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TempleOSCD_150216.ISO

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Terry A. Davis authored and minexew committed 2018-09-08 21:46:15 +02:00
1 parent 64f679eeb9
commit 401601816c
531 files changed
+23341 -22071
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Demo/Lectures/PageTableEntries1.CPP
+7 -7
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@@ -5,12 +5,12 @@ TempleOS keeps a cached copy of VGA memory in
$LK,"gr.screen_image",A="MN:CGrGlbls"$. See $LK,"GrUpdateVGAGraphics",A="MN:GrUpdateVGAGraphics"$.
TempleOS used 4096 size pages for memory below addr 2 Meg
and 2 Meg pages above two Meg. See $LK,"MemPageSize",A="MN:MemPageSize"$() and $LK,"INIT_MEMORY",A="FF:::/Kernel/Mem1a.CPP,SYS_INIT_MEM"$.
and 2 Meg pages above two Meg. See $LK,"MemPageSize",A="MN:MemPageSize"$() and $LK,"INIT_MEMORY",A="FF:::/Kernel/MemA.CPP,SYS_INIT_MEM"$.
*/
U0 PageTableDemo1()
{
I64 *pte=MemPageTable(VGA_GRAPHIC_MEM_BASE),p0,p1;
I64 *pte=MemPageTable(VGAM_GRAPHICS),p0,p1;
"Page table entries for VGA screen memory\n";
DocD(pte);
PressAKey;
@@ -19,8 +19,8 @@ U0 PageTableDemo1()
p1=pte[1];
pte[0]=p1;
pte[1]=p0;
InvlPg(VGA_GRAPHIC_MEM_BASE); //Invalidate translation look aside buffer (TLB).
InvlPg(VGA_GRAPHIC_MEM_BASE+0x1000);
InvlPg(VGAM_GRAPHICS); //Invalidate translation look aside buffer (TLB).
InvlPg(VGAM_GRAPHICS+0x1000);
//Use this if you wish to change
//the page table reg.
@@ -34,8 +34,8 @@ U0 PageTableDemo1()
pte[0]=p0;
pte[1]=p1;
InvlPg(VGA_GRAPHIC_MEM_BASE);
InvlPg(VGA_GRAPHIC_MEM_BASE+0x1000);
InvlPg(VGAM_GRAPHICS);
InvlPg(VGAM_GRAPHICS+0x1000);
//<CTRL-ALT-f> will flush screen VGA cache.
VGAFlush;
@@ -43,6 +43,6 @@ U0 PageTableDemo1()
PageTableDemo1;
//See $LK,"MemBlks2MegAlloc",A="MN:MemBlks2MegAlloc"$(), $LK,"MemBlks2MegFree",A="MN:MemBlks2MegFree"$() for page aligned allocations.
//See $LK,"Mem2MegAlloc",A="MN:Mem2MegAlloc"$(), $LK,"Mem2MegFree",A="MN:Mem2MegFree"$() for page aligned allocations.
//See $LK,"CBlkPool",A="MN:CBlkPool"$, $LK,"CHeapCtrl",A="MN:CHeapCtrl"$, $LK,"sys_code_bp",A="MN:sys_code_bp"$ and $LK,"sys_data_bp",A="MN:sys_data_bp"$.
//See $LK,"Memory Overview",A="FI:::/Doc/MemOverview.TXT"$ and $LK,"Memory Routines",A="HI:Memory"$.