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path: root/src/mame/drivers/vii.cpp
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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz, Robbbert
/******************************************************************************


    Sport Vii / The Batman
    ----------------------

    driver by Ryan Holtz
    Based largely off of Unununium, by Segher


*******************************************************************************

    Short Description:

        Systems run on the SPG243 SoC

    Status:

        Mostly working

    To-Do:

        Audio (SPG243)
        Motion controls (Vii)

    Known u'nSP-Based Systems:

	 	 D - SPG240 - Radica Skateboarder (Sunplus QL8041C die)
        ND - SPG243 - Some form of Leapfrog "edutainment" system
        ND - SPG243 - Star Wars: Clone Wars
        ND - SPG243 - Toy Story
        ND - SPG243 - Animal Art Studio
        ND - SPG243 - Finding Nemo
         D - SPG243 - The Batman
         D - SPG243 - Wall-E
         D - SPG243 - Chintendo / KenSingTon / Siatronics / Jungle Soft Vii
 Partial D - SPG200 - VTech V.Smile
        ND - unknown - Zone 40
         D - SPG243 - Zone 60
         D - SPG243 - Wireless 60
        ND - unknown - Wireless Air 60
        ND - Likely many more


Similar Systems: ( from http://en.wkikpedia.org/wiki/V.Smile )
- V.Smile by VTech, a system designed for children under the age of 10
- V.Smile Pocket (2 versions)
- V.Smile Cyber Pocket
- V.Smile PC Pal
- V-Motion Active Learning System
- Leapster
- V.Smile Baby Infant Development System
- V.Flash

Detailed list of bugs:
- When loading a cart from file manager, sometimes it will crash
- On 'vii_vc1' & 'vii_vc2' cart, the left-right keys are transposed with the up-down keys
- The game 'Jewel Master' on both above carts displays a priority error at top of screen
- In the default bios (no cart loaded):
-- In the menu, when 'Come On!' is selected, a graphics error appears
-- Catch Fish, black screen
-- Come On! freezes at the high score screen, controls seem haywire
-- Bird Knight, no controls
-- Lucky Dice, the dice never stop spinning
-- Fever Move, after pressing A it freezes
-- Alacrity Golf, black screen
-- Smart Dart, black screen
-- Happy Tennis, controls are haywire
-- Bowling, freezes at the high score screen
-- The "EEPROM TEST" option in the diagnostic menu (accessible by holding 1+2 or A+B during startup) freezes when selected
-- The "MOTOR" option in the diagnostic menu does nothing when selected
-- The input for the gyroscopic sensor tests in the "KEYBOARD + G-SENSOR" sub-menu goes haywire
- Zone 60 / Wireless 60:
-- Auto Racing / Auto X, Dragon, Yummy, some other games: some sprites are inverted or opaque where they should be transparent
-- Basketball: emulator crashes when starting the game due to an unimplemented instruction


*******************************************************************************/

#include "emu.h"

#include "cpu/unsp/unsp.h"
#include "machine/i2cmem.h"

#include "bus/generic/slot.h"
#include "bus/generic/carts.h"

#include "screen.h"
#include "softlist.h"


#define PAGE_ENABLE_MASK        0x0008

#define PAGE_DEPTH_FLAG_MASK    0x3000
#define PAGE_DEPTH_FLAG_SHIFT   12
#define PAGE_TILE_HEIGHT_MASK   0x00c0
#define PAGE_TILE_HEIGHT_SHIFT  6
#define PAGE_TILE_WIDTH_MASK    0x0030
#define PAGE_TILE_WIDTH_SHIFT   4
#define TILE_X_FLIP             0x0004
#define TILE_Y_FLIP             0x0008

class spg2xx_game_state : public driver_device
{
public:
	spg2xx_game_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_p_ram(*this, "p_ram"),
		m_p_rowscroll(*this, "p_rowscroll"),
		m_p_palette(*this, "p_palette"),
		m_p_spriteram(*this, "p_spriteram"),
		m_io_p1(*this, "P1"),
		m_io_p2(*this, "P2"),
		m_io_p3(*this, "P3"),
		m_bank(*this, "cart")
	{ }

	DECLARE_READ16_MEMBER(video_r);
	DECLARE_WRITE16_MEMBER(video_w);
	DECLARE_READ16_MEMBER(audio_r);
	DECLARE_WRITE16_MEMBER(audio_w);
	DECLARE_READ16_MEMBER(io_r);
	DECLARE_WRITE16_MEMBER(io_w);
	DECLARE_READ16_MEMBER(rom_r);

	DECLARE_DRIVER_INIT(walle);
	DECLARE_DRIVER_INIT(batman);
	DECLARE_DRIVER_INIT(wirels60);
	DECLARE_DRIVER_INIT(rad_skat);

	uint32_t screen_update_vii(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);

	INTERRUPT_GEN_MEMBER(vii_vblank);

	TIMER_CALLBACK_MEMBER(tmb1_tick);
	TIMER_CALLBACK_MEMBER(tmb2_tick);

	void spg2xx_base(machine_config &config);
	void spg2xx_basep(machine_config &config);
	void batman(machine_config &config);
protected:
	virtual void machine_start() override;
	virtual void machine_reset() override;
	virtual void video_start() override;

	void switch_bank(uint32_t bank);
	uint32_t m_centered_coordinates; // this must be a vreg?
	void test_centered(uint8_t *ROM);

	typedef delegate<uint16_t(uint16_t, int)> vii_io_rw_delegate;
	vii_io_rw_delegate   m_vii_io_rw;
private:

	uint16_t do_spg240_rad_skat_io(uint16_t what, int index);
	uint16_t do_spg243_batman_io(uint16_t what, int index);
	uint16_t do_spg243_wireless60_io(uint16_t what, int index);

	uint32_t m_current_bank;

	uint16_t m_video_regs[0x100];

	struct
	{
		uint8_t r, g, b;
	}
	m_screenram[320 * 240];

	uint16_t m_io_regs[0x200];
	uint16_t m_uart_rx_count;
	uint8_t m_controller_input[8];
	uint8_t m_w60_controller_input;

	emu_timer *m_tmb1;
	emu_timer *m_tmb2;
	void do_dma(uint32_t len);
	void do_gpio(uint32_t offset);
	void do_i2c();
	void spg_do_dma(uint32_t len);

	void blit(bitmap_rgb32 &bitmap, const rectangle &cliprect, uint32_t xoff, uint32_t yoff, uint32_t attr, uint32_t ctrl, uint32_t bitmap_addr, uint16_t tile);
	void blit_page(bitmap_rgb32 &bitmap, const rectangle &cliprect, int depth, uint32_t bitmap_addr, uint16_t *regs);
	void blit_sprite(bitmap_rgb32 &bitmap, const rectangle &cliprect, int depth, uint32_t base_addr);
	void blit_sprites(bitmap_rgb32 &bitmap, const rectangle &cliprect, int depth);
	inline void verboselog(int n_level, const char *s_fmt, ...) ATTR_PRINTF(3, 4);
	inline uint8_t expand_rgb5_to_rgb8(uint8_t val);
	inline uint8_t mix_channel(uint8_t a, uint8_t b);
	void mix_pixel(uint32_t offset, uint16_t rgb);
	void set_pixel(uint32_t offset, uint16_t rgb);

