-/* $Id: display.c,v 1.1 2001/08/21 20:18:26 chorns Exp $
+/*
+ * ReactOS kernel
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002 ReactOS Team
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/* $Id: display.c,v 1.2 2002/01/10 01:01:27 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/hal/x86/display.c
* PURPOSE: Blue screen display
- * PROGRAMMER: Eric Kohl (ekohl@abo.rhein-zeitung.de)
+ * PROGRAMMER: Eric Kohl (ekohl@rz-online.de)
* UPDATE HISTORY:
* Created 08/10/99
*/
static VOID
HalClearDisplay (VOID)
{
- WORD *ptr = (WORD*)VideoBuffer;
- ULONG i;
+ WORD *ptr = (WORD*)VideoBuffer;
+ ULONG i;
- for (i = 0; i < SizeX * SizeY; i++, ptr++)
- *ptr = ((CHAR_ATTRIBUTE << 8) + ' ');
+ for (i = 0; i < SizeX * SizeY; i++, ptr++)
+ *ptr = ((CHAR_ATTRIBUTE << 8) + ' ');
- CursorX = 0;
- CursorY = 0;
+ CursorX = 0;
+ CursorY = 0;
}
VOID
HalScrollDisplay (VOID)
{
- WORD *ptr;
- int i;
-
- ptr = VideoBuffer + SizeX;
- RtlMoveMemory (VideoBuffer,
- ptr,
- SizeX * (SizeY - 1) * 2);
-
- ptr = VideoBuffer + (SizeX * (SizeY - 1));
- for (i = 0; i < SizeX; i++, ptr++)
- {
- *ptr = (CHAR_ATTRIBUTE << 8) + ' ';
- }
+ WORD *ptr;
+ int i;
+
+ ptr = VideoBuffer + SizeX;
+ RtlMoveMemory(VideoBuffer,
+ ptr,
+ SizeX * (SizeY - 1) * 2);
+
+ ptr = VideoBuffer + (SizeX * (SizeY - 1));
+ for (i = 0; i < SizeX; i++, ptr++)
+ {
+ *ptr = (CHAR_ATTRIBUTE << 8) + ' ';
+ }
}
static VOID
HalPutCharacter (CHAR Character)
{
- WORD *ptr;
+ WORD *ptr;
- ptr = VideoBuffer + ((CursorY * SizeX) + CursorX);
- *ptr = (CHAR_ATTRIBUTE << 8) + Character;
+ ptr = VideoBuffer + ((CursorY * SizeX) + CursorX);
+ *ptr = (CHAR_ATTRIBUTE << 8) + Character;
}
* InitParameters = Parameters setup by the boot loader
*/
{
- if (DisplayInitialized == FALSE)
+ if (DisplayInitialized == FALSE)
{
- ULONG ScanLines;
- ULONG Data;
-
- VideoBuffer = (WORD *)(0xd0000000 + 0xb8000);
-// VideoBuffer = HalMapPhysicalMemory (0xb8000, 2);
-
- /* Set cursor position */
-// CursorX = LoaderBlock->cursorx;
-// CursorY = LoaderBlock->cursory;
- CursorX = 0;
- CursorY = 0;
-
- /* read screen size from the crtc */
- /* FIXME: screen size should be read from the boot parameters */
- WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_COLUMNS);
- SizeX = READ_PORT_UCHAR((PUCHAR)CRTC_DATA) + 1;
- WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_ROWS);
- SizeY = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
- WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_OVERFLOW);
- Data = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
- SizeY |= (((Data & 0x02) << 7) | ((Data & 0x40) << 3));
- SizeY++;
- WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_SCANLINES);
- ScanLines = (READ_PORT_UCHAR((PUCHAR)CRTC_DATA) & 0x1F) + 1;
- SizeY = SizeY / ScanLines;
+ ULONG ScanLines;
+ ULONG Data;
+
+ VideoBuffer = (WORD *)(0xd0000000 + 0xb8000);
+// VideoBuffer = HalMapPhysicalMemory (0xb8000, 2);
+
+ /* Set cursor position */
+// CursorX = LoaderBlock->cursorx;
+// CursorY = LoaderBlock->cursory;
+ CursorX = 0;
+ CursorY = 0;
+
+ /* read screen size from the crtc */
+ /* FIXME: screen size should be read from the boot parameters */
+ WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_COLUMNS);
