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Diffstat (limited to 'src/devices/bus/msx/cart/halnote.cpp')
-rw-r--r--src/devices/bus/msx/cart/halnote.cpp121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/devices/bus/msx/cart/halnote.cpp b/src/devices/bus/msx/cart/halnote.cpp
new file mode 100644
index 00000000000..ffe6d883b16
--- /dev/null
+++ b/src/devices/bus/msx/cart/halnote.cpp
@@ -0,0 +1,121 @@
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
+#include "emu.h"
+#include "halnote.h"
+
+namespace {
+
+class msx_cart_halnote_device : public device_t, public msx_cart_interface
+{
+public:
+ msx_cart_halnote_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, MSX_CART_HALNOTE, tag, owner, clock)
+ , msx_cart_interface(mconfig, *this)
+ , m_rombank(*this, "rombank%u", 0U)
+ , m_view{ {*this, "view0"}, {*this, "view1"} }
+ { }
+
+ virtual std::error_condition initialize_cartridge(std::string &message) override;
+
+protected:
+ // device_t implementation
+ virtual void device_start() override { }
+ virtual void device_reset() override ATTR_COLD;
+
+private:
+ static constexpr u8 BANK_MASK = (0x100000 / 0x2000) - 1;
+
+ template <int Bank> void bank_w(u8 data);
+ void bank0_w(u8 data);
+ void bank1_w(u8 data);
+ void bank2_w(u8 data);
+ void bank3_w(u8 data);
+ template <int Bank> void bank_small_w(u8 data);
+
+ memory_bank_array_creator<6> m_rombank;
+ memory_view m_view[2];
+};
+
+void msx_cart_halnote_device::device_reset()
+{
+ for (int i = 0; i < 6; i++)
+ m_rombank[i]->set_entry(0);
+
+ m_view[0].disable();
+ m_view[1].select(0);
+}
+
+std::error_condition msx_cart_halnote_device::initialize_cartridge(std::string &message)
+{
+ if (!cart_rom_region())
+ {
+ message = "msx_cart_halnote_device: Required region 'rom' was not found.";
+ return image_error::INTERNAL;
+ }
+
+ if (!cart_sram_region())
+ {
+ message = "msx_cart_halnote_device: Required region 'sram' was not found.";
+ return image_error::INTERNAL;
+ }
+
+ if (cart_rom_region()->bytes() != 0x100000)
+ {
+ message = "msx_cart_halnote_device: Region 'rom' has unsupported size.";
+ return image_error::INVALIDLENGTH;
+ }
+
+ if (cart_sram_region()->bytes() < 0x4000)
+ {
+ message = "msx_cart_halnote_device: Region 'sram' has unsupported size.";
+ return image_error::BADSOFTWARE;
+ }
+
+ for (int i = 0; i < 4; i++)
+ {
+ m_rombank[i]->configure_entries(0, 0x80, cart_rom_region()->base(), 0x2000);
+ }
+ m_rombank[4]->configure_entries(0, 0x100, cart_rom_region()->base() + 0x80000, 0x800);
+ m_rombank[5]->configure_entries(0, 0x100, cart_rom_region()->base() + 0x80000, 0x800);
+
+ page(0)->install_view(0x0000, 0x3fff, m_view[0]);
+ m_view[0][0];
+ m_view[0][1].install_ram(0x0000, 0x3fff, cart_sram_region()->base());
+ page(1)->install_read_bank(0x4000, 0x5fff, m_rombank[0]);
+ page(1)->install_write_handler(0x4fff, 0x4fff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_w<0>)));
+ page(1)->install_view(0x6000, 0x7fff, m_view[1]);
+ m_view[1][0].install_read_bank(0x6000, 0x7fff, m_rombank[1]);
+ m_view[1][0].install_write_handler(0x6fff, 0x6fff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_w<1>)));
+ m_view[1][0].install_write_handler(0x77ff, 0x77ff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_small_w<4>)));
+ m_view[1][0].install_write_handler(0x7fff, 0x7fff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_small_w<5>)));
+ m_view[1][1].install_read_bank(0x6000, 0x6fff, m_rombank[1]);
+ m_view[1][1].install_write_handler(0x6fff, 0x6fff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_w<1>)));
+ m_view[1][1].install_read_bank(0x7000, 0x77ff, m_rombank[4]);
+ m_view[1][1].install_write_handler(0x77ff, 0x77ff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_small_w<4>)));
+ m_view[1][1].install_read_bank(0x7800, 0x7fff, m_rombank[5]);
+ m_view[1][1].install_write_handler(0x7fff, 0x7fff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_small_w<5>)));
+ page(2)->install_read_bank(0x8000, 0x9fff, m_rombank[2]);
+ page(2)->install_write_handler(0x8fff, 0x8fff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_w<2>)));
+ page(2)->install_read_bank(0xa000, 0xbfff, m_rombank[3]);
+ page(2)->install_write_handler(0xafff, 0xafff, emu::rw_delegate(*this, FUNC(msx_cart_halnote_device::bank_w<3>)));
+
+ return std::error_condition();
+}
+
+template <int Bank>
+void msx_cart_halnote_device::bank_w(u8 data)
+{
+ m_rombank[Bank]->set_entry(data & 0x7f);
+ if (Bank == 0 || Bank == 3)
+ m_view[Bank ? 1 : 0].select(BIT(data, 7) ? 1 : 0);
+}
+
+template <int Bank>
+void msx_cart_halnote_device::bank_small_w(u8 data)
+{
+ m_rombank[Bank]->set_entry(data);
+}
+
+} // anonymous namespace
+
+DEFINE_DEVICE_TYPE_PRIVATE(MSX_CART_HALNOTE, msx_cart_interface, msx_cart_halnote_device, "msx_cart_halnote", "MSX Cartridge - Halnote")