mirror of
https://github.com/libretro/smsplus-gx.git
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71 lines
2.7 KiB
C
71 lines
2.7 KiB
C
/******************************************************************************
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* Sega Master System / GameGear Emulator
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* Copyright (C) 1998-2007 Charles MacDonald
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*
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* additionnal code by Eke-Eke (SMS Plus GX)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* I/O chip and peripheral emulation
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*
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******************************************************************************/
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#ifndef PIO_H_
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#define PIO_H_
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#define SIO_TXFL (1 << 0) /* 1= Transmit buffer full */
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#define SIO_RXRD (1 << 1) /* 1= Receive buffer full */
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#define SIO_FRER (1 << 2) /* 1= Framing error occured */
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#define MAX_DEVICE 2
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#define DEVICE_D0 (1 << 0)
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#define DEVICE_D1 (1 << 1)
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#define DEVICE_D2 (1 << 2)
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#define DEVICE_D3 (1 << 3)
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#define DEVICE_TL (1 << 4)
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#define DEVICE_TR (1 << 5)
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#define DEVICE_TH (1 << 6)
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#define DEVICE_ALL (DEVICE_D0 | DEVICE_D1 | DEVICE_D2 | DEVICE_D3 | DEVICE_TL | DEVICE_TR | DEVICE_TH)
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#define PIN_LVL_LO 0 /* Pin outputs 0V */
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#define PIN_LVL_HI 1 /* Pin outputs +5V */
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#define PIN_DIR_OUT 0 /* Pin is is an active driving output */
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#define PIN_DIR_IN 1 /* Pin is in active-low input mode */
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enum {
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PORT_A = 0, /* I/O port A */
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PORT_B = 1 /* I/O port B */
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};
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enum {
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DEVICE_NONE = 0, /* No peripheral */
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DEVICE_PAD2B = 1, /* Standard 2-button digital joystick/gamepad */
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DEVICE_PADDLE = 2, /* Paddle controller; rotary dial with fire button */
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DEVICE_LIGHTGUN = 3, /* Sega Light Phaser; Light Gun with trigger button */
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DEVICE_SPORTSPAD = 4, /* Sports Pad controller; analog stick with 2 buttons */
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};
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/* Function prototypes */
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extern void pio_init(void);
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extern void pio_reset(void);
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extern void pio_shutdown(void);
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extern void pio_ctrl_w(uint8_t data);
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extern uint8_t pio_port_r(int32_t offset);
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extern void sio_w(int32_t offset, uint8_t data);
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extern uint8_t sio_r(int32_t offset);
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extern uint8_t coleco_pio_r(int32_t port);
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#endif /* _PIO_H_ */
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