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-rw-r--r--src/devices/bus/a2bus/a2echoii.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/a2echoii.c b/src/devices/bus/a2bus/a2echoii.c
new file mode 100644
index 00000000000..e6be96b5d85
--- /dev/null
+++ b/src/devices/bus/a2bus/a2echoii.c
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+// license:BSD-3-Clause
+// copyright-holders:R. Belmont
+/*********************************************************************
+
+ a2echoii.c
+
+ Implementation of the Street Electronics Echo II speech card
+
+*********************************************************************/
+
+#include "a2echoii.h"
+#include "includes/apple2.h"
+#include "sound/tms5220.h"
+
+/***************************************************************************
+ PARAMETERS
+***************************************************************************/
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type A2BUS_ECHOII = &device_creator<a2bus_echoii_device>;
+
+#define TMS_TAG "tms5220"
+
+MACHINE_CONFIG_FRAGMENT( a2echoii )
+ MCFG_SPEAKER_STANDARD_MONO("echoii")
+ MCFG_SOUND_ADD(TMS_TAG, TMS5220, 640000) // Note the Echo II card has a "FREQ" potentiometer which can be used to adjust the tms5220's clock frequency; 640khz is the '8khz' value according to the tms5220 datasheet
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "echoii", 1.0)
+MACHINE_CONFIG_END
+
+/***************************************************************************
+ FUNCTION PROTOTYPES
+***************************************************************************/
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor a2bus_echoii_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( a2echoii );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+a2bus_echoii_device::a2bus_echoii_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) :
+ device_t(mconfig, type, name, tag, owner, clock, shortname, source),
+ device_a2bus_card_interface(mconfig, *this),
+ m_tms(*this, TMS_TAG)
+{
+}
+
+a2bus_echoii_device::a2bus_echoii_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, A2BUS_ECHOII, "Street Electronics Echo II", tag, owner, clock, "a2echoii", __FILE__),
+ device_a2bus_card_interface(mconfig, *this),
+ m_tms(*this, TMS_TAG)
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void a2bus_echoii_device::device_start()
+{
+ // set_a2bus_device makes m_slot valid
+ set_a2bus_device();
+}
+
+void a2bus_echoii_device::device_reset()
+{
+}
+
+UINT8 a2bus_echoii_device::read_c0nx(address_space &space, UINT8 offset)
+{
+ switch (offset)
+ {
+ case 0:
+ return 0x1f | m_tms->status_r(space, 0);
+ }
+
+ return 0;
+}
+
+void a2bus_echoii_device::write_c0nx(address_space &space, UINT8 offset, UINT8 data)
+{
+ switch (offset)
+ {
+ case 0:
+ m_tms->data_w(space, offset, data);
+ break;
+ }
+}
+
+bool a2bus_echoii_device::take_c800()
+{
+ return false;
+}