;
}
for(i = (svsp->whichi)-1; i >= 0; i--)
{
if(svsp->which[i] != svsp->dld_id[i])
return;
}
#ifdef HAVECSE_DOWNLOADABLE
ctp = cse_downloadable;
swcsp(svsp, ctp);
#endif
return;
}
if(((adaptor_type == EGA_ADAPTOR) || (adaptor_type == VGA_ADAPTOR)) &&
(vgacs[svsp->vga_charset].secondloaded))
{
if((ch == svsp->dld_id[0]) && (svsp->dld_id[1] == '\0'))
{
#ifdef HAVECSE_DOWNLOADABLE
ctp = cse_downloadable;
swcsp(svsp, ctp);
#endif
return;
}
switch(ch)
{
case 'A': /* British or ISO-Latin-1 */
switch(svsp->state)
{
case STATE_BROPN: /* designate G0 */
case STATE_BRCLO: /* designate G1 */
case STATE_STAR: /* designate G2 */
case STATE_PLUS: /* designate G3 */
#ifdef HAVECSE_BRITISH
ctp = cse_british;
#endif
break;
case STATE_MINUS: /* designate G1 (96)*/
case STATE_DOT: /* designate G2 (96)*/
case STATE_SLASH: /* designate G3 (96)*/
#ifdef HAVECSE_ISOLATIN
ctp = cse_isolatin;
#endif
break;
}
break;
case 'B': /* USASCII */
#ifdef HAVECSE_ASCII
ctp = cse_ascii;
#endif
break;
case 'C': /* Finnish */
case '5': /* Finnish */
#ifdef HAVECSE_FINNISH
ctp = cse_finnish;
#endif
break;
case 'E': /* Norwegian/Danish */
case '6': /* Norwegian/Danish */
#ifdef HAVECSE_NORWEGIANDANISH
ctp = cse_norwegiandanish;
#endif
break;
case 'H': /* Swedish */
case '7': /* Swedish */
#ifdef HAVECSE_SWEDISH
ctp = cse_swedish;
#endif
break;
case 'K': /* German */
#ifdef HAVECSE_GERMAN
ctp = cse_german;
#endif
break;
case 'Q': /* French Canadien */
#ifdef HAVECSE_FRENCHCANADA
ctp = cse_frenchcanada;
#endif
break;
case 'R': /* French */
#ifdef HAVECSE_FRENCH
ctp = cse_french;
#endif
break;
case 'Y': /* Italian */
#ifdef HAVECSE_ITALIAN
ctp = cse_italian;
#endif
break;
case 'Z': /* Spanish */
#ifdef HAVECSE_SPANISH
ctp = cse_spanish;
#endif
break;
case '0': /* special graphics */
#ifdef HAVECSE_SPECIAL
ctp = cse_special;
#endif
break;
case '1': /* alternate ROM */
#ifdef HAVECSE_ALTERNATEROM1
ctp = cse_alternaterom1;
#endif
break;
case '2': /* alt ROM, spec graphics */
#ifdef HAVECSE_ALTERNATEROM2
ctp = cse_alternaterom2;
#endif
break;
case '3': /* HP Roman 8, upper 128 chars*/
#ifdef HAVECSE_ROMAN8
ctp = cse_roman8;
#endif
break;
case '4': /* Dutch */
#ifdef HAVECSE_DUTCH
ctp = cse_dutch;
#endif
break;
case '<': /* DEC Supplemental */
#ifdef HAVECSE_SUPPLEMENTAL
ctp = cse_supplemental;
#endif
break;
case '=': /* Swiss */
#ifdef HAVECSE_SWISS
ctp = cse_swiss;
#endif
break;
case '>': /* DEC Technical */
#ifdef HAVECSE_TECHNICAL
ctp = cse_technical;
#endif
break;
default:
break;
}
}
else
{
switch(ch)
{
case 'A': /* British or ISO-Latin-1 */
switch(svsp->state)
{
case STATE_BROPN: /* designate G0 */
case STATE_BRCLO: /* designate G1 */
case STATE_STAR: /* designate G2 */
case STATE_PLUS: /* designate G3 */
#ifdef HAVECSD_BRITISH
ctp = csd_british;
#endif
break;
case STATE_MINUS: /* designate G1 (96)*/
case STATE_DOT: /* designate G2 (96)*/
case STATE_SLASH: /* designate G3 (96)*/
#ifdef HAVECSD_ISOLATIN
ctp = csd_isolatin;
#endif
break;
}
break;
case 'B': /* USASCII */
#ifdef HAVECSD_ASCII
ctp = csd_ascii;
#endif
break;
case 'C': /* Finnish */
case '5': /* Finnish */
#ifdef HAVECSD_FINNISH
ctp = csd_finnish;
#endif
break;
case 'E': /* Norwegian/Danish */
case '6': /* Norwegian/Danish */
#ifdef HAVECSD_NORWEGIANDANISH
ctp = csd_norwegiandanish;
#endif
break;
