// license:BSD-3-Clause // copyright-holders:Nigel Barnes /********************************************************************** Master Extra User Port **********************************************************************/ #include "emu.h" #include "meup.h" #include "bus/bbc/userport/userport.h" #include "machine/6522via.h" namespace { class bbc_meup_device: public device_t, public device_bbc_modem_interface { public: bbc_meup_device(const machine_config &mconfig, const char* tag, device_t* owner, uint32_t clock) : device_t(mconfig, BBC_MEUP, tag, owner, clock) , device_bbc_modem_interface(mconfig, *this) , m_via(*this, "via") { } protected: // device_t overrides virtual void device_start() override ATTR_COLD { } // optional information overrides virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; virtual uint8_t read(offs_t offset) override { return m_via->read(offset); } virtual void write(offs_t offset, uint8_t data) override { m_via->write(offset, data); } private: required_device m_via; }; //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void bbc_meup_device::device_add_mconfig(machine_config &config) { MOS6522(config, m_via, DERIVED_CLOCK(1, 1)); m_via->readpb_handler().set("userport2", FUNC(bbc_userport_slot_device::pb_r)); m_via->writepb_handler().set("userport2", FUNC(bbc_userport_slot_device::pb_w)); m_via->cb1_handler().set("userport2", FUNC(bbc_userport_slot_device::write_cb1)); m_via->cb2_handler().set("userport2", FUNC(bbc_userport_slot_device::write_cb2)); m_via->irq_handler().set(DEVICE_SELF_OWNER, FUNC(bbc_modem_slot_device::irq_w)); bbc_userport_slot_device &userport2(BBC_USERPORT_SLOT(config, "userport2", bbc_userport_devices, nullptr)); userport2.cb1_handler().set(m_via, FUNC(via6522_device::write_cb1)); userport2.cb2_handler().set(m_via, FUNC(via6522_device::write_cb2)); } } // anonymous namespace DEFINE_DEVICE_TYPE_PRIVATE(BBC_MEUP, device_bbc_modem_interface, bbc_meup_device, "bbc_meup", "Master Extra User Port");