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-rw-r--r--src/devices/bus/pet/exp.h139
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diff --git a/src/devices/bus/pet/exp.h b/src/devices/bus/pet/exp.h
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Commodore PET Memory Expansion Port emulation
+
+**********************************************************************
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __PET_EXPANSION_SLOT__
+#define __PET_EXPANSION_SLOT__
+
+#include "emu.h"
+
+
+
+//**************************************************************************
+// CONSTANTS
+//**************************************************************************
+
+#define PET_EXPANSION_SLOT_TAG "exp"
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_PET_EXPANSION_SLOT_ADD(_tag, _clock, _slot_intf, _def_slot) \
+ MCFG_DEVICE_ADD(_tag, PET_EXPANSION_SLOT, _clock) \
+ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
+
+
+#define MCFG_PET_EXPANSION_SLOT_DMA_CALLBACKS(_read, _write) \
+ downcast<pet_expansion_slot_device *>(device)->set_callbacks(DEVCB_##_read, DEVCB_##_write);
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> pet_expansion_slot_device
+
+class device_pet_expansion_card_interface;
+
+class pet_expansion_slot_device : public device_t,
+ public device_slot_interface
+{
+public:
+ // construction/destruction
+ pet_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+ virtual ~pet_expansion_slot_device();
+
+ template<class _read, class _write> void set_callbacks(_read rd, _write wr) {
+ m_read_dma.set_callback(rd);
+ m_write_dma.set_callback(wr);
+ }
+
+ // computer interface
+ int norom_r(address_space &space, offs_t offset, int sel);
+ UINT8 read(address_space &space, offs_t offset, UINT8 data, int &sel);
+ void write(address_space &space, offs_t offset, UINT8 data, int &sel);
+ DECLARE_READ_LINE_MEMBER( diag_r );
+ DECLARE_WRITE_LINE_MEMBER( irq_w );
+
+ // cartridge interface
+ UINT8 dma_bd_r(offs_t offset);
+ void dma_bd_w(offs_t offset, UINT8 data);
+ int phi2();
+
+ enum
+ {
+ SEL_NONE = -1,
+ SEL0 = 0,
+ SEL1,
+ SEL2,
+ SEL3,
+ SEL4,
+ SEL5,
+ SEL6,
+ SEL7,
+ SEL8,
+ SEL9,
+ SELA,
+ SELB,
+ SELC,
+ SELD,
+ SELE,
+ SELF
+ };
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ device_pet_expansion_card_interface *m_card;
+
+ devcb_read8 m_read_dma;
+ devcb_write8 m_write_dma;
+};
+
+
+// ======================> device_pet_expansion_card_interface
+
+class device_pet_expansion_card_interface : public device_slot_card_interface
+{
+ friend class pet_expansion_slot_device;
+
+public:
+ // construction/destruction
+ device_pet_expansion_card_interface(const machine_config &mconfig, device_t &device);
+ virtual ~device_pet_expansion_card_interface();
+
+protected:
+ // runtime
+ virtual int pet_norom_r(address_space &space, offs_t offset, int sel) { return 1; }
+ virtual UINT8 pet_bd_r(address_space &space, offs_t offset, UINT8 data, int &sel) { return data; };
+ virtual void pet_bd_w(address_space &space, offs_t offset, UINT8 data, int &sel) { };
+ virtual int pet_diag_r() { return 1; }
+ virtual void pet_irq_w(int state) { }
+
+ pet_expansion_slot_device *m_slot;
+};
+
+
+// device type definition
+extern const device_type PET_EXPANSION_SLOT;
+
+
+SLOT_INTERFACE_EXTERN( pet_expansion_cards );
+
+
+
+#endif