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Zero pad the correct buffer. Fixes cyrus chess.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2833
This commit is contained in:
Peter Veenstra 2007-03-23 08:27:39 +00:00
parent bd718ada6a
commit b6e72ef8e1
1 changed files with 8 additions and 5 deletions
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13
src/dos/dos_files.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: dos_files.cpp,v 1.81 2007-01-08 21:20:23 qbix79 Exp $ */
/* $Id: dos_files.cpp,v 1.82 2007-03-23 08:27:39 qbix79 Exp $ */
#include <string.h>
#include <stdlib.h>
@ -878,10 +878,9 @@ Bit8u DOS_FCBRead(Bit16u seg,Bit16u offset,Bit16u recno) {
Bit16u toread=rec_size;
if (!DOS_ReadFile(fhandle,dos_copybuf,&toread)) return FCB_READ_NODATA;
if (toread==0) return FCB_READ_NODATA;
if (toread<rec_size) {
PhysPt fill=Real2Phys(dos.dta())+toread;
Bitu i=rec_size-toread;
for (;i>0;i--) mem_writeb(fill++,0);
if (toread < rec_size) { //Zero pad copybuffer to rec_size
Bitu i = toread;
while(i < rec_size) dos_copybuf[i++] = 0;
}
MEM_BlockWrite(Real2Phys(dos.dta())+recno*rec_size,dos_copybuf,rec_size);
if (++cur_rec>127) { cur_block++;cur_rec=0; }
@ -927,6 +926,10 @@ Bit8u DOS_FCBRandomRead(Bit16u seg,Bit16u offset,Bit16u numRec,bool restore) {
* random read updates old block and old record to reflect the random data
* before the read!!!!!!!!! and the random data is not updated! (user must do this)
* Random block read updates these fields to reflect the state after the read!
*/
/* BUG: numRec should return the amount of records read!
* Not implemented yet as I'm unsure how to count on error states (partial/failed)
*/
DOS_FCB fcb(seg,offset);