// 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 { public: // construction/destruction template compis_graphics_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, uint32_t 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, uint32_t 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 void dma_request_w(int state) { m_write_dma_request(state); } protected: // device-level overrides virtual void device_start() override ATTR_COLD; 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