case 'H': /* Swedish */
case '7': /* Swedish */
#ifdef HAVECSD_SWEDISH
ctp = csd_swedish;
#endif
break;
case 'K': /* German */
#ifdef HAVECSD_GERMAN
ctp = csd_german;
#endif
break;
case 'Q': /* French Canadien */
#ifdef HAVECSD_FRENCHCANADA
ctp = csd_frenchcanada;
#endif
break;
case 'R': /* French */
#ifdef HAVECSD_FRENCH
ctp = csd_french;
#endif
break;
case 'Y': /* Italian */
#ifdef HAVECSD_ITALIAN
ctp = csd_italian;
#endif
break;
case 'Z': /* Spanish */
#ifdef HAVECSD_SPANISH
ctp = csd_spanish;
#endif
break;
case '0': /* special graphics */
#ifdef HAVECSD_SPECIAL
ctp = csd_special;
#endif
break;
case '1': /* alternate ROM */
#ifdef HAVECSD_ALTERNATEROM1
ctp = csd_alternaterom1;
#endif
break;
case '2': /* alt ROM, spec graphics */
#ifdef HAVECSD_ALTERNATEROM2
ctp = csd_alternaterom2;
#endif
break;
case '3': /* HP Roman 8, upper 128 chars*/
#ifdef HAVECSD_ROMAN8
ctp = csd_roman8;
#endif
break;
case '4': /* Dutch */
#ifdef HAVECSD_DUTCH
ctp = csd_dutch;
#endif
break;
case '<': /* DEC Supplemental */
#ifdef HAVECSD_SUPPLEMENTAL
ctp = csd_supplemental;
#endif
break;
case '=': /* Swiss */
#ifdef HAVECSD_SWISS
ctp = csd_swiss;
#endif
break;
case '>': /* DEC Technical */
#ifdef HAVECSD_TECHNICAL
ctp = csd_technical;
#endif
break;
default:
break;
}
}
swcsp(svsp, ctp);
}
/*---------------------------------------------------------------------------*
* device attributes
*---------------------------------------------------------------------------*/
void
vt_da(struct video_state *svsp)
{
static u_char *response = (u_char *)DA_VT220;
svsp->report_chars = response;
svsp->report_count = 18;
respond(svsp);
}
/*---------------------------------------------------------------------------*
* screen alignment display
*---------------------------------------------------------------------------*/
void
vt_aln(struct video_state *svsp)
{
register int i;
svsp->cur_offset = 0;
svsp->col = 0;
for(i=0; i < (svsp->screen_rows*svsp->maxcol); i++)
{
*(svsp->Crtat + svsp->cur_offset) = user_attr | 'E';
vt_selattr(svsp);
svsp->cur_offset++;
svsp->col++;
}
svsp->cur_offset = 0; /* reset everything ! */
svsp->col = 0;
svsp->row = 0;
}
/*---------------------------------------------------------------------------*
* request terminal parameters
*---------------------------------------------------------------------------*/
void
vt_reqtparm(struct video_state *svsp)
{
static u_char *answr = (u_char *)"\033[3;1;1;120;120;1;0x";
svsp->report_chars = answr;
svsp->report_count = 20;
respond(svsp);
}
/*---------------------------------------------------------------------------*
* invoke selftest
*---------------------------------------------------------------------------*/
void
vt_tst(struct video_state *svsp)
{
clear_dld(svsp);
}
/*---------------------------------------------------------------------------*
* device status reports
*---------------------------------------------------------------------------*/
void
vt_dsr(struct video_state *svsp)
{
static u_char *answr = (u_char *)"\033[0n";
static u_char *panswr = (u_char *)"\033[?13n"; /* Printer Unattached */
static u_char *udkanswr = (u_char *)"\033[?21n"; /* UDK Locked */
static u_char *langanswr = (u_char *)"\033[?27;1n"; /* North American*/
static u_char buffer[16];
int i = 0;
switch(svsp->parms[0])
