// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** COM8116 Dual Baud Rate Generator (Programmable Divider) emulation COM5016 is a mostly-compatible clone of this chip, with +12V on pin 9 rather than NC. ********************************************************************** _____ _____ XTAL/EXT1 1 |* \_/ | 18 XTAL/EXT2 +5V 2 | | 17 fT fR 3 | | 16 Ta Ra 4 | COM8116 | 15 Tb Rb 5 | COM8116T | 14 Tc Rc 6 | COM8136 | 13 Td Rd 7 | COM8136T | 12 STT STR 8 | | 11 GND NC 9 |_____________| 10 fX/4 **********************************************************************/ #ifndef MAME_MACHINE_COM8116_H #define MAME_MACHINE_COM8116_H #pragma once ///************************************************************************* // INTERFACE CONFIGURATION MACROS ///************************************************************************* #define MCFG_COM8116_FX4_HANDLER(_devcb) \ downcast(*device).set_fx4_handler(DEVCB_##_devcb); #define MCFG_COM8116_FR_HANDLER(_devcb) \ downcast(*device).set_fr_handler(DEVCB_##_devcb); #define MCFG_COM8116_FT_HANDLER(_devcb) \ downcast(*device).set_ft_handler(DEVCB_##_devcb); ///************************************************************************* // TYPE DEFINITIONS ///************************************************************************* // ======================> com8116_device class com8116_device : public device_t { public: // construction/destruction com8116_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); template devcb_base &set_fx4_handler(Object &&cb) { return m_fx4_handler.set_callback(std::forward(cb)); } template devcb_base &set_fr_handler(Object &&cb) { return m_fr_handler.set_callback(std::forward(cb)); } template devcb_base &set_ft_handler(Object &&cb) { return m_ft_handler.set_callback(std::forward(cb)); } auto fx4_handler() { return m_fx4_handler.bind(); } auto fr_handler() { return m_fr_handler.bind(); } auto ft_handler() { return m_ft_handler.bind(); } void write_str(uint8_t data); void write_stt(uint8_t data); DECLARE_WRITE8_MEMBER(str_w) { write_str(data); } DECLARE_WRITE8_MEMBER(stt_w) { write_stt(data); } DECLARE_WRITE8_MEMBER(str_stt_w); DECLARE_WRITE8_MEMBER(stt_str_w); protected: com8116_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, const int *divisors); static const int divisors_16X_5_0688MHz[16]; static const int divisors_16X_6_01835MHz[16]; static const int divisors_16X_4_9152MHz[16]; static const int divisors_32X_5_0688MHz[16]; static const int divisors_16X_2_7648MHz[16]; static const int divisors_16X_5_0688MHz_030[16]; static const int divisors_16X_4_6080MHz[16]; static const int divisors_16X_4_9152MHz_SY2661_1[16]; static const int divisors_16X_4_9152MHz_SY2661_2[16]; // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int m_param, void *ptr) override; private: enum { TIMER_FX4, TIMER_FR, TIMER_FT }; devcb_write_line m_fx4_handler; devcb_write_line m_fr_handler; devcb_write_line m_ft_handler; int m_fx4; int m_fr; int m_ft; const int *const m_divisors; // timers emu_timer *m_fx4_timer; emu_timer *m_fr_timer; emu_timer *m_ft_timer; }; // ======================> com8116_003_device class com8116_003_device : public com8116_device { public: // construction/destruction com8116_003_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); }; // ======================> com5016_5_device class com5016_5_device : public com8116_device { public: // construction/destruction com5016_5_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); }; // ======================> com5016_013_device class com5016_013_device : public com8116_device { public: // construction/destruction com5016_013_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); }; // device type definition DECLARE_DEVICE_TYPE(COM8116, com8116_device) DECLARE_DEVICE_TYPE(COM8116_003, com8116_003_device) DECLARE_DEVICE_TYPE(COM5016_5, com5016_5_device) DECLARE_DEVICE_TYPE(COM5016_013, com5016_013_device) #endif // MAME_MACHINE_COM8116_H