	// devices

	required_device<cpu_device> m_maincpu;
	required_shared_ptr<uint16_t> m_p_ram;
	required_shared_ptr<uint16_t> m_p_rowscroll;
	required_shared_ptr<uint16_t> m_p_palette;
	required_shared_ptr<uint16_t> m_p_spriteram;
	required_ioport m_io_p1;
	optional_ioport m_io_p2;
	optional_ioport m_io_p3;
protected:
	required_memory_bank m_bank;
};


class spg2xx_cart_state : public spg2xx_game_state
{
public:
	spg2xx_cart_state(const machine_config &mconfig, device_type type, const char *tag)
		: spg2xx_game_state(mconfig, type, tag),
		m_cart(*this, "cartslot")
	{ }

	DECLARE_DRIVER_INIT(vii);
	DECLARE_DRIVER_INIT(vsmile);

	uint16_t do_spg243_vsmile_io(uint16_t what, int index);
	uint16_t do_spg243_vii_io(uint16_t what, int index);

	DECLARE_DEVICE_IMAGE_LOAD_MEMBER(vii_cart);
	DECLARE_DEVICE_IMAGE_LOAD_MEMBER(vsmile_cart);

	void vii(machine_config &config);
	void vsmile(machine_config &config);

protected:
	virtual void machine_start() override;

private:
	optional_device<generic_slot_device> m_cart;
	memory_region *m_cart_rom;
};

#define VII_CTLR_IRQ_ENABLE m_io_regs[0x21]
#define VII_VIDEO_IRQ_ENABLE    m_video_regs[0x62]
#define VII_VIDEO_IRQ_STATUS    m_video_regs[0x63]

#define VERBOSE_LEVEL   (3)

#define ENABLE_VERBOSE_LOG (1)

inline void spg2xx_game_state::verboselog(int n_level, const char *s_fmt, ...)
{
#if ENABLE_VERBOSE_LOG
	if (VERBOSE_LEVEL >= n_level)
	{
		va_list v;
		char buf[32768];
		va_start(v, s_fmt);
		vsprintf(buf, s_fmt, v);
		va_end(v);
	}
#endif
}

/*************************
*     Video Hardware     *
*************************/

void spg2xx_game_state::video_start()
{
}

inline uint8_t spg2xx_game_state::expand_rgb5_to_rgb8(uint8_t val)
{
	uint8_t temp = val & 0x1f;
	return (temp << 3) | (temp >> 2);
}

// Perform a lerp between a and b
inline uint8_t spg2xx_game_state::mix_channel(uint8_t a, uint8_t b)
{
	uint8_t alpha = m_video_regs[0x1c] & 0x00ff;
	return ((64 - alpha) * a + alpha * b) / 64;
}

void spg2xx_game_state::mix_pixel(uint32_t offset, uint16_t rgb)
{
	m_screenram[offset].r = mix_channel(m_screenram[offset].r, expand_rgb5_to_rgb8(rgb >> 10));
	m_screenram[offset].g = mix_channel(m_screenram[offset].g, expand_rgb5_to_rgb8(rgb >> 5));
	m_screenram[offset].b = mix_channel(m_screenram[offset].b, expand_rgb5_to_rgb8(rgb));
}

void spg2xx_game_state::set_pixel(uint32_t offset, uint16_t rgb)
{
	m_screenram[offset].r = expand_rgb5_to_rgb8(rgb >> 10);
	m_screenram[offset].g = expand_rgb5_to_rgb8(rgb >> 5);
	m_screenram[offset].b = expand_rgb5_to_rgb8(rgb);
}

void spg2xx_game_state::blit(bitmap_rgb32 &bitmap, const rectangle &cliprect, uint32_t xoff, uint32_t yoff, uint32_t attr, uint32_t ctrl, uint32_t bitmap_addr, uint16_t tile)
{
	address_space &space = m_maincpu->space(AS_PROGRAM);

	uint32_t h = 8 << ((attr & PAGE_TILE_HEIGHT_MASK) >> PAGE_TILE_HEIGHT_SHIFT);
	uint32_t w = 8 << ((attr & PAGE_TILE_WIDTH_MASK) >> PAGE_TILE_WIDTH_SHIFT);

	uint32_t yflipmask = attr & TILE_Y_FLIP ? h - 1 : 0;
	uint32_t xflipmask = attr & TILE_X_FLIP ? w - 1 : 0;

	uint32_t nc = ((attr & 0x0003) + 1) << 1;

	uint32_t palette_offset = (attr & 0x0f00) >> 4;
	palette_offset >>= nc;
	palette_offset <<= nc;

	uint32_t m = bitmap_addr + nc * w*h / 16 * tile;
	uint32_t bits = 0;
	uint32_t nbits = 0;

	uint32_t x, y;

	for (y = 0; y < h; y++)
	{
		uint32_t yy = (yoff + (y ^ yflipmask)) & 0x1ff;

		for (x = 0; x < w; x++)
		{
			uint32_t xx = (xoff + (x ^ xflipmask)) & 0x1ff;
			uint32_t pal;

			bits <<= nc;
			if (nbits < nc)
			{
				uint16_t b = space.read_word(m++ & 0x3fffff);
				b = (b << 8) | (b >> 8);
				bits |= b << (nc - nbits);
				nbits += 16;
			}
			nbits -= nc;

			pal = palette_offset | (bits >> 16);
			bits &= 0xffff;

			if ((ctrl & 0x0010) && yy < 240)
			{
				xx = (xx - (int16_t)m_p_rowscroll[yy]) & 0x01ff;
			}

			if (xx < 320 && yy < 240)
			{
				uint16_t rgb = m_p_palette[pal];
				if (!(rgb & 0x8000))
				{
					if (attr & 0x4000)
					{
						mix_pixel(xx + 320 * yy, rgb);
					}
					else
					{
						set_pixel(xx + 320 * yy, rgb);
					}
				}
			}
		}
	}
}

void spg2xx_game_state::blit_page(bitmap_rgb32 &bitmap, const rectangle &cliprect, int depth, uint32_t bitmap_addr, uint16_t *regs)
{
	uint32_t x0, y0;
	uint32_t xscroll = regs[0];
	uint32_t yscroll = regs[1];
	uint32_t attr = regs[2];
	uint32_t ctrl = regs[3];
	uint32_t tilemap = regs[4];
	uint32_t palette_map = regs[5];
	uint32_t h, w, hn, wn;
	address_space &space = m_maincpu->space(AS_PROGRAM);

