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freebsd/sys/dev/syscons/scterm-sc.c
John Baldwin cf0a305e5b Indent the comment about the Alpha palette evilness correctly. 
Noticed by:	bde
2001-03-06 20:36:06 +00:00

783 lines
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/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* Copyright (c) 1992-1998 Søren Schmidt
* All rights reserved.
*
* 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 as
* the first lines of this file unmodified.
* 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.
*
* 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.
*
* $FreeBSD$
*/
#include "opt_syscons.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/consio.h>
#include <machine/pc/display.h>
#include <dev/syscons/syscons.h>
#include <dev/syscons/sctermvar.h>
#ifndef SC_DUMB_TERMINAL
#define MAX_ESC_PAR 5
/* attribute flags */
typedef struct {
u_short fg; /* foreground color */
u_short bg; /* background color */
} color_t;
typedef struct {
int flags;
#define SCTERM_BUSY (1 << 0)
int esc;
int num_param;
int last_param;
int param[MAX_ESC_PAR];
int saved_xpos;
int saved_ypos;
int attr_mask; /* current logical attr mask */
#define NORMAL_ATTR 0x00
#define BLINK_ATTR 0x01
#define BOLD_ATTR 0x02
#define UNDERLINE_ATTR 0x04
#define REVERSE_ATTR 0x08
#define FG_CHANGED 0x10
#define BG_CHANGED 0x20
int cur_attr; /* current hardware attr word */
color_t cur_color; /* current hardware color */
color_t std_color; /* normal hardware color */
color_t rev_color; /* reverse hardware color */
color_t dflt_std_color; /* default normal color */
color_t dflt_rev_color; /* default reverse color */
} term_stat;
static sc_term_init_t scterm_init;
static sc_term_term_t scterm_term;
static sc_term_puts_t scterm_puts;
static sc_term_ioctl_t scterm_ioctl;
static sc_term_reset_t scterm_reset;
static sc_term_default_attr_t scterm_default_attr;
static sc_term_clear_t scterm_clear;
static sc_term_notify_t scterm_notify;
static sc_term_input_t scterm_input;
static sc_term_sw_t sc_term_sc = {
{ NULL, NULL },
"sc", /* emulator name */
"syscons terminal", /* description */
"*", /* matching renderer, any :-) */
sizeof(term_stat), /* softc size */
0,
scterm_init,
scterm_term,
scterm_puts,
scterm_ioctl,
scterm_reset,
scterm_default_attr,
scterm_clear,
scterm_notify,
scterm_input,
};
SCTERM_MODULE(sc, sc_term_sc);
static term_stat reserved_term_stat;
static void scterm_scan_esc(scr_stat *scp, term_stat *tcp,
u_char c);
static int mask2attr(term_stat *tcp);
static int
scterm_init(scr_stat *scp, void **softc, int code)
{
term_stat *tcp;
if (*softc == NULL) {
if (reserved_term_stat.flags & SCTERM_BUSY)
return EINVAL;
*softc = &reserved_term_stat;
}
tcp = *softc;
switch (code) {
case SC_TE_COLD_INIT:
bzero(tcp, sizeof(*tcp));
tcp->flags = SCTERM_BUSY;
tcp->esc = 0;
tcp->saved_xpos = -1;
tcp->saved_ypos = -1;
tcp->attr_mask = NORMAL_ATTR;
/* XXX */
tcp->dflt_std_color.fg = SC_NORM_ATTR & 0x0f;
tcp->dflt_std_color.bg = (SC_NORM_ATTR >> 4) & 0x0f;
tcp->dflt_rev_color.fg = SC_NORM_REV_ATTR & 0x0f;
tcp->dflt_rev_color.bg = (SC_NORM_REV_ATTR >> 4) & 0x0f;
tcp->std_color = tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
++sc_term_sc.te_refcount;
break;
case SC_TE_WARM_INIT:
tcp->esc = 0;
tcp->saved_xpos = -1;
tcp->saved_ypos = -1;
#if 0
tcp->std_color = tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
#endif
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
break;
}
return 0;
}
static int
scterm_term(scr_stat *scp, void **softc)
{
if (*softc == &reserved_term_stat) {
*softc = NULL;
bzero(&reserved_term_stat, sizeof(reserved_term_stat));
}
--sc_term_sc.te_refcount;
return 0;
}
static void
scterm_scan_esc(scr_stat *scp, term_stat *tcp, u_char c)
{
static u_char ansi_col[16] = {
#ifdef __alpha__
/*
* DEC is evil. They switch the red and blue attributes in
* the palette in the system console. As a simple work-around,
* re-map the ANSI colors appropriately.
