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-rw-r--r--src/mame/machine/cdicdic.cpp1248
1 files changed, 1248 insertions, 0 deletions
diff --git a/src/mame/machine/cdicdic.cpp b/src/mame/machine/cdicdic.cpp
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index 00000000000..2337a0d4f1d
--- /dev/null
+++ b/src/mame/machine/cdicdic.cpp
@@ -0,0 +1,1248 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+/******************************************************************************
+
+
+ CD-i Mono-I CDIC MCU simulation
+ -------------------
+
+ written by Ryan Holtz
+
+
+*******************************************************************************
+
+STATUS:
+
+- Just enough for the Mono-I CD-i board to work somewhat properly.
+
+TODO:
+
+- Decapping and proper emulation.
+
+*******************************************************************************/
+
+#include "emu.h"
+#include "cpu/m68000/m68000.h"
+#include "cdrom.h"
+#include "machine/cdicdic.h"
+#include "includes/cdi.h"
+#include "sound/cdda.h"
+#include "imagedev/chd_cd.h"
+
+// device type definition
+const device_type MACHINE_CDICDIC = &device_creator<cdicdic_device>;
+
+#if ENABLE_VERBOSE_LOG
+INLINE void ATTR_PRINTF(3,4) verboselog(running_machine &machine, int n_level, const char *s_fmt, ...)
+{
+ if( VERBOSE_LEVEL >= n_level )
+ {
+ va_list v;
+ char buf[ 32768 ];
+ va_start( v, s_fmt );
+ vsprintf( buf, s_fmt, v );
+ va_end( v );
+ logerror( "%08x: %s", machine.device("maincpu")->safe_pc(), buf );
+ }
+}
+#else
+#define verboselog(x,y,z, ...)
+#endif
+
+#define CDIC_SECTOR_SYNC 0
+
+#define CDIC_SECTOR_HEADER 12
+
+#define CDIC_SECTOR_MODE 15
+
+#define CDIC_SECTOR_FILE1 16
+#define CDIC_SECTOR_CHAN1 17
+#define CDIC_SECTOR_SUBMODE1 18
+#define CDIC_SECTOR_CODING1 19
+
+#define CDIC_SECTOR_FILE2 20
+#define CDIC_SECTOR_CHAN2 21
+#define CDIC_SECTOR_SUBMODE2 22
+#define CDIC_SECTOR_CODING2 23
+
+#define CDIC_SECTOR_DATA 24
+
+#define CDIC_SECTOR_SIZE 2352
+
+#define CDIC_SECTOR_DATASIZE 2048
+#define CDIC_SECTOR_AUDIOSIZE 2304
+#define CDIC_SECTOR_VIDEOSIZE 2324
+
+#define CDIC_SUBMODE_EOF 0x80
+#define CDIC_SUBMODE_RT 0x40
+#define CDIC_SUBMODE_FORM 0x20
+#define CDIC_SUBMODE_TRIG 0x10
+#define CDIC_SUBMODE_DATA 0x08
+#define CDIC_SUBMODE_AUDIO 0x04
+#define CDIC_SUBMODE_VIDEO 0x02
+#define CDIC_SUBMODE_EOR 0x01
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const INT32 cdicdic_device::s_cdic_adpcm_filter_coef[5][2] =
+{
+ { 0,0 },
+ { 60,0 },
+ { 115,-52 },
+ { 98,-55 },
+ { 122,-60 },
+};
+
+//**************************************************************************
+// INLINES
+//**************************************************************************
+
+INLINE int CDIC_IS_VALID_SAMPLE_BUF(UINT16 *cdram, UINT16 addr)
+{
+ UINT8 *cdram8 = ((UINT8*)cdram) + addr + 8;
+ if(cdram8[2] != 0xff)
+ {
+ return 1;
+ }
+ return 0;
+}
+