	if (!(ctrl & PAGE_ENABLE_MASK))
	{
		return;
	}

	if (((attr & PAGE_DEPTH_FLAG_MASK) >> PAGE_DEPTH_FLAG_SHIFT) != depth)
	{
		return;
	}

	h = 8 << ((attr & PAGE_TILE_HEIGHT_MASK) >> PAGE_TILE_HEIGHT_SHIFT);
	w = 8 << ((attr & PAGE_TILE_WIDTH_MASK) >> PAGE_TILE_WIDTH_SHIFT);

	hn = 256 / h;
	wn = 512 / w;

	for (y0 = 0; y0 < hn; y0++)
	{
		for (x0 = 0; x0 < wn; x0++)
		{
			uint16_t tile = space.read_word(tilemap + x0 + wn * y0);
			uint16_t palette = 0;
			uint32_t xx, yy;

			if (!tile)
			{
				continue;
			}

			palette = space.read_word(palette_map + (x0 + wn * y0) / 2);
			if (x0 & 1)
			{
				palette >>= 8;
			}

			uint32_t tileattr = attr;
			uint32_t tilectrl = ctrl;
			if ((ctrl & 2) == 0)
			{   // -(1) bld(1) flip(2) pal(4)
				tileattr &= ~0x000c;
				tileattr |= (palette >> 2) & 0x000c;    // flip

				tileattr &= ~0x0f00;
				tileattr |= (palette << 8) & 0x0f00;    // palette

				tileattr &= ~0x0100;
				tileattr |= (palette << 2) & 0x0100;    // blend
			}

			yy = ((h*y0 - yscroll + 0x10) & 0xff) - 0x10;
			xx = (w*x0 - xscroll) & 0x1ff;

			blit(bitmap, cliprect, xx, yy, tileattr, tilectrl, bitmap_addr, tile);
		}
	}
}

void spg2xx_game_state::blit_sprite(bitmap_rgb32 &bitmap, const rectangle &cliprect, int depth, uint32_t base_addr)
{
	address_space &space = m_maincpu->space(AS_PROGRAM);
	uint16_t tile, attr;
	int16_t x, y;
	uint32_t h, w;
	uint32_t bitmap_addr = 0x40 * m_video_regs[0x22];

	tile = space.read_word(base_addr + 0);
	x = space.read_word(base_addr + 1);
	y = space.read_word(base_addr + 2);
	attr = space.read_word(base_addr + 3);

	if (!tile)
	{
		return;
	}

	if (((attr & PAGE_DEPTH_FLAG_MASK) >> PAGE_DEPTH_FLAG_SHIFT) != depth)
	{
		return;
	}

	if (m_centered_coordinates)
	{
		x = 160 + x;
		y = 120 - y;

		h = 8 << ((attr & PAGE_TILE_HEIGHT_MASK) >> PAGE_TILE_HEIGHT_SHIFT);
		w = 8 << ((attr & PAGE_TILE_WIDTH_MASK) >> PAGE_TILE_WIDTH_SHIFT);

		x -= (w / 2);
		y -= (h / 2) - 8;
	}

	x &= 0x01ff;
	y &= 0x01ff;

	blit(bitmap, cliprect, x, y, attr, 0, bitmap_addr, tile);
}

void spg2xx_game_state::blit_sprites(bitmap_rgb32 &bitmap, const rectangle &cliprect, int depth)
{
	uint32_t n;

	if (!(m_video_regs[0x42] & 1))
	{
		return;
	}

	for (n = 0; n < 256; n++)
	{
		//if(space.read_word(0x2c00 + 4*n)
		{
			blit_sprite(bitmap, cliprect, depth, 0x2c00 + 4 * n);
		}
	}
}

uint32_t spg2xx_game_state::screen_update_vii(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
	int i, x, y;

	bitmap.fill(0, cliprect);

	memset(m_screenram, 0, sizeof(m_screenram));

	for (i = 0; i < 4; i++)
	{
		blit_page(bitmap, cliprect, i, 0x40 * m_video_regs[0x20], m_video_regs + 0x10);
		blit_page(bitmap, cliprect, i, 0x40 * m_video_regs[0x21], m_video_regs + 0x16);
		blit_sprites(bitmap, cliprect, i);
	}

	for (y = 0; y < 240; y++)
	{
		for (x = 0; x < 320; x++)
		{
			bitmap.pix32(y, x) = (m_screenram[x + 320 * y].r << 16) | (m_screenram[x + 320 * y].g << 8) | m_screenram[x + 320 * y].b;
		}
	}

	return 0;
}

/*************************
*    Machine Hardware    *
*************************/

void spg2xx_game_state::do_dma(uint32_t len)
{
	address_space &mem = m_maincpu->space(AS_PROGRAM);
	uint32_t src = m_video_regs[0x70];
	uint32_t dst = m_video_regs[0x71] + 0x2c00;
	uint32_t j;

	for (j = 0; j < len; j++)
	{
		mem.write_word(dst + j, mem.read_word(src + j));
	}

	m_video_regs[0x72] = 0;
	m_video_regs[0x63] |= 4;
}

READ16_MEMBER(spg2xx_game_state::video_r)
{
	switch (offset)
	{
	case 0x62: // Video IRQ Enable
		verboselog(0, "video_r: Video IRQ Enable: %04x\n", VII_VIDEO_IRQ_ENABLE);
		return VII_VIDEO_IRQ_ENABLE;

	case 0x63: // Video IRQ Status
		verboselog(0, "video_r: Video IRQ Status: %04x\n", VII_VIDEO_IRQ_STATUS);
		return VII_VIDEO_IRQ_STATUS;

	default:
		verboselog(0, "video_r: Unknown register %04x = %04x\n", 0x2800 + offset, m_video_regs[offset]);
		break;
	}
	return m_video_regs[offset];
}

