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Diffstat (limited to 'src/devices/bus/vtech/ioexp/ioexp.cpp')
-rw-r--r--src/devices/bus/vtech/ioexp/ioexp.cpp73
1 files changed, 70 insertions, 3 deletions
diff --git a/src/devices/bus/vtech/ioexp/ioexp.cpp b/src/devices/bus/vtech/ioexp/ioexp.cpp
index 27a517fabb1..475f287201e 100644
--- a/src/devices/bus/vtech/ioexp/ioexp.cpp
+++ b/src/devices/bus/vtech/ioexp/ioexp.cpp
@@ -1,5 +1,5 @@
-// license:GPL-2.0+
-// copyright-holders:Dirk Best
+// license: GPL-2.0+
+// copyright-holders: Dirk Best
/***************************************************************************
VTech Laser/VZ I/O Expansion Slot
@@ -30,7 +30,7 @@ DEFINE_DEVICE_TYPE(VTECH_IOEXP_SLOT, vtech_ioexp_slot_device, "vtech_ioexp_slot"
vtech_ioexp_slot_device::vtech_ioexp_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, VTECH_IOEXP_SLOT, tag, owner, clock),
device_single_card_slot_interface<device_vtech_ioexp_interface>(mconfig, *this),
- m_io(*this, finder_base::DUMMY_TAG, -1)
+ m_iospace(*this, finder_base::DUMMY_TAG, -1)
{
}
@@ -48,6 +48,24 @@ vtech_ioexp_slot_device::~vtech_ioexp_slot_device()
void vtech_ioexp_slot_device::device_start()
{
+ // get inserted module
+ m_module = get_card_device();
+
+ // install io access taps
+ m_iospace->install_readwrite_tap
+ (
+ 0x00, 0xff, "io_tap",
+ [this](offs_t offset, uint8_t &data, uint8_t mem_mask)
+ {
+ if (m_module)
+ data &= m_module->iorq_r(offset);
+ },
+ [this](offs_t offset, uint8_t &data, uint8_t mem_mask)
+ {
+ if (m_module)
+ m_module->iorq_w(offset, data);
+ }
+ );
}
@@ -72,3 +90,52 @@ device_vtech_ioexp_interface::device_vtech_ioexp_interface(const machine_config
device_vtech_ioexp_interface::~device_vtech_ioexp_interface()
{
}
+
+
+//**************************************************************************
+// BASE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// vtech_ioexp_device - constructor
+//-------------------------------------------------
+
+vtech_ioexp_device::vtech_ioexp_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, type, tag, owner, clock),
+ device_vtech_ioexp_interface(mconfig, *this),
+ m_io(*this, "iospace")
+{
+}
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void vtech_ioexp_device::device_add_mconfig(machine_config &config)
+{
+ ADDRESS_MAP_BANK(config, m_io);
+ m_io->set_addrmap(AS_PROGRAM, &vtech_ioexp_device::io_map);
+ m_io->set_data_width(8);
+ m_io->set_addr_width(16);
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void vtech_ioexp_device::device_start()
+{
+ // silence unmapped warnings, or we'll get them for everything the
+ // expansion device doesn't handle
+ m_io->set_log_unmap(false);
+}
+
+uint8_t vtech_ioexp_device::iorq_r(offs_t offset)
+{
+ return m_io->read8(offset);
+}
+
+void vtech_ioexp_device::iorq_w(offs_t offset, uint8_t data)
+{
+ m_io->write8(offset, data);
+}