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-rw-r--r--src/devices/bus/plus4/exp.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/src/devices/bus/plus4/exp.c b/src/devices/bus/plus4/exp.c
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+++ b/src/devices/bus/plus4/exp.c
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Commodore Plus/4 Expansion Port emulation
+
+**********************************************************************/
+
+#include "exp.h"
+
+
+
+//**************************************************************************
+// MACROS/CONSTANTS
+//**************************************************************************
+
+#define LOG 0
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type PLUS4_EXPANSION_SLOT = &device_creator<plus4_expansion_slot_device>;
+
+
+
+//**************************************************************************
+// DEVICE PLUS4_EXPANSION CARD INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+// device_plus4_expansion_card_interface - constructor
+//-------------------------------------------------
+
+device_plus4_expansion_card_interface::device_plus4_expansion_card_interface(const machine_config &mconfig, device_t &device)
+ : device_slot_card_interface(mconfig, device),
+ m_c1l(*this, "c1l"),
+ m_c1h(*this, "c1h"),
+ m_c2l(*this, "c2l"),
+ m_c2h(*this, "c2h"),
+ m_c1l_mask(0),
+ m_c1h_mask(0),
+ m_c2l_mask(0),
+ m_c2h_mask(0)
+{
+ m_slot = dynamic_cast<plus4_expansion_slot_device *>(device.owner());
+}
+
+
+//-------------------------------------------------
+// ~device_plus4_expansion_card_interface - destructor
+//-------------------------------------------------
+
+device_plus4_expansion_card_interface::~device_plus4_expansion_card_interface()
+{
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// plus4_expansion_slot_device - constructor
+//-------------------------------------------------
+
+plus4_expansion_slot_device::plus4_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, PLUS4_EXPANSION_SLOT, "Expansion Port", tag, owner, clock, "plus4_expansion_slot", __FILE__),
+ device_slot_interface(mconfig, *this),
+ device_image_interface(mconfig, *this),
+ m_write_irq(*this),
+ m_read_dma_cd(*this),
+ m_write_dma_cd(*this),
+ m_write_aec(*this)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void plus4_expansion_slot_device::device_start()
+{
+ m_card = dynamic_cast<device_plus4_expansion_card_interface *>(get_card_device());
+
+ // resolve callbacks
+ m_write_irq.resolve_safe();
+ m_read_dma_cd.resolve_safe(0xff);
+ m_write_dma_cd.resolve_safe();
+ m_write_aec.resolve_safe();
+
+ // inherit bus clock
+ if (clock() == 0)
+ {
+ plus4_expansion_slot_device *root = machine().device<plus4_expansion_slot_device>(PLUS4_EXPANSION_SLOT_TAG);
+ assert(root);
+ set_unscaled_clock(root->clock());
+ }
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void plus4_expansion_slot_device::device_reset()
+{
+ if (get_card_device())
+ {
+ get_card_device()->reset();
+ }
+}
+
+
+//-------------------------------------------------
+// call_load -
+//-------------------------------------------------
+
+bool plus4_expansion_slot_device::call_load()
+{
+ if (m_card)
+ {
+ if (software_entry() == NULL)
+ {
+ // TODO
+ }
+ else
+ {
+ load_software_region("c1l", m_card->m_c1l);
+ load_software_region("c1h", m_card->m_c1h);
+ load_software_region("c2l", m_card->m_c2l);
+ load_software_region("c2h", m_card->m_c2h);
+ }
+ }
+
+ return IMAGE_INIT_PASS;
+}
+
+
+//-------------------------------------------------
+// call_softlist_load -
+//-------------------------------------------------
+
+bool plus4_expansion_slot_device::call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry)
+{
+ load_software_part_region(*this, swlist, swname, start_entry);
+
+ return true;
+}
+
+
+//-------------------------------------------------
+// get_default_card_software -
+//-------------------------------------------------
+
+void plus4_expansion_slot_device::get_default_card_software(std::string &result)
+{
+ software_get_default_slot(result, "standard");
+}
+
+
+//-------------------------------------------------
+// cd_r - cartridge data read
+//-------------------------------------------------
+
+UINT8 plus4_expansion_slot_device::cd_r(address_space &space, offs_t offset, UINT8 data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h)
+{
+ if (m_card != NULL)
+ {
+ data = m_card->plus4_cd_r(space, offset, data, ba, cs0, c1l, c1h, cs1, c2l, c2h);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// cd_w - cartridge data write
+//-------------------------------------------------
+
+void plus4_expansion_slot_device::cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int cs0, int c1l, int c2l, int cs1, int c1h, int c2h)
+{
+ if (m_card != NULL)
+ {
+ m_card->plus4_cd_w(space, offset, data, ba, cs0, c1l, c1h, cs1, c2l, c2h);
+ }
+}
+
+
+//-------------------------------------------------
+// SLOT_INTERFACE( plus4_expansion_cards )
+//-------------------------------------------------
+
+// slot devices
+#include "c1551.h"
+#include "sid.h"
+#include "std.h"
+
+SLOT_INTERFACE_START( plus4_expansion_cards )
+ SLOT_INTERFACE("c1551", C1551)
+ SLOT_INTERFACE("sid", PLUS4_SID)
+
+ // the following need ROMs from the software list
+ SLOT_INTERFACE_INTERNAL("standard", PLUS4_STD)
+SLOT_INTERFACE_END