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(dosv_refresh_virtual_screen): Do not use negative arguments.

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(dos_direct_output): Fix the offset passed to dosv_refresh_virtual_screen.
(IT_display_cursor): Don't call dosv_refresh_virtual_screen.
(IT_reset_terminal_modes): Don't call dosv_refresh_virtual_screen
when setting cursor.
This commit is contained in:
Eli Zaretskii 1998-04-13 06:42:31 +00:00
parent 9140684333
commit 40437cf549
1 changed files with 5 additions and 7 deletions
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12
src/msdos.c
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@ -325,6 +325,9 @@ dosv_refresh_virtual_screen (int offset, int count)
{
__dpmi_regs regs;
if (offset < 0 || count < 0) /* paranoia; illegal values crash DOS/V */
return;
regs.h.ah = 0xff; /* update relocated screen */
regs.x.es = screen_virtual_segment;
regs.x.di = screen_virtual_offset + offset;
@ -340,8 +343,8 @@ dos_direct_output (y, x, buf, len)
char *buf;
int len;
{
int t = (int) ScreenPrimary + 2 * (x + y * screen_size_X);
int t0 = t;
int t0 = 2 * (x + y * screen_size_X);
int t = t0 + (int) ScreenPrimary;
int l0 = len;
#if (__DJGPP__ < 2)
@ -741,8 +744,6 @@ IT_display_cursor (int on)
ScreenSetCursor (-1, -1);
cursor_cleared = 1;
}
if (screen_virtual_segment)
dosv_refresh_virtual_screen (2 * (current_pos_X + screen_size_X * current_pos_Y), 1);
}
/* Emacs calls cursor-movement functions a lot when it updates the
@ -975,9 +976,6 @@ IT_reset_terminal_modes (void)
cursor_pos_Y = startup_pos_Y;
ScreenSetCursor (cursor_pos_Y, cursor_pos_X);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (2*(cursor_pos_X+cursor_pos_Y*screen_size_X),
1);
xfree (startup_screen_buffer);
term_setup_done = 0;