+INLINE double CDIC_SAMPLE_BUF_FREQ(UINT16 *cdram, UINT16 addr)
+{
+ UINT8 *cdram8 = ((UINT8*)cdram) + addr + 8;
+ switch(cdram8[2] & 0x3f)
+ {
+ case 0:
+ case 1:
+ case 16:
+ case 17:
+ return 37800.0f;
+
+ case 4:
+ case 5:
+ return 18900.0f;
+
+ default:
+ return 18900.0f;
+ }
+}
+
+INLINE int CDIC_SAMPLE_BUF_SIZE(UINT16 *cdram, UINT16 addr)
+{
+ UINT8 *cdram8 = ((UINT8*)cdram) + addr + 8;
+ switch(cdram8[2] & 0x3f)
+ {
+ case 0:
+ case 4:
+ return 4;
+
+ case 1:
+ case 5:
+ case 16:
+ return 2;
+
+ case 17:
+ return 1;
+
+ default:
+ return 2;
+ }
+}
+
+INLINE INT16 clamp(INT16 in)
+{
+ return in;
+}
+
+//**************************************************************************
+// MEMBER FUNCTIONS
+//**************************************************************************
+
+UINT32 cdicdic_device::increment_cdda_frame_bcd(UINT32 bcd)
+{
+ UINT8 nybbles[6] =
+ {
+ bcd & 0x0000000f,
+ (bcd & 0x000000f0) >> 4,
+ (bcd & 0x00000f00) >> 8,
+ (bcd & 0x0000f000) >> 12,
+ (bcd & 0x000f0000) >> 16,
+ (bcd & 0x00f00000) >> 20
+ };
+ nybbles[0]++;
+ if(nybbles[0] == 5 && nybbles[1] == 7)
+ {
+ nybbles[0] = 0;
+ nybbles[1] = 0;
+ nybbles[2]++;
+ }
+ else if(nybbles[0] == 10)
+ {
+ nybbles[1]++;
+ }
+ if(nybbles[2] == 10)
+ {
+ nybbles[3]++;
+ nybbles[2] = 0;
+ }
+ if(nybbles[3] == 6)
+ {
+ nybbles[4]++;
+ nybbles[3] = 0;
+ }
+ if(nybbles[4] == 10)
+ {
+ nybbles[5]++;
+ nybbles[4] = 0;
+ }
+ return (nybbles[5] << 20) | (nybbles[4] << 16) | (nybbles[3] << 12) | (nybbles[2] << 8) | (nybbles[1] << 4) | nybbles[0];
+}
+
+UINT32 cdicdic_device::increment_cdda_sector_bcd(UINT32 bcd)
+{
+ UINT8 nybbles[6] =
+ {
+ bcd & 0x0000000f,
+ (bcd & 0x000000f0) >> 4,
+ (bcd & 0x00000f00) >> 8,
+ (bcd & 0x0000f000) >> 12,
+ (bcd & 0x000f0000) >> 16,
+ (bcd & 0x00f00000) >> 20
+ };
+ nybbles[2]++;
+ if(nybbles[2] == 10)
+ {
+ nybbles[3]++;
+ nybbles[2] = 0;
+ }
+ if(nybbles[3] == 6)
+ {
+ nybbles[4]++;
+ nybbles[3] = 0;
+ }
+ if(nybbles[4] == 10)
+ {
+ nybbles[5]++;
+ nybbles[4] = 0;
+ }
+ return (nybbles[5] << 20) | (nybbles[4] << 16) | (nybbles[3] << 12) | (nybbles[2] << 8) | (nybbles[1] << 4) | nybbles[0];
+}
+
+void cdicdic_device::decode_xa_mono(INT32 *cdic_xa_last, const UINT8 *xa, INT16 *dp)
+{
+ INT32 l0 = cdic_xa_last[0];
+ INT32 l1 = cdic_xa_last[1];
+
+ for(INT32 b = 0; b < 18; b++)
+ {
+ for(INT32 s = 0; s < 4; s++)
+ {
+ UINT8 flags = xa[(4 + (s << 1)) ^ 1];
+ UINT8 shift = flags & 0xf;
+ UINT8 filter = flags >> 4;
+ INT32 f0 = s_cdic_adpcm_filter_coef[filter][0];
+ INT32 f1 = s_cdic_adpcm_filter_coef[filter][1];
+
+ for(INT32 i = 0; i < 28; i++)
+ {
+ INT16 d = (xa[(16 + (i << 2) + s) ^ 1] & 0xf) << 12;
+ d = clamp((d >> shift) + (((l0 * f0) + (l1 * f1) + 32) >> 6));
+ *dp = d;
+ dp++;
+ l1 = l0;
+ l0 = d;
+ }
+
+ flags = xa[(5 + (s << 1)) ^ 1];
+ shift = flags & 0xf;
+ filter = flags >> 4;
+ f0 = s_cdic_adpcm_filter_coef[filter][0];
