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/*****************************************************************************
*
* includes/pce.h
*
* NEC PC Engine/TurboGrafx16
*
****************************************************************************/
#ifndef PCE_H_
#define PCE_H_
#include "cdrom.h"
#include "cpu/h6280/h6280.h"
#include "sound/msm5205.h"
#include "machine/nvram.h"
#include "video/huc6260.h"
#define C6280_TAG "c6280"
#define MAIN_CLOCK 21477270
#define PCE_CD_CLOCK 9216000
#define PCE_HEADER_SIZE 512
#define TG_16_JOY_SIG 0x00
#define PCE_JOY_SIG 0x40
#define NO_CD_SIG 0x80
#define CD_SIG 0x00
/* these might be used to indicate something, but they always seem to return 1 */
#define CONST_SIG 0x30
/* the largest possible cartridge image (street fighter 2 - 2.5MB) */
#define PCE_ROM_MAXSIZE 0x280000
struct pce_cd_t
{
UINT8 regs[16];
UINT8 *bram;
UINT8 *adpcm_ram;
int bram_locked;
int adpcm_read_ptr;
UINT8 adpcm_read_buf;
int adpcm_write_ptr;
UINT8 adpcm_write_buf;
int adpcm_length;
int adpcm_clock_divider;
UINT32 msm_start_addr;
UINT32 msm_end_addr;
UINT32 msm_half_addr;
UINT8 msm_nibble;
UINT8 msm_idle;
UINT8 msm_repeat;
/* SCSI signals */
int scsi_BSY; /* Busy. Bus in use */
int scsi_SEL; /* Select. Initiator has won arbitration and has selected a target */
int scsi_CD; /* Control/Data. Target is sending control (data) information */
int scsi_IO; /* Input/Output. Target is sending (receiving) information */
int scsi_MSG; /* Message. Target is sending or receiving a message */
int scsi_REQ; /* Request. Target is requesting a data transfer */
int scsi_ACK; /* Acknowledge. Initiator acknowledges that it is ready for a data transfer */
int scsi_ATN; /* Attention. Initiator has a message ready for the target */
int scsi_RST; /* Reset. Initiator forces all targets and any other initiators to do a warm reset */
int scsi_last_RST; /* To catch setting of RST signal */
int cd_motor_on;
int selected;
UINT8 *command_buffer;
int command_buffer_index;
int status_sent;
int message_after_status;
int message_sent;
UINT8 *data_buffer;
int data_buffer_size;
int data_buffer_index;
int data_transferred;
/* Arcade Card specific */
UINT8 *acard_ram;
UINT8 acard_latch;
UINT8 acard_ctrl[4];
UINT32 acard_base_addr[4];
UINT16 acard_addr_offset[4];
UINT16 acard_addr_inc[4];
UINT32 acard_shift;
UINT8 acard_shift_reg;
UINT32 current_frame;
UINT32 end_frame;
UINT32 last_frame;
UINT8 cdda_status;
UINT8 cdda_play_mode;
UINT8 *subcode_buffer;
UINT8 end_mark;
cdrom_file *cd;
const cdrom_toc* toc;
emu_timer *data_timer;
emu_timer *adpcm_dma_timer;
emu_timer *cdda_fadeout_timer;
emu_timer *cdda_fadein_timer;
double cdda_volume;
emu_timer *adpcm_fadeout_timer;
emu_timer *adpcm_fadein_timer;
double adpcm_volume;
};
class pce_state : public driver_device
{
public:
pce_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_cd_ram(*this, "cd_ram"),
m_user_ram(*this, "user_ram"),
m_huc6260(*this, "huc6260")
{ }
required_device<h6280_device> m_maincpu;
required_shared_ptr<UINT8> m_cd_ram;
required_shared_ptr<UINT8> m_user_ram;
optional_device<huc6260_device> m_huc6260;
UINT8 m_io_port_options;
UINT8 m_sys3_card;
UINT8 m_acard;
pce_cd_t m_cd;
UINT8 *m_cartridge_ram;
int m_joystick_port_select;
int m_joystick_data_select;
UINT8 m_joy_6b_packet[5];
DECLARE_WRITE8_MEMBER(pce_sf2_banking_w);
DECLARE_WRITE8_MEMBER(pce_cartridge_ram_w);
DECLARE_WRITE8_MEMBER(mess_pce_joystick_w);
DECLARE_READ8_MEMBER(mess_pce_joystick_r);
DECLARE_WRITE8_MEMBER(pce_cd_bram_w);
DECLARE_WRITE8_MEMBER(pce_cd_intf_w);
DECLARE_READ8_MEMBER(pce_cd_intf_r);
DECLARE_READ8_MEMBER(pce_cd_acard_r);
DECLARE_WRITE8_MEMBER(pce_cd_acard_w);
DECLARE_READ8_MEMBER(pce_cd_acard_wram_r);
DECLARE_WRITE8_MEMBER(pce_cd_acard_wram_w);
DECLARE_DRIVER_INIT(sgx);
DECLARE_DRIVER_INIT(tg16);
DECLARE_DRIVER_INIT(mess_pce);
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_MACHINE_START(pce);
DECLARE_MACHINE_RESET(mess_pce);
TIMER_CALLBACK_MEMBER(pce_cd_data_timer_callback);
TIMER_CALLBACK_MEMBER(pce_cd_cdda_fadeout_callback);
TIMER_CALLBACK_MEMBER(pce_cd_cdda_fadein_callback);
TIMER_CALLBACK_MEMBER(pce_cd_adpcm_fadeout_callback);
TIMER_CALLBACK_MEMBER(pce_cd_adpcm_fadein_callback);
TIMER_CALLBACK_MEMBER(pce_cd_clear_ack);
TIMER_CALLBACK_MEMBER(pce_cd_adpcm_dma_timer_callback);
DECLARE_WRITE_LINE_MEMBER(pce_irq_changed);
DECLARE_DEVICE_IMAGE_LOAD_MEMBER(pce_cart);
};
/*----------- defined in machine/pce.c -----------*/
extern const msm5205_interface pce_cd_msm5205_interface;
#endif /* PCE_H_ */
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