summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/a2bus/a2echoii.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/a2bus/a2echoii.cpp')
-rw-r--r--src/devices/bus/a2bus/a2echoii.cpp55
1 files changed, 47 insertions, 8 deletions
diff --git a/src/devices/bus/a2bus/a2echoii.cpp b/src/devices/bus/a2bus/a2echoii.cpp
index 4bc6c9ccfb2..6d73924d105 100644
--- a/src/devices/bus/a2bus/a2echoii.cpp
+++ b/src/devices/bus/a2bus/a2echoii.cpp
@@ -27,25 +27,55 @@
#include "sound/tms5220.h"
#include "speaker.h"
-#define LOG_READYQ (1 << 0)
-#define LOG_READ (1 << 1)
-#define LOG_WRITE (1 << 2)
+#define LOG_READYQ (1U << 1)
+#define LOG_READ (1U << 2)
+#define LOG_WRITE (1U << 3)
//#define VERBOSE (LOG_READYQ | LOG_READ | LOG_WRITE)
#include "logmacro.h"
+namespace {
+
/***************************************************************************
PARAMETERS
***************************************************************************/
+#define TMS_TAG "tms5220"
+
//**************************************************************************
-// GLOBAL VARIABLES
+// TYPE DEFINITIONS
//**************************************************************************
-DEFINE_DEVICE_TYPE(A2BUS_ECHOII, a2bus_echoii_device, "a2echoii", "Street Electronics Echo II")
+class a2bus_echoii_device:
+ public device_t,
+ public device_a2bus_card_interface
+{
+public:
+ // construction/destruction
+ a2bus_echoii_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
-#define TMS_TAG "tms5220"
+ required_device<tms5220_device> m_tms;
+
+protected:
+ a2bus_echoii_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
+
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_reset() override ATTR_COLD;
+ virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
+
+ // overrides of standard a2bus slot functions
+ virtual uint8_t read_c0nx(uint8_t offset) override;
+ virtual void write_c0nx(uint8_t offset, uint8_t data) override;
+ virtual bool take_c800() override;
+
+private:
+ //void tms_irq_callback(int state);
+ void tms_readyq_callback(int state);
+ uint8_t m_writelatch_data; // 74ls373 latch
+ bool m_readlatch_flag; // 74c74 1st half
+ bool m_writelatch_flag; // 74c74 2nd half
+};
/***************************************************************************
FUNCTION PROTOTYPES
@@ -110,13 +140,13 @@ void a2bus_echoii_device::device_reset()
}
/*
-WRITE_LINE_MEMBER(a2bus_echoii_device::tms_irq_callback)
+void a2bus_echoii_device::tms_irq_callback(int state)
{
update_irq_to_maincpu();
}
*/
-WRITE_LINE_MEMBER(a2bus_echoii_device::tms_readyq_callback)
+void a2bus_echoii_device::tms_readyq_callback(int state)
{
if (state == ASSERT_LINE)
{
@@ -170,3 +200,12 @@ bool a2bus_echoii_device::take_c800()
{
return false;
}
+
+} // anonymous namespace
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_ECHOII, device_a2bus_card_interface, a2bus_echoii_device, "a2echoii", "Street Electronics Echo II")