- Map only the vga frame buffer for the hal to write debug messages
and map it higher up in the kernel address space so more space is available
for the nonpaged and paged pools.

reactos/hal/halx86

diff -u -r1.13 -r1.14
--- display.c	18 Jan 2004 22:35:26 -0000	1.13
+++ display.c	16 Mar 2004 22:45:55 -0000	1.14
@@ -16,7 +16,7 @@

  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

-/* $Id: display.c,v 1.13 2004/01/18 22:35:26 gdalsnes Exp $

+/* $Id: display.c,v 1.14 2004/03/16 22:45:55 dwelch Exp $

  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel

@@ -577,9 +577,8 @@

       ULONG ScanLines;
       ULONG Data;
 

-      VideoBuffer = (WORD *)(0xd0000000 + 0xb8000);
-      GraphVideoBuffer = (PUCHAR)(0xd0000000 + 0xa0000);
-//      VideoBuffer = HalMapPhysicalMemory (0xb8000, 2);

+      VideoBuffer = (WORD *)(0xff3b8000);
+      GraphVideoBuffer = (PUCHAR)(0xff3a0000);

 
       /* Set cursor position */
 //      CursorX = LoaderBlock->cursorx;

reactos/ntoskrnl/kd

diff -u -r1.3 -r1.4
--- mda.c	8 Sep 2002 10:23:27 -0000	1.3
+++ mda.c	16 Mar 2004 22:45:56 -0000	1.4
@@ -16,7 +16,7 @@

  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

-/* $Id: mda.c,v 1.3 2002/09/08 10:23:27 chorns Exp $

+/* $Id: mda.c,v 1.4 2004/03/16 22:45:56 dwelch Exp $

  *
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/kd/mda.c

@@ -77,7 +77,7 @@

   MdaStatusPort = 0x3ba;
   MdaGfxPort = 0x3bf;
 

-  VideoBuffer = (PUSHORT)(0xd0000000 + 0xb0000);

+  VideoBuffer = (PUSHORT)(0xff3b0000);

 
   MdaCursorX = MdaCursorY = 0;
 }

reactos/ntoskrnl/ke/i386

diff -u -r1.21 -r1.22
--- multiboot.S	14 Sep 2003 09:11:14 -0000	1.21
+++ multiboot.S	16 Mar 2004 22:45:56 -0000	1.22
@@ -139,7 +139,6 @@

 	movl	$(V2P(kernel_pagetable+30*4096) + 0x7), 0xC78(%esi)
 	movl	$(V2P(kernel_pagetable+31*4096) + 0x7), 0xC7c(%esi)
 

-	movl	$(V2P(lowmem_pagetable) + 0x7), 0xD00(%esi)

 	movl	$(V2P(startup_pagedirectory) + 0x7), 0xF00(%esi) 
 #ifdef MP
 	movl	$(V2P(apic_pagetable) + 0x7), 0xFEC(%esi)

@@ -200,6 +199,18 @@

 	movl	$0x1007, %eax
 	movl	%eax, (%esi, %edi)
 

+	/*
+	 * Initialize a part of the same pagetable to map the vga frame buffer.
+	 */
+	movl	$0xa0007, %eax
+	movl	$0x20, %ecx
+	movl	$0xE80, %edi
+.l9:	
+	movl	%eax, (%esi, %edi)
+	add	$4, %edi
+	add	$0x1000, %eax
+	loop	.l9
+

 #ifdef MP
 
 .m1:

reactos/ntoskrnl/mm

diff -u -r1.61 -r1.62
--- mminit.c	16 Mar 2004 21:13:15 -0000	1.61
+++ mminit.c	16 Mar 2004 22:45:56 -0000	1.62
@@ -1,4 +1,4 @@

-/* $Id: mminit.c,v 1.61 2004/03/16 21:13:15 dwelch Exp $

+/* $Id: mminit.c,v 1.62 2004/03/16 22:45:56 dwelch Exp $

  *
  * COPYRIGHT:   See COPYING in the top directory
  * PROJECT:     ReactOS kernel 

@@ -48,7 +48,7 @@

 static MEMORY_AREA* kernel_param_desc = NULL;
 static MEMORY_AREA* kernel_pool_desc = NULL;
 static MEMORY_AREA* kernel_shared_data_desc = NULL;

-static MEMORY_AREA* kernel_mapped_low_mem_desc = NULL; 

+static MEMORY_AREA* kernel_mapped_vga_framebuffer_desc = NULL; 

 static MEMORY_AREA* MiKernelMapDescriptor = NULL;
 static MEMORY_AREA* MiPagedPoolDescriptor = NULL;
 

@@ -146,14 +146,14 @@

 		      FALSE,
 		      BoundaryAddressMultiple);
 

-   BaseAddress = (PVOID)0xd0000000;

+   BaseAddress = (PVOID)0xFF3A0000;

    MmCreateMemoryArea(NULL,
 		      MmGetKernelAddressSpace(),
 		      MEMORY_AREA_SYSTEM,
 		      &BaseAddress,

-		      0x100000,

+		      0x20000,

 		      0,

-		      &kernel_mapped_low_mem_desc,

+		      &kernel_mapped_vga_framebuffer_desc,

 		      FALSE,
 		      FALSE,
 		      BoundaryAddressMultiple);