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-rw-r--r--src/mame/audio/taitosnd.c295
1 files changed, 295 insertions, 0 deletions
diff --git a/src/mame/audio/taitosnd.c b/src/mame/audio/taitosnd.c
new file mode 100644
index 00000000000..17a78b72140
--- /dev/null
+++ b/src/mame/audio/taitosnd.c
@@ -0,0 +1,295 @@
+#include "driver.h"
+#include "cpu/z80/z80.h"
+#include "taitosnd.h"
+
+
+/**********************************************************************************************
+
+ It seems like 1 nibble commands are only for control purposes.
+ 2 nibble commands are the real messages passed from one board to the other.
+
+**********************************************************************************************/
+
+/* Some logging defines */
+#if 0
+#define REPORT_SLAVE_MODE_CHANGE
+#define REPORT_SLAVE_MODE_READ_ITSELF
+#define REPORT_MAIN_MODE_READ_SLAVE
+#define REPORT_DATA_FLOW
+#endif
+
+
+
+
+#define TC0140SYT_PORT01_FULL (0x01)
+#define TC0140SYT_PORT23_FULL (0x02)
+#define TC0140SYT_PORT01_FULL_MASTER (0x04)
+#define TC0140SYT_PORT23_FULL_MASTER (0x08)
+
+typedef struct TC0140SYT
+{
+ UINT8 slavedata[4]; /* Data on master->slave port (4 nibbles) */
+ UINT8 masterdata[4];/* Data on slave->master port (4 nibbles) */
+ UINT8 mainmode; /* Access mode on master cpu side */
+ UINT8 submode; /* Access mode on slave cpu side */
+ UINT8 status; /* Status data */
+ UINT8 nmi_enabled; /* 1 if slave cpu has nmi's enabled */
+ UINT8 nmi_req; /* 1 if slave cpu has a pending nmi */
+} TC0140SYT;
+
+static struct TC0140SYT tc0140syt;
+
+
+static void Interrupt_Controller(void)
+{
+ if ( tc0140syt.nmi_req && tc0140syt.nmi_enabled )
+ {
+ cpunum_set_input_line( 1, INPUT_LINE_NMI, PULSE_LINE );
+ tc0140syt.nmi_req = 0;
+ }
+}
+
+WRITE8_HANDLER( taitosound_port_w )
+{
+ data &= 0x0f;
+
+ tc0140syt.mainmode = data;
+ //logerror("taitosnd: Master cpu mode [%02x]\n", data);
+ if (data > 4)
+ {
+ logerror("tc0140syt : error Master entering unknown mode[%02x]\n", data);
+ }
+}
+
+WRITE8_HANDLER( taitosound_comm_w )
+{
+
+ data &= 0x0f; /*this is important, otherwise ballbros won't work*/
+
+ switch( tc0140syt.mainmode )
+ {
+ case 0x00: // mode #0
+ tc0140syt.slavedata[tc0140syt.mainmode ++] = data;
+ //logerror("taitosnd: Master cpu written port 0, data %01x\n", data);
+ break;
+
+ case 0x01: // mode #1
+ tc0140syt.slavedata[tc0140syt.mainmode ++] = data;
+ tc0140syt.status |= TC0140SYT_PORT01_FULL;
+ tc0140syt.nmi_req = 1;
+ //logerror("taitosnd: Master cpu sends 0/1 : %01x%01x\n",tc0140syt.slavedata[1],tc0140syt.slavedata[0]);
+ break;
+
+ case 0x02: // mode #2
+ tc0140syt.slavedata[tc0140syt.mainmode ++] = data;
+ //logerror("taitosnd: Master cpu written port 2, data %01\n", data);
+ break;
+
+ case 0x03: // mode #3