*/
FG_BLACK, FG_BLUE, FG_GREEN, FG_CYAN,
FG_RED, FG_MAGENTA, FG_BROWN, FG_LIGHTGREY,
FG_DARKGREY, FG_LIGHTBLUE, FG_LIGHTGREEN, FG_LIGHTCYAN,
FG_LIGHTRED, FG_LIGHTMAGENTA, FG_YELLOW, FG_WHITE
#else
FG_BLACK, FG_RED, FG_GREEN, FG_BROWN,
FG_BLUE, FG_MAGENTA, FG_CYAN, FG_LIGHTGREY,
FG_DARKGREY, FG_LIGHTRED, FG_LIGHTGREEN, FG_YELLOW,
FG_LIGHTBLUE, FG_LIGHTMAGENTA, FG_LIGHTCYAN, FG_WHITE
#endif
};
sc_softc_t *sc;
int i, n;
i = n = 0;
sc = scp->sc;
if (tcp->esc == 1) { /* seen ESC */
switch (c) {
case '7': /* Save cursor position */
tcp->saved_xpos = scp->xpos;
tcp->saved_ypos = scp->ypos;
break;
case '8': /* Restore saved cursor position */
if (tcp->saved_xpos >= 0 && tcp->saved_ypos >= 0)
sc_move_cursor(scp, tcp->saved_xpos,
tcp->saved_ypos);
break;
case '[': /* Start ESC [ sequence */
tcp->esc = 2;
tcp->last_param = -1;
for (i = tcp->num_param; i < MAX_ESC_PAR; i++)
tcp->param[i] = 1;
tcp->num_param = 0;
return;
case 'M': /* Move cursor up 1 line, scroll if at top */
sc_term_up_scroll(scp, 1, sc->scr_map[0x20],
tcp->cur_attr, 0, 0);
break;
#if notyet
case 'Q':
tcp->esc = 4;
return;
#endif
case 'c': /* reset */
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color
= tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_attr = mask2attr(tcp);
sc_clear_screen(scp);
break;
case '(': /* iso-2022: designate 94 character set to G0 */
tcp->esc = 5;
return;
}
} else if (tcp->esc == 2) { /* seen ESC [ */
if (c >= '0' && c <= '9') {
if (tcp->num_param < MAX_ESC_PAR) {
if (tcp->last_param != tcp->num_param) {
tcp->last_param = tcp->num_param;
tcp->param[tcp->num_param] = 0;
} else {
tcp->param[tcp->num_param] *= 10;
}
tcp->param[tcp->num_param] += c - '0';
return;
}
}
tcp->num_param = tcp->last_param + 1;
switch (c) {
case ';':
if (tcp->num_param < MAX_ESC_PAR)
return;
break;
case '=':
tcp->esc = 3;
tcp->last_param = -1;
for (i = tcp->num_param; i < MAX_ESC_PAR; i++)
tcp->param[i] = 1;
tcp->num_param = 0;
return;
case 'A': /* up n rows */
sc_term_up(scp, tcp->param[0], 0);
break;
case 'B': /* down n rows */
sc_term_down(scp, tcp->param[0], 0);
break;
case 'C': /* right n columns */
sc_term_right(scp, tcp->param[0]);
break;
case 'D': /* left n columns */
sc_term_left(scp, tcp->param[0]);
break;
case 'E': /* cursor to start of line n lines down */
n = tcp->param[0];
if (n < 1)
n = 1;
sc_move_cursor(scp, 0, scp->ypos + n);
break;
case 'F': /* cursor to start of line n lines up */
n = tcp->param[0];
if (n < 1)
n = 1;
sc_move_cursor(scp, 0, scp->ypos - n);
break;
case 'f': /* Cursor move */
case 'H':
if (tcp->num_param == 0)
sc_move_cursor(scp, 0, 0);
else if (tcp->num_param == 2)
sc_move_cursor(scp, tcp->param[1] - 1,
tcp->param[0] - 1);
break;
case 'J': /* Clear all or part of display */
if (tcp->num_param == 0)
n = 0;
else
n = tcp->param[0];
sc_term_clr_eos(scp, n, sc->scr_map[0x20],
tcp->cur_attr);
break;
case 'K': /* Clear all or part of line */
if (tcp->num_param == 0)
n = 0;
else
n = tcp->param[0];
sc_term_clr_eol(scp, n, sc->scr_map[0x20],
tcp->cur_attr);
break;
case 'L': /* Insert n lines */
