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// license:BSD-3-Clause
// copyright-holders:Ville Linde
/*
	Rolling Extreme
	Gaelco, 1999

	PCB Layout
	----------

    REF.991015
      |--------------------------------------------------|
      |TL074 TDA1543  LP61256         ROE.45     ROE.58  |
      |                                                  |
      |TL074 TDA1543  LP61256         ROE.47     ROE.60  |-|
      |                                                  | |DB9
      |              |--------| KM4216C258  KM4216C258   |-|
      |              |ALTERA  |                          |
      |      LP61256 |FLEX    | KM4216C258  KM4216C258   |
      |      LP61256 |EPF10K50|                          |
    |-|      LP61256 |--------| KM4216C258  KM4216C258   |
    | |2444CS           CY2308                           |
    | |           |--------|    KM4216C258  KM4216C258   |
    | |  L4955    |ALTERA  |                             |
    | |           |FLEX    |    |------------|           |
    | |LED1       |EPF10K100    |CHIP EXPRESS|KM4216C258 |
    | |LED2 60MHz |--------|    |D3PLUS-4    |           |
    |-|    |----------|         |T2032-01    |KM4216C258 |
      |    |DSP       |         |N9G1554     |           |
      |    |TMS320C82 |         |9939 CA TWN |           |
      |    |GGP60     |         |------------|           |
      |    |1997 TI   |      93C66                       |
      |    |----------|         |-------|                |-|
      |          ROE.17         |ALTERA |         90MHz  | |DB9
      |K4S643232-TC80           |MAX    |KM718V895T-72   |-|
      |          ROE.18   ROE.38|EPM7160|                |
      |K4S643232-TC80           |-------|                |
      |--------------------------------------------------|
*/

/*

	MP Interrupts:

		External Interrupt 1:		0x4003ef78
		External Interrupt 2:		-
		External Interrupt 3:		0x40041d30
		Memory Fault:				0x40043ae8

	PP0 Interrupts:
		Task:						0x400010a0 / 0x400001a0

	PP1 Interrupts:
		Task:						0x4004c6e8


	Memory locations:

		[0x00000084] PP0 busy flag?
		[0x00000090] PP0 fifo write pointer?
		[0x00000094] PP0 fifo read pointer?
		[0x00000320] 2000000-TCOUNT in XINT3 handler
		[0x01010668] copied from (word)0xb0000004 in XINT3 handler


	Texture ROM decode:

 	  {ic45}     {ic47}     {ic58}     {ic60}
	[2,0][0,0] [2,1][0,1] [3,0][1,0] [3,1][1,1]

*/

#include "emu.h"
#include "cpu/tms32082/tms32082.h"

class rollext_state : public driver_device
{
public:
	rollext_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_palette_ram(*this, "palette_ram"),
		m_texture_mask(*this, "texture_mask"),
		m_disp_ram(*this, "disp_ram")
	{
	}

	required_device<cpu_device> m_maincpu;
	required_shared_ptr<UINT32> m_palette_ram;
	required_shared_ptr<UINT32> m_texture_mask;
	required_shared_ptr<UINT32> m_disp_ram;

	DECLARE_READ32_MEMBER(a0000000_r);
	DECLARE_WRITE32_MEMBER(a0000000_w);
	DECLARE_READ32_MEMBER(b0000000_r);

	UINT8 *m_texture;

	void draw_line(bitmap_rgb32 &bitmap, const rectangle &visarea, int v1x, int v1y, int v2x, int v2y);

	INTERRUPT_GEN_MEMBER(vblank_interrupt);
	DECLARE_DRIVER_INIT(rollext);
	virtual void machine_start();
	virtual void machine_reset();
	virtual void video_start();
	void preprocess_texture_data();
	UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
};



void rollext_state::preprocess_texture_data()
{
	UINT8 *rom = (UINT8*)memregion("texture")->base();

	for (int j=0; j < 16384; j+=2)
	{
		for (int i=0; i < 2048; i+=4)
		{
			m_texture[((j+0) * 2048) + i + 1] = *rom++;
			m_texture[((j+1) * 2048) + i + 1] = *rom++;
			m_texture[((j+0) * 2048) + i + 0] = *rom++;
			m_texture[((j+1) * 2048) + i + 0] = *rom++;
			m_texture[((j+0) * 2048) + i + 3] = *rom++;
			m_texture[((j+1) * 2048) + i + 3] = *rom++;
			m_texture[((j+0) * 2048) + i + 2] = *rom++;
			m_texture[((j+1) * 2048) + i + 2] = *rom++;
		}
	}
}