+ tc0140syt.slavedata[tc0140syt.mainmode ++] = data;
+ tc0140syt.status |= TC0140SYT_PORT23_FULL;
+ tc0140syt.nmi_req = 1;
+ //logerror("taitosnd: Master cpu sends 2/3 : %01x%01x\n",tc0140syt.slavedata[3],tc0140syt.slavedata[2]);
+ break;
+
+ case 0x04: // port status
+//#ifdef REPORT_DATA_FLOW
+ //logerror("taitosnd: Master issued control value %02x (PC = %08x) \n",data, activecpu_get_pc() );
+//#endif
+ /* this does a hi-lo transition to reset the sound cpu */
+ if (data)
+ cpunum_set_input_line(1, INPUT_LINE_RESET, ASSERT_LINE);
+ else
+ {
+ cpunum_set_input_line(1, INPUT_LINE_RESET, CLEAR_LINE);
+ cpu_spin(); /* otherwise no sound in driftout */
+ }
+ break;
+
+ default:
+ logerror("taitosnd: Master cpu written in mode [%02x] data[%02x]\n",tc0140syt.mainmode, data);
+ }
+
+}
+
+READ8_HANDLER( taitosound_comm_r )
+{
+ switch( tc0140syt.mainmode )
+ {
+ case 0x00: // mode #0
+ //logerror("taitosnd: Master cpu read portdata %01x\n", tc0140syt.masterdata[0]);
+ return tc0140syt.masterdata[tc0140syt.mainmode ++];
+ break;
+
+ case 0x01: // mode #1
+ //logerror("taitosnd: Master cpu receives 0/1 : %01x%01x\n", tc0140syt.masterdata[1],tc0140syt.masterdata[0]);
+ tc0140syt.status &= ~TC0140SYT_PORT01_FULL_MASTER;
+ return tc0140syt.masterdata[tc0140syt.mainmode ++];
+ break;
+
+ case 0x02: // mode #2
+ //logerror("taitosnd: Master cpu read masterdata %01x\n", tc0140syt.masterdata[2]);
+ return tc0140syt.masterdata[tc0140syt.mainmode ++];
+ break;
+
+ case 0x03: // mode #3
+ //logerror("taitosnd: Master cpu receives 2/3 : %01x%01x\n", tc0140syt.masterdata[3],tc0140syt.masterdata[2]);
+ tc0140syt.status &= ~TC0140SYT_PORT23_FULL_MASTER;
+ return tc0140syt.masterdata[tc0140syt.mainmode ++];
+ break;
+
+ case 0x04: // port status
+ //logerror("tc0140syt : Master cpu read status : %02x\n", tc0140syt.status);
+ return tc0140syt.status;
+ break;
+
+ default:
+ logerror("tc0140syt : Master cpu read in mode [%02x]\n", tc0140syt.mainmode);
+ return 0;
+ }
+}
+
+//SLAVE SIDE
+
+WRITE8_HANDLER( taitosound_slave_port_w )
+{
+ data &= 0x0f;
+ tc0140syt.submode = data;
+ //logerror("taitosnd: Slave cpu mode [%02x]\n", data);
+ if (data > 6)
+ logerror("tc0140syt error : Slave cpu unknown mode[%02x]\n", data);
+}
+
+WRITE8_HANDLER( taitosound_slave_comm_w )
+{
+ data &= 0x0f;
+
+ switch ( tc0140syt.submode )
+ {
+ case 0x00: // mode #0
+ tc0140syt.masterdata[tc0140syt.submode ++] = data;
+ //logerror("taitosnd: Slave cpu written port 0, data %01x\n", data);
+ break;
+
+ case 0x01: // mode #1
+ tc0140syt.masterdata[tc0140syt.submode ++] = data;
+ tc0140syt.status |= TC0140SYT_PORT01_FULL_MASTER;
+ //logerror("taitosnd: Slave cpu sends 0/1 : %01x%01x\n",tc0140syt.masterdata[1],tc0140syt.masterdata[0]);
+ cpu_spin(); /* writing should take longer than emulated, so spin */
+ break;
+