+ f1 = s_cdic_adpcm_filter_coef[filter][1];
+
+ for(INT32 i = 0; i < 28; i++)
+ {
+ INT16 d = (xa[(16 + (i << 2) + s) ^ 1] >> 4) << 12;
+ d = clamp((d >> shift) + (((l0 * f0) + (l1 * f1) + 32) >> 6));
+ *dp = d;
+ dp++;
+ l1 = l0;
+ l0 = d;
+ }
+ }
+
+ xa += 128;
+ }
+
+ cdic_xa_last[0] = l0;
+ cdic_xa_last[1] = l1;
+}
+
+void cdicdic_device::decode_xa_mono8(int *cdic_xa_last, const unsigned char *xa, signed short *dp)
+{
+ INT32 l0 = cdic_xa_last[0];
+ INT32 l1 = cdic_xa_last[1];
+
+ for(INT32 b = 0; b < 18; b++)
+ {
+ for(INT32 s = 0; s < 4; s++)
+ {
+ UINT8 flags = xa[(4 + s) ^ 1];
+ UINT8 shift = flags & 0xf;
+ UINT8 filter = flags >> 4;
+ INT32 f0 = s_cdic_adpcm_filter_coef[filter][0];
+ INT32 f1 = s_cdic_adpcm_filter_coef[filter][1];
+
+ for(INT32 i = 0; i < 28; i++)
+ {
+ INT16 d = (xa[(16 + (i << 2) + s) ^ 1] << 8);
+ d = clamp((d >> shift) + (((l0 * f0) + (l1 * f1) + 32) >> 6));
+ *dp = d;
+ dp++;
+ l1 = l0;
+ l0 = d;
+ }
+ }
+
+ xa += 128;
+ }
+
+ cdic_xa_last[0] = l0;
+ cdic_xa_last[1] = l1;
+}
+
+void cdicdic_device::decode_xa_stereo(INT32 *cdic_xa_last, const UINT8 *xa, INT16 *dp)
+{
+ INT32 l0=cdic_xa_last[0];
+ INT32 l1=cdic_xa_last[1];
+ INT32 l2=cdic_xa_last[2];
+ INT32 l3=cdic_xa_last[3];
+
+ for(INT32 b = 0; b < 18; b++)
+ {
+ for(INT32 s = 0; s < 4; s++)
+ {
+ UINT8 flags0 = xa[(4 + (s << 1)) ^ 1];
+ UINT8 shift0 = flags0 & 0xf;
+ UINT8 filter0 = flags0 >> 4;
+ UINT8 flags1 = xa[(5 + (s << 1)) ^ 1];
+ UINT8 shift1 = flags1 & 0xf;
+ UINT8 filter1 = flags1 >> 4;
+
+ INT32 f0 = s_cdic_adpcm_filter_coef[filter0][0];
+ INT32 f1 = s_cdic_adpcm_filter_coef[filter0][1];
+ INT32 f2 = s_cdic_adpcm_filter_coef[filter1][0];
+ INT32 f3 = s_cdic_adpcm_filter_coef[filter1][1];
+
+ for(INT32 i = 0; i < 28; i++)
+ {
+ INT16 d=xa[(16 + (i << 2) + s) ^ 1];
+ INT16 d0 = (d & 0xf) << 12;
+ INT16 d1 = (d >> 4) << 12;
+ d0 = clamp((d0 >> shift0) + (((l0 * f0) + (l1 * f1) + 32) >> 6));
+ *dp = d0;
+ dp++;
+ l1 = l0;
+ l0 = d0;
+
+ d1 = clamp((d1 >> shift1) + (((l2 * f2) + (l3 * f3) + 32) >> 6));
+ *dp = d1;
+ dp++;
+ l3 = l2;
+ l2 = d1;
+ }
+ }
+
+ xa += 128;
+ }
+
+ cdic_xa_last[0] = l0;
+ cdic_xa_last[1] = l1;
+ cdic_xa_last[2] = l2;
+ cdic_xa_last[3] = l3;
+}
+
+void cdicdic_device::decode_xa_stereo8(INT32 *cdic_xa_last, const UINT8 *xa, INT16 *dp)
+{
+ INT32 l0 = cdic_xa_last[0];
+ INT32 l1 = cdic_xa_last[1];
+ INT32 l2 = cdic_xa_last[2];
+ INT32 l3 = cdic_xa_last[3];
+
+ for(INT32 b = 0; b < 18; b++)
+ {
+ for(INT32 s = 0; s < 4; s += 2)
+ {
+ UINT8 flags0 = xa[(4 + s) ^ 1];
+ UINT8 shift0 = flags0 & 0xf;
+ UINT8 filter0 = flags0 >> 4;
+ UINT8 flags1 = xa[(5 + s) ^ 1];
+ UINT8 shift1 = flags1 & 0xf;
+ UINT8 filter1 = flags1 >> 4;
+ INT32 f0 = s_cdic_adpcm_filter_coef[filter0][0];
+ INT32 f1 = s_cdic_adpcm_filter_coef[filter0][1];
+ INT32 f2 = s_cdic_adpcm_filter_coef[filter1][0];
+ INT32 f3 = s_cdic_adpcm_filter_coef[filter1][1];
+
