public LEM1802( DCPU16Emulator cpu, int rows = 12, int cols = 32, int scale = 2 )
: base(( cols + 4 ) * 4 * scale, ( rows + 2 ) * 8 * scale,
new GraphicsMode( new ColorFormat( 8, 8, 8, 0 ), 0 ),
"DCPU16 Virtual Display")
{
CPU = cpu;
Rows = rows;
Columns = cols;
Scale = scale;
VideoBufferLoc = 0;
VideoBufferLength = (ushort) ( Rows * Columns );
CharacterSetLoc = 0;
myKeyIndex = 0;
myKeyQueue = new Queue<ushort>();
myDumping = false;
}
public int Interrupt( DCPU16Emulator cpu )
{
switch ( cpu.A )
{
case 0: // MEM_MAP_SCREEN
VideoBufferLoc = cpu.B;
return 0;
case 1: // MEM_MAP_FONT
CharacterSetLoc = cpu.B;
return 0;
case 2: // MEM_MAP_PALETTE
throw new NotImplementedException();
case 3: // SET_BORDER_COLOR
throw new NotImplementedException();
case 4: // MEM_DUMP_FONT
myDumping = true;
for ( int i = 0; i < 256; ++i )
cpu.SetMemory( cpu.B + i, myDefaultCharSet[ i ] );
myDumping = false;
return 256;
case 5: // MEM_DUMP_PALETTE
throw new NotImplementedException();
}
return 0;
}