WRITE16_MEMBER(spg2xx_game_state::video_w)
{
	switch (offset)
	{
	case 0x10: case 0x16:   // page 1,2 X scroll
		data &= 0x01ff;
		COMBINE_DATA(&m_video_regs[offset]);
		break;

	case 0x11: case 0x17:   // page 1,2 Y scroll
		data &= 0x00ff;
		COMBINE_DATA(&m_video_regs[offset]);
		break;
	case 0x36:      // IRQ pos V
	case 0x37:      // IRQ pos H
		data &= 0x01ff;
		COMBINE_DATA(&m_video_regs[offset]);
		break;
	case 0x62: // Video IRQ Enable
		verboselog(0, "video_w: Video IRQ Enable = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&VII_VIDEO_IRQ_ENABLE);
		break;

	case 0x63: // Video IRQ Acknowledge
		verboselog(0, "video_w: Video IRQ Acknowledge = %04x (%04x)\n", data, mem_mask);
		VII_VIDEO_IRQ_STATUS &= ~data;
		if (!VII_VIDEO_IRQ_STATUS)
		{
			m_maincpu->set_input_line(UNSP_IRQ0_LINE, CLEAR_LINE);
		}
		break;

	case 0x70: // Video DMA Source
		verboselog(0, "video_w: Video DMA Source = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_video_regs[offset]);
		break;

	case 0x71: // Video DMA Dest
		verboselog(0, "video_w: Video DMA Dest = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_video_regs[offset]);
		break;

	case 0x72: // Video DMA Length
		verboselog(0, "video_w: Video DMA Length = %04x (%04x)\n", data, mem_mask);
		do_dma(data);
		break;

	default:
		verboselog(0, "video_w: Unknown register %04x = %04x (%04x)\n", 0x2800 + offset, data, mem_mask);
		COMBINE_DATA(&m_video_regs[offset]);
		break;
	}
}

READ16_MEMBER(spg2xx_game_state::audio_r)
{
	switch (offset)
	{
	default:
		verboselog(4, "audio_r: Unknown register %04x\n", 0x3000 + offset);
		break;
	}
	return 0;
}

WRITE16_MEMBER(spg2xx_game_state::audio_w)
{
	switch (offset)
	{
	default:
		verboselog(4, "audio_w: Unknown register %04x = %04x (%04x)\n", 0x3000 + offset, data, mem_mask);
		break;
	}
}

void spg2xx_game_state::switch_bank(uint32_t bank)
{
	if (bank != m_current_bank)
	{
		m_current_bank = bank;
		m_bank->set_entry(bank);
	}
}

uint16_t spg2xx_cart_state::do_spg243_vii_io(uint16_t what, int index)
{
	if (index == 1)
	{
		uint32_t bank = ((what & 0x80) >> 7) | ((what & 0x20) >> 4);
		switch_bank(bank);
	}
	return what;
}

uint16_t spg2xx_cart_state::do_spg243_vsmile_io(uint16_t what, int index)
{
	// TODO: find out how vsmile accesses these GPIO regs!
	return what;
}

uint16_t spg2xx_game_state::do_spg243_batman_io(uint16_t what, int index)
{
	if (index == 0)
	{
		uint16_t temp = m_io_p1->read();
		what |= (temp & 0x0001) ? 0x8000 : 0;
		what |= (temp & 0x0002) ? 0x4000 : 0;
		what |= (temp & 0x0004) ? 0x2000 : 0;
		what |= (temp & 0x0008) ? 0x1000 : 0;
		what |= (temp & 0x0010) ? 0x0800 : 0;
		what |= (temp & 0x0020) ? 0x0400 : 0;
		what |= (temp & 0x0040) ? 0x0200 : 0;
		what |= (temp & 0x0080) ? 0x0100 : 0;
	}

	if (index == 2)
	{
		// TODO: what is here?
	}

	return what;
}

uint16_t spg2xx_game_state::do_spg240_rad_skat_io(uint16_t what, int index)
{
	// have not checked for outputs yet.

	if (index == 0)
	{
		what = m_io_p1->read();
	}
	else if (index == 1)
	{
		what = m_io_p2->read();
	}
	else if (index == 2)
	{
		what = m_io_p3->read();
	}
	return what;
}

uint16_t spg2xx_game_state::do_spg243_wireless60_io(uint16_t what, int index)
{
	if (index == 0)
	{
		switch (what & 0x300)
		{
		case 0x300:
			m_w60_controller_input = -1;
			break;

		case 0x200:
			m_w60_controller_input++;
			break;

		default:
			uint16_t temp1 = m_io_p1->read();
			uint16_t temp2 = m_io_p2->read();
			uint16_t temp3 = 1 << m_w60_controller_input;
			if (temp1 & temp3) what ^= 0x400;
			if (temp2 & temp3) what ^= 0x800;
			break;
		}
	}

	if (index == 1)
	{
		uint32_t bank = (what & 7);
		switch_bank(bank);
	}

	return what;
}


void spg2xx_game_state::do_gpio(uint32_t offset)
{
	uint32_t index = (offset - 1) / 5;
	uint16_t buffer = m_io_regs[5 * index + 2];
	uint16_t dir = m_io_regs[5 * index + 3];
	uint16_t attr = m_io_regs[5 * index + 4];
	uint16_t special = m_io_regs[5 * index + 5];

	uint16_t push = dir;
	uint16_t pull = (~dir) & (~attr);
	uint16_t what = (buffer & (push | pull));
	what ^= (dir & ~attr);
	what &= ~special;

	if (!m_vii_io_rw.isnull())
		what = m_vii_io_rw(what, index);

	m_io_regs[5 * index + 1] = what;
}

void spg2xx_game_state::do_i2c()
{
}

void spg2xx_game_state::spg_do_dma(uint32_t len)
{
	address_space &mem = m_maincpu->space(AS_PROGRAM);

	uint32_t src = ((m_io_regs[0x101] & 0x3f) << 16) | m_io_regs[0x100];
	uint32_t dst = m_io_regs[0x103] & 0x3fff;
	uint32_t j;

	for (j = 0; j < len; j++)
		mem.write_word(dst + j, mem.read_word(src + j));

	m_io_regs[0x102] = 0;
}

READ16_MEMBER(spg2xx_game_state::io_r)
{
	logerror("io_r %04x\n", offset);

	static const char *const gpioregs[] = { "GPIO Data Port", "GPIO Buffer Port", "GPIO Direction Port", "GPIO Attribute Port", "GPIO IRQ/Latch Port" };
	static const char gpioports[] = { 'A', 'B', 'C' };

	uint16_t val = m_io_regs[offset];

	switch (offset)
	{
	case 0x01: case 0x06: case 0x0b: // GPIO Data Port A/B/C
		do_gpio(offset);
		verboselog(3, "io_r: %s %c = %04x (%04x)\n", gpioregs[(offset - 1) % 5], gpioports[(offset - 1) / 5], m_io_regs[offset], mem_mask);
		val = m_io_regs[offset];
		break;

	case 0x02: case 0x03: case 0x04: case 0x05:
	case 0x07: case 0x08: case 0x09: case 0x0a:
	case 0x0c: case 0x0d: case 0x0e: case 0x0f: // Other GPIO regs
		verboselog(3, "io_r: %s %c = %04x (%04x)\n", gpioregs[(offset - 1) % 5], gpioports[(offset - 1) / 5], m_io_regs[offset], mem_mask);
		break;

	case 0x1c: // Random
		val = machine().rand() & 0x00ff;
		verboselog(3, "io_r: Random = %04x (%04x)\n", val, mem_mask);
		break;

