diff options
Diffstat (limited to 'src/devices/cpu/m6502/m5074x.h')
-rw-r--r-- | src/devices/cpu/m6502/m5074x.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/devices/cpu/m6502/m5074x.h b/src/devices/cpu/m6502/m5074x.h new file mode 100644 index 00000000000..10f0aa06df5 --- /dev/null +++ b/src/devices/cpu/m6502/m5074x.h @@ -0,0 +1,147 @@ +// license:BSD-3-Clause +// copyright-holders:Olivier Galibert +#pragma once + +#ifndef __M5074X_H__ +#define __M5074X_H__ + +#include "m740.h" + +//************************************************************************** +// CONSTANTS +//************************************************************************** + +// internal ROM region +#define M5074X_INTERNAL_ROM_REGION "internal" +#define M5074X_INTERNAL_ROM(_tag) (_tag ":" M5074X_INTERNAL_ROM_REGION) + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_M5074X_PORT0_READ_CALLBACK(_read) \ + devcb = &m5074x_device::set_p0_rd_callback(*device, DEVCB_##_read); + +#define MCFG_M5074X_PORT1_READ_CALLBACK(_read) \ + devcb = &m5074x_device::set_p1_rd_callback(*device, DEVCB_##_read); + +#define MCFG_M5074X_PORT2_READ_CALLBACK(_read) \ + devcb = &m5074x_device::set_p2_rd_callback(*device, DEVCB_##_read); + +#define MCFG_M5074X_PORT3_READ_CALLBACK(_read) \ + devcb = &m5074x_device::set_p3_rd_callback(*device, DEVCB_##_read); + +#define MCFG_M5074X_PORT0_WRITE_CALLBACK(_write) \ + devcb = &m5074x_device::set_p0_wr_callback(*device, DEVCB_##_write); + +#define MCFG_M5074X_PORT1_WRITE_CALLBACK(_write) \ + devcb = &m5074x_device::set_p1_wr_callback(*device, DEVCB_##_write); + +#define MCFG_M5074X_PORT2_WRITE_CALLBACK(_write) \ + devcb = &m5074x_device::set_p2_wr_callback(*device, DEVCB_##_write); + +#define MCFG_M5074X_PORT3_WRITE_CALLBACK(_write) \ + devcb = &m5074x_device::set_p3_wr_callback(*device, DEVCB_##_write); + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> m5074x_device + +class m5074x_device : public m740_device +{ + friend class m50740_device; + friend class m50741_device; + + enum + { + M5074X_INT1_LINE = INPUT_LINE_IRQ0, + + M5074X_SET_OVERFLOW = M740_SET_OVERFLOW + }; + + enum + { + TIMER_1 = 0, + TIMER_2, + TIMER_X, + + NUM_TIMERS + }; + +public: + // construction/destruction + m5074x_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, address_map_constructor internal_map, const char *shortname, const char *source); + + const address_space_config m_program_config; + + template<class _Object> static devcb_base &set_p0_rd_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).read_p0.set_callback(object); } + template<class _Object> static devcb_base &set_p1_rd_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).read_p1.set_callback(object); } + template<class _Object> static devcb_base &set_p2_rd_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).read_p2.set_callback(object); } + template<class _Object> static devcb_base &set_p3_rd_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).read_p3.set_callback(object); } + template<class _Object> static devcb_base &set_p0_wr_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).write_p0.set_callback(object); } + template<class _Object> static devcb_base &set_p1_wr_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).write_p1.set_callback(object); } + template<class _Object> static devcb_base &set_p2_wr_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).write_p2.set_callback(object); } + template<class _Object> static devcb_base &set_p3_wr_callback(device_t &device, _Object object) { return downcast<m5074x_device &>(device).write_p3.set_callback(object); } + + devcb_read8 read_p0, read_p1, read_p2, read_p3; + devcb_write8 write_p0, write_p1, write_p2, write_p3; + + DECLARE_READ8_MEMBER(ports_r); + DECLARE_WRITE8_MEMBER(ports_w); + DECLARE_READ8_MEMBER(tmrirq_r); + DECLARE_WRITE8_MEMBER(tmrirq_w); + + bool are_port_bits_output(UINT8 port, UINT8 mask) { return ((m_ddrs[port] & mask) == mask) ? true : false; } + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); + virtual void execute_set_input(int inputnum, int state); + virtual const address_space_config *memory_space_config(address_spacenum spacenum) const { return (spacenum == AS_PROGRAM) ? &m_program_config : NULL; } + + void send_port(address_space &space, UINT8 offset, UINT8 data); + UINT8 read_port(UINT8 offset); + + void recalc_irqs(); + void recalc_timer(int timer); + + UINT8 m_ports[6], m_ddrs[6]; + UINT8 m_intctrl, m_tmrctrl; + UINT8 m_tmr12pre, m_tmr1, m_tmr2, m_tmrxpre, m_tmrx; + UINT8 m_tmr1latch, m_tmr2latch, m_tmrxlatch; + UINT8 m_last_all_ints; + +private: + emu_timer *m_timers[NUM_TIMERS]; +}; + +class m50740_device : public m5074x_device +{ +public: + m50740_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + m50740_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + +protected: + +private: +}; + +class m50741_device : public m5074x_device +{ +public: + m50741_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + m50741_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + +protected: + +private: +}; + +extern const device_type M50740; +extern const device_type M50741; + +#endif |