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Support for the updated list of lists class, now supporting a fake dos file table.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@364
This commit is contained in:
Sjoerd van der Berg 2002-10-19 17:29:25 +00:00
parent 41a4c6ba3f
commit 5f3e49b03f
1 changed files with 16 additions and 11 deletions
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27
src/dos/dos_tables.cpp
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@ -20,25 +20,18 @@
#include "mem.h"
#include "dos_inc.h"
#if defined (_MSC_VER)
#pragma pack(1)
#endif
struct DOS_TableCase {
Bit16u size;
Bit8u chars[256];
}
#if defined (_MSC_VER)
;
#pragma pack()
#else
__attribute__ ((packed));
#endif
GCC_ATTRIBUTE (packed);
#pragma pack ()
RealPt DOS_TableUpCase;
RealPt DOS_TableLowCase;
static Bit16u dos_memseg=0xd000;
static Bit16u dos_memseg;
Bit16u DOS_GetMemory(Bit16u pages) {
if (pages+dos_memseg>=0xe000) {
E_Exit("DOS:Not enough memory for internal tables");
@ -50,9 +43,21 @@ Bit16u DOS_GetMemory(Bit16u pages) {
void DOS_SetupTables(void) {
dos_memseg=0xd000;
Bit16u seg;Bitu i;
dos.tables.indosflag=RealMake(DOS_GetMemory(1),0);
dos.tables.mediaid=RealMake(DOS_GetMemory(2),0);
dos.tables.tempdta=RealMake(DOS_GetMemory(4),0);
for (i=0;i<DOS_DRIVES;i++) mem_writeb(Real2Phys(dos.tables.mediaid)+i,0);
mem_writeb(Real2Phys(dos.tables.indosflag),0);
};
/* Create the DOS Info Block */
dos_infoblock.SetLocation(DOS_GetMemory(6));
/* Create a fake SFT, so programs think there are 100 file handles */
seg=DOS_GetMemory(1);
real_writed(seg,0,0xffffffff); //Last File Table
real_writew(seg,4,100); //File Table supports 100 files
dos_infoblock.SetfirstFileTable(RealMake(seg,0));
}