	case 0x21: // IRQ Control
		verboselog(3, "io_r: Controller IRQ Control = %04x (%04x)\n", val, mem_mask);
		break;

	case 0x22: // IRQ Status
		verboselog(3, "io_r: Controller IRQ Status = %04x (%04x)\n", val, mem_mask);
		break;

	case 0x2b:
		return 0x0000;

	case 0x2c: case 0x2d: // Timers?
		val = machine().rand() & 0x0000ffff;
		verboselog(3, "io_r: Unknown Timer %d Register = %04x (%04x)\n", offset - 0x2c, val, mem_mask);
		break;

	case 0x2f: // Data Segment
		val = m_maincpu->state_int(UNSP_SR) >> 10;
		verboselog(3, "io_r: Data Segment = %04x (%04x)\n", val, mem_mask);
		break;

	case 0x31: // Unknown, UART Status?
		verboselog(3, "io_r: Unknown (UART Status?) = %04x (%04x)\n", 3, mem_mask);
		val = 3;
		break;

	case 0x36: // UART RX Data
		val = m_controller_input[m_uart_rx_count];
		m_uart_rx_count = (m_uart_rx_count + 1) % 8;
		verboselog(3, "io_r: UART RX Data = %04x (%04x)\n", val, mem_mask);
		break;

	case 0x59: // I2C Status
		verboselog(3, "io_r: I2C Status = %04x (%04x)\n", val, mem_mask);
		break;

	case 0x5e: // I2C Data In
		verboselog(3, "io_r: I2C Data In = %04x (%04x)\n", val, mem_mask);
		break;

	default:
		verboselog(3, "io_r: Unknown register %04x\n", 0x3d00 + offset);
		break;
	}

	return val;
}

WRITE16_MEMBER(spg2xx_game_state::io_w)
{
	static const char *const gpioregs[] = { "GPIO Data Port", "GPIO Buffer Port", "GPIO Direction Port", "GPIO Attribute Port", "GPIO IRQ/Latch Port" };
	static const char gpioports[3] = { 'A', 'B', 'C' };

	uint16_t temp = 0;

	switch (offset)
	{
	case 0x00: // GPIO special function select
		verboselog(3, "io_w: GPIO Function Select = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x01: case 0x06: case 0x0b: // GPIO data, port A/B/C
		offset++;
		// Intentional fallthrough

	case 0x02: case 0x03: case 0x04: case 0x05: // Port A
	case 0x07: case 0x08: case 0x09: case 0x0a: // Port B
	case 0x0c: case 0x0d: case 0x0e: case 0x0f: // Port C
		verboselog(3, "io_w: %s %c = %04x (%04x)\n", gpioregs[(offset - 1) % 5], gpioports[(offset - 1) / 5], data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		do_gpio(offset);
		break;

	case 0x10:      // timebase control
		if ((m_io_regs[offset] & 0x0003) != (data & 0x0003)) {
			uint16_t hz = 8 << (data & 0x0003);
			verboselog(3, "*** TMB1 FREQ set to %dHz\n", hz);
			m_tmb1->adjust(attotime::zero, 0, attotime::from_hz(hz));
		}
		if ((m_io_regs[offset] & 0x000c) != (data & 0x000c)) {
			uint16_t hz = 128 << ((data & 0x000c) >> 2);
			verboselog(3, "*** TMB2 FREQ set to %dHz\n", hz);
			m_tmb2->adjust(attotime::zero, 0, attotime::from_hz(hz));
		}
		COMBINE_DATA(&m_io_regs[offset]);
		break;
	case 0x21: // IRQ Enable
		verboselog(3, "io_w: Controller IRQ Control = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&VII_CTLR_IRQ_ENABLE);
		if (!VII_CTLR_IRQ_ENABLE)
		{
			m_maincpu->set_input_line(UNSP_IRQ3_LINE, CLEAR_LINE);
		}
		break;

	case 0x22: // IRQ Acknowledge
		verboselog(3, "io_w: Controller IRQ Acknowledge = %04x (%04x)\n", data, mem_mask);
		m_io_regs[0x22] &= ~data;
		if (!m_io_regs[0x22])
		{
			m_maincpu->set_input_line(UNSP_IRQ3_LINE, CLEAR_LINE);
		}
		break;

	case 0x2f: // Data Segment
		temp = m_maincpu->state_int(UNSP_SR);
		m_maincpu->set_state_int(UNSP_SR, (temp & 0x03ff) | ((data & 0x3f) << 10));
		verboselog(3, "io_w: Data Segment = %04x (%04x)\n", data, mem_mask);
		break;

	case 0x31: // Unknown UART
		verboselog(3, "io_w: Unknown UART = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x32: // UART Reset
		verboselog(3, "io_w: UART Reset\n");
		break;

	case 0x33: // UART Baud Rate
		verboselog(3, "io_w: UART Baud Rate = %u\n", 27000000 / 16 / (0x10000 - (m_io_regs[0x34] << 8) - data));
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x35: // UART TX Data
		verboselog(3, "io_w: UART Baud Rate = %u\n", 27000000 / 16 / (0x10000 - (data << 8) - m_io_regs[0x33]));
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x5a: // I2C Access Mode
		verboselog(3, "io_w: I2C Access Mode = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x5b: // I2C Device Address
		verboselog(3, "io_w: I2C Device Address = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x5c: // I2C Sub-Address
		verboselog(3, "io_w: I2C Sub-Address = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x5d: // I2C Data Out
		verboselog(3, "io_w: I2C Data Out = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x5e: // I2C Data In
		verboselog(3, "io_w: I2C Data In = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x5f: // I2C Controller Mode
		verboselog(3, "io_w: I2C Controller Mode = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x58: // I2C Command
		verboselog(3, "io_w: I2C Command = %04x (%04x)\n", data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		do_i2c();
		break;

	case 0x59: // I2C Status / IRQ Acknowledge(?)
		verboselog(3, "io_w: I2C Status / Ack = %04x (%04x)\n", data, mem_mask);
		m_io_regs[offset] &= ~data;
		break;

	case 0x100: // DMA Source (L)
	case 0x101: // DMA Source (H)
	case 0x103: // DMA Destination
		COMBINE_DATA(&m_io_regs[offset]);
		break;

	case 0x102: // DMA Length
		spg_do_dma(data);
		break;

	default:
		verboselog(3, "io_w: Unknown register %04x = %04x (%04x)\n", 0x3d00 + offset, data, mem_mask);
		COMBINE_DATA(&m_io_regs[offset]);
		break;
	}
}

/*
WRITE16_MEMBER( spg2xx_game_state::rowscroll_w )
{
    switch(offset)
    {
        default:
            verboselog(0, "rowscroll_w: %04x = %04x (%04x)\n", 0x2900 + offset, data, mem_mask);
            break;
    }
}