void rollext_state::draw_line(bitmap_rgb32 &bitmap, const rectangle &visarea, int v1x, int v1y, int v2x, int v2y)
{
	int dx = (v2x - v1x);
	int dy = (v2y - v1y);

	int x1 = v1x;
	int y1 = v1y;

	if (v1x < visarea.min_x || v1x > visarea.max_x ||
		v1y < visarea.min_y || v1y > visarea.max_y ||
		v2x < visarea.min_x || v2x > visarea.max_x ||
		v2y < visarea.min_y || v2y > visarea.max_x)
		return;

	if (dx > dy)
	{
		int x = x1;
		for (int i=0; i < abs(dx); i++)
		{
			int y = y1 + (dy * (float)(x - x1) / (float)(dx));

			if (x >= 0 && x < 512 && y >= 0 && y < 384)
			{
				UINT32 *fb = &bitmap.pix32(y);
				fb[x] = 0xffffffff;
			}

			x++;
		}
	}
	else
	{
		int y = y1;
		for (int i=0; i < abs(dy); i++)
		{
			int x = x1 + (dx * (float)(y - y1) / (float)(dy));

			if (x >= 0 && x < 512 && y >= 0 && y < 384)
			{
				UINT32 *fb = &bitmap.pix32(y);
				fb[x] = 0xffffffff;
			}

			y++;
		}
	}
}

void rollext_state::video_start()
{
	m_texture = auto_alloc_array(machine(), UINT8, 0x2000000);

	preprocess_texture_data();
}

UINT32 rollext_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
	bitmap.fill(0xff000000, cliprect);

#if 0
	UINT16 *pal = (UINT16*)&m_palette_ram[0];

	int palnum = 31;
	// 24,25,31 for basic font
	// 29 = trees

	int ii=0;
	for (int j=0; j < 384; j++)
	{
		UINT32 *fb = &bitmap.pix32(j);
		for (int i=0; i < 512; i++)
		{
			UINT8 p = m_texture[ii++];

			UINT16 rgb = pal[(palnum * 256) + BYTE_XOR_BE(p)];
			int r = ((rgb >> 10) & 0x1f) << 3;
			int g = ((rgb >> 5) & 0x1f) << 3;
			int b = (rgb & 0x1f) << 3;

			fb[i] = 0xff000000 | (r << 16) | (g << 8) | b;
		}
		ii += 1536;
	}
#endif

	int num = m_disp_ram[0xffffc/4];

	for (int i=0; i < num; i++)
	{
		int ii = i * 0x60;

		int x[4];
		int y[4];

		for (int j=0; j < 4; j++)
		{
			UINT32 ix = m_disp_ram[(ii + (j*0x10) + 0x4) / 4];
			UINT32 iy = m_disp_ram[(ii + (j*0x10) + 0xc) / 4];

			x[j] = (int)((u2f(ix) / 2.0f) + 256.0f);
			y[j] = (int)((u2f(iy) / 2.0f) + 192.0f);
		}

		
		draw_line(bitmap, cliprect, x[0], y[0], x[1], y[1]);
		draw_line(bitmap, cliprect, x[1], y[1], x[2], y[2]);
		draw_line(bitmap, cliprect, x[3], y[3], x[2], y[2]);
		draw_line(bitmap, cliprect, x[0], y[0], x[3], y[3]);
		
	}

	m_disp_ram[0xffffc/4] = 0;


	return 0;
}


READ32_MEMBER(rollext_state::a0000000_r)
{
	switch (offset)
	{
		case 0:			// ??
		{
			UINT32 data = 0x20200;

