Support video and memory detection on the Xbox

[reactos.git] / freeldr / freeldr / arch / i386 / pccons.c

diff --git a/freeldr/freeldr/arch/i386/pccons.c b/freeldr/freeldr/arch/i386/pccons.c
new file mode 100644 (file)
index 0000000..a362dcb
--- /dev/null
+++ b/freeldr/freeldr/arch/i386/pccons.c
@@ -0,0 +1,98 @@
+/* $Id: pccons.c,v 1.1 2004/11/08 22:02:47 gvg Exp $
+ *
+ *  FreeLoader
+ *
+ *  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.
+ */
+
+#include "freeldr.h"
+#include "mm.h"
+#include "arch.h"
+#include "debug.h"
+#include "machpc.h"
+#include "rtl.h"
+
+#define TEXTMODE_BUFFER      0xb8000
+#define TEXTMODE_BUFFER_SIZE 0x8000
+
+#define TEXT_COLS  80
+#define TEXT_LINES 25
+
+VOID
+PcConsClearScreenAttr(U8 Attr)
+{
+  U16 AttrChar;
+  U16 *BufPtr;
+
+  AttrChar = ((U16) Attr << 8) | ' ';
+  for (BufPtr = (U16 *) TEXTMODE_BUFFER;
+       BufPtr < (U16 *) (TEXTMODE_BUFFER + TEXTMODE_BUFFER_SIZE);
+       BufPtr++)
+    {
+      *BufPtr = AttrChar;
+    }
+}
+
+VOID
+PcConsPutChar(int Ch)
+{
+  REGS Regs;
+
+  /* If we are displaying a CR '\n' then do a LF also */
+  if ('\n' == Ch)
+    {
+      /* Display the LF */
+      PcConsPutChar('\r');
+    }
+
+  /* If we are displaying a TAB '\t' then display 8 spaces ' ' */
+  if ('\t' == Ch)
+    {
+      /* Display the 8 spaces ' ' */
+      PcConsPutChar(' ');
+      PcConsPutChar(' ');
+      PcConsPutChar(' ');
+      PcConsPutChar(' ');
+      PcConsPutChar(' ');
+      PcConsPutChar(' ');
+      PcConsPutChar(' ');
+      PcConsPutChar(' ');
+      return;
+    }
+
+  /* Int 10h AH=0Eh
+   * VIDEO - TELETYPE OUTPUT
+   *
+   * AH = 0Eh
+   * AL = character to write
+   * BH = page number
+   * BL = foreground color (graphics modes only)
+   */
+  Regs.b.ah = 0x0E;
+  Regs.b.al = Ch;
+  Regs.w.bx = 1;
+  Int386(0x10, &Regs, &Regs);
+}
+
+VOID
+PcConsPutCharAttrAtLoc(int Ch, U8 Attr, unsigned X, unsigned Y)
+{
+  U16 *BufPtr;
+
+  BufPtr = (U16 *) (TEXTMODE_BUFFER + (Y * TEXT_COLS + X) * 2);
+  *BufPtr = ((U16) Attr << 8) | (Ch & 0xff);
+}
+
+/* EOF */