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-rw-r--r--trunk/src/mame/audio/harddriv.c384
1 files changed, 384 insertions, 0 deletions
diff --git a/trunk/src/mame/audio/harddriv.c b/trunk/src/mame/audio/harddriv.c
new file mode 100644
index 00000000000..b8ef67dc12a
--- /dev/null
+++ b/trunk/src/mame/audio/harddriv.c
@@ -0,0 +1,384 @@
+/***************************************************************************
+
+ Hard Drivin' sound hardware
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/tms32010/tms32010.h"
+#include "sound/dac.h"
+#include "machine/atarigen.h"
+#include "includes/harddriv.h"
+
+
+#define BIO_FREQUENCY (1000000 / 50)
+#define CYCLES_PER_BIO (5000000 / BIO_FREQUENCY)
+
+
+/*************************************
+ *
+ * Driver init
+ *
+ *************************************/
+
+void hdsnd_init(running_machine &machine)
+{
+ harddriv_state *state = machine.driver_data<harddriv_state>();
+ state->m_rombase = (UINT8 *)machine.region("serialroms")->base();
+ state->m_romsize = machine.region("serialroms")->bytes();
+}
+
+
+
+/*************************************
+ *
+ * Update flags
+ *
+ *************************************/
+
+static void update_68k_interrupts(running_machine &machine)
+{
+ harddriv_state *state = machine.driver_data<harddriv_state>();
+ device_set_input_line(state->m_soundcpu, 1, state->m_mainflag ? ASSERT_LINE : CLEAR_LINE);
+ device_set_input_line(state->m_soundcpu, 3, state->m_irq68k ? ASSERT_LINE : CLEAR_LINE);
+}
+
+
+
+/*************************************
+ *
+ * I/O from main CPU side
+ *
+ *************************************/
+
+READ16_HANDLER( hd68k_snd_data_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ state->m_soundflag = 0;
+ logerror("%06X:main read from sound=%04X\n", cpu_get_previouspc(&space->device()), state->m_sounddata);
+ return state->m_sounddata;
+}
+
+
+READ16_HANDLER( hd68k_snd_status_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ return (state->m_mainflag << 15) | (state->m_soundflag << 14) | 0x1fff;
+}
+
+
+static TIMER_CALLBACK( delayed_68k_w )
+{
+ harddriv_state *state = machine.driver_data<harddriv_state>();
+ state->m_maindata = param;
+ state->m_mainflag = 1;
+ update_68k_interrupts(machine);
+}
+
+
+WRITE16_HANDLER( hd68k_snd_data_w )
+{
+ space->machine().scheduler().synchronize(FUNC(delayed_68k_w), data);
+ logerror("%06X:main write to sound=%04X\n", cpu_get_previouspc(&space->device()), data);
+}
+
+
+WRITE16_HANDLER( hd68k_snd_reset_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ device_set_input_line(state->m_soundcpu, INPUT_LINE_RESET, ASSERT_LINE);
+ device_set_input_line(state->m_soundcpu, INPUT_LINE_RESET, CLEAR_LINE);
+ state->m_mainflag = state->m_soundflag = 0;
+ update_68k_interrupts(space->machine());
+ logerror("%06X:Reset sound\n", cpu_get_previouspc(&space->device()));
+}
+
+
+
+/*************************************
+ *
+ * I/O from sound CPU side
+ *
+ *************************************/
+
+READ16_HANDLER( hdsnd68k_data_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ state->m_mainflag = 0;
+ update_68k_interrupts(space->machine());
+ logerror("%06X:sound read from main=%04X\n", cpu_get_previouspc(&space->device()), state->m_maindata);
+ return state->m_maindata;
+}
+
+
+WRITE16_HANDLER( hdsnd68k_data_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ COMBINE_DATA(&state->m_sounddata);
+ state->m_soundflag = 1;
+ logerror("%06X:sound write to main=%04X\n", cpu_get_previouspc(&space->device()), data);
+}
+
+
+
+/*************************************
+ *
+ * Misc. 68k inputs
+ *
+ *************************************/
+
+READ16_HANDLER( hdsnd68k_switches_r )
+{
+ logerror("%06X:hdsnd68k_switches_r(%04X)\n", cpu_get_previouspc(&space->device()), offset);
+ return 0;
+}
+
+
+READ16_HANDLER( hdsnd68k_320port_r )
+{
+ logerror("%06X:hdsnd68k_320port_r(%04X)\n", cpu_get_previouspc(&space->device()), offset);
+ return 0;
+}
+
+
+READ16_HANDLER( hdsnd68k_status_r )
+{
+//FFFF 3000 R READSTAT Read Status
+// D15 = 'Main Flag'
+// D14 = 'Sound Flag'
+// D13 = Test Switch
+// D12 = 5220 Ready Flag (0=Ready)
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ logerror("%06X:hdsnd68k_status_r(%04X)\n", cpu_get_previouspc(&space->device()), offset);
+ return (state->m_mainflag << 15) | (state->m_soundflag << 14) | 0x2000 | 0;//((input_port_read(space->machine(), "IN0") & 0x0020) << 8) | 0;
+}
+
+
+
+/*************************************
+ *
+ * Misc. 68k outputs
+ *
+ *************************************/
+
+WRITE16_HANDLER( hdsnd68k_latches_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+
+ /* bit 3 selects the value; data is ignored */
+ data = (offset >> 3) & 1;
+
+ /* low 3 bits select the function */
+ offset &= 7;
+ switch (offset)
+ {
+ case 0: /* SPWR - 5220 write strobe */
+ /* data == 0 means high, 1 means low */
+ logerror("%06X:SPWR=%d\n", cpu_get_previouspc(&space->device()), data);
+ break;
+
+ case 1: /* SPRES - 5220 hard reset */
+ /* data == 0 means low, 1 means high */
+ logerror("%06X:SPRES=%d\n", cpu_get_previouspc(&space->device()), data);
+ break;
+
+ case 2: /* SPRATE */
+ /* data == 0 means 8kHz, 1 means 10kHz */
+ logerror("%06X:SPRATE=%d\n", cpu_get_previouspc(&space->device()), data);
+ break;
+
+ case 3: /* CRAMEN */
+ /* data == 0 means disable 68k access to COM320, 1 means enable */
+ state->m_cramen = data;
+ break;
+
+ case 4: /* RES320 */
+ logerror("%06X:RES320=%d\n", cpu_get_previouspc(&space->device()), data);
+ if (state->m_sounddsp != NULL)
+ device_set_input_line(state->m_sounddsp, INPUT_LINE_HALT, data ? CLEAR_LINE : ASSERT_LINE);
+ break;
+
+ case 7: /* LED */
+ break;
+ }
+}
+
+
+WRITE16_HANDLER( hdsnd68k_speech_w )
+{
+ logerror("%06X:hdsnd68k_speech_w(%04X)=%04X\n", cpu_get_previouspc(&space->device()), offset, data);
+}
+
+
+WRITE16_HANDLER( hdsnd68k_irqclr_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ state->m_irq68k = 0;
+ update_68k_interrupts(space->machine());
+}
+
+
+
+/*************************************
+ *
+ * TMS32010 access
+ *
+ *************************************/
+
+READ16_HANDLER( hdsnd68k_320ram_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ return state->m_sounddsp_ram[offset & 0xfff];
+}
+
+
+WRITE16_HANDLER( hdsnd68k_320ram_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ COMBINE_DATA(&state->m_sounddsp_ram[offset & 0xfff]);
+}
+
+
+READ16_HANDLER( hdsnd68k_320ports_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ address_space *iospace = state->m_sounddsp->memory().space(AS_IO);
+ return iospace->read_word((offset & 7) << 1);
+}
+
+
+WRITE16_HANDLER( hdsnd68k_320ports_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ address_space *iospace = state->m_sounddsp->memory().space(AS_IO);
+ iospace->write_word((offset & 7) << 1, data);
+}
+
+
+READ16_HANDLER( hdsnd68k_320com_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+
+ if (state->m_cramen)
+ return state->m_comram[offset & 0x1ff];
+
+ logerror("%06X:hdsnd68k_320com_r(%04X) -- not allowed\n", cpu_get_previouspc(&space->device()), offset);
+ return 0xffff;
+}
+
+
+WRITE16_HANDLER( hdsnd68k_320com_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+
+ if (state->m_cramen)
+ COMBINE_DATA(&state->m_comram[offset & 0x1ff]);
+ else
+ logerror("%06X:hdsnd68k_320com_w(%04X)=%04X -- not allowed\n", cpu_get_previouspc(&space->device()), offset, data);
+}
+
+
+
+/*************************************
+ *
+ * TMS32010 interrupts
+ *
+ *************************************/
+
+READ16_HANDLER( hdsnddsp_get_bio )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ UINT64 cycles_since_last_bio = state->m_sounddsp->total_cycles() - state->m_last_bio_cycles;
+ INT32 cycles_until_bio = CYCLES_PER_BIO - cycles_since_last_bio;
+
+ /* if we're not at the next BIO yet, advance us there */
+ if (cycles_until_bio > 0)
+ {
+ device_adjust_icount(&space->device(), -cycles_until_bio);
+ state->m_last_bio_cycles += CYCLES_PER_BIO;
+ }
+ else
+ state->m_last_bio_cycles = state->m_sounddsp->total_cycles();
+ return ASSERT_LINE;
+}
+
+
+
+/*************************************
+ *
+ * TMS32010 ports
+ *
+ *************************************/
+
+WRITE16_DEVICE_HANDLER( hdsnddsp_dac_w )
+{
+ harddriv_state *state = device->machine().driver_data<harddriv_state>();
+
+ /* DAC L */
+ if (!state->m_dacmute)
+ dac_signed_data_16_w(device, data ^ 0x8000);
+}
+
+
+WRITE16_HANDLER( hdsnddsp_comport_w )
+{
+ /* COM port TD0-7 */
+ logerror("%06X:hdsnddsp_comport_w=%d\n", cpu_get_previouspc(&space->device()), data);
+}
+
+
+WRITE16_HANDLER( hdsnddsp_mute_w )
+{
+ /* mute DAC audio, D0=1 */
+/* state->m_dacmute = data & 1; -- NOT STUFFED */
+ logerror("%06X:mute DAC=%d\n", cpu_get_previouspc(&space->device()), data);
+}
+
+
+WRITE16_HANDLER( hdsnddsp_gen68kirq_w )
+{
+ /* generate 68k IRQ */
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ state->m_irq68k = 1;
+ update_68k_interrupts(space->machine());
+}
+
+
+WRITE16_HANDLER( hdsnddsp_soundaddr_w )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ if (offset == 0)
+ {
+ /* select sound ROM block */
+ state->m_sound_rom_offs = (state->m_sound_rom_offs & 0xffff) | ((data & 15) << 16);
+ }
+ else
+ {
+ /* sound memory address */
+ state->m_sound_rom_offs = (state->m_sound_rom_offs & ~0xffff) | (data & 0xffff);
+ }
+}
+
+
+READ16_HANDLER( hdsnddsp_rom_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ if (state->m_sound_rom_offs < state->m_romsize)
+ return state->m_rombase[state->m_sound_rom_offs++] << 7;
+ state->m_sound_rom_offs++;
+ return 0;
+}
+
+
+READ16_HANDLER( hdsnddsp_comram_r )
+{
+ harddriv_state *state = space->machine().driver_data<harddriv_state>();
+ return state->m_comram[state->m_sound_rom_offs++ & 0x1ff];
+}
+
+
+READ16_HANDLER( hdsnddsp_compare_r )
+{
+ logerror("%06X:hdsnddsp_compare_r(%04X)\n", cpu_get_previouspc(&space->device()), offset);
+ return 0;
+}