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// 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")
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