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some safety code for games writing to con in non-textmode.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2205
This commit is contained in:
Peter Veenstra 2005-05-03 15:27:29 +00:00
parent 640e9475b1
commit 8008c426fb
1 changed files with 21 additions and 1 deletions
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22
src/ints/int10_char.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: int10_char.cpp,v 1.32 2005-03-01 11:13:29 qbix79 Exp $ */
/* $Id: int10_char.cpp,v 1.33 2005-05-03 15:27:29 qbix79 Exp $ */
/* Character displaying moving functions */
@ -424,6 +424,26 @@ void WriteChar(Bit16u col,Bit16u row,Bit8u page,Bit8u chr,Bit8u attr,bool useatt
fontdata=Real2Phys(RealGetVec(0x43))+chr*cheight;
break;
}
if(GCC_UNLIKELY(!useattr)) { //Set attribute(color) to a sensible value
static bool warned_use = false;
if(GCC_UNLIKELY(!warned_use)){
LOG(LOG_INT10,LOG_ERROR)("writechar used without attribute in non-textmode");
warned_use = true;
}
switch(CurMode->type) {
case M_CGA4:
case M_CGA2:
attr = 0x1;
break;
case M_TANDY16:
case M_EGA16:
default:
attr = 0xf;
break;
}
}
x=8*col;
y=cheight*row;Bit8u xor_mask=(CurMode->type == M_VGA) ? 0x0 : 0x80;
//TODO Check for out of bounds