summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/spectrum/d40.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/spectrum/d40.h')
-rw-r--r--src/devices/bus/spectrum/d40.h130
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