{
case 5: /* return status */
svsp->report_chars = answr;
svsp->report_count = 4;
respond(svsp);
break;
case 6: /* return cursor position */
buffer[i++] = 0x1b;
buffer[i++] = '[';
if((svsp->row+1) > 10)
buffer[i++] = ((svsp->row+1) / 10) + '0';
buffer[i++] = ((svsp->row+1) % 10) + '0';
buffer[i++] = ';';
if((svsp->col+1) > 10)
buffer[i++] = ((svsp->col+1) / 10) + '0';
buffer[i++] = ((svsp->col+1) % 10) + '0';
buffer[i++] = 'R';
buffer[i++] = '\0';
svsp->report_chars = buffer;
svsp->report_count = i;
respond(svsp);
break;
case 15: /* return printer status */
svsp->report_chars = panswr;
svsp->report_count = 6;
respond(svsp);
break;
case 25: /* return udk status */
svsp->report_chars = udkanswr;
svsp->report_count = 6;
respond(svsp);
break;
case 26: /* return language status */
svsp->report_chars = langanswr;
svsp->report_count = 8;
respond(svsp);
break;
default: /* nothing else valid */
break;
}
}
/*---------------------------------------------------------------------------*
* IL - insert line
*---------------------------------------------------------------------------*/
void
vt_il(struct video_state *svsp)
{
register int p = svsp->parms[0];
if((svsp->row >= svsp->scrr_beg) && (svsp->row <= svsp->scrr_end))
{
if(p <= 0)
p = 1;
else if(p > svsp->scrr_end - svsp->row)
p = svsp->scrr_end - svsp->row;
svsp->cur_offset -= svsp->col;
svsp->col = 0;
if(svsp->row == svsp->scrr_beg)
roll_down(svsp, p);
else
{
bcopy(svsp->Crtat + svsp->cur_offset,
svsp->Crtat + svsp->cur_offset + (p * svsp->maxcol),
svsp->maxcol * (svsp->scrr_end-svsp->row+1-p) * CHR );
fillw(user_attr | ' ',
svsp->Crtat + svsp->cur_offset,
p * svsp->maxcol);
}
}
}
/*---------------------------------------------------------------------------*
* ICH - insert character
*---------------------------------------------------------------------------*/
void
vt_ic(struct video_state *svsp)
{
register int p = svsp->parms[0];
if(p <= 0)
p = 1;
else if(p > svsp->maxcol-svsp->col)
p = svsp->maxcol-svsp->col;
while(p--)
{
bcopy((svsp->Crtat + svsp->cur_offset),
(svsp->Crtat + svsp->cur_offset) + 1,
(((svsp->maxcol)-1)-svsp->col) * CHR);
*(svsp->Crtat + svsp->cur_offset) = user_attr | ' ';
vt_selattr(svsp);
}
}
/*---------------------------------------------------------------------------*
* DL - delete line
*---------------------------------------------------------------------------*/
void
vt_dl(struct video_state *svsp)
{
register int p = svsp->parms[0];
if((svsp->row >= svsp->scrr_beg) && (svsp->row <= svsp->scrr_end))
{
if(p <= 0)
p = 1;
else if(p > svsp->scrr_end - svsp->row)
p = svsp->scrr_end - svsp->row;
svsp->cur_offset -= svsp->col;
svsp->col = 0;
if(svsp->row == svsp->scrr_beg)
roll_up(svsp, p);
else
{
bcopy(svsp->Crtat + svsp->cur_offset + (p * svsp->maxcol),
svsp->Crtat + svsp->cur_offset,
svsp->maxcol * (svsp->scrr_end-svsp->row+1-p) * CHR );
fillw(user_attr | ' ',
svsp->Crtat + ((svsp->scrr_end-p+1) * svsp->maxcol),
p * svsp->maxcol);
}
}
}
/*---------------------------------------------------------------------------*
* DCH - delete character
*---------------------------------------------------------------------------*/
void
vt_dch(struct video_state *svsp)
{
register int p = svsp->parms[0];
if(p <= 0)
p = 1;
else if(p > svsp->maxcol-svsp->col)
p = svsp->maxcol-svsp->col;