WRITE16_MEMBER( spg2xx_game_state::spriteram_w )
{
    switch(offset)
    {
        default:
            verboselog(0, "spriteram_w: %04x = %04x (%04x)\n", 0x2c00 + offset, data, mem_mask);
            break;
    }
}
*/

static ADDRESS_MAP_START( vii_mem, AS_PROGRAM, 16, spg2xx_game_state )
	AM_RANGE( 0x000000, 0x3fffff ) AM_ROMBANK("cart")

	AM_RANGE( 0x000000, 0x0027ff ) AM_RAM AM_SHARE("p_ram")
	AM_RANGE( 0x002800, 0x0028ff ) AM_READWRITE(video_r, video_w)
	AM_RANGE( 0x002900, 0x002aff ) AM_RAM AM_SHARE("p_rowscroll")
	AM_RANGE( 0x002b00, 0x002bff ) AM_RAM AM_SHARE("p_palette")
	AM_RANGE( 0x002c00, 0x002fff ) AM_RAM AM_SHARE("p_spriteram")
	AM_RANGE( 0x003000, 0x0037ff ) AM_READWRITE(audio_r, audio_w)
	AM_RANGE( 0x003d00, 0x003eff ) AM_READWRITE(io_r,    io_w)
ADDRESS_MAP_END

static INPUT_PORTS_START( vii )
	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(1) PORT_NAME("Joypad Up")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(1) PORT_NAME("Joypad Down")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(1) PORT_NAME("Joypad Left")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_NAME("Joypad Right")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(1) PORT_NAME("Button A")
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(1) PORT_NAME("Button B")
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON3 )        PORT_PLAYER(1) PORT_NAME("Button C")
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON4 )        PORT_PLAYER(1) PORT_NAME("Button D")
INPUT_PORTS_END

static INPUT_PORTS_START( batman )
	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(1) PORT_NAME("Joypad Up")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(1) PORT_NAME("Joypad Down")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(1) PORT_NAME("Joypad Left")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_NAME("Joypad Right")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(1) PORT_NAME("A Button")
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(1) PORT_NAME("Menu")
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON3 )        PORT_PLAYER(1) PORT_NAME("B Button")
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON4 )        PORT_PLAYER(1) PORT_NAME("X Button")
INPUT_PORTS_END

static INPUT_PORTS_START( vsmile )
	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(1) PORT_NAME("Joypad Up")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(1) PORT_NAME("Joypad Down")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(1) PORT_NAME("Joypad Left")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_NAME("Joypad Right")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(1) PORT_NAME("A Button")
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(1) PORT_NAME("Menu")
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON3 )        PORT_PLAYER(1) PORT_NAME("B Button")
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON4 )        PORT_PLAYER(1) PORT_NAME("X Button")
INPUT_PORTS_END

static INPUT_PORTS_START( walle )
	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(1) PORT_NAME("Joypad Up")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(1) PORT_NAME("Joypad Down")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(1) PORT_NAME("Joypad Left")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_NAME("Joypad Right")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(1) PORT_NAME("A Button")
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(1) PORT_NAME("B Button")
INPUT_PORTS_END

static INPUT_PORTS_START( wirels60 )
	PORT_START("P1")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(1) PORT_NAME("Joypad Up")
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(1) PORT_NAME("Joypad Down")
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(1) PORT_NAME("Joypad Left")
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_NAME("Joypad Right")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(1) PORT_NAME("A Button")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(1) PORT_NAME("B Button")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON3 )        PORT_PLAYER(1) PORT_NAME("Menu")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON4 )        PORT_PLAYER(1) PORT_NAME("Start")

	PORT_START("P2")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )    PORT_PLAYER(2) PORT_NAME("Joypad Up")
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )  PORT_PLAYER(2) PORT_NAME("Joypad Down")
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_PLAYER(2) PORT_NAME("Joypad Left")
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) PORT_NAME("Joypad Right")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 )        PORT_PLAYER(2) PORT_NAME("A Button")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 )        PORT_PLAYER(2) PORT_NAME("B Button")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON3 )        PORT_PLAYER(2) PORT_NAME("Menu")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON4 )        PORT_PLAYER(2) PORT_NAME("Start")
INPUT_PORTS_END

static INPUT_PORTS_START( rad_skat )
	PORT_START("P1")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME("Full Left")
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_NAME("Full Right")
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_NAME("Slight Left") // you have to use this for the menus (eg trick lists)
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_NAME("Slight Right")
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_NAME("Front")
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_NAME("Back")
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
	// there only seem to be 3 buttons on the pad part, so presumably all the above are the skateboard, and below are the pad?
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("M Button")
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("X Button")
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("O Button")
	PORT_BIT( 0xf800, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("P2")
	PORT_BIT( 0xffff, IP_ACTIVE_LOW, IPT_UNUSED ) // read but unused?


	PORT_START("P3") // PAL/NTSC flag
	PORT_BIT( 0xffff, IP_ACTIVE_LOW, IPT_SPECIAL ) 
INPUT_PORTS_END

static INPUT_PORTS_START( rad_skatp )
	PORT_INCLUDE(rad_skat)
	
	PORT_MODIFY("P3") // PAL/NTSC flag
	PORT_BIT( 0xffff, IP_ACTIVE_HIGH, IPT_SPECIAL ) 
INPUT_PORTS_END



void spg2xx_game_state::test_centered(uint8_t *ROM)
{
	if (ROM[0x3cd808] == 0x99 &&
		ROM[0x3cd809] == 0x99 &&
		ROM[0x3cd80a] == 0x83 &&
		ROM[0x3cd80b] == 0x5e &&
		ROM[0x3cd80c] == 0x52 &&
		ROM[0x3cd80d] == 0x6b &&
		ROM[0x3cd80e] == 0x78 &&
		ROM[0x3cd80f] == 0x7f)
	{
		m_centered_coordinates = 0;
	}
}



TIMER_CALLBACK_MEMBER(spg2xx_game_state::tmb1_tick)
{
	m_io_regs[0x22] |= 1;
}

TIMER_CALLBACK_MEMBER(spg2xx_game_state::tmb2_tick)
{
	m_io_regs[0x22] |= 2;
}

void spg2xx_cart_state::machine_start()
{
	spg2xx_game_state::machine_start();

