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// license:BSD-3-Clause
// copyright-holders:Jarek Parchanski
#ifndef MAME_MACHINE_TAITO8741_H
#define MAME_MACHINE_TAITO8741_H
#pragma once
/****************************************************************************
not used by anything. TODO: remove?
****************************************************************************/
/* NEC 8741 program mode */
#define TAITO8741_MASTER 0
#define TAITO8741_SLAVE 1
#define TAITO8741_PORT 2
class taito8741_4pack_device : public device_t
{
public:
taito8741_4pack_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto port_handler_0_callback() { return m_port_handler_0_r.bind(); }
auto port_handler_1_callback() { return m_port_handler_1_r.bind(); }
auto port_handler_2_callback() { return m_port_handler_2_r.bind(); }
auto port_handler_3_callback() { return m_port_handler_3_r.bind(); }
void set_mode(int num, uint8_t mode) { m_taito8741[num].mode = mode; }
void set_connect(int num, int conn) { m_taito8741[num].connect = conn; }
uint8_t read_0(offs_t offset) { if(offset&1) return status_r(0); else return data_r(0); }
void write_0(offs_t offset, uint8_t data) { if(offset&1) command_w(0,data); else data_w(0,data); }
uint8_t read_1(offs_t offset) { if(offset&1) return status_r(1); else return data_r(1); }
void write_1(offs_t offset, uint8_t data) { if(offset&1) command_w(1,data); else data_w(1,data); }
uint8_t read_2(offs_t offset) { if(offset&1) return status_r(2); else return data_r(2); }
void write_2(offs_t offset, uint8_t data) { if(offset&1) command_w(2,data); else data_w(2,data); }
uint8_t read_3(offs_t offset) { if(offset&1) return status_r(3); else return data_r(3); }
void write_3(offs_t offset, uint8_t data) { if(offset&1) command_w(3,data); else data_w(3,data); }
TIMER_CALLBACK_MEMBER( serial_tx );
void update(int num);
int status_r(int num);
int data_r(int num);
void data_w(int num, int data);
void command_w(int num, int data);
uint8_t port_read(int num, int offset);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
struct I8741 {
int number;
uint8_t toData; /* to host data */
uint8_t fromData; /* from host data */
uint8_t fromCmd; /* from host command */
uint8_t status; /* b0 = rd ready,b1 = wd full,b2 = cmd ?? */
uint8_t mode;
uint8_t phase;
uint8_t txd[8];
uint8_t rxd[8];
uint8_t parallelselect;
uint8_t txpoint;
int connect;
uint8_t pending4a;
int serial_out;
int coins;
};
void hostdata_w(I8741 *st,int data);
int hostdata_r(I8741 *st);
int hostcmd_r(I8741 *st);
void serial_rx(I8741 *st,uint8_t *data);
// internal state
I8741 m_taito8741[4];
devcb_read8 m_port_handler_0_r;
devcb_read8 m_port_handler_1_r;
devcb_read8 m_port_handler_2_r;
devcb_read8 m_port_handler_3_r;
};
DECLARE_DEVICE_TYPE(TAITO8741_4PACK, taito8741_4pack_device)
#endif // MAME_MACHINE_TAITO8741_H
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