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TempleOSCD_140715.ISO

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Terry A. Davis authored and minexew committed 2018-09-08 21:46:09 +02:00
1 parent 7ef616a20e
commit 64f679eeb9
1095 files changed
+24814 -221011
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Demo/Lectures/PageTableEntries1.CPP
+11 -11
View File
@@ -1,12 +1,12 @@
//What's funner than page tables for programmers to play with!!
/*What's funner than page tables for programmers to play with!!
//This changes a page table entry for VGA graphics memory.
//TempleOS keeps a cached copy of VGA memory in
//$LK,"gr_screen_image",A="MN:gr_screen_image"$. 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 $LK,"INIT_MEMORY",A="FF:::/Kernel/Mem1a.CPP,SYS_INIT_MEM"$.
This changes a page table entry for VGA graphics memory.
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 $LK,"INIT_MEMORY",A="FF:::/Kernel/Mem1a.CPP,SYS_INIT_MEM"$.
*/
U0 PageTableDemo1()
{
@@ -28,7 +28,7 @@ U0 PageTableDemo1()
// SetRAX(0x100000+0x1000*(MEM_NUM_PML1+MEM_NUM_PML2+MEM_NUM_PML3));
// MOV_CR3_EAX
//<CTRL-ALT-F> will flush screen VGA cache.
//<CTRL-ALT-f> will flush screen VGA cache.
VGAFlush;
PressAKey;
@@ -37,12 +37,12 @@ U0 PageTableDemo1()
InvlPg(VGA_GRAPHIC_MEM_BASE);
InvlPg(VGA_GRAPHIC_MEM_BASE+0x1000);
//<CTRL-ALT-F> will flush screen VGA cache.
//<CTRL-ALT-f> will flush screen VGA cache.
VGAFlush;
}
PageTableDemo1;
//See $LK,"MemBlks2MegAlloc",A="MN:MemBlks2MegAlloc"$(), $LK,"MemBlks2MegFree",A="MN:MemBlks2MegFree"$() for page aligned allocations.
//See $LK,"CBlkPool",A="MN:CBlkPool"$, $LK,"CHeapCtrl",A="MN:CHeapCtrl"$, $LK,"sys_code_bp",A="MN:sys_code_bp"$, $LK,"sys_data_bp",A="MN:sys_data_bp"$.
//See $LK,"Memory",A="HI:Memory"$
//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 $LK,"Memory Routines",A="HI:Memory"$.