+ case 0x02: // mode #2
+ //logerror("taitosnd: Slave cpu written port 2, data %01x\n", data);
+ tc0140syt.masterdata[tc0140syt.submode ++] = data;
+ break;
+
+ case 0x03: // mode #3
+ tc0140syt.masterdata[tc0140syt.submode ++] = data;
+ tc0140syt.status |= TC0140SYT_PORT23_FULL_MASTER;
+ //logerror("taitosnd: Slave cpu sends 2/3 : %01x%01x\n",tc0140syt.masterdata[3],tc0140syt.masterdata[2]);
+ cpu_spin(); /* writing should take longer than emulated, so spin */
+ break;
+
+ case 0x04: // port status
+ //tc0140syt.status = TC0140SYT_SET_OK;
+ //logerror("tc0140syt : Slave cpu status ok.\n");
+ break;
+
+ case 0x05: // nmi disable
+ tc0140syt.nmi_enabled = 0;
+ break;
+
+ case 0x06: // nmi enable
+ tc0140syt.nmi_enabled = 1;
+ break;
+
+ default:
+ logerror("tc0140syt: Slave cpu written in mode [%02x] data[%02x]\n",tc0140syt.submode, data & 0xff);
+ }
+
+ Interrupt_Controller();
+
+}
+
+READ8_HANDLER( taitosound_slave_comm_r )
+{
+ UINT8 res = 0;
+
+ switch ( tc0140syt.submode )
+ {
+ case 0x00: // mode #0
+ //logerror("taitosnd: Slave cpu read slavedata %01x\n", tc0140syt.slavedata[0]);
+ res = tc0140syt.slavedata[tc0140syt.submode ++];
+ break;
+
+ case 0x01: // mode #1
+ //logerror("taitosnd: Slave cpu receives 0/1 : %01x%01x PC=%4x\n", tc0140syt.slavedata[1],tc0140syt.slavedata[0],activecpu_get_pc());
+ tc0140syt.status &= ~TC0140SYT_PORT01_FULL;
+ res = tc0140syt.slavedata[tc0140syt.submode ++];
+ break;
+
+ case 0x02: // mode #2
+ //logerror("taitosnd: Slave cpu read slavedata %01x\n", tc0140syt.slavedata[2]);
+ res = tc0140syt.slavedata[tc0140syt.submode ++];
+ break;
+
+ case 0x03: // mode #3
+ //logerror("taitosnd: Slave cpu receives 2/3 : %01x%01x\n", tc0140syt.slavedata[3],tc0140syt.slavedata[2]);
+ tc0140syt.status &= ~TC0140SYT_PORT23_FULL;
+ res = tc0140syt.slavedata[tc0140syt.submode ++];
+ break;
+
+ case 0x04: // port status
+ //logerror("tc0140syt : Slave cpu read status : %02x\n", tc0140syt.status);
+ res = tc0140syt.status;
+ break;
+
+ default:
+ logerror("tc0140syt : Slave cpu read in mode [%02x]\n", tc0140syt.submode);
+ res = 0;
+ }
+
+ Interrupt_Controller();
+
+ return res;
+}
+
+
+
+
+
+
+
+/* wrapper functions for 16bit handlers */
+
+WRITE16_HANDLER( taitosound_port16_lsb_w )
+{
+ if (ACCESSING_LSB)
+ taitosound_port_w(0,data & 0xff);
+}
+WRITE16_HANDLER( taitosound_comm16_lsb_w )
+{
+ if (ACCESSING_LSB)
+ taitosound_comm_w(0,data & 0xff);
+}
+READ16_HANDLER( taitosound_comm16_lsb_r )
+{
+ return taitosound_comm_r(0);
+}
+
+
+WRITE16_HANDLER( taitosound_port16_msb_w )
+{
+ if (ACCESSING_MSB)
+ taitosound_port_w(0,data >> 8);
+}
+WRITE16_HANDLER( taitosound_comm16_msb_w )
+{
+ if (ACCESSING_MSB)
+ taitosound_comm_w(0,data >> 8);
+}
+READ16_HANDLER( taitosound_comm16_msb_r )
+{
+ return taitosound_comm_r(0) << 8;
+}
+