Console Fixes & BIOS Interfacing

- Removed some garbage text from startup
- Interface to the BDA added.
- Console Cursor updates added.

git-svn-id: https://spexeah.com:8443/svn/Asuro@13 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c

src/bda.pas

@@ -0,0 +1,30 @@
+unit bda;
+
+interface
+
+type
+     TBDA = bitpacked record
+          COM1            : WORD;
+          COM2            : WORD;
+          COM3            : WORD;
+          COM4            : WORD;
+          LPT1            : WORD;
+          LPT2            : WORD;
+          LPT3            : WORD;
+          EBDA            : WORD;
+          Hardware_Flags  : WORD;
+          Keyboard_Flags  : WORD;
+          Keyboard_Buffer : ARRAY[0..31] OF BYTE;
+          Display_Mode    : BYTE;
+          BaseIO          : WORD;
+          Ticks           : WORD;
+          HDD_Count       : BYTE;
+          Keyboard_Start  : WORD;
+          Keyboard_End    : WORD;
+          Keyboard_State  : Byte;
+     end;
+     PBDA = ^TBDA;
+
+implementation
+
+end.

src/console.pas

@@ -2,6 +2,9 @@ unit console;
 
 interface
 
+uses
+     util, bda;
+
 type
     TColor = ( Black   = $0,
                Blue    = $1,
@@ -243,15 +246,18 @@ begin
 end;
 
 procedure _console_update_cursor(); [public, alias: '_console_update_cursor'];
-begin
-     {asm
-        MOV AH, $02
-        MOV BH, $00
-        MOV DH, Console_Cursor.Y
-        MOV DL, Console_Cursor.X
-        INT $10
-     end; }
+var
+   pos : word;
+   b   : byte;
    
+begin
+     pos:= (Console_Cursor.Y * 80) + Console_Cursor.X;
+     outb($3D4, $0F);
+     b:= pos and $00FF;
+     outb($3D5, b);
+     outb($3D4, $0E);
+     b:= pos shr 8;
+     outb($3D5, b);
 end;
 
 procedure _console_increment_x(); [public, alias: '_console_increment_x'];

src/kernel.pas

@@ -4,14 +4,19 @@ interface
  
 uses
         multiboot,
-        console;
+        console,
+        bda;
  
 procedure kmain(mbinfo: Pmultiboot_info_t; mbmagic: DWORD); stdcall;
  
 implementation
  
 procedure kmain(mbinfo: Pmultiboot_info_t; mbmagic: DWORD); stdcall; [public, alias: 'kmain'];
+var
+   _bda : PBDA;
+   
 begin
+     _bda:= PBDA($0400);
      console_init();
      console_writestringln('Booting Asuro...');
      if (mbmagic <> MULTIBOOT_BOOTLOADER_MAGIC) then begin
@@ -23,8 +28,11 @@ begin
            hlt
         end;
      end;
+     console_clear();
      console_setdefaultattribute(console_combinecolors(Green, Black));
      console_writestringln('Asuro Booted Correctly!');
+     console_writestringln('');
+     console_setdefaultattribute(console_combinecolors(White, Black));
      console_writestring('Lower Memory = ');
      console_writeint(mbinfo^.mem_lower);
      console_writestringln('KB');
@@ -34,8 +42,7 @@ begin
      console_writestring('Total Memory = ');
      console_writeint(((mbinfo^.mem_upper + 1000) div 1024) +1);
      console_writestringln('MB');
-	console_setdefaultattribute(console_combinecolors(Red, Black));
-	console_writestringln('Entering Login Queue... You are number #RAN in the Queue.');
+     console_setdefaultattribute(console_combinecolors(lYellow, Black));
      asm
         cli
         hlt

src/util.pas

@@ -1,10 +1,15 @@
 unit util;
 
+{$ASMMODE intel}
+
 interface
 
 function util_hi(b : byte) : byte;
 function util_lo(b : byte) : byte;
 function util_switchendian(b : byte) : byte;
+procedure outb(port : word; val : byte);
+procedure outw(port : word; val : word);
+procedure outl(port : word; val : longword);
 
 implementation
 
@@ -23,4 +28,43 @@ begin
      util_switchendian:= (util_lo(b) SHL 4) OR util_hi(b);
 end;
 
+procedure outl(port : word; val : longword); [public, alias: 'outl'];
+begin
+     asm
+          PUSH EAX
+          PUSH EDX
+          MOV DX, port
+          MOV EAX, val
+          OUT DX, EAX
+          POP EDX
+          POP EAX
+     end;
+end;
+
+procedure outw(port : word; val : word); [public, alias: 'outw'];
+begin
+     asm
+          PUSH EAX
+          PUSH EDX
+          MOV DX, port
+          MOV AX, val
+          OUT DX, AX
+          POP EDX
+          POP EAX
+     end;
+end;
+
+procedure outb(port : word; val : byte); [public, alias: 'outb'];
+begin
+     asm
+          PUSH EAX
+          PUSH EDX
+          MOV DX, port
+          MOV AL, val
+          OUT DX, AL
+          POP EDX
+          POP EAX
+     end;
+end;
+
 end.