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Fix a potential sign extension bug on 8-bit chars.

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Outputting a backspace isn't supposed to be destructive..  It isn't on
most terminals, nor on the standard bios output (vs. TERM_EMU mode)
This commit is contained in:
Peter Wemm 1999-01-04 18:45:08 +00:00
parent 4cd1140888
commit e423230b0d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=42291
1 changed files with 3 additions and 3 deletions
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6
sys/boot/i386/libi386/vidconsole.c
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@ -26,7 +26,7 @@
*
* From Id: probe_keyboard.c,v 1.13 1997/06/09 05:10:55 bde Exp
*
* $Id: vidconsole.c,v 1.9 1998/12/22 11:51:25 abial Exp $
* $Id: vidconsole.c,v 1.10 1998/12/31 13:44:04 abial Exp $
*/
#include <stand.h>
@ -124,7 +124,7 @@ vidc_biosputchar(int c)
{
v86.ctl = 0;
v86.addr = 0x10;
v86.eax = 0xe00 | c;
v86.eax = 0xe00 | (c & 0xff);
v86.ebx = 0x7;
v86int();
}
@ -164,7 +164,7 @@ vidc_rawputchar(int c)
if(curx>0) {
curx--;
curs_move(curx,cury);
write_char(' ',fg_c,bg_c);
/* write_char(' ',fg_c,bg_c); XXX destructive(!) */
return;
}
return;