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-rw-r--r--src/devices/bus/vidbrain/exp.cpp206
1 files changed, 206 insertions, 0 deletions
diff --git a/src/devices/bus/vidbrain/exp.cpp b/src/devices/bus/vidbrain/exp.cpp
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+++ b/src/devices/bus/vidbrain/exp.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ VideoBrain Expansion Port emulation
+
+**********************************************************************/
+
+#include "exp.h"
+
+
+
+//**************************************************************************
+// MACROS/CONSTANTS
+//**************************************************************************
+
+#define LOG 0
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type VIDEOBRAIN_EXPANSION_SLOT = &device_creator<videobrain_expansion_slot_device>;
+
+
+
+//**************************************************************************
+// DEVICE VIDEOBRAIN_EXPANSION CARD INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+// device_videobrain_expansion_card_interface - constructor
+//-------------------------------------------------
+
+device_videobrain_expansion_card_interface::device_videobrain_expansion_card_interface(const machine_config &mconfig, device_t &device) :
+ device_slot_card_interface(mconfig, device),
+ m_rom_mask(0),
+ m_ram_mask(0)
+{
+ m_slot = dynamic_cast<videobrain_expansion_slot_device *>(device.owner());
+}
+
+
+//-------------------------------------------------
+// videobrain_roml_pointer - get low ROM pointer
+//-------------------------------------------------
+
+UINT8* device_videobrain_expansion_card_interface::videobrain_rom_pointer(running_machine &machine, size_t size)
+{
+ if (m_rom.empty())
+ {
+ m_rom.resize(size);
+
+ m_rom_mask = size - 1;
+ }
+
+ return &m_rom[0];
+}
+
+
+//-------------------------------------------------
+// videobrain_ram_pointer - get RAM pointer
+//-------------------------------------------------
+
+UINT8* device_videobrain_expansion_card_interface::videobrain_ram_pointer(running_machine &machine, size_t size)
+{
+ if (m_ram.empty())
+ {
+ m_ram.resize(size);
+
+ m_ram_mask = size - 1;
+ }
+
+ return &m_ram[0];
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// videobrain_expansion_slot_device - constructor
+//-------------------------------------------------
+
+videobrain_expansion_slot_device::videobrain_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, VIDEOBRAIN_EXPANSION_SLOT, "VideoBrain expansion port", tag, owner, clock, "videobrain_expansion_slot", __FILE__),
+ device_slot_interface(mconfig, *this),
+ device_image_interface(mconfig, *this),
+ m_write_extres(*this)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void videobrain_expansion_slot_device::device_start()
+{
+ m_cart = dynamic_cast<device_videobrain_expansion_card_interface *>(get_card_device());
+
+ // resolve callbacks
+ m_write_extres.resolve_safe();
+}
+
+
+//-------------------------------------------------
+// call_load -
+//-------------------------------------------------
+
+bool videobrain_expansion_slot_device::call_load()
+{
+ if (m_cart)
+ {
+ size_t size = 0;
+
+ if (software_entry() == NULL)
+ {
+ size = length();
+
+ fread(m_cart->videobrain_rom_pointer(machine(), size), size);
+ }
+ else
+ {
+ size = get_software_region_length("rom");
+ if (size) memcpy(m_cart->videobrain_rom_pointer(machine(), size), get_software_region("rom"), size);
+
+ size = get_software_region_length("ram");
+ if (size) memset(m_cart->videobrain_ram_pointer(machine(), size), 0, size);
+ }
+ }
+
+ return IMAGE_INIT_PASS;
+}
+
+
+//-------------------------------------------------
+// call_softlist_load -
+//-------------------------------------------------
+
+bool videobrain_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 videobrain_expansion_slot_device::get_default_card_software(std::string &result)
+{
+ software_get_default_slot(result, "standard");
+}
+
+
+//-------------------------------------------------
+// bo_r - cartridge data read
+//-------------------------------------------------
+
+UINT8 videobrain_expansion_slot_device::bo_r(address_space &space, offs_t offset, int cs1, int cs2)
+{
+ UINT8 data = 0;
+
+ if (m_cart != NULL)
+ {
+ data = m_cart->videobrain_bo_r(space, offset, cs1, cs2);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// bo_w - cartridge data write
+//-------------------------------------------------
+
+void videobrain_expansion_slot_device::bo_w(address_space &space, offs_t offset, UINT8 data, int cs1, int cs2)
+{
+ if (m_cart != NULL)
+ {
+ m_cart->videobrain_bo_w(space, offset, data, cs1, cs2);
+ }
+}
+
+
+//-------------------------------------------------
+// SLOT_INTERFACE_START( vidbrain_expansion_cards )
+//-------------------------------------------------
+
+// slot devices
+#include "std.h"
+#include "money_minder.h"
+#include "timeshare.h"
+
+SLOT_INTERFACE_START( vidbrain_expansion_cards )
+ SLOT_INTERFACE_INTERNAL("standard", VB_STD)
+ SLOT_INTERFACE_INTERNAL("moneyminder", VB_MONEY_MINDER)
+ SLOT_INTERFACE_INTERNAL("timeshare", VB_TIMESHARE)
+SLOT_INTERFACE_END