sc_term_ins_line(scp, scp->ypos, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'M': /* Delete n lines */
sc_term_del_line(scp, scp->ypos, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'P': /* Delete n chars */
sc_term_del_char(scp, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr);
break;
case '@': /* Insert n chars */
sc_term_ins_char(scp, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr);
break;
case 'S': /* scroll up n lines */
sc_term_del_line(scp, 0, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'T': /* scroll down n lines */
sc_term_ins_line(scp, 0, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'X': /* erase n characters in line */
n = tcp->param[0];
if (n < 1)
n = 1;
if (n > scp->xsize - scp->xpos)
n = scp->xsize - scp->xpos;
sc_vtb_erase(&scp->vtb, scp->cursor_pos, n,
sc->scr_map[0x20], tcp->cur_attr);
mark_for_update(scp, scp->cursor_pos);
mark_for_update(scp, scp->cursor_pos + n - 1);
break;
case 'Z': /* move n tabs backwards */
sc_term_backtab(scp, tcp->param[0]);
break;
case '`': /* move cursor to column n */
sc_term_col(scp, tcp->param[0]);
break;
case 'a': /* move cursor n columns to the right */
sc_term_right(scp, tcp->param[0]);
break;
case 'd': /* move cursor to row n */
sc_term_row(scp, tcp->param[0]);
break;
case 'e': /* move cursor n rows down */
sc_term_down(scp, tcp->param[0], 0);
break;
case 'm': /* change attribute */
if (tcp->num_param == 0) {
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
break;
}
for (i = 0; i < tcp->num_param; i++) {
switch (n = tcp->param[i]) {
case 0: /* back to normal */
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
break;
case 1: /* bold */
tcp->attr_mask |= BOLD_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 4: /* underline */
tcp->attr_mask |= UNDERLINE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 5: /* blink */
tcp->attr_mask |= BLINK_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 7: /* reverse */
tcp->attr_mask |= REVERSE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 22: /* remove bold (or dim) */
tcp->attr_mask &= ~BOLD_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 24: /* remove underline */
tcp->attr_mask &= ~UNDERLINE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 25: /* remove blink */
tcp->attr_mask &= ~BLINK_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 27: /* remove reverse */
tcp->attr_mask &= ~REVERSE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 30: case 31: /* set ansi fg color */
case 32: case 33: case 34:
case 35: case 36: case 37:
tcp->attr_mask |= FG_CHANGED;
tcp->cur_color.fg = ansi_col[n - 30];
tcp->cur_attr = mask2attr(tcp);
break;
case 39: /* restore fg color back to normal */
tcp->attr_mask &= ~(FG_CHANGED|BOLD_ATTR);
tcp->cur_color.fg = tcp->std_color.fg;
tcp->cur_attr = mask2attr(tcp);
break;
case 40: case 41: /* set ansi bg color */
case 42: case 43: case 44:
case 45: case 46: case 47:
tcp->attr_mask |= BG_CHANGED;
tcp->cur_color.bg = ansi_col[n - 40];
tcp->cur_attr = mask2attr(tcp);
break;
case 49: /* restore bg color back to normal */
tcp->attr_mask &= ~BG_CHANGED;
tcp->cur_color.bg = tcp->std_color.bg;
tcp->cur_attr = mask2attr(tcp);
break;
}
}
break;
case 's': /* Save cursor position */
tcp->saved_xpos = scp->xpos;
tcp->saved_ypos = scp->ypos;
break;
case 'u': /* Restore saved cursor position */
if (tcp->saved_xpos >= 0 && tcp->saved_ypos >= 0)
sc_move_cursor(scp, tcp->saved_xpos,
tcp->saved_ypos);
break;
case 'x':
if (tcp->num_param == 0)
n = 0;
else
n = tcp->param[0];
switch (n) {
case 0: /* reset colors and attributes back to normal */
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color
= tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_attr = mask2attr(tcp);
break;
case 1: /* set ansi background */
tcp->attr_mask &= ~BG_CHANGED;
tcp->cur_color.bg = tcp->std_color.bg
= ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 2: /* set ansi foreground */
tcp->attr_mask &= ~FG_CHANGED;
tcp->cur_color.fg = tcp->std_color.fg
= ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 3: /* set adapter attribute directly */
tcp->attr_mask &= ~(FG_CHANGED | BG_CHANGED);
tcp->cur_color.fg = tcp->std_color.fg
= tcp->param[1] & 0x0f;
tcp->cur_color.bg = tcp->std_color.bg
= (tcp->param[1] >> 4) & 0x0f;
tcp->cur_attr = mask2attr(tcp);
break;
case 5: /* set ansi reverse background */
tcp->rev_color.bg = ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 6: /* set ansi reverse foreground */
tcp->rev_color.fg = ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 7: /* set adapter reverse attribute directly */
tcp->rev_color.fg = tcp->param[1] & 0x0f;
tcp->rev_color.bg = (tcp->param[1] >> 4) & 0x0f;
tcp->cur_attr = mask2attr(tcp);
break;
}
break;
case 'z': /* switch to (virtual) console n */
if (tcp->num_param == 1)
sc_switch_scr(sc, tcp->param[0]);
break;
}
} else if (tcp->esc == 3) { /* seen ESC [0-9]+ = */
if (c >= '0' && c <= '9') {
if (tcp->num_param < MAX_ESC_PAR) {
if (tcp->last_param != tcp->num_param) {
tcp->last_param = tcp->num_param;
tcp->param[tcp->num_param] = 0;
} else {
tcp->param[tcp->num_param] *= 10;
}
tcp->param[tcp->num_param] += c - '0';
return;
}
}
tcp->num_param = tcp->last_param + 1;
switch (c) {
case ';':
if (tcp->num_param < MAX_ESC_PAR)
return;
break;
case 'A': /* set display border color */
if (tcp->num_param == 1) {
scp->border=tcp->param[0] & 0xff;
if (scp == sc->cur_scp)
sc_set_border(scp, scp->border);
}
break;
case 'B': /* set bell pitch and duration */
if (tcp->num_param == 2) {
scp->bell_pitch = tcp->param[0];
scp->bell_duration = tcp->param[1];
}
break;
case 'C': /* set cursor type & shape */
i = spltty();
if (!ISGRAPHSC(sc->cur_scp))
sc_remove_cursor_image(sc->cur_scp);
if (tcp->num_param == 1) {
if (tcp->param[0] & 0x01)
sc->flags |= SC_BLINK_CURSOR;
else
sc->flags &= ~SC_BLINK_CURSOR;
if (tcp->param[0] & 0x02)
sc->flags |= SC_CHAR_CURSOR;
else
sc->flags &= ~SC_CHAR_CURSOR;
} else if (tcp->num_param == 2) {
sc->cursor_base = scp->font_size
- (tcp->param[1] & 0x1F) - 1;
sc->cursor_height = (tcp->param[1] & 0x1F)
- (tcp->param[0] & 0x1F) + 1;
}
/*
* The cursor shape is global property;
* all virtual consoles are affected.
* Update the cursor in the current console...
