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Diffstat (limited to 'src/devices/machine/z80daisy_generic.h')
-rw-r--r-- | src/devices/machine/z80daisy_generic.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/devices/machine/z80daisy_generic.h b/src/devices/machine/z80daisy_generic.h new file mode 100644 index 00000000000..e30cef85139 --- /dev/null +++ b/src/devices/machine/z80daisy_generic.h @@ -0,0 +1,70 @@ +// license: BSD-3-Clause +// copyright-holders: Dirk Best +/*************************************************************************** + + Generic Z80 daisy chain device + +***************************************************************************/ + +#ifndef MAME_MACHINE_Z80DAISY_GENERIC_H +#define MAME_MACHINE_Z80DAISY_GENERIC_H + +#pragma once + +#include "z80daisy.h" + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +#define MCFG_Z80DAISY_GENERIC_ADD(_tag, _vector) \ + MCFG_DEVICE_ADD(_tag, Z80DAISY_GENERIC, 0) \ + downcast<z80daisy_generic_device &>(*device).set_vector(_vector); \ + +#define MCFG_Z80DAISY_GENERIC_INT_CB(_devcb) \ + devcb = &downcast<z80daisy_generic_device &>(*device).set_int_handler(DEVCB_##_devcb); + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class z80daisy_generic_device : public device_t, public device_z80daisy_interface +{ +public: + // construction/destruction + z80daisy_generic_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + // callbacks + template <class Object> devcb_base &set_int_handler(Object &&cb) { return m_int_handler.set_callback(std::forward<Object>(cb)); } + + // configuration + void set_vector(uint8_t vector) { m_vector = vector; } + + DECLARE_WRITE_LINE_MEMBER(int_w); + DECLARE_WRITE_LINE_MEMBER(mask_w); + +protected: + // device-level overrides + virtual void device_start() override; + + // z80daisy_interface overrides + virtual int z80daisy_irq_state() override; + virtual int z80daisy_irq_ack() override; + virtual void z80daisy_irq_reti() override; + +private: + void update_interrupt(); + + devcb_write_line m_int_handler; + + int m_int; + int m_mask; + int m_vector; +}; + +// device type definition +DECLARE_DEVICE_TYPE(Z80DAISY_GENERIC, z80daisy_generic_device) + +#endif // MAME_MACHINE_Z80DAISY_GENERIC_H |