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fixed a bug in EMM_PartialPageMapping

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1292
This commit is contained in:
Ulf Wohlers 2003-10-04 12:38:34 +00:00
parent 16577268af
commit 004287340e
1 changed files with 4 additions and 3 deletions
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7
src/ints/ems.cpp
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@ -32,7 +32,7 @@
#define EMM_PAGEFRAME 0xE000
#define EMM_PAGEFRAME4K ((EMM_PAGEFRAME*16)/4096)
#define EMM_MAX_HANDLES 50 /* 255 Max */
#define EMM_MAX_HANDLES 100 /* 255 Max */
#define EMM_PAGE_SIZE (16*1024U)
#define EMM_MAX_PAGES (32 * 1024 / 16 )
#define EMM_MAX_PHYS 4 /* 4 16kb pages in pageframe */
@ -241,7 +241,8 @@ static Bit8u EMM_PartialPageMapping(void) {
mem_writew(data,count);data+=2;
for (;count>0;count--) {
Bit16u page=mem_readw(list);list+=2;
if (page>=EMM_MAX_PHYS) return EMM_ILL_PHYS;
if ((page<EMM_PAGEFRAME) || (page>=EMM_PAGEFRAME+0x1000)) return EMM_ILL_PHYS;
page = (page-EMM_PAGEFRAME) / (EMM_PAGE_SIZE>>4);
mem_writew(data,page);data+=2;
MEM_BlockWrite(data,&emm_mappings[page],sizeof(EMM_Mapping));
data+=sizeof(EMM_Mapping);
@ -348,7 +349,7 @@ static Bit8u MemoryRegion(void) {
return EMM_FUNC_NOSUP;
}
LoadMoveRegion(SegPhys(ds)+reg_si,region);
/* Parse the region for information */
/* Parse the region for information */
PhysPt src_mem,dest_mem;
MemHandle src_handle,dest_handle;
Bitu src_off,dest_off;Bitu src_remain,dest_remain;