summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/snes/snes_slot.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/snes/snes_slot.cpp')
-rw-r--r--src/devices/bus/snes/snes_slot.cpp51
1 files changed, 33 insertions, 18 deletions
diff --git a/src/devices/bus/snes/snes_slot.cpp b/src/devices/bus/snes/snes_slot.cpp
index f85f198f257..7af674e9f6d 100644
--- a/src/devices/bus/snes/snes_slot.cpp
+++ b/src/devices/bus/snes/snes_slot.cpp
@@ -177,6 +177,18 @@ WRITE_LINE_MEMBER(device_sns_cart_interface::write_irq)
m_slot->write_irq(state);
}
+//-------------------------------------------------
+// read_open_bus - read from the open bus
+//-------------------------------------------------
+
+uint8_t device_sns_cart_interface::read_open_bus()
+{
+ if (m_slot != nullptr)
+ return m_slot->read_open_bus();
+
+ return 0xff;
+}
+
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
@@ -191,7 +203,8 @@ base_sns_cart_slot_device::base_sns_cart_slot_device(const machine_config &mconf
m_addon(ADDON_NONE),
m_type(SNES_MODE20),
m_cart(nullptr),
- m_irq_callback(*this)
+ m_irq_callback(*this),
+ m_open_bus_callback(*this)
{
}
@@ -225,9 +238,11 @@ base_sns_cart_slot_device::~base_sns_cart_slot_device()
void base_sns_cart_slot_device::device_start()
{
m_cart = dynamic_cast<device_sns_cart_interface *>(get_card_device());
- m_cart->m_slot = this;
+ if (m_cart != nullptr)
+ m_cart->m_slot = this;
m_irq_callback.resolve_safe();
+ m_open_bus_callback.resolve_safe(0xff);
}
@@ -1060,34 +1075,34 @@ std::string base_sns_cart_slot_device::get_default_card_software(get_default_car
read
-------------------------------------------------*/
-READ8_MEMBER(base_sns_cart_slot_device::read_l)
+uint8_t base_sns_cart_slot_device::read_l(offs_t offset)
{
if (m_cart)
- return m_cart->read_l(space, offset);
+ return m_cart->read_l(offset);
else
return 0xff;
}
-READ8_MEMBER(base_sns_cart_slot_device::read_h)
+uint8_t base_sns_cart_slot_device::read_h(offs_t offset)
{
if (m_cart)
- return m_cart->read_h(space, offset);
+ return m_cart->read_h(offset);
else
return 0xff;
}
-READ8_MEMBER(base_sns_cart_slot_device::read_ram)
+uint8_t base_sns_cart_slot_device::read_ram(offs_t offset)
{
if (m_cart)
- return m_cart->read_ram(space, offset);
+ return m_cart->read_ram(offset);
else
return 0xff;
}
-READ8_MEMBER(base_sns_cart_slot_device::chip_read)
+uint8_t base_sns_cart_slot_device::chip_read(offs_t offset)
{
if (m_cart)
- return m_cart->chip_read(space, offset);
+ return m_cart->chip_read(offset);
else
return 0xff;
}
@@ -1096,28 +1111,28 @@ READ8_MEMBER(base_sns_cart_slot_device::chip_read)
write
-------------------------------------------------*/
-WRITE8_MEMBER(base_sns_cart_slot_device::write_l)
+void base_sns_cart_slot_device::write_l(offs_t offset, uint8_t data)
{
if (m_cart)
- m_cart->write_l(space, offset, data);
+ m_cart->write_l(offset, data);
}
-WRITE8_MEMBER(base_sns_cart_slot_device::write_h)
+void base_sns_cart_slot_device::write_h(offs_t offset, uint8_t data)
{
if (m_cart)
- m_cart->write_h(space, offset, data);
+ m_cart->write_h(offset, data);
}
-WRITE8_MEMBER(base_sns_cart_slot_device::write_ram)
+void base_sns_cart_slot_device::write_ram(offs_t offset, uint8_t data)
{
if (m_cart)
- m_cart->write_ram(space, offset, data);
+ m_cart->write_ram(offset, data);
}
-WRITE8_MEMBER(base_sns_cart_slot_device::chip_write)
+void base_sns_cart_slot_device::chip_write(offs_t offset, uint8_t data)
{
if (m_cart)
- m_cart->chip_write(space, offset, data);
+ m_cart->chip_write(offset, data);
}