protected override void OnLoad( EventArgs e )
{
String exePath = Path.GetDirectoryName( Assembly.GetExecutingAssembly().GetName().CodeBase );
if ( exePath.StartsWith( "file:\\" ) )
exePath = exePath.Substring( 6 );
myCharacterSet = new Texture2D( new Bitmap( exePath + Path.DirectorySeparatorChar + "charset.png" ) );
myDefaultCharSet = new ushort[ 256 ];
for ( int i = 0; i < 127; ++i )
{
for ( int w = 0; w < 2; ++w )
{
ushort word = 0x0000;
for ( int j = 0; j < 16; ++j )
{
int x = ( ( i & 0xf ) << 2 ) + ( w << 1 ) + ( j >> 3 );
int y = ( ( i >> 4 ) << 3 ) + ( j & 7 );
if ( myCharacterSet.GetPixel( x, y ).R >= 128 )
word |= (ushort) ( 1 << ( 15 - j ) );
}
myDefaultCharSet[ ( i << 1 ) + w ] = word;
}
}
myCharShader = new CharacterShader( myCharacterSet, Width, Height );
myCharMap = new Character[ VideoBufferLength ];
for ( int i = 0; i < VideoBufferLength; ++i )
{
myCharMap[ i ] = new Character( Scale );
myCharMap[ i ].Position = new Vector2( ( i % Columns + 2 ) * 4 * Scale,
( i / Columns + 1 ) * 8 * Scale );
myCharMap[ i ].Value = 0x0000;
}
CPU.MemoryChanged += delegate( object sender, MemoryChangedEventArgs me )
{
if ( myDumping )
return;
if ( VideoBufferLoc != 0 && me.Location >= VideoBufferLoc && me.Location < VideoBufferLoc + VideoBufferLength )
{
int index = me.Location - VideoBufferLoc;
myCharMap[ index ].Value = me.Value;
}
else if ( CharacterSetLoc != 0 && me.Location >= CharacterSetLoc && me.Location < CharacterSetLoc + 256 )
{
int index = me.Location - CharacterSetLoc;
int x = ( index % 32 ) * 2;
int y = ( index / 32 ) * 8;
ushort val = me.Value;
for ( int i = 0; i < 16; ++i )
{
if ( ( ( val >> i ) & 1 ) == 1 )
myCharacterSet.SetPixel( x + 1 - i / 8, y + i % 8, Color.White );
else
myCharacterSet.SetPixel( x + 1 - i / 8, y + i % 8, Color.Black );
}
}
};
Ready = true;
}
