// 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 **********************************************************************/ #pragma once #ifndef __COM8116__ #define __COM8116__ ///************************************************************************* // INTERFACE CONFIGURATION MACROS ///************************************************************************* #define MCFG_COM8116_FX4_HANDLER(_devcb) \ devcb = &com8116_device::set_fx4_handler(*device, DEVCB_##_devcb); #define MCFG_COM8116_FR_HANDLER(_devcb) \ devcb = &com8116_device::set_fr_handler(*device, DEVCB_##_devcb); #define MCFG_COM8116_FT_HANDLER(_devcb) \ devcb = &com8116_device::set_ft_handler(*device, 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 static devcb_base &set_fx4_handler(device_t &device, _Object object) { return downcast(device).m_fx4_handler.set_callback(object); } template static devcb_base &set_fr_handler(device_t &device, _Object object) { return downcast(device).m_fr_handler.set_callback(object); } template static devcb_base &set_ft_handler(device_t &device, _Object object) { return downcast(device).m_ft_handler.set_callback(object); } void str_w(uint8_t data); DECLARE_WRITE8_MEMBER( str_w ); void stt_w(uint8_t data); DECLARE_WRITE8_MEMBER( stt_w ); static const int divisors_16X_5_0688MHz[]; static const int divisors_16X_6_01835MHz[]; static const int divisors_16X_4_9152MHz[]; static const int divisors_32X_5_0688MHz[]; static const int divisors_16X_2_7648MHz[]; static const int divisors_16X_5_0688MHz_030[]; static const int divisors_16X_4_6080MHz[]; static const int divisors_16X_4_9152MHz_SY2661_1[]; static const int divisors_16X_4_9152MHz_SY2661_2[]; protected: // 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 *m_fr_divisors; const int *m_ft_divisors; // timers emu_timer *m_fx4_timer; emu_timer *m_fr_timer; emu_timer *m_ft_timer; }; // device type definition extern const device_type COM8116; #endif