#ifndef _PORT_H
#define _PORT_H

// Port Assignments
#define VIDEO_PORT PORTD    // Video Out Port.
                            // D.5 is sync: 1000 ohm + diode to 75 ohm resistor.
                            // D.6 is video: 330 ohm + diode to 75 ohm resistor.
#define VIDEO_DDR  DDRD     // Video Out Data Direction Register.
                            
#define P1_PORT    PORTA    // Player 1 Genesis Controller Port.
#define P1_PIN     ~PINA     // Player 1 Genesis Controller Input Pins.
#define P1_DDR     DDRA     // Player 1 Data Direction Register.

#define P2_PORT    PORTC    // Player 2 Genesis Controller Port.
#define P2_PIN     ~PINC     // Player 2 Genesis Controller Input Pins.
#define P2_DDR     DDRC     // Player 1 Data Direction Register.

// Genesis Port Assignments.
#define GEN_UP    0x8       // Up Controller Bit.
#define GEN_LEFT  0x1       // Left Controller Bit.
#define GEN_RIGHT 0x4       // Right Controller Bit.
#define GEN_W1    0x20       // Button B Controller Bit (Weapon 1)
#define GEN_W2    0x80      // Button C Controller Bit (Weapon 1)

#endif