			//data |= ioport("INPUTS1")->read();
			//data |= 0xfff7fff7;

			return data;
		}

		case 1:
			return 0xffffffff;
	}

	return 0xffffffff;
}

WRITE32_MEMBER(rollext_state::a0000000_w)
{
	// FPGA interface?
}

READ32_MEMBER(rollext_state::b0000000_r)
{
	switch (offset)
	{
		case 0:		// ??
			return 0xffff;
		case 1:		// ??
			return 0;
	}

	return 0;
}


// Master Processor memory map
static ADDRESS_MAP_START(memmap, AS_PROGRAM, 32, rollext_state)
	AM_RANGE(0x40000000, 0x40ffffff) AM_RAM AM_SHARE("main_ram")
	AM_RANGE(0x60000000, 0x600fffff) AM_RAM AM_SHARE("disp_ram")
	AM_RANGE(0x80000000, 0x8000ffff) AM_RAM	AM_SHARE("palette_ram")
	AM_RANGE(0x90000000, 0x9007ffff) AM_RAM	AM_SHARE("texture_mask")
	AM_RANGE(0xa0000000, 0xa00000ff) AM_READWRITE(a0000000_r, a0000000_w)
	AM_RANGE(0xb0000000, 0xb0000007) AM_READ(b0000000_r)
	AM_RANGE(0xc0000000, 0xc03fffff) AM_ROM AM_REGION("rom1", 0)
	AM_RANGE(0xff000000, 0xffffffff) AM_RAM AM_REGION("rom0", 0)
ADDRESS_MAP_END


static INPUT_PORTS_START(rollext)

	PORT_START("INPUTS1")
	PORT_BIT( 0xfff7fff7, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_SERVICE_NO_TOGGLE( 0x00080008, IP_ACTIVE_LOW) /* Test Button */

INPUT_PORTS_END


void rollext_state::machine_reset()
{
}

void rollext_state::machine_start()
{
}


static MACHINE_CONFIG_START(rollext, rollext_state)
	MCFG_CPU_ADD("maincpu", TMS32082_MP, 60000000)
	MCFG_CPU_PROGRAM_MAP(memmap)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", rollext_state, vblank_interrupt)
	MCFG_CPU_PERIODIC_INT_DRIVER(rollext_state, irq3_line_assert,  60)

	MCFG_CPU_ADD("pp0", TMS32082_PP, 60000000)
	MCFG_CPU_PROGRAM_MAP(memmap);

	MCFG_QUANTUM_TIME(attotime::from_hz(100))

	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MCFG_SCREEN_SIZE(512, 384)
	MCFG_SCREEN_VISIBLE_AREA(0, 511, 0, 383)
	MCFG_SCREEN_UPDATE_DRIVER(rollext_state, screen_update)
MACHINE_CONFIG_END


INTERRUPT_GEN_MEMBER(rollext_state::vblank_interrupt)
{
	m_maincpu->set_input_line(tms32082_mp_device::INPUT_X1, ASSERT_LINE);
}

DRIVER_INIT_MEMBER(rollext_state, rollext)
{
}


ROM_START(rollext)
	ROM_REGION32_BE(0x1000000, "rom0", 0)
	ROM_LOAD64_DWORD_SWAP("roe.ic17", 0x000000, 0x800000, CRC(a52bf5a1) SHA1(5c35740e14978368ab1c72931a767fcb6f217edf))
	ROM_LOAD64_DWORD_SWAP("roe.ic18", 0x000004, 0x800000, CRC(1a4e65d6) SHA1(69fc7747d8e64d0b397c676bebaedc9e6122fe89))

	ROM_REGION32_BE(0x400000, "rom1", 0)
	ROM_LOAD32_DWORD("roe.ic38", 0x000000, 0x400000, CRC(d9bcfb7c) SHA1(eda9870881732d4dc7cdacb65c6d40af3451dc9d))

	ROM_REGION32_BE(0x2000000, "texture", 0)			// Texture ROMs
	ROM_LOAD32_BYTE("roe.ic45", 0x000000, 0x800000, CRC(0f7fe365) SHA1(ed50fd2b76840eac6ce394a0c748109f615b775a))
	ROM_LOAD32_BYTE("roe.ic47", 0x000001, 0x800000, CRC(44d7ccee) SHA1(2fec682396e4cca704bd1237016acec0e7b4b428))
	ROM_LOAD32_BYTE("roe.ic58", 0x000002, 0x800000, CRC(67ad4561) SHA1(56f41b4ebd827fec49902f377c5ed054c02d9e6c))
	ROM_LOAD32_BYTE("roe.ic60", 0x000003, 0x800000, CRC(a64524af) SHA1(31bef17656ab025f90cd222d3d6d0cb62dee29ee))
ROM_END


GAME( 1999, rollext, 0, rollext, rollext, rollext_state, rollext, ROT0, "Gaelco", "ROLLing eX.tre.me", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )