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-rw-r--r--src/devices/bus/isa/gblaster.cpp126
1 files changed, 126 insertions, 0 deletions
diff --git a/src/devices/bus/isa/gblaster.cpp b/src/devices/bus/isa/gblaster.cpp
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+++ b/src/devices/bus/isa/gblaster.cpp
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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/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_FRAGMENT( 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 )
+{
+ switch(offset)
+ {
+ case 0 : m_saa1099_1->data_w( space, offset, data ); break;
+ case 1 : m_saa1099_1->control_w( space, offset, data ); break;
+ }
+}
+
+WRITE8_MEMBER( isa8_gblaster_device::saa1099_2_16_w )
+{
+ switch(offset)
+ {
+ case 0 : m_saa1099_2->data_w( space, offset, data ); break;
+ case 1 : m_saa1099_2->control_w( space, offset, data ); break;
+ }
+}
+
+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
+//**************************************************************************
+
+const device_type ISA8_GAME_BLASTER = &device_creator<isa8_gblaster_device>;
+
+//-------------------------------------------------
+// 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 clock) :
+ device_t(mconfig, ISA8_GAME_BLASTER, "Game Blaster Sound Card", tag, owner, clock, "isa_gblaster", __FILE__),
+ 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, 0, 0, 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, 0, 0, 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, 0, 0, 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()
+{
+}