+ for(INT32 i = 0; i < 28; i++)
+ {
+ INT16 d0 = (xa[(16 + (i << 2) + s + 0) ^ 1] << 8);
+ INT16 d1 = (xa[(16 + (i << 2) + s + 1) ^ 1] << 8);
+
+ d0 = clamp((d0 >> shift0) + (((l0 * f0) + (l1 * f1) + 32) >> 6));
+ *dp = d0;
+ dp++;
+ l1 = l0;
+ l0 = d0;
+
+ d1 = clamp((d1 >> shift1) + (((l2 * f2) + (l3 * f3) + 32) >> 6));
+ *dp = d1;
+ dp++;
+ l3 = l2;
+ l2 = d1;
+ }
+ }
+
+ xa += 128;
+ }
+
+ cdic_xa_last[0] = l0;
+ cdic_xa_last[1] = l1;
+ cdic_xa_last[2] = l2;
+ cdic_xa_last[3] = l3;
+}
+
+void cdicdic_device::decode_audio_sector(const UINT8 *xa, INT32 triggered)
+{
+ // Get XA format from sector header
+
+ cdi_state *state = machine().driver_data<cdi_state>();
+ const UINT8 *hdr = xa + 4;
+ INT32 channels;
+ INT32 bits = 4;
+ INT32 index = 0;
+ INT16 samples[18*28*16+16];
+
+ if(hdr[2] == 0xff && triggered == 1)
+ {
+ return;
+ }
+
+ verboselog(machine(), 0, "decode_audio_sector, got header type %02x\n", hdr[2] );
+
+ switch(hdr[2] & 0x3f) // ignore emphasis and reserved bits
+ {
+ case 0:
+ channels = 1;
+ m_audio_sample_freq = 37800.0f; //18900.0f;
+ bits = 4;
+ m_audio_sample_size = 4;
+ break;
+
+ case 1:
+ channels=2;
+ m_audio_sample_freq=37800.0f;
+ bits=4;
+ m_audio_sample_size=2;
+ break;
+
+ case 4:
+ channels=1;
+ m_audio_sample_freq=18900.0f; ///2.0f;
+ bits=4;
+ m_audio_sample_size=4;
+ break;
+
+ case 5:
+ channels=2;
+ m_audio_sample_freq=18900.0f; //37800.0f/2.0f;
+ bits=4;
+ m_audio_sample_size=2;
+ break;
+
+ case 16:
+ channels=1;
+ m_audio_sample_freq=37800.0f;
+ bits=8;
+ m_audio_sample_size=2;
+ break;
+
+ case 17:
+ channels=2;
+ m_audio_sample_freq=37800.0f;
+ bits=8;
+ m_audio_sample_size=1;
+ break;
+
+ default:
+ fatalerror("play_xa: unhandled xa mode %08x\n",hdr[2]);
+ }
+
+ dmadac_set_frequency(&state->m_dmadac[0], 2, m_audio_sample_freq);
+ dmadac_enable(&state->m_dmadac[0], 2, 1);
+
+ switch(channels)
+ {
+ case 1:
+ switch(bits)
+ {
+ case 4:
+ decode_xa_mono(m_xa_last, hdr + 4, samples);
+ for(index = 18*28*8 - 1; index >= 0; index--)
+ {
+ samples[index*2 + 1] = samples[index];
+ samples[index*2 + 0] = samples[index];
+ }
+ samples[18*28*16 + 0] = samples[18*28*16 + 2] = samples[18*28*16 + 4] = samples[18*28*16 + 6] = samples[18*28*16 + 8] = samples[18*28*16 + 10] = samples[18*28*16 + 12] = samples[18*28*16 + 14] = samples[18*28*16 - 2];
+ samples[18*28*16 + 1] = samples[18*28*16 + 3] = samples[18*28*16 + 5] = samples[18*28*16 + 7] = samples[18*28*16 + 9] = samples[18*28*16 + 11] = samples[18*28*16 + 13] = samples[18*28*16 + 15] = samples[18*28*16 - 1];
+ break;
+ case 8:
+ decode_xa_mono8(m_xa_last, hdr + 4, samples);
+ for(index = 18*28*8 - 1; index >= 0; index--)
+ {
+ samples[index*2 + 1] = samples[index];
+ samples[index*2 + 0] = samples[index];
+ }
+ samples[18*28*8 + 0] = samples[18*28*8 + 2] = samples[18*28*8 + 4] = samples[18*28*8 + 6] = samples[18*28*8 + 8] = samples[18*28*8 + 10] = samples[18*28*8 + