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Diffstat (limited to 'src/devices/bus/spectrum/d40.h')
-rw-r--r-- | src/devices/bus/spectrum/d40.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/src/devices/bus/spectrum/d40.h b/src/devices/bus/spectrum/d40.h new file mode 100644 index 00000000000..f63438f5eb4 --- /dev/null +++ b/src/devices/bus/spectrum/d40.h @@ -0,0 +1,130 @@ +// license:BSD-3-Clause +// copyright-holders:MetalliC +/********************************************************************** + + Didaktik D40/D80 interface + +**********************************************************************/ + +#ifndef MAME_BUS_SPECTRUM_D40_H +#define MAME_BUS_SPECTRUM_D40_H + +#pragma once + +#include "exp.h" +//#include "softlist.h" +#include "imagedev/floppy.h" +#include "machine/wd_fdc.h" +#include "machine/upd765.h" +#include "machine/i8255.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class spectrum_d40base_device: public device_t, public device_spectrum_expansion_interface +{ +public: + DECLARE_INPUT_CHANGED_MEMBER(snapshot_button); + +protected: + spectrum_d40base_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + + // device-level overrides + virtual void device_start() override ATTR_COLD; + virtual void device_reset() override ATTR_COLD; + + // optional information overrides + virtual ioport_constructor device_input_ports() const override ATTR_COLD; + + virtual void pre_opcode_fetch(offs_t offset) override; + virtual uint8_t mreq_r(offs_t offset) override; + virtual void mreq_w(offs_t offset, uint8_t data) override; + virtual uint8_t iorq_r(offs_t offset) override; + virtual void iorq_w(offs_t offset, uint8_t data) override; + virtual bool romcs() override; + + virtual uint8_t fdc0_r(offs_t offset) { return 0xff; } + virtual uint8_t fdc1_r(offs_t offset) { return 0xff; } + virtual void fdc0_w(offs_t offset, uint8_t data) { } + virtual void fdc1_w(offs_t offset, uint8_t data) { } + virtual void nmi_check(); + + required_memory_region m_rom; + required_device<i8255_device> m_ppi; + required_ioport m_snap; + + bool m_romcs; + uint8_t m_ram[2 * 1024]; + int m_snap_flag; + int m_8255_reset; + int m_8255_enable; +}; + +class spectrum_d40_device : + public spectrum_d40base_device +{ +public: + spectrum_d40_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + spectrum_d40_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; + virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD; + + virtual void device_start() override ATTR_COLD; + virtual void device_reset() override ATTR_COLD; + + required_device<wd_fdc_device_base> m_fdc; + required_device_array<floppy_connector, 2> m_floppy; + + virtual uint8_t fdc0_r(offs_t offset) override; + virtual void fdc0_w(offs_t offset, uint8_t data) override; + virtual void fdc1_w(offs_t offset, uint8_t data) override; + void fdc_intrq_w(int state); + void fdc_drq_w(int state); + virtual void nmi_check() override; + + uint8_t m_control; + int m_intrq; + int m_drq; +}; + +class spectrum_d80_device : + public spectrum_d40_device +{ +public: + spectrum_d80_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; +}; + +class spectrum_d80v2_device : + public spectrum_d40base_device +{ +public: + spectrum_d80v2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; + virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD; + + virtual void pre_opcode_fetch(offs_t offset) override; + virtual uint8_t mreq_r(offs_t offset) override; + + required_device<wd37c65c_device> m_fdc; + required_device_array<floppy_connector, 2> m_floppy; + + virtual uint8_t fdc0_r(offs_t offset) override; + virtual uint8_t fdc1_r(offs_t offset) override; + virtual void fdc0_w(offs_t offset, uint8_t data) override; + virtual void fdc1_w(offs_t offset, uint8_t data) override; +}; + +// device type definition +DECLARE_DEVICE_TYPE(SPECTRUM_D40, spectrum_d40_device) +DECLARE_DEVICE_TYPE(SPECTRUM_D80, spectrum_d80_device) +DECLARE_DEVICE_TYPE(SPECTRUM_D80V2, spectrum_d80v2_device) + +#endif // MAME_BUS_SPECTRUM_D40_H |