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// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic
/***************************************************************************
ISA 8 bit Creative Labs Game Blaster Sound Card
***************************************************************************/
#include "emu.h"
#include "gblaster.h"
#include "sound/spkrdev.h"
#include "speaker.h"
/*
creative labs game blaster (CMS creative music system)
2 x saa1099 chips
also on sound blaster 1.0
option on sound blaster 1.5
jumperable? normally 0x220
*/
static MACHINE_CONFIG_START( game_blaster_config )
MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
MCFG_SAA1099_ADD("saa1099.1", 7159090)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.50)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.50)
MCFG_SAA1099_ADD("saa1099.2", 7159090)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.50)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.50)
MACHINE_CONFIG_END
READ8_MEMBER( isa8_gblaster_device::saa1099_16_r )
{
return 0xff;
}
WRITE8_MEMBER( isa8_gblaster_device::saa1099_1_16_w )
{
m_saa1099_1->write(space, offset, data);
}
WRITE8_MEMBER( isa8_gblaster_device::saa1099_2_16_w )
{
m_saa1099_2->write(space, offset, data);
}
READ8_MEMBER( isa8_gblaster_device::detect_r )
{
switch(offset)
{
case 0:
case 1: return 0x7f; break; // this register reportedly returns 0x3f on a Tandy 1000 TL, and 0x7f on a generic 486 PC.
case 6:
case 7: return detect_reg; break;
default: return 0xff;
}
}
WRITE8_MEMBER( isa8_gblaster_device::detect_w )
{
switch(offset)
{
case 2:
case 3: detect_reg = (data & 0xff); break;
}
}
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
DEFINE_DEVICE_TYPE(ISA8_GAME_BLASTER, isa8_gblaster_device, "isa_gblaster", "Game Blaster Sound Card")
//-------------------------------------------------
// machine_config_additions - device-specific
// machine configurations
//-------------------------------------------------
machine_config_constructor isa8_gblaster_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( game_blaster_config );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// isa8_gblaster_device - constructor
//-------------------------------------------------
isa8_gblaster_device::isa8_gblaster_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, ISA8_GAME_BLASTER, tag, owner, clock),
device_isa8_card_interface(mconfig, *this),
m_saa1099_1(*this, "saa1099.1"),
m_saa1099_2(*this, "saa1099.2"),
detect_reg(0xFF)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void isa8_gblaster_device::device_start()
{
set_isa_device();
m_isa->install_device(0x0220, 0x0221, read8_delegate( FUNC(isa8_gblaster_device::saa1099_16_r), this ), write8_delegate( FUNC(isa8_gblaster_device::saa1099_1_16_w), this ) );
m_isa->install_device(0x0222, 0x0223, read8_delegate( FUNC(isa8_gblaster_device::saa1099_16_r), this ), write8_delegate( FUNC(isa8_gblaster_device::saa1099_2_16_w), this ) );
m_isa->install_device(0x0224, 0x022F, read8_delegate( FUNC(isa8_gblaster_device::detect_r), this ), write8_delegate( FUNC(isa8_gblaster_device::detect_w), this ) );
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void isa8_gblaster_device::device_reset()
{
}
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