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Diffstat (limited to 'src/devices/bus/vtech/memexp/rs232.cpp')
-rw-r--r--src/devices/bus/vtech/memexp/rs232.cpp50
1 files changed, 26 insertions, 24 deletions
diff --git a/src/devices/bus/vtech/memexp/rs232.cpp b/src/devices/bus/vtech/memexp/rs232.cpp
index 959ef7d1adc..cf07b2055d6 100644
--- a/src/devices/bus/vtech/memexp/rs232.cpp
+++ b/src/devices/bus/vtech/memexp/rs232.cpp
@@ -17,12 +17,28 @@
DEFINE_DEVICE_TYPE(VTECH_RS232_INTERFACE, vtech_rs232_interface_device, "vtech_rs232", "DSE VZ-200/300 RS-232 Interface")
//-------------------------------------------------
+// mem_map - memory space address map
+//-------------------------------------------------
+
+void vtech_rs232_interface_device::mem_map(address_map &map)
+{
+ map.unmap_value_high();
+ map(0x4000, 0x47ff).rom().region("software", 0);
+ map(0x5000, 0x5000).mirror(0x7ff).r(FUNC(vtech_rs232_interface_device::receive_data_r));
+ map(0x5800, 0x5800).mirror(0x7ff).w(FUNC(vtech_rs232_interface_device::transmit_data_w));
+}
+
+//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
ROM_START( rs232 )
ROM_REGION(0x800, "software", 0)
- ROM_LOAD("rs232_v15.ic2", 0x000, 0x800, CRC(6545260d) SHA1(4042f6f1e09e383f3c92f628c6187dc5f072fdb2))
+ ROM_DEFAULT_BIOS("16")
+ ROM_SYSTEM_BIOS(0, "15", "Version 1.5") // 1985
+ ROMX_LOAD("rs232_v15.ic2", 0x000, 0x800, CRC(6545260d) SHA1(4042f6f1e09e383f3c92f628c6187dc5f072fdb2), ROM_BIOS(0))
+ ROM_SYSTEM_BIOS(1, "16", "Version 1.6") // 1987
+ ROMX_LOAD("rs232_v16.ic2", 0x000, 0x800, CRC(d761fc79) SHA1(28e00c7ff33143a948308330859bee54b474e114), ROM_BIOS(1))
ROM_END
const tiny_rom_entry *vtech_rs232_interface_device::device_rom_region() const
@@ -36,8 +52,10 @@ const tiny_rom_entry *vtech_rs232_interface_device::device_rom_region() const
void vtech_rs232_interface_device::device_add_mconfig(machine_config &config)
{
+ vtech_memexp_device::device_add_mconfig(config);
+
RS232_PORT(config, m_rs232, default_rs232_devices, nullptr);
- m_rs232->rxd_handler().set(FUNC(vtech_rs232_interface_device::rs232_rx_w));
+ m_rs232->rxd_handler().set([this](int state) { m_rx = state; });
}
@@ -50,8 +68,7 @@ void vtech_rs232_interface_device::device_add_mconfig(machine_config &config)
//-------------------------------------------------
vtech_rs232_interface_device::vtech_rs232_interface_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
- device_t(mconfig, VTECH_RS232_INTERFACE, tag, owner, clock),
- device_vtech_memexp_interface(mconfig, *this),
+ vtech_memexp_device(mconfig, VTECH_RS232_INTERFACE, tag, owner, clock),
m_rs232(*this, "rs232"),
m_rx(1)
{
@@ -63,20 +80,10 @@ vtech_rs232_interface_device::vtech_rs232_interface_device(const machine_config
void vtech_rs232_interface_device::device_start()
{
-}
-
-//-------------------------------------------------
-// device_reset - device-specific reset
-//-------------------------------------------------
-
-void vtech_rs232_interface_device::device_reset()
-{
- // program
- program_space().install_rom(0x4000, 0x47ff, 0x800, memregion("software")->base());
+ vtech_memexp_device::device_start();
- // data
- program_space().install_read_handler(0x5000, 0x57ff, read8_delegate(*this, FUNC(vtech_rs232_interface_device::receive_data_r)));
- program_space().install_write_handler(0x5800, 0x5fff, write8_delegate(*this, FUNC(vtech_rs232_interface_device::transmit_data_w)));
+ // register for save states
+ save_item(NAME(m_rx));
}
@@ -84,17 +91,12 @@ void vtech_rs232_interface_device::device_reset()
// IMPLEMENTATION
//**************************************************************************
-WRITE_LINE_MEMBER( vtech_rs232_interface_device::rs232_rx_w )
-{
- m_rx = state;
-}
-
-READ8_MEMBER( vtech_rs232_interface_device::receive_data_r )
+uint8_t vtech_rs232_interface_device::receive_data_r()
{
return 0x7f | (m_rx << 7);
}
-WRITE8_MEMBER( vtech_rs232_interface_device::transmit_data_w )
+void vtech_rs232_interface_device::transmit_data_w(uint8_t data)
{
m_rs232->write_txd(!BIT(data, 7));
}