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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
TeleNova Compis graphics bus emulation
**********************************************************************
**********************************************************************/
#ifndef MAME_BUS_COMPIS_GRAPHICS_H
#define MAME_BUS_COMPIS_GRAPHICS_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> device_compis_graphics_card_interface
class compis_graphics_slot_device;
class device_compis_graphics_card_interface : public device_interface
{
public:
virtual uint8_t mcs0_r(offs_t offset) { return 0xff; }
virtual void mcs0_w(offs_t offset, uint8_t data) { }
virtual uint8_t mcs1_r(offs_t offset) { return 0xff; }
virtual void mcs1_w(offs_t offset, uint8_t data) { }
virtual uint16_t pcs3_r(offs_t offset) { return 0xff; }
virtual void pcs3_w(offs_t offset, uint16_t data) { }
virtual uint8_t pcs6_6_r(offs_t offset) { return 0xff; }
virtual void pcs6_6_w(offs_t offset, uint8_t data) { }
virtual uint8_t dma_ack_r(offs_t offset) { return 0xff; }
virtual void dma_ack_w(offs_t offset, uint8_t data) { }
protected:
// construction/destruction
device_compis_graphics_card_interface(const machine_config &mconfig, device_t &device);
compis_graphics_slot_device *m_slot;
};
// ======================> compis_graphics_slot_device
class compis_graphics_slot_device : public device_t, public device_single_card_slot_interface<device_compis_graphics_card_interface>
{
public:
// construction/destruction
template <typename T>
compis_graphics_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, const XTAL &clock, T &&opts, char const *dflt)
: compis_graphics_slot_device(mconfig, tag, owner, clock)
{
option_reset();
opts(*this);
set_default_option(dflt);
set_fixed(false);
}
compis_graphics_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
auto drq() { return m_write_dma_request.bind(); }
// computer interface
uint8_t mcs0_r(offs_t offset) { return m_card ? m_card->mcs0_r(offset) : 0xff; }
void mcs0_w(offs_t offset, uint8_t data) { if (m_card) m_card->mcs0_w(offset, data); }
uint8_t mcs1_r(offs_t offset) { return m_card ? m_card->mcs1_r(offset) : 0xff; }
void mcs1_w(offs_t offset, uint8_t data) { if (m_card) m_card->mcs1_w(offset, data); }
uint8_t pcs3_r(offs_t offset) { return m_card ? m_card->pcs3_r(offset) : 0xff; }
void pcs3_w(offs_t offset, uint8_t data) { if (m_card) m_card->pcs3_w(offset, data); }
uint8_t pcs6_6_r(offs_t offset) { return m_card ? m_card->pcs6_6_r(offset) : 0xff; }
void pcs6_6_w(offs_t offset, uint8_t data) { if (m_card) m_card->pcs6_6_w(offset, data); }
uint8_t dma_ack_r(offs_t offset) { return m_card ? m_card->dma_ack_r(offset) : 0xff; }
void dma_ack_w(offs_t offset, uint8_t data) { if (m_card) m_card->dma_ack_w(offset, data); }
// card interface
DECLARE_WRITE_LINE_MEMBER( dma_request_w ) { m_write_dma_request(state); }
protected:
// device-level overrides
virtual void device_start() override;
devcb_write_line m_write_dma_request;
device_compis_graphics_card_interface *m_card;
};
// device type definition
DECLARE_DEVICE_TYPE(COMPIS_GRAPHICS_SLOT, compis_graphics_slot_device)
void compis_graphics_cards(device_slot_interface &device);
#endif // MAME_BUS_COMPIS_GRAPHICS_H
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