*/
if (!ISGRAPHSC(sc->cur_scp)) {
sc_set_cursor_image(sc->cur_scp);
sc_draw_cursor_image(sc->cur_scp);
}
splx(i);
break;
case 'F': /* set adapter foreground */
if (tcp->num_param == 1) {
tcp->attr_mask &= ~FG_CHANGED;
tcp->cur_color.fg = tcp->std_color.fg
= tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
case 'G': /* set adapter background */
if (tcp->num_param == 1) {
tcp->attr_mask &= ~BG_CHANGED;
tcp->cur_color.bg = tcp->std_color.bg
= tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
case 'H': /* set adapter reverse foreground */
if (tcp->num_param == 1) {
tcp->rev_color.fg = tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
case 'I': /* set adapter reverse background */
if (tcp->num_param == 1) {
tcp->rev_color.bg = tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
}
#if notyet
} else if (tcp->esc == 4) { /* seen ESC Q */
/* to be filled */
#endif
} else if (tcp->esc == 5) { /* seen ESC ( */
switch (c) {
case 'B': /* iso-2022: desginate ASCII into G0 */
break;
/* other items to be filled */
default:
break;
}
}
tcp->esc = 0;
}
static void
scterm_puts(scr_stat *scp, u_char *buf, int len)
{
term_stat *tcp;
tcp = scp->ts;
outloop:
scp->sc->write_in_progress++;
if (tcp->esc) {
scterm_scan_esc(scp, tcp, *buf);
buf++;
len--;
} else {
switch (*buf) {
case 0x1b:
tcp->esc = 1;
tcp->num_param = 0;
buf++;
len--;
break;
default:
sc_term_gen_print(scp, &buf, &len, tcp->cur_attr);
break;
}
}
sc_term_gen_scroll(scp, scp->sc->scr_map[0x20], tcp->cur_attr);
scp->sc->write_in_progress--;
if (len)
goto outloop;
}
static int
scterm_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
int flag, struct proc *p)
{
term_stat *tcp = scp->ts;
vid_info_t *vi;
switch (cmd) {
case GIO_ATTR: /* get current attributes */
/* FIXME: */
*(int*)data = (tcp->cur_attr >> 8) & 0xff;
return 0;
case CONS_GETINFO: /* get current (virtual) console info */
vi = (vid_info_t *)data;
if (vi->size != sizeof(struct vid_info))
return EINVAL;
vi->mv_norm.fore = tcp->std_color.fg;
vi->mv_norm.back = tcp->std_color.bg;
vi->mv_rev.fore = tcp->rev_color.fg;
vi->mv_rev.back = tcp->rev_color.bg;
/*
* The other fields are filled by the upper routine. XXX
*/
return ENOIOCTL;
}
return ENOIOCTL;
}
static int
scterm_reset(scr_stat *scp, int code)
{
/* FIXME */
return 0;
}
static void
scterm_default_attr(scr_stat *scp, int color, int rev_color)
{
term_stat *tcp = scp->ts;
tcp->dflt_std_color.fg = color & 0x0f;
tcp->dflt_std_color.bg = (color >> 4) & 0x0f;
tcp->dflt_rev_color.fg = rev_color & 0x0f;
tcp->dflt_rev_color.bg = (rev_color >> 4) & 0x0f;
tcp->std_color = tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
}
static void
scterm_clear(scr_stat *scp)
{
term_stat *tcp = scp->ts;
sc_move_cursor(scp, 0, 0);
sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], tcp->cur_attr);
mark_all(scp);
}
static void
scterm_notify(scr_stat *scp, int event)
{
switch (event) {
case SC_TE_NOTIFY_VTSWITCH_IN:
break;
case SC_TE_NOTIFY_VTSWITCH_OUT:
break;
}
}
static int
scterm_input(scr_stat *scp, int c, struct tty *tp)
{
return FALSE;
}
/*
* Calculate hardware attributes word using logical attributes mask and
* hardware colors
*/
/* FIXME */
static int
mask2attr(term_stat *tcp)
{
int attr, mask = tcp->attr_mask;
if (mask & REVERSE_ATTR) {
attr = ((mask & FG_CHANGED) ?
tcp->cur_color.bg : tcp->rev_color.fg) |
(((mask & BG_CHANGED) ?
tcp->cur_color.fg : tcp->rev_color.bg) << 4);
} else
attr = tcp->cur_color.fg | (tcp->cur_color.bg << 4);
/* XXX: underline mapping for Hercules adapter can be better */
if (mask & (BOLD_ATTR | UNDERLINE_ATTR))
attr ^= 0x08;
if (mask & BLINK_ATTR)
attr ^= 0x80;
return (attr << 8);
}
#endif /* SC_DUMB_TERMINAL */
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