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// license:BSD-3-Clause
// copyright-holders:R. Belmont
/******************************************************************************
Sega Beena
apbeena.cpp
Skeleton driver for the Sega Advanced Pico BEENA
H/W is custom Sega SoC with ARM7TDMI core at 81 MHz.
TODO:
Everything!
Needs the internal BIOS dumped.
Component list / PCB diagram
Cartridge ROM has 'edinburgh' in the header, maybe a system codename?
ROM is also full of OGG files containing the string 'Encoded with Speex speex-1.0.4'
as well as .mid files for music.
Cartridges pinout:
Glob down, PCB cut corner at upper right
Top row of pins A25 on left to A1 on right.
Bottom row of pins B25 on left to B1 on right.
A1 /CE (tied high with resistor)
A2 D11
A3 D3
A4 D10
A5 D2
A6 D9
A7 D1
A8 D8
A9 D0
A10 /OE
A11 N/C
A12 A0
A13 A1
A14 A2
A15 A3
A16 A4
A17 A5
A18 A6
A19 A7
A20 A17
A21 A18
A22 N/C
A23 VCC
A24 N/C
A25 GND
B1 N/C
B2 D4
B3 D12
B4 D5
B5 D13
B6 D6
B7 D14
B8 D7
B9 D15
B10 A16
B11 A15
B12 A14
B13 A13
B14 A12
B15 A11
B16 A10
B17 A9
B18 A8
B19 A19
B20 A20
B21 N/C
B22 A21
B23 VCC
B24 N/C
B25 GND
*******************************************************************************/
#include "emu.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"
#include "cpu/arm7/arm7.h"
#include "softlist_dev.h"
#include "speaker.h"
#include "screen.h"
class sega_beena_state : public driver_device
{
public:
sega_beena_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "arm7")
, m_cart(*this, "cartslot")
, m_cart_region(nullptr)
, m_bank(*this, "cartbank")
{ }
void sega_beena(machine_config &config);
private:
virtual void machine_start() override;
virtual void machine_reset() override;
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
DECLARE_DEVICE_IMAGE_LOAD_MEMBER(cart_load);
void beena_arm7_map(address_map &map);
required_device<arm7_cpu_device> m_maincpu;
optional_device<generic_slot_device> m_cart;
memory_region *m_cart_region;
optional_memory_bank m_bank;
};
void sega_beena_state::beena_arm7_map(address_map &map)
{
map(0x00000000, 0x000001ff).rom().bankr("cartbank");
map(0x80000000, 0x807fffff).rom().bankr("cartbank");
}
void sega_beena_state::machine_start()
{
// if there's a cart, override the standard mapping
if (m_cart && m_cart->exists())
{
std::string region_tag;
m_cart_region = memregion(region_tag.assign(m_cart->tag()).append(GENERIC_ROM_REGION_TAG).c_str());
m_bank->configure_entries(0, (m_cart_region->bytes() + 0x7fffff) / 0x800000, m_cart_region->base(), 0x800000);
}
else
m_bank->configure_entries(0, 1, memregion("bios")->base(), 0x800000);
m_bank->set_entry(0);
}
void sega_beena_state::machine_reset()
{
}
DEVICE_IMAGE_LOAD_MEMBER(sega_beena_state::cart_load)
{
uint32_t size = m_cart->common_get_size("rom");
m_cart->rom_alloc(size, GENERIC_ROM16_WIDTH, ENDIANNESS_LITTLE);
m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom");
return image_init_result::PASS;
}
static INPUT_PORTS_START( sega_beena )
INPUT_PORTS_END
uint32_t sega_beena_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
return 0;
}
void sega_beena_state::sega_beena(machine_config &config)
{
ARM7_BE(config, m_maincpu, 81'000'000);
m_maincpu->set_addrmap(AS_PROGRAM, &sega_beena_state::beena_arm7_map);
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
screen.set_size(640, 480);
screen.set_visarea(0, 640-1, 0, 480-1);
screen.set_screen_update(FUNC(sega_beena_state::screen_update));
SPEAKER(config, "lspeaker").front_left();
SPEAKER(config, "rspeaker").front_right();
GENERIC_CARTSLOT(config, m_cart, generic_plain_slot, "sega_beena_cart");
m_cart->set_width(GENERIC_ROM16_WIDTH);
m_cart->set_device_load(FUNC(sega_beena_state::cart_load));
m_cart->set_must_be_loaded(true);
SOFTWARE_LIST(config, "cart_list").set_original("sega_beena_cart");
}
ROM_START( beena )
ROM_REGION32_BE( 0x80000, "bios", 0 ) // SoC internal BIOS
ROM_LOAD16_WORD_SWAP( "beenabios.bin", 0x000000, 0x080000, NO_DUMP )
ROM_END
// year, name, parent, compat, machine, input, class, init, company, fullname, flags
CONS( 2009, beena, 0, 0, sega_beena, sega_beena, sega_beena_state, empty_init, "Sega", "Advanced Pico BEENA", MACHINE_IS_SKELETON )
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