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-rw-r--r--src/devices/bus/a2bus/ssprite.cpp151
1 files changed, 151 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/ssprite.cpp b/src/devices/bus/a2bus/ssprite.cpp
new file mode 100644
index 00000000000..5f101bcf6ac
--- /dev/null
+++ b/src/devices/bus/a2bus/ssprite.cpp
@@ -0,0 +1,151 @@
+// license:BSD-3-Clause
+// copyright-holders:R. Belmont, Golden Child
+/*********************************************************************
+
+ ssprite.cpp
+
+ Implementation of the Synetix SuperSprite
+
+*********************************************************************/
+
+#include "emu.h"
+#include "ssprite.h"
+#include "sound/tms5220.h"
+#include "speaker.h"
+
+
+/***************************************************************************
+ PARAMETERS
+***************************************************************************/
+
+#define TMS_TAG "ssprite_tms"
+#define TMS5220_TAG "ssprite_tms5220"
+#define AY_TAG "ssprite_ay"
+#define SCREEN_TAG "screen"
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(A2BUS_SSPRITE, a2bus_ssprite_device, "a2ssprite", "Synetix SuperSprite")
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+MACHINE_CONFIG_MEMBER( a2bus_ssprite_device::device_add_mconfig )
+ MCFG_DEVICE_ADD( TMS_TAG, TMS9918A, XTAL_10_738635MHz / 2 )
+ MCFG_TMS9928A_VRAM_SIZE(0x4000) // 16k of VRAM
+ MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(a2bus_ssprite_device, tms_irq_w))
+ MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG )
+ MCFG_SCREEN_UPDATE_DEVICE( TMS_TAG, tms9918a_device, screen_update )
+
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD(AY_TAG, AY8912, 1022727)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+ MCFG_SOUND_ADD(TMS5220_TAG, TMS5220, 640000)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+MACHINE_CONFIG_END
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+a2bus_ssprite_device::a2bus_ssprite_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ a2bus_ssprite_device(mconfig, A2BUS_SSPRITE, tag, owner, clock)
+{
+}
+
+a2bus_ssprite_device::a2bus_ssprite_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, type, tag, owner, clock),
+ device_a2bus_card_interface(mconfig, *this),
+ m_tms(*this, TMS_TAG),
+ m_ay(*this, AY_TAG),
+ m_tms5220(*this, TMS5220_TAG)
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void a2bus_ssprite_device::device_start()
+{
+ // set_a2bus_device makes m_slot valid
+ set_a2bus_device();
+}
+
+void a2bus_ssprite_device::device_reset()
+{
+}
+
+/*
+ C0nx map: (info from Synetix SuperSprite Owners manual.pdf page 33 of 266)
+ 0 - TMS9918 VDP vram read/write
+ 1 - TMS9918 VDP register write
+ 2 - TMS5220 Speech read/write
+ 3 - Video Switch APPLE VIDEO IN OFF
+ 4 - Video Switch APPLE VIDEO IN ON
+ 5 - Video Switch APPLE ONLY OUT
+ 6 - Video Switch MIX VDP/EXTERNAL VIDEO
+ 7 - TMS 9918 WRITE ONLY/FRAME RESET
+ C - AY Sound data write
+ D - AY Sound data write
+ E - AY Sound register write or data read
+ F - AY Sound register write or data read
+*/
+
+
+uint8_t a2bus_ssprite_device::read_c0nx(address_space &space, uint8_t offset)
+{
+ switch (offset)
+ {
+ case 0:
+ return m_tms->vram_read(space, 0);
+ case 1:
+ return m_tms->register_read(space, 0);
+ case 2:
+ return 0x1f | m_tms5220->status_r(space, 0); // copied this line from a2echoii.cpp
+ case 14:
+ case 15:
+ return m_ay->data_r(space, 0);
+ }
+
+ return 0xff;
+}
+
+void a2bus_ssprite_device::write_c0nx(address_space &space, uint8_t offset, uint8_t data)
+{
+ switch (offset)
+ {
+ case 0:
+ m_tms->vram_write(space, 0, data);
+ break;
+ case 1:
+ m_tms->register_write(space, 0, data);
+ break;
+ case 2:
+ m_tms5220->data_w(space, offset, data);
+ break;
+ case 12:
+ case 13:
+ m_ay->data_w(space, 0, data);
+ break;
+ case 14:
+ case 15:
+ m_ay->address_w(space, 0, data);
+ break;
+ }
+}
+
+WRITE_LINE_MEMBER( a2bus_ssprite_device::tms_irq_w )
+{
+ if (state)
+ {
+ raise_slot_irq();
+ }
+ else
+ {
+ lower_slot_irq();
+ }
+}