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Diffstat (limited to 'src/devices/bus/vtech/memexp/memexp.h')
-rw-r--r--src/devices/bus/vtech/memexp/memexp.h52
1 files changed, 41 insertions, 11 deletions
diff --git a/src/devices/bus/vtech/memexp/memexp.h b/src/devices/bus/vtech/memexp/memexp.h
index 28c7453be4a..a4ab93e92f7 100644
--- a/src/devices/bus/vtech/memexp/memexp.h
+++ b/src/devices/bus/vtech/memexp/memexp.h
@@ -1,5 +1,5 @@
-// license:GPL-2.0+
-// copyright-holders:Dirk Best
+// license: GPL-2.0+
+// copyright-holders: Dirk Best
/***************************************************************************
VTech Laser/VZ Memory Expansion Slot
@@ -36,9 +36,12 @@
#pragma once
+#include "machine/bankdev.h"
+
// include here so drivers don't need to
#include "carts.h"
+
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
@@ -61,8 +64,8 @@ public:
vtech_memexp_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ~vtech_memexp_slot_device();
- template <typename T> void set_program_space(T &&tag, int spacenum) { m_program.set_tag(std::forward<T>(tag), spacenum); }
- template <typename T> void set_io_space(T &&tag, int spacenum) { m_io.set_tag(std::forward<T>(tag), spacenum); }
+ template <typename T> void set_memspace(T &&tag, int spacenum) { m_memspace.set_tag(std::forward<T>(tag), spacenum); }
+ template <typename T> void set_iospace(T &&tag, int spacenum) { m_iospace.set_tag(std::forward<T>(tag), spacenum); }
// callbacks
auto int_handler() { return m_int_handler.bind(); }
@@ -76,16 +79,17 @@ public:
protected:
// device-level overrides
- virtual void device_config_complete() override;
virtual void device_start() override;
- required_address_space m_program;
- required_address_space m_io;
-
private:
+ required_address_space m_memspace;
+ required_address_space m_iospace;
+
devcb_write_line m_int_handler;
devcb_write_line m_nmi_handler;
devcb_write_line m_reset_handler;
+
+ device_vtech_memexp_interface *m_module;
};
// class representing interface-specific live memexp device
@@ -96,13 +100,39 @@ public:
device_vtech_memexp_interface(const machine_config &mconfig, device_t &device);
virtual ~device_vtech_memexp_interface();
-protected:
- address_space &program_space() { return *m_slot->m_program; }
- address_space &io_space() { return *m_slot->m_io; }
+ virtual uint8_t mreq_r(offs_t offset) { return 0xff; }
+ virtual void mreq_w(offs_t offset, uint8_t data) { }
+ virtual uint8_t iorq_r(offs_t offset) { return 0xff; }
+ virtual void iorq_w(offs_t offset, uint8_t data) { }
+protected:
vtech_memexp_slot_device *m_slot;
};
+// base memory expansion device
+class vtech_memexp_device : public device_t, public device_vtech_memexp_interface
+{
+public:
+ // construction/destruction
+ vtech_memexp_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
+
+ // from host
+ 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;
+
+protected:
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual void device_start() override;
+
+ virtual void mem_map(address_map &map) { };
+ virtual void io_map(address_map &map) { };
+
+ required_device<address_map_bank_device> m_mem;
+ required_device<address_map_bank_device> m_io;
+};
+
// device type definition
DECLARE_DEVICE_TYPE(VTECH_MEMEXP_SLOT, vtech_memexp_slot_device)