	// if there's a cart, override the standard banking
	if (m_cart && m_cart->exists())
	{
		std::string region_tag;
		m_cart_rom = memregion(region_tag.assign(m_cart->tag()).append(GENERIC_ROM_REGION_TAG).c_str());
		m_bank->configure_entries(0, ceilf((float)m_cart_rom->bytes() / 0x800000), m_cart_rom->base(), 0x800000);
		m_bank->set_entry(0);
	}
}

void spg2xx_game_state::machine_start()
{
	memset(m_video_regs, 0, 0x100 * sizeof(uint16_t));
	memset(m_io_regs, 0, 0x100 * sizeof(uint16_t));
	m_current_bank = 0;

	m_controller_input[0] = 0;
	m_controller_input[4] = 0;
	m_controller_input[6] = 0xff;
	m_controller_input[7] = 0;
	m_w60_controller_input = -1;

	m_video_regs[0x36] = 0xffff;
	m_video_regs[0x37] = 0xffff;

	m_tmb1 = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(spg2xx_game_state::tmb1_tick), this));
	m_tmb2 = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(spg2xx_game_state::tmb2_tick), this));
	m_tmb1->reset();
	m_tmb2->reset();

	m_bank->configure_entries(0, ceilf((float)memregion("maincpu")->bytes() / 0x800000), memregion("maincpu")->base(), 0x800000);
	m_bank->set_entry(0);
}

void spg2xx_game_state::machine_reset()
{
}

INTERRUPT_GEN_MEMBER(spg2xx_game_state::vii_vblank)
{
	uint32_t x = machine().rand() & 0x3ff;
	uint32_t y = machine().rand() & 0x3ff;
	uint32_t z = machine().rand() & 0x3ff;

	m_controller_input[0] = m_io_p1->read();
	m_controller_input[1] = (uint8_t)x;
	m_controller_input[2] = (uint8_t)y;
	m_controller_input[3] = (uint8_t)z;
	m_controller_input[4] = 0;
	x >>= 8;
	y >>= 8;
	z >>= 8;
	m_controller_input[5] = (z << 4) | (y << 2) | x;
	m_controller_input[6] = 0xff;
	m_controller_input[7] = 0;

	m_uart_rx_count = 0;

	VII_VIDEO_IRQ_STATUS = VII_VIDEO_IRQ_ENABLE & 1;
	if (VII_VIDEO_IRQ_STATUS)
	{
		verboselog(0, "Video IRQ\n");
		m_maincpu->set_input_line(UNSP_IRQ0_LINE, ASSERT_LINE);
	}

	//  {
	//      verboselog(0, "audio 1 IRQ\n");
	//      m_maincpu->set_input_line(UNSP_IRQ1_LINE, ASSERT_LINE);
	//  }
	if (m_io_regs[0x22] & m_io_regs[0x21] & 0x0c00)
	{
		verboselog(0, "timerA, timer B IRQ\n");
		m_maincpu->set_input_line(UNSP_IRQ2_LINE, ASSERT_LINE);
	}

	//if(m_io_regs[0x22] & m_io_regs[0x21] & 0x2100)
	// For now trigger always if any enabled
	if (VII_CTLR_IRQ_ENABLE)
	{
		verboselog(0, "UART, ADC IRQ\n");
		m_maincpu->set_input_line(UNSP_IRQ3_LINE, ASSERT_LINE);
	}
	//  {
	//      verboselog(0, "audio 4 IRQ\n");
	//      m_maincpu->set_input_line(UNSP_IRQ4_LINE, ASSERT_LINE);
	//  }

	if (m_io_regs[0x22] & m_io_regs[0x21] & 0x1200)
	{
		verboselog(0, "External IRQ\n");
		m_maincpu->set_input_line(UNSP_IRQ5_LINE, ASSERT_LINE);
	}
	if (m_io_regs[0x22] & m_io_regs[0x21] & 0x0070)
	{
		verboselog(0, "1024Hz, 2048HZ, 4096HZ IRQ\n");
		m_maincpu->set_input_line(UNSP_IRQ6_LINE, ASSERT_LINE);
	}
	if (m_io_regs[0x22] & m_io_regs[0x21] & 0x008b)
	{
		verboselog(0, "TMB1, TMB2, 4Hz, key change IRQ\n");
		m_maincpu->set_input_line(UNSP_IRQ7_LINE, ASSERT_LINE);
	}
}



DEVICE_IMAGE_LOAD_MEMBER(spg2xx_cart_state, vii_cart)
{
	uint32_t size = m_cart->common_get_size("rom");

	if (size < 0x800000)
	{
		image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size");
		return image_init_result::FAIL;
	}

	m_cart->rom_alloc(size, GENERIC_ROM16_WIDTH, ENDIANNESS_LITTLE);
	m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom");

	test_centered(m_cart->get_rom_base());

	return image_init_result::PASS;
}

DEVICE_IMAGE_LOAD_MEMBER(spg2xx_cart_state, vsmile_cart)
{
	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;
}

MACHINE_CONFIG_START(spg2xx_game_state::spg2xx_base)
	MCFG_CPU_ADD( "maincpu", UNSP, XTAL(27'000'000))
	MCFG_CPU_PROGRAM_MAP( vii_mem )
	MCFG_CPU_VBLANK_INT_DRIVER("screen", spg2xx_game_state,  vii_vblank)

	MCFG_SCREEN_ADD( "screen", RASTER )
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_SIZE(320, 240)
	MCFG_SCREEN_VISIBLE_AREA(0, 320-1, 0, 240-1)
	MCFG_SCREEN_UPDATE_DRIVER(spg2xx_game_state, screen_update_vii)
	MCFG_PALETTE_ADD("palette", 32768)
MACHINE_CONFIG_END

MACHINE_CONFIG_DERIVED(spg2xx_game_state::spg2xx_basep, spg2xx_base)

	MCFG_SCREEN_MODIFY( "screen" )
	MCFG_SCREEN_REFRESH_RATE(50)
MACHINE_CONFIG_END


MACHINE_CONFIG_DERIVED(spg2xx_cart_state::vii, spg2xx_base)
	MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "vii_cart")
	MCFG_GENERIC_WIDTH(GENERIC_ROM16_WIDTH)
	MCFG_GENERIC_LOAD(spg2xx_cart_state, vii_cart)

	MCFG_SOFTWARE_LIST_ADD("vii_cart","vii")
MACHINE_CONFIG_END

MACHINE_CONFIG_DERIVED(spg2xx_cart_state::vsmile, spg2xx_base)
	MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "vsmile_cart")
	MCFG_GENERIC_WIDTH(GENERIC_ROM16_WIDTH)
	MCFG_GENERIC_LOAD(spg2xx_cart_state, vsmile_cart)

	MCFG_SOFTWARE_LIST_ADD("cart_list","vsmile_cart")
MACHINE_CONFIG_END

MACHINE_CONFIG_DERIVED(spg2xx_game_state::batman, spg2xx_base)
	MCFG_I2CMEM_ADD("i2cmem")
	MCFG_I2CMEM_DATA_SIZE(0x200)
MACHINE_CONFIG_END


