Constants.h

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// -----------------------------------------------------------------------------
// This file is part of VirtualC64
//
// Copyright (C) Dirk W. Hoffmann. www.dirkwhoffmann.de
// This FILE is dual-licensed. You are free to choose between:
//
//     - The GNU General Public License v3 (or any later version)
//     - The Mozilla Public License v2
//
// SPDX-License-Identifier: GPL-3.0-or-later OR MPL-2.0
// -----------------------------------------------------------------------------
#pragma once
 
#include "Types.h"
 
namespace vc64 {
 
namespace PAL {
 
// Clock frequencies
static const long CLOCK_FREQUENCY       = 985249;   
static const long CYCLES_PER_SECOND     = CLOCK_FREQUENCY;  
 
// Aspect ratios
static const double ASPECT_RATIO        = 0.9365;   
 
// Horizontal parameters (measured in cycles)
static const long HBLANK_CYCLES_LEFT    = 13;       
static const long BORDER_CYCLES_LEFT    = 4;        
static const long CANVAS_CYCLES         = 40;       
static const long BORDER_CYCLES_RIGHT   = 4;        
static const long HBLANK_CYCLES_RIGHT   = 2;        
 
// Derived values
static const long PAL_CYCLES_PER_LINE   = 63;       
 
// Horizontal parameters (measured in pixels)
static const long HBLANK_PIXELS_LEFT    = 104;      
static const long BORDER_PIXELS_LEFT    = 32;       
static const long CANVAS_PIXELS         = 320;      
static const long BORDER_PIXELS_RIGHT   = 32;       
static const long HBLANK_PIXELS_RIGHT   = 16;       
 
// Derived values
static const long FIRST_VISIBLE_PIXEL   = 104;      
static const long VISIBLE_PIXELS        = 384;      
static const long LAST_VISIBLE_PIXEL    = 487;      
static const long PIXELS_PER_LINE       = 504;      
 
// Vertical parameters
static const long FIRST_VISIBLE_LINE    = 16;       
 
}
 
namespace NTSC {
 
// Clock frequency in Hz
static const long CLOCK_FREQUENCY       = 1022727;  
static const long CYCLES_PER_SECOND     = CLOCK_FREQUENCY;  
 
// Pixel aspect ratios
static const double ASPECT_RATIO        = 0.7500;   
 
// Horizontal parameters (measured in cycles)
static const long HBLANK_CYCLES_LEFT    = 13;       
static const long BORDER_CYCLES_LEFT    = 4;        
static const long CANVAS_CYCLES         = 40;       
static const long BORDER_CYCLES_RIGHT   = 4;        
static const long HBLANK_CYCLES_RIGHT   = 4;        
 
// Derived values
static const long CYCLES_PER_LINE       = 65;       
 
// Horizontal parameters (measured in pixels)
static const long HBLANK_PIXELS_LEFT    = 104;      
static const long BORDER_PIXELS_LEFT    = 32;       
static const long CANVAS_PIXELS         = 320;      
static const long BORDER_PIXELS_RIGHT   = 32;       
static const long HBLANK_PIXELS_RIGHT   = 32;       
 
// Derived values
static const long FIRST_VISIBLE_PIXEL   = 104;      
static const long VISIBLE_PIXELS        = 384;      
static const long LAST_VISIBLE_PIXEL    = 487;      
static const long PIXELS_PER_LINE       = 520;      
 
// Vertical parameters
static const long FIRST_VISIBLE_LINE    = 16;       
 
}
 
namespace Texture {
 
static const long height                    = 312;
 
static const long width                     = 520;
 
}
 
}