void
sc_vtb_clear(sc_vtb_t *vtb, int c, int attr)
{
vm_offset_t p = vtb_pointer(vtb, 0);
if (vtb->vtb_type == VTB_FRAMEBUFFER) {
fillw_io(c, p, vtb->vtb_size);
fillw_io(at2pc98(attr), p + ATTR_OFFSET_FB, vtb->vtb_size);
} else {
fillw(c, (void *)p, vtb->vtb_size);
fillw(at2pc98(attr), (void *)(p + attr_offset(vtb)),
vtb->vtb_size);
}
}
/* Write character and attribute at cursor position. */
void
write_char(int c, int fgcol, int bgcol)
{
*crtat = (c == 0x5c ? 0xfc : (c & 0xff));
*(crtat + 0x1000) = at2pc98(fgcol, bgcol);
}
void
sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr)
{
vm_offset_t p;
if (at + count > vtb->vtb_size)
count = vtb->vtb_size - at;
p = vtb_pointer(vtb, at);
if (vtb->vtb_type == VTB_FRAMEBUFFER) {
fillw_io(c, p, count);
fillw_io(at2pc98(attr), p + ATTR_OFFSET_FB, count);
} else {
fillw(c, (void *)p, count);
fillw(at2pc98(attr), (void *)(p + attr_offset(vtb)), count);
}
}
/* Clear display from current position to end of screen */
void
CD(void)
{
int pos;
get_pos();
for (pos = 0; crtat + pos <= Crtat + col * row; pos++) {
*(crtat + pos) = ' ';
*(crtat + pos + 0x1000) = at2pc98(fg_c, bg_c);
}
end_term();
}
/* Scroll up the whole window by a number of rows. If rows==0,
* clear the window. fg and bg are attributes for the new lines
* inserted in the window.
*/
void
scroll_up(int rows, int fgcol, int bgcol)
{
unsigned short *cp;
int i;
if (rows == 0)
rows = 25;
cp = Crtat;
for (i = rows; i < row; i++) {
bcopy((void *)(cp + col), (void *)cp, col * 2);
cp += col;
}
for (i = 0; i < col; i++) {
*(cp + 0x1000) = at2pc98(fgcol, bgcol);
*cp++ = ' ';
}
}
static void
vidc_biosputchar(int c)
{
unsigned short *cp;
int i, pos;
#ifdef TERM_EMU
*crtat = (c == 0x5c ? 0xfc : c);
*(crtat + 0x1000) = at2pc98(fg, bg);
#else
switch(c) {
case '\b':
crtat--;
break;
case '\r':
crtat -= (crtat - Crtat) % col;
break;
case '\n':
crtat += col;
break;
default:
*crtat = (c == 0x5c ? 0xfc : c);
*(crtat++ + 0x1000) = 0xe1;
break;
}
if (crtat >= Crtat + col * row) {
cp = Crtat;
for (i = 1; i < row; i++) {
bcopy((void *)(cp + col), (void *)cp, col * 2);
cp += col;
}
for (i = 0; i < col; i++) {
*cp++ = ' ';
}
crtat -= col;
}
pos = crtat - Crtat;
while ((inb(0x60) & 0x04) == 0) {}
outb(0x62, 0x49);
outb(0x60, pos & 0xff);
outb(0x60, pos >> 8);
#endif
}