Console Updates:

- Added Colors as Enum.
- Added Attribute Forming Function (Foreground + Background = Attribute).
- Added Console Properties.
- Added Default Attribute to Console Properties.
- Created standard screen functions with an ex variant to specify/override default attr.
- Started work on Caret/Cursor (re-)positioning.
Util:
- Added endianness conversion and various utils.

git-svn-id: https://spexeah.com:8443/svn/Asuro@8 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c

src/kernel.pas

@@ -4,7 +4,8 @@ interface
  
 uses
         multiboot,
-        console;
+        console,
+        util;
  
 procedure kmain(mbinfo: Pmultiboot_info_t; mbmagic: DWORD); stdcall;
  
@@ -13,28 +14,30 @@ implementation
 procedure kmain(mbinfo: Pmultiboot_info_t; mbmagic: DWORD); stdcall; [public, alias: 'kmain'];
 begin
      console_init();
-     console_writestringln('Asuro Booting...', #7);
+     console_writestringln('Asuro Booting...');
      if (mbmagic <> MULTIBOOT_BOOTLOADER_MAGIC) then begin
-        console_writestringln('Multiboot Compliant Boot-Loader Needed!', #7);
+        console_setdefaultattribute(console_combinecolors(Red, Black));
-        console_writestringln('HALTING', #7);
+        console_writestringln('Multiboot Compliant Boot-Loader Needed!');
+        console_writestringln('HALTING');
         asm
            cli
            hlt
         end;
      end;
-     console_writestringln('Asuro Booted Correctly!', #7);
+     console_setdefaultattribute(console_combinecolors(Green, Black));
-     console_writestring('Lower Memory = ', #7);
+     console_writestringln('Asuro Booted Correctly!');
-     console_writeint(mbinfo^.mem_lower, #7);
+     console_writestring('Lower Memory = ');
-     console_writestringln('KB', #7);
+     console_writeint(mbinfo^.mem_lower);
-     console_writestring('Higher Memory = ', #7);
+     console_writestringln('KB');
-     console_writeint(mbinfo^.mem_upper, #7);
+     console_writestring('Higher Memory = ');
-     console_writestringln('KB', #7);
+     console_writeint(mbinfo^.mem_upper);
-     console_writestring('Total Memory = ', #7);
+     console_writestringln('KB');
-     console_writeint(((mbinfo^.mem_upper + 1000) div 1024) +1, #7);
+     console_writestring('Total Memory = ');
-     console_writestringln('MB', #7);
+     console_writeint(((mbinfo^.mem_upper + 1000) div 1024) +1);
+     console_writestringln('MB');
      asm
-        @loop:
+        cli
-        jmp @loop
+        hlt
      end;
 end;
  

src/util.pas

@@ -0,0 +1,26 @@
+unit util;
+
+interface
+
+function util_hi(b : byte) : byte;
+function util_lo(b : byte) : byte;
+function util_switchendian(b : byte) : byte;
+
+implementation
+
+function util_hi(b : byte) : byte; [public, alias: 'util_hi'];
+begin
+     util_hi:= (b AND $F0) SHR 4;
+end;
+
+function util_lo(b : byte) : byte; [public, alias: 'util_lo'];
+begin
+     util_lo:= b AND $0F;
+end;
+
+function util_switchendian(b : byte) : byte; [public, alias: 'util_switchendian'];
+begin
+     util_switchendian:= (util_lo(b) SHL 4) OR util_hi(b);
+end;
+
+end.