mirror of
https://github.com/holub/mame
synced 2025-10-05 08:41:31 +03:00
afa6a83728
The goals with this change is to make get_default_card_software() a bit more standalone by making it a const method that does not mutate the state of the device_image_interface. This is done by passing in a small structure that encapsulates the minimum of information that get_default_card_software() needs. This also eliminates the need for device_image_interface::open_image_file() I agree with Sarayan that get_default_card_software() is terrible and needs to ultimately go away. This is a small step in that direction. Lastly, I don't care for the name of get_default_card_software_hook (or get_default_card_software() for that matter). If anybody has better ideas, let me know.
199 lines
5.4 KiB
C++
199 lines
5.4 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Curt Coder
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/**********************************************************************
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Commodore Plus/4 Expansion Port emulation
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**********************************************************************/
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#include "emu.h"
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#include "exp.h"
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//**************************************************************************
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// MACROS/CONSTANTS
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//**************************************************************************
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#define LOG 0
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type PLUS4_EXPANSION_SLOT = device_creator<plus4_expansion_slot_device>;
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//**************************************************************************
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// DEVICE PLUS4_EXPANSION CARD INTERFACE
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//**************************************************************************
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//-------------------------------------------------
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// device_plus4_expansion_card_interface - constructor
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//-------------------------------------------------
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device_plus4_expansion_card_interface::device_plus4_expansion_card_interface(const machine_config &mconfig, device_t &device)
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: device_slot_card_interface(mconfig, device),
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m_c1l(*this, "c1l"),
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m_c1h(*this, "c1h"),
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m_c2l(*this, "c2l"),
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m_c2h(*this, "c2h"),
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m_c1l_mask(0),
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m_c1h_mask(0),
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m_c2l_mask(0),
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m_c2h_mask(0)
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{
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m_slot = dynamic_cast<plus4_expansion_slot_device *>(device.owner());
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}
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//-------------------------------------------------
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// ~device_plus4_expansion_card_interface - destructor
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//-------------------------------------------------
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device_plus4_expansion_card_interface::~device_plus4_expansion_card_interface()
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{
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// plus4_expansion_slot_device - constructor
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//-------------------------------------------------
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plus4_expansion_slot_device::plus4_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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device_t(mconfig, PLUS4_EXPANSION_SLOT, "Expansion Port", tag, owner, clock, "plus4_expansion_slot", __FILE__),
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device_slot_interface(mconfig, *this),
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device_image_interface(mconfig, *this),
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m_write_irq(*this),
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m_read_dma_cd(*this),
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m_write_dma_cd(*this),
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m_write_aec(*this), m_card(nullptr)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void plus4_expansion_slot_device::device_start()
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{
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m_card = dynamic_cast<device_plus4_expansion_card_interface *>(get_card_device());
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// resolve callbacks
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m_write_irq.resolve_safe();
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m_read_dma_cd.resolve_safe(0xff);
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m_write_dma_cd.resolve_safe();
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m_write_aec.resolve_safe();
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// inherit bus clock
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if (clock() == 0)
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{
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plus4_expansion_slot_device *root = machine().device<plus4_expansion_slot_device>(PLUS4_EXPANSION_SLOT_TAG);
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assert(root);
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set_unscaled_clock(root->clock());
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}
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void plus4_expansion_slot_device::device_reset()
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{
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if (get_card_device())
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{
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get_card_device()->reset();
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}
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}
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//-------------------------------------------------
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// call_load -
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//-------------------------------------------------
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image_init_result plus4_expansion_slot_device::call_load()
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{
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if (m_card)
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{
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if (!loaded_through_softlist())
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{
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// TODO
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}
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else
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{
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load_software_region("c1l", m_card->m_c1l);
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load_software_region("c1h", m_card->m_c1h);
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load_software_region("c2l", m_card->m_c2l);
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load_software_region("c2h", m_card->m_c2h);
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}
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}
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return image_init_result::PASS;
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}
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//-------------------------------------------------
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// get_default_card_software -
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//-------------------------------------------------
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std::string plus4_expansion_slot_device::get_default_card_software(get_default_card_software_hook &hook) const
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{
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return software_get_default_slot("standard");
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}
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//-------------------------------------------------
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// cd_r - cartridge data read
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//-------------------------------------------------
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uint8_t plus4_expansion_slot_device::cd_r(address_space &space, offs_t offset, uint8_t data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h)
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{
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if (m_card != nullptr)
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{
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data = m_card->plus4_cd_r(space, offset, data, ba, cs0, c1l, c1h, cs1, c2l, c2h);
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}
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return data;
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}
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//-------------------------------------------------
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// cd_w - cartridge data write
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//-------------------------------------------------
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void plus4_expansion_slot_device::cd_w(address_space &space, offs_t offset, uint8_t data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h)
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{
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if (m_card != nullptr)
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{
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m_card->plus4_cd_w(space, offset, data, ba, cs0, c1l, c1h, cs1, c2l, c2h);
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}
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}
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//-------------------------------------------------
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// SLOT_INTERFACE( plus4_expansion_cards )
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//-------------------------------------------------
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// slot devices
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#include "c1551.h"
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#include "sid.h"
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#include "std.h"
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SLOT_INTERFACE_START( plus4_expansion_cards )
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SLOT_INTERFACE("c1551", C1551)
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SLOT_INTERFACE("sid", PLUS4_SID)
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// the following need ROMs from the software list
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SLOT_INTERFACE_INTERNAL("standard", PLUS4_STD)
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SLOT_INTERFACE_END
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