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// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
 * svga_trident.c
 *
 *  Created on: 6/09/2014
 */

#include "emu.h"
#include "svga_trident.h"
#include "video/pc_vga.h"

#include "screen.h"


ROM_START( tgui9680 )
	ROM_REGION( 0x8000, "tgui9680", 0 )
	ROM_LOAD16_BYTE( "trident_tgui9680_bios.bin", 0x0000, 0x4000, CRC(1eebde64) SHA1(67896a854d43a575037613b3506aea6dae5d6a19) )
	ROM_CONTINUE(                                 0x0001, 0x4000 )
ROM_END

//**************************************************************************
//  GLOBAL VARIABLES
//**************************************************************************

DEFINE_DEVICE_TYPE(ISA16_SVGA_TGUI9680, isa16_svga_tgui9680_device, "tgui9680", "Trident TGUI9680 Graphics Card (BIOS X5.5 (02) 02/13/96)")


//-------------------------------------------------
//  device_add_mconfig - add device configuration
//-------------------------------------------------

MACHINE_CONFIG_START(isa16_svga_tgui9680_device::device_add_mconfig)
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(XTAL(25'174'800),900,0,640,526,0,480)
	MCFG_SCREEN_UPDATE_DEVICE("vga", trident_vga_device, screen_update)

	MCFG_DEVICE_ADD("vga", TRIDENT_VGA, 0)
	MCFG_VIDEO_SET_SCREEN("screen")
MACHINE_CONFIG_END

//-------------------------------------------------
//  rom_region - device-specific ROM region
//-------------------------------------------------

const tiny_rom_entry *isa16_svga_tgui9680_device::device_rom_region() const
{
	return ROM_NAME( tgui9680 );
}

//**************************************************************************
//  LIVE DEVICE
//**************************************************************************

//-------------------------------------------------
//  isa8_vga_device - constructor
//-------------------------------------------------

isa16_svga_tgui9680_device::isa16_svga_tgui9680_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
	device_t(mconfig, ISA16_SVGA_TGUI9680, tag, owner, clock),
	device_isa16_card_interface(mconfig, *this),
	m_vga(nullptr)
{
}

//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------
READ8_MEMBER(isa16_svga_tgui9680_device::input_port_0_r ) { return 0xff; } //return machine().root_device().ioport("IN0")->read(); }

void isa16_svga_tgui9680_device::device_start()
{
	set_isa_device();

	m_vga = subdevice<trident_vga_device>("vga");

	m_isa->install_rom(this, 0xc0000, 0xc7fff, "tgui9680", "tgui9680");

	m_isa->install_device(0x3b0, 0x3bf, read8_delegate(FUNC(trident_vga_device::port_03b0_r),m_vga), write8_delegate(FUNC(trident_vga_device::port_03b0_w),m_vga));
	m_isa->install_device(0x3c0, 0x3cf, read8_delegate(FUNC(trident_vga_device::port_03c0_r),m_vga), write8_delegate(FUNC(trident_vga_device::port_03c0_w),m_vga));
	m_isa->install_device(0x3d0, 0x3df, read8_delegate(FUNC(trident_vga_device::port_03d0_r),m_vga), write8_delegate(FUNC(trident_vga_device::port_03d0_w),m_vga));
	m_isa->install_device(0x43c4, 0x43cb, read8_delegate(FUNC(trident_vga_device::port_43c6_r),m_vga), write8_delegate(FUNC(trident_vga_device::port_43c6_w),m_vga));
	m_isa->install_device(0x83c4, 0x83cb, read8_delegate(FUNC(trident_vga_device::port_83c6_r),m_vga), write8_delegate(FUNC(trident_vga_device::port_83c6_w),m_vga));

	m_isa->install_memory(0xa0000, 0xbffff, read8_delegate(FUNC(trident_vga_device::mem_r),m_vga), write8_delegate(FUNC(trident_vga_device::mem_w),m_vga));

	// uncomment to test Windows 3.1 TGUI9440AGi driver
//  m_isa->install_memory(0x4400000, 0x45fffff, read8_delegate(FUNC(trident_vga_device::vram_r),m_vga), write8_delegate(FUNC(trident_vga_device::vram_w),m_vga));

	// win95 drivers
//  m_isa->install_memory(0x4000000, 0x41fffff, read8_delegate(FUNC(trident_vga_device::vram_r),m_vga), write8_delegate(FUNC(trident_vga_device::vram_w),m_vga));

	// acceleration ports
	m_isa->install_device(0x2120, 0x21ff, read8_delegate(FUNC(trident_vga_device::accel_r),m_vga), write8_delegate(FUNC(trident_vga_device::accel_w),m_vga));
}

//-------------------------------------------------
//  device_reset - device-specific reset
//-------------------------------------------------

void isa16_svga_tgui9680_device::device_reset()
{
}