while(p--)
{
bcopy((svsp->Crtat + svsp->cur_offset)+1,
(svsp->Crtat + svsp->cur_offset),
(((svsp->maxcol)-1) - svsp->col)* CHR );
*((svsp->Crtat + svsp->cur_offset) +
((svsp->maxcol)-1)-svsp->col) = user_attr | ' ';
}
}
/*---------------------------------------------------------------------------*
* scroll up
*---------------------------------------------------------------------------*/
void
vt_su(struct video_state *svsp)
{
register int p = svsp->parms[0];
if(p <= 0)
p = 1;
else if(p > svsp->screen_rows-1)
p = svsp->screen_rows-1;
roll_up(svsp, p);
}
/*---------------------------------------------------------------------------*
* scroll down
*---------------------------------------------------------------------------*/
void
vt_sd(struct video_state *svsp)
{
register int p = svsp->parms[0];
if(p <= 0)
p = 1;
else if(p > svsp->screen_rows-1)
p = svsp->screen_rows-1;
roll_down(svsp, p);
}
/*---------------------------------------------------------------------------*
* ECH - erase character
*---------------------------------------------------------------------------*/
void
vt_ech(struct video_state *svsp)
{
register int p = svsp->parms[0];
if(p <= 0)
p = 1;
else if(p > svsp->maxcol-svsp->col)
p = svsp->maxcol-svsp->col;
fillw(user_attr | ' ', (svsp->Crtat + svsp->cur_offset), p);
}
/*---------------------------------------------------------------------------*
* media copy (NO PRINTER AVAILABLE IN KERNEL ...)
*---------------------------------------------------------------------------*/
void
vt_mc(struct video_state *svsp)
{
}
/*---------------------------------------------------------------------------*
* Device Control String State Machine Entry for:
*
* DECUDK - user-defined keys and
* DECDLD - downloadable charset
*
*---------------------------------------------------------------------------*/
void
vt_dcsentry(U_char ch, struct video_state *svsp)
{
switch(svsp->dcs_state)
{
case DCS_INIT:
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 '|': /* DECUDK */
svsp->transparent = 1;
init_udk(svsp);
svsp->dcs_state = DCS_AND_UDK;
break;
case '{': /* DECDLD */
svsp->transparent = 1;
init_dld(svsp);
svsp->dcs_state = DCS_DLD_DSCS;
break;
default: /* failsafe */
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
break;
}
break;
case DCS_AND_UDK: /* DCS ... | */
switch(ch)
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': /* fkey number */
svsp->udk_fnckey *= 10;
svsp->udk_fnckey += (ch -'0');
break;
case '/': /* Key */
svsp->dcs_state = DCS_UDK_DEF;
break;
case 0x1b: /* ESC */
svsp->dcs_state = DCS_UDK_ESC;
break;
default:
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
break;
}
break;
case DCS_UDK_DEF: /* DCS ... | fnckey / */
switch(ch)
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if(svsp->udk_deflow) /* low nibble */
{
svsp->udk_def[svsp->udk_defi] |= (ch -'0');
svsp->udk_deflow = 0;
svsp->udk_defi = (svsp->udk_defi+1 >= MAXUDKDEF) ?
svsp->udk_defi : svsp->udk_defi+1;
}
else /* high nibble */
{
svsp->udk_def[svsp->udk_defi] = ((ch -'0') << 4);
svsp->udk_deflow = 1;
}
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
if(svsp->udk_deflow) /* low nibble */
{
svsp->udk_def[svsp->udk_defi] |= (ch - 'a' + 10);
svsp->udk_deflow = 0;
svsp->udk_defi = (svsp->udk_defi+1 >= MAXUDKDEF) ?
svsp->udk_defi : svsp->udk_defi+1;
}
else /* high nibble */
{
svsp->udk_def[svsp->udk_defi] = ((ch - 'a' + 10) << 4);
svsp->udk_deflow = 1;
}
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
if(svsp->udk_deflow) /* low nibble */
{
svsp->udk_def[svsp->udk_defi] |= (ch - 'A' + 10);
svsp->udk_deflow = 0;
svsp->udk_defi = (svsp->udk_defi+1 >= MAXUDKDEF) ?
svsp->udk_defi : svsp->udk_defi+1;
}
else /* high nibble */
{
svsp->udk_def[svsp->udk_defi] = ((ch - 'A' + 10) << 4);
svsp->udk_deflow = 1;
}
break;
case ';': /* next function key */
vt_udk(svsp);
svsp->dcs_state = DCS_AND_UDK;
break;
case 0x1b: /* ESC */
svsp->dcs_state = DCS_UDK_ESC;
break;
default:
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
break;
}
break;
case DCS_UDK_ESC: /* DCS ... | fkey/def ... ESC */
switch(ch)
{
case '\\': /* ST */
vt_udk(svsp);
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
break;
default:
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
break;
}
break;
case DCS_DLD_DSCS: /* got DCS ... { */
if(ch >= ' ' && ch <= '/') /* intermediates ... */
{
svsp->dld_dscs[svsp->dld_dscsi] = ch;
svsp->dld_id[svsp->dld_dscsi] = ch;
if(svsp->dld_dscsi >= DSCS_LENGTH)
{
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
svsp->dld_id[0] = '\0';
}
else
{
svsp->dld_dscsi++;
}
}
else if(ch >= '0' && ch <= '~') /* final .... */
{
svsp->dld_dscs[svsp->dld_dscsi] = ch;
svsp->dld_id[svsp->dld_dscsi++] = ch;
svsp->dld_id[svsp->dld_dscsi] = '\0';
svsp->dcs_state = DCS_DLD_DEF;
}
else
{
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
svsp->dld_id[0] = '\0';
}
break;
case DCS_DLD_DEF: /* DCS ... { dscs */
switch(ch)
{
case 0x1b: /* ESC */
svsp->dcs_state = DCS_DLD_ESC;
break;
case '/': /* sixel upper / lower divider */
svsp->dld_sixel_lower = 1;
break;
case ';': /* character divider */
vt_dld(svsp);
svsp->parms[1]++; /* next char */
break;
default:
if (svsp->dld_sixel_lower)
{
if(ch >= '?' && ch <= '~')
svsp->sixel.lower[svsp->dld_sixelli] = ch - '?';
svsp->dld_sixelli =
(svsp->dld_sixelli+1 < MAXSIXEL) ?
svsp->dld_sixelli+1 : svsp->dld_sixelli;
}
else
{
if(ch >= '?' && ch <= '~')
svsp->sixel.upper[svsp->dld_sixelui] = ch - '?';
svsp->dld_sixelui =
(svsp->dld_sixelui+1 < MAXSIXEL) ?
svsp->dld_sixelui+1 : svsp->dld_sixelui;
}
break;
}
break;
case DCS_DLD_ESC: /* DCS ... { dscs ... / ... ESC */
switch(ch)
{
case '\\': /* String Terminator ST */
vt_dld(svsp);
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
break;
default:
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
svsp->dld_id[0] = '\0';
break;
}
break;
default:
svsp->transparent = 0;
svsp->state = STATE_INIT;
svsp->dcs_state = DCS_INIT;
break;
}
}
/*---------------------------------------------------------------------------*
* User Defineable Keys
*---------------------------------------------------------------------------*/
void
vt_udk(struct video_state *svsp)
{
int key, start, max, i;
int usedff = 0;
if(svsp->parms[0] != 1) /* clear all ? */
{
vt_clearudk(svsp);
svsp->parms[0] = 1;
}
if(svsp->udk_fnckey < 17 || svsp->udk_fnckey > 34)
{
init_udk(svsp);
return;
}
key = svsp->udk_fnckey - 17; /* index into table */
if(svsp->ukt.length[key] == 0) /* never used ? */
{
if(svsp->udkff < MAXUDKDEF-2) /* space available ? */
{
start = svsp->udkff; /* next sequential */
max = MAXUDKDEF - svsp->udkff; /* space available */
svsp->ukt.first[key] = start; /* start entry */
usedff = 1; /* flag to update later */
}
else /* no space */
{
init_udk(svsp);
return;
}
}
else /* in use, redefine */
{
start = svsp->ukt.first[key]; /* start entry */
max = svsp->ukt.length[key]; /* space available */
}
if(max < 2) /* hmmm .. */
{
init_udk(svsp);
return;
}
max--; /* adjust for tailing '\0' */
for(i = 0; i < max && i < svsp->udk_defi; i++)
svsp->udkbuf[start++] = svsp->udk_def[i];
svsp->udkbuf[start] = '\0'; /* make it a string, see pcvt_kbd.c */
svsp->ukt.length[key] = i+1; /* count for tailing '\0' */
if(usedff)
svsp->udkff += (i+2); /* new start location */
init_udk(svsp);
}
/*---------------------------------------------------------------------------*
* clear all User Defineable Keys
*---------------------------------------------------------------------------*/
void
vt_clearudk(struct video_state *svsp)
{
register int i;
for(i = 0; i < MAXUDKEYS; i++)
{
svsp->ukt.first[i] = 0;
svsp->ukt.length[i] = 0;
}
svsp->udkff = 0;
}
/*---------------------------------------------------------------------------*
* Down line LoaDable Fonts
*---------------------------------------------------------------------------*/
void
vt_dld(struct video_state *svsp)
{
unsigned char vgacharset;
unsigned char vgachar[16];
unsigned char vgacharb[16];
if(vgacs[svsp->vga_charset].secondloaded)
vgacharset = vgacs[svsp->vga_charset].secondloaded;
else
return;
svsp->parms[1] = (svsp->parms[1] < 1) ? 1 :
((svsp->parms[1] > 0x7E) ? 0x7E : svsp->parms[1]);
if(svsp->parms[2] != 1) /* Erase all characters ? */
{
clear_dld(svsp);
svsp->parms[2] = 1; /* Only erase all characters once per sequence */
}
sixel_vga(&(svsp->sixel),vgachar);
switch(vgacs[vgacharset].char_scanlines & 0x1F)
{
case 7:
vga10_vga8(vgachar,vgacharb);
break;
case 9:
default:
vga10_vga10(vgachar,vgacharb);
break;
case 13:
vga10_vga14(vgachar,vgacharb);
break;
case 15:
vga10_vga16(vgachar,vgacharb);
break;
}
loadchar(vgacharset, svsp->parms[1] + 0xA0, 16, vgacharb);
init_dld(svsp);
}
/*---------------------------------------------------------------------------*
* select character attributes
*---------------------------------------------------------------------------*/
void
vt_sca(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 1:
svsp->selchar = 1;
break;
case 0:
case 2:
default:
svsp->selchar = 0;
break;
}
}
/*---------------------------------------------------------------------------*
* initalize selective attribute bit array
*---------------------------------------------------------------------------*/
void
vt_initsel(struct video_state *svsp)
{
register int i;
for(i = 0;i < MAXDECSCA;i++)
svsp->decsca[i] = 0;
}
/*---------------------------------------------------------------------------*
* DECSEL - selective erase in line
*---------------------------------------------------------------------------*/
void
vt_sel(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0:
selective_erase(svsp, (svsp->Crtat + svsp->cur_offset),
svsp->maxcol-svsp->col);
break;
case 1:
selective_erase(svsp, (svsp->Crtat + svsp->cur_offset)-
svsp->col, svsp->col + 1);
break;
case 2:
selective_erase(svsp, (svsp->Crtat + svsp->cur_offset)-
svsp->col, svsp->maxcol);
break;
}
}
/*---------------------------------------------------------------------------*
* DECSED - selective erase in display
*---------------------------------------------------------------------------*/
void
vt_sed(struct video_state *svsp)
{
switch(svsp->parms[0])
{
case 0:
selective_erase(svsp, (svsp->Crtat + svsp->cur_offset),
svsp->Crtat + (svsp->maxcol * svsp->screen_rows) -
(svsp->Crtat + svsp->cur_offset));
break;
case 1:
selective_erase(svsp, svsp->Crtat,
(svsp->Crtat + svsp->cur_offset) - svsp->Crtat + 1 );
break;
case 2:
selective_erase(svsp, svsp->Crtat,
svsp->maxcol * svsp->screen_rows);
break;
}
}
/*---------------------------------------------------------------------------*
* scroll screen n lines up
*---------------------------------------------------------------------------*/
void
roll_up(struct video_state *svsp, int n)
{
#if (PCVT_NOFASTSCROLL==0)
if(svsp->scrr_beg == 0 && /* if scroll region is whole screen */
svsp->scrr_len == svsp->screen_rows &&
(svsp != vsp || /* and either running in memory */
(svsp->screen_rows == svsp->screen_rowsize && /* or no fkeys */
adaptor_type != MDA_ADAPTOR))) /* and not on MDA/Hercules */
{
u_short *Memory =
#if PCVT_USL_VT_COMPAT
(vsp != svsp || (vsp->vt_status & VT_GRAFX)) ?
#else
(vsp != svsp) ?
#endif
svsp->Memory : Crtat;
if(svsp->Crtat > (Memory + (svsp->screen_rows - n) *
svsp->maxcol))
{
bcopy(svsp->Crtat + svsp->maxcol * n, Memory,
svsp->maxcol * (svsp->screen_rows - n) * CHR);
svsp->Crtat = Memory;
}
else
{
svsp->Crtat += n * svsp->maxcol;
}
#if PCVT_USL_VT_COMPAT
if(vsp == svsp && !(vsp->vt_status & VT_GRAFX))
#else
if(vsp == svsp)
#endif
{
outb(addr_6845, CRTC_STARTADRH);
outb(addr_6845+1, (svsp->Crtat - Crtat) >> 8);
outb(addr_6845, CRTC_STARTADRL);
outb(addr_6845+1, (svsp->Crtat - Crtat));
}
}
else
#endif
{
bcopy( svsp->Crtat + ((svsp->scrr_beg + n) * svsp->maxcol),
svsp->Crtat + (svsp->scrr_beg * svsp->maxcol),
svsp->maxcol * (svsp->scrr_len - n) * CHR );
}
fillw( user_attr | ' ',
svsp->Crtat + ((svsp->scrr_end - n + 1) * svsp->maxcol),
n * svsp->maxcol);
/*XXX*/ if(svsp->scroll_lock && svsp->openf && curproc)
tsleep((caddr_t)&(svsp->scroll_lock), PUSER, "scrlck", 0);
}
/*---------------------------------------------------------------------------*
* scroll screen n lines down
*---------------------------------------------------------------------------*/
static void
roll_down(struct video_state *svsp, int n)
{
#if (PCVT_NOFASTSCROLL==0)
if(svsp->scrr_beg == 0 && /* if scroll region is whole screen */
svsp->scrr_len == svsp->screen_rows &&
(svsp != vsp || /* and either running in memory */
(svsp->screen_rows == svsp->screen_rowsize && /* or no fkeys */
adaptor_type != MDA_ADAPTOR))) /* and not on MDA/Hercules */
{
u_short *Memory =
#if PCVT_USL_VT_COMPAT
(vsp != svsp || (vsp->vt_status & VT_GRAFX)) ?
#else
(vsp != svsp) ?
#endif
svsp->Memory : Crtat;
if (svsp->Crtat < (Memory + n * svsp->maxcol))
{
bcopy(svsp->Crtat,
Memory + svsp->maxcol * (svsp->screen_rows + n),
svsp->maxcol * (svsp->screen_rows - n) * CHR);
svsp->Crtat = Memory + svsp->maxcol * svsp->screen_rows;
}
else
{
svsp->Crtat -= n * svsp->maxcol;
}
#if PCVT_USL_VT_COMPAT
if(vsp == svsp && !(vsp->vt_status & VT_GRAFX))
#else
if(vsp == svsp)
#endif
{
outb(addr_6845, CRTC_STARTADRH);
outb(addr_6845+1, (svsp->Crtat - Crtat) >> 8);
outb(addr_6845, CRTC_STARTADRL);
outb(addr_6845+1, (svsp->Crtat - Crtat));
}
}
else
#endif
{
bcopy( svsp->Crtat + (svsp->scrr_beg * svsp->maxcol),
svsp->Crtat + ((svsp->scrr_beg + n) * svsp->maxcol),
svsp->maxcol * (svsp->scrr_len - n) * CHR );
}
fillw( user_attr | ' ',
svsp->Crtat + (svsp->scrr_beg * svsp->maxcol),
n * svsp->maxcol);
/*XXX*/ if(svsp->scroll_lock && svsp->openf && curproc)
tsleep((caddr_t)&(svsp->scroll_lock), PUSER, "scrlck", 0);
}
/*---------------------------------------------------------------------------*
* switch charset pointers
*---------------------------------------------------------------------------*/
static void
swcsp(struct video_state *svsp, u_short *ctp)
{
if(ctp == NULL)
return;
switch(svsp->state)
{
case STATE_BROPN: /* designate G0 */
svsp->G0 = ctp;
break;
case STATE_BRCLO: /* designate G1 */
case STATE_MINUS: /* designate G1 (96) */
svsp->G1 = ctp;
break;
case STATE_STAR: /* designate G2 */
case STATE_DOT: /* designate G2 (96) */
svsp->G2 = ctp;
break;
case STATE_PLUS: /* designate G3 */
case STATE_SLASH: /* designate G3 (96) */
svsp->G3 = ctp;
break;
}
}
/*---------------------------------------------------------------------------*
* process terminal responses
*---------------------------------------------------------------------------*/
static void
respond(struct video_state *svsp)
{
if(!(svsp->openf)) /* are we opened ? */
return;
while (*svsp->report_chars && svsp->report_count > 0)
{
(*linesw[svsp->vs_tty->t_line].l_rint)
(*svsp->report_chars++ & 0xff, svsp->vs_tty);
svsp->report_count--;
}
}
/*---------------------------------------------------------------------------*
* Initialization for User Defineable Keys
*---------------------------------------------------------------------------*/
static void
init_udk(struct video_state *svsp)
{
svsp->udk_defi = 0;
svsp->udk_deflow = 0;
svsp->udk_fnckey = 0;
}
/*---------------------------------------------------------------------------*
* Clear loaded downloadable (DLD) character set
*---------------------------------------------------------------------------*/
static void
clear_dld(struct video_state *svsp)
{
register int i;
unsigned char vgacharset;
unsigned char vgachar[16];
if(vgacs[svsp->vga_charset].secondloaded)
vgacharset = vgacs[svsp->vga_charset].secondloaded;
else
return;
for(i=0;i < 16;i++) /* A zeroed character, vt220 has inverted '?' */
vgachar[i] = 0x00;
for(i=1;i <= 94;i++) /* Load (erase) all characters */
loadchar(vgacharset, i + 0xA0, 16, vgachar);
}
/*---------------------------------------------------------------------------*
* Initialization for Down line LoaDable Fonts
*---------------------------------------------------------------------------*/
static void
init_dld(struct video_state *svsp)
{
register int i;
svsp->dld_dscsi = 0;
svsp->dld_sixel_lower = 0;
svsp->dld_sixelli = 0;
svsp->dld_sixelui = 0;
for(i = 0;i < MAXSIXEL;i++)
svsp->sixel.lower[i] = svsp->sixel.upper[i] = 0;
}
/*---------------------------------------------------------------------------*
* selective erase a region
*---------------------------------------------------------------------------*/
static void
selective_erase(struct video_state *svsp, u_short *pcrtat, int length)
{
register int i, j;
for(j = pcrtat - svsp->Crtat, i = 0;i < length;i++,pcrtat++)
{
if(!(svsp->decsca[INT_INDEX(j+i)] & (1 << BIT_INDEX(j+i))))
{
*pcrtat &= 0xFF00; /* Keep the video character attributes */
*pcrtat += ' '; /* Erase the character */
}
}
}
#endif /* NVT > 0 */
/* ------------------------- E O F ------------------------------------------*/
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