DRIVER_INIT_MEMBER(spg2xx_cart_state, vii)
{
	m_vii_io_rw = vii_io_rw_delegate(&spg2xx_cart_state::do_spg243_vii_io, this);
	m_centered_coordinates = 1;
}

DRIVER_INIT_MEMBER(spg2xx_cart_state, vsmile)
{
	m_vii_io_rw = vii_io_rw_delegate(&spg2xx_cart_state::do_spg243_vsmile_io, this);
	m_centered_coordinates = 1;
}

DRIVER_INIT_MEMBER(spg2xx_game_state, batman)
{
	m_vii_io_rw = vii_io_rw_delegate(&spg2xx_game_state::do_spg243_batman_io, this);
	m_centered_coordinates = 1;
}

DRIVER_INIT_MEMBER(spg2xx_game_state, rad_skat)
{
	m_vii_io_rw = vii_io_rw_delegate(&spg2xx_game_state::do_spg240_rad_skat_io, this);
	m_centered_coordinates = 1;
}

DRIVER_INIT_MEMBER(spg2xx_game_state, walle)
{
	m_vii_io_rw = vii_io_rw_delegate(&spg2xx_game_state::do_spg243_batman_io, this);
	m_centered_coordinates = 0;
}

DRIVER_INIT_MEMBER(spg2xx_game_state, wirels60)
{
	m_vii_io_rw = vii_io_rw_delegate(&spg2xx_game_state::do_spg243_wireless60_io, this);
	m_centered_coordinates = 1;
}

ROM_START( vii )
	ROM_REGION( 0x2000000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "vii.bin", 0x0000, 0x2000000, CRC(04627639) SHA1(f883a92d31b53c9a5b0cdb112d07cd793c95fc43))
ROM_END

ROM_START( batmantv )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "batman.bin", 0x000000, 0x400000, CRC(46f848e5) SHA1(5875d57bb3fe0cac5d20e626e4f82a0e5f9bb94c) )
ROM_END

ROM_START( vsmile )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD( "vsmilebios.bin", 0x000000, 0x200000, CRC(11f1b416) SHA1(11f77c4973d29c962567390e41879c86a759c93b) )
ROM_END

ROM_START( vsmileg )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "bios german.bin", 0x000000, 0x200000, CRC(205c5296) SHA1(7fbcf761b5885c8b1524607aabaf364b4559c8cc) )
ROM_END

ROM_START( vsmilef )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "sysrom_france", 0x000000, 0x200000, CRC(0cd0bdf5) SHA1(5c8d1eada1b6b545555b8d2b09325d7127681af8) )
ROM_END

ROM_START( vsmileb )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD( "vbabybios.bin", 0x000000, 0x800000, CRC(ddc7f845) SHA1(2c17d0f54200070176d03d44a40c7923636e596a) )
ROM_END

ROM_START( walle )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "walle.bin", 0x000000, 0x400000, BAD_DUMP CRC(bd554cba) SHA1(6cd06a036ab12e7b0e1fd8003db873b0bb783868) )
	// Alternate dump, we need to decide which one is correct.
	//ROM_LOAD16_WORD_SWAP( "walle.bin", 0x000000, 0x400000, CRC(6bc90b16) SHA1(184d72de059057aae7800da510fcf05ed1da9ec9))
ROM_END

ROM_START( zone60 )
	ROM_REGION( 0x4000000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "zone60.bin", 0x0000, 0x4000000, CRC(4cb637d1) SHA1(1f97cbdb4299ac0fbafc2a3aa592066cb0727066))
ROM_END

ROM_START( wirels60 )
	ROM_REGION( 0x4000000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "wirels60.bin", 0x0000, 0x4000000, CRC(b4df8b28) SHA1(00e3da542e4bc14baf4724ad436f66d4c0f65c84))
ROM_END

ROM_START( rad_skat )
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "skateboarder.bin", 0x000000, 0x400000, CRC(08b9ab91) SHA1(6665edc4740804956136c68065890925a144626b) )
ROM_END

ROM_START( rad_skatp ) // rom was dumped from the NTSC version, but region comes from an io port, so ROM is probably the same
	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )     
	ROM_LOAD16_WORD_SWAP( "skateboarder.bin", 0x000000, 0x400000, CRC(08b9ab91) SHA1(6665edc4740804956136c68065890925a144626b) )
ROM_END

//    YEAR  NAME      PARENT    COMPAT    MACHINE      INPUT     STATE              INIT      COMPANY                                              FULLNAME             FLAGS

// VTech systems
CONS( 2005, vsmile,   0,        0,        vsmile,      vsmile,   spg2xx_cart_state, vsmile,   "VTech",                                             "V.Smile (US)", MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING )
CONS( 2005, vsmileg,  vsmile,   0,        vsmile,      vsmile,   spg2xx_cart_state, vsmile,   "VTech",                                             "V.Smile (Germany)", MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING )
CONS( 2005, vsmilef,  vsmile,   0,        vsmile,      vsmile,   spg2xx_cart_state, vsmile,   "VTech",                                             "V.Smile (France)",  MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING )
CONS( 2005, vsmileb,  0,        0,        vsmile,      vsmile,   spg2xx_cart_state, vsmile,   "VTech",                                             "V.Smile Baby (US)", MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING )

// Jungle Soft TV games
CONS( 2007, vii,      0,        0,        vii,         vii,      spg2xx_cart_state, vii,      "Jungle Soft / KenSingTon / Chintendo / Siatronics", "Vii",               MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING ) // some games run, others crash

CONS( 2010, zone60,   0,        0,        spg2xx_base, wirels60, spg2xx_game_state, wirels60, "Jungle Soft / Ultimate Products (HK) Ltd",          "Zone 60",           MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS )
CONS( 2010, wirels60, 0,        0,        spg2xx_base, wirels60, spg2xx_game_state, wirels60, "Jungle Soft / Kids Station Toys Inc",               "Wireless 60",       MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS )

// JAKKS Pacific Inc TV games
CONS( 2004, batmantv, 0,        0,        batman,      batman,   spg2xx_game_state, batman,   "JAKKS Pacific Inc / HotGen Ltd",                    "The Batman",        MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS )
CONS( 2008, walle,    0,        0,        batman,      walle,    spg2xx_game_state, walle,    "JAKKS Pacific Inc",                                 "Wall-E",            MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS )

// Radica TV games
CONS( 2006, rad_skat,  0,       0,        spg2xx_base, rad_skat, spg2xx_game_state, rad_skat, "Radica",                                            "Play TV Skateboarder (NTSC)",       MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS )
CONS( 2006, rad_skatp, rad_skat,0,        spg2xx_basep,rad_skatp,spg2xx_game_state, rad_skat, "Radica",                                            "Connectv Skateboarder (PAL)",       MACHINE_NO_SOUND | MACHINE_IMPERFECT_GRAPHICS )