mirror of
https://github.com/holub/mame
synced 2025-05-28 16:43:04 +03:00
149 lines
3.9 KiB
C++
149 lines
3.9 KiB
C++
/**********************************************************************
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RCA Cosmac VIP Byte Input/Output port emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************
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A IN 0
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B IN 1
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C IN 2
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D IN 3
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E IN 4
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F IN 5
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H IN 6
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J IN 7
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K INST
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L _EF4
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M OUT 0
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N OUT 1
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P OUT 2
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R OUT 3
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S OUT 4
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T OUT 5
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U OUT 6
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V OUT 7
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W Q
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X _EF3
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Y +5 V
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Z GND
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**********************************************************************/
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#pragma once
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#ifndef __VIP_BYTEIO_PORT__
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#define __VIP_BYTEIO_PORT__
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#include "emu.h"
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//**************************************************************************
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// CONSTANTS
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//**************************************************************************
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#define VIP_BYTEIO_PORT_TAG "byteio"
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//**************************************************************************
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// INTERFACE CONFIGURATION MACROS
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//**************************************************************************
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#define VIP_BYTEIO_PORT_INTERFACE(_name) \
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const vip_byteio_port_interface (_name) =
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#define MCFG_VIP_BYTEIO_PORT_ADD(_tag, _config, _slot_intf, _def_slot, _def_inp) \
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MCFG_DEVICE_ADD(_tag, VIP_BYTEIO_PORT, 0) \
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MCFG_DEVICE_CONFIG(_config) \
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MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, _def_inp, false)
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> vip_byteio_port_interface
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struct vip_byteio_port_interface
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{
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devcb_write_line m_out_inst_cb;
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};
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// ======================> vip_byteio_port_device
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class device_vip_byteio_port_interface;
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class vip_byteio_port_device : public device_t,
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public vip_byteio_port_interface,
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public device_slot_interface
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{
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public:
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// construction/destruction
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vip_byteio_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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virtual ~vip_byteio_port_device();
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// computer interface
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UINT8 in_r();
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void out_w(UINT8 data);
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DECLARE_READ_LINE_MEMBER( ef3_r );
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DECLARE_READ_LINE_MEMBER( ef4_r );
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DECLARE_WRITE_LINE_MEMBER( q_w );
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// cartridge interface
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DECLARE_WRITE_LINE_MEMBER( inst_w );
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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virtual void device_config_complete();
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devcb_resolved_write_line m_out_inst_func;
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device_vip_byteio_port_interface *m_cart;
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};
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// ======================> device_vip_byteio_port_interface
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// class representing interface-specific live c64_expansion card
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class device_vip_byteio_port_interface : public device_slot_card_interface
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{
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public:
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// construction/destruction
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device_vip_byteio_port_interface(const machine_config &mconfig, device_t &device);
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virtual ~device_vip_byteio_port_interface();
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virtual UINT8 vip_in_r() { return 0xff; };
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virtual void vip_out_w(UINT8 data) { };
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virtual int vip_ef3_r() { return CLEAR_LINE; }
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virtual int vip_ef4_r() { return CLEAR_LINE; }
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virtual void vip_q_w(int state) { };
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protected:
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vip_byteio_port_device *m_slot;
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};
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// device type definition
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extern const device_type VIP_BYTEIO_PORT;
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// slot devices
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#include "machine/vp620.h"
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SLOT_INTERFACE_EXTERN( vip_byteio_cards );
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#endif
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