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-rw-r--r--src/devices/bus/vsmile/rom.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/devices/bus/vsmile/rom.cpp b/src/devices/bus/vsmile/rom.cpp
new file mode 100644
index 00000000000..584a8cfe058
--- /dev/null
+++ b/src/devices/bus/vsmile/rom.cpp
@@ -0,0 +1,86 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+/***********************************************************************************************************
+
+ V.Smile cart emulation
+
+ We support standard carts and one with on-board NVRAM
+
+ ***********************************************************************************************************/
+
+
+#include "emu.h"
+#include "rom.h"
+
+
+//-------------------------------------------------
+// vsmile_rom_device - constructor
+//-------------------------------------------------
+
+DEFINE_DEVICE_TYPE(VSMILE_ROM_STD, vsmile_rom_device, "vsmile_rom", "V.Smile Cart")
+DEFINE_DEVICE_TYPE(VSMILE_ROM_NVRAM, vsmile_rom_nvram_device, "vsmile_rom_nvram", "V.Smile Cart + NVRAM")
+
+
+vsmile_rom_device::vsmile_rom_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_vsmile_cart_interface(mconfig, *this)
+{
+}
+
+vsmile_rom_device::vsmile_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : vsmile_rom_device(mconfig, VSMILE_ROM_STD, tag, owner, clock)
+{
+}
+
+vsmile_rom_nvram_device::vsmile_rom_nvram_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
+ : vsmile_rom_device(mconfig, type, tag, owner, clock)
+{
+}
+
+vsmile_rom_nvram_device::vsmile_rom_nvram_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : vsmile_rom_nvram_device(mconfig, VSMILE_ROM_NVRAM, tag, owner, clock)
+{
+}
+
+
+//-------------------------------------------------
+// mapper specific start/reset
+//-------------------------------------------------
+
+void vsmile_rom_device::device_start()
+{
+ save_item(NAME(m_bank_offset));
+}
+
+void vsmile_rom_device::device_reset()
+{
+ m_bank_offset = 0;
+}
+
+
+/*-------------------------------------------------
+ Cart with NVRAM
+ -------------------------------------------------*/
+
+READ16_MEMBER(vsmile_rom_nvram_device::bank2_r)
+{
+ if (!m_nvram.empty() && offset < m_nvram.size())
+ return m_nvram[offset];
+ else // this cannot actually happen...
+ return 0;
+}
+
+WRITE16_MEMBER(vsmile_rom_nvram_device::bank2_w)
+{
+ if (!m_nvram.empty() && offset < m_nvram.size())
+ COMBINE_DATA(&m_nvram[offset]);
+}
+
+/*-------------------------------------------------
+ CS2 bankswitching
+ -------------------------------------------------*/
+
+void vsmile_rom_device::set_cs2(bool cs2)
+{
+ m_bank_offset = cs2 ? 0x400000 : 0x000000;
+}