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fixed buf if extrabytes are zero.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@726
This commit is contained in:
Ulf Wohlers 2003-03-07 11:31:13 +00:00
parent 542d0739c9
commit 3cff24c4a7
1 changed files with 6 additions and 2 deletions
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8
src/dos/dos_execute.cpp
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@ -240,8 +240,12 @@ bool DOS_Execute(char * name,PhysPt block_pt,Bit8u flags) {
if ((head.signature!=MAGIC1) && (head.signature!=MAGIC2)) iscom=true;
else {
headersize=head.headersize*16;
imagesize=(head.pages-1)*512-headersize;
if (head.extrabytes) imagesize += head.extrabytes % 512;
if (head.extrabytes) {
imagesize = (head.pages-1)*512-headersize;
imagesize += head.extrabytes % 512;
} else
imagesize = head.pages*512-headersize;
// always load st least 512 Bytes (dos cache/dos bug?)
if (imagesize+headersize<512) imagesize = 512-headersize;
}