+ SizeX = READ_PORT_UCHAR((PUCHAR)CRTC_DATA) + 1;
+ WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_ROWS);
+ SizeY = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
+ WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_OVERFLOW);
+ Data = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
+ SizeY |= (((Data & 0x02) << 7) | ((Data & 0x40) << 3));
+ SizeY++;
+ WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_SCANLINES);
+ ScanLines = (READ_PORT_UCHAR((PUCHAR)CRTC_DATA) & 0x1F) + 1;
+ SizeY = SizeY / ScanLines;
#ifdef BOCHS_30ROWS
-SizeY=30;
+ SizeY=30;
#endif
- HalClearDisplay ();
+ HalClearDisplay();
- DisplayInitialized = TRUE;
+ DisplayInitialized = TRUE;
}
}
VOID
-HalResetDisplay (VOID)
+HalResetDisplay(VOID)
/*
* FUNCTION: Reset the display
* ARGUMENTS:
* None
*/
{
- if (HalResetDisplayParameters == NULL)
- return;
+ if (HalResetDisplayParameters == NULL)
+ return;
- if (HalOwnsDisplay == TRUE)
- return;
+ if (HalOwnsDisplay == TRUE)
+ return;
- if (HalResetDisplayParameters(SizeX, SizeY) == TRUE)
+ if (HalResetDisplayParameters(SizeX, SizeY) == TRUE)
{
- HalOwnsDisplay = TRUE;
- HalClearDisplay ();
+ HalOwnsDisplay = TRUE;
+ HalClearDisplay();
}
}
/* PUBLIC FUNCTIONS *********************************************************/
-VOID
-STDCALL
-HalAcquireDisplayOwnership (
- IN PHAL_RESET_DISPLAY_PARAMETERS ResetDisplayParameters
- )
+VOID STDCALL
+HalAcquireDisplayOwnership(IN PHAL_RESET_DISPLAY_PARAMETERS ResetDisplayParameters)
/*
* FUNCTION:
* ARGUMENTS:
* reset routine.
*/
{
- HalOwnsDisplay = FALSE;
- HalResetDisplayParameters = ResetDisplayParameters;
+ HalOwnsDisplay = FALSE;
+ HalResetDisplayParameters = ResetDisplayParameters;
}
VOID STDCALL
-HalDisplayString (IN PCH String)
+HalDisplayString(IN PCH String)
/*
* FUNCTION: Switches the screen to HAL console mode (BSOD) if not there
* already and displays a string
while (*pch != 0)
{
if (*pch == '\n')
- {
+ {
CursorY++;
CursorX = 0;
- }
- else
- {
+ }
+ else if (*pch != '\r')
+ {
HalPutCharacter (*pch);
CursorX++;
if (CursorX >= SizeX)
- {
+ {
CursorY++;
CursorX = 0;
- }
- }
-
+ }
+ }
+
if (CursorY >= SizeY)
- {
+ {
HalScrollDisplay ();
CursorY = SizeY - 1;
- }
-
+ }
+
pch++;
}
}
-VOID
-STDCALL
-HalQueryDisplayParameters (
- PULONG DispSizeX,
- PULONG DispSizeY,
- PULONG CursorPosX,
- PULONG CursorPosY
- )
+VOID STDCALL
+HalQueryDisplayParameters(OUT PULONG DispSizeX,
+ OUT PULONG DispSizeY,
+ OUT PULONG CursorPosX,
+ OUT PULONG CursorPosY)
{
- if (DispSizeX)
- *DispSizeX = SizeX;
- if (DispSizeY)
- *DispSizeY = SizeY;
- if (CursorPosX)
- *CursorPosX = CursorX;
- if (CursorPosY)
- *CursorPosY = CursorY;
+ if (DispSizeX)
+ *DispSizeX = SizeX;
+ if (DispSizeY)
+ *DispSizeY = SizeY;
+ if (CursorPosX)
+ *CursorPosX = CursorX;
+ if (CursorPosY)
+ *CursorPosY = CursorY;
}
-VOID
-STDCALL
-HalSetDisplayParameters (
- ULONG CursorPosX,
- ULONG CursorPosY
- )
+VOID STDCALL
+HalSetDisplayParameters(IN ULONG CursorPosX,
+ IN ULONG CursorPosY)
{
- CursorX = (CursorPosX < SizeX) ? CursorPosX : SizeX - 1;
- CursorY = (CursorPosY < SizeY) ? CursorPosY : SizeY - 1;
+ CursorX = (CursorPosX < SizeX) ? CursorPosX : SizeX - 1;
+ CursorY = (CursorPosY < SizeY) ? CursorPosY : SizeY - 1;
}
/* EOF */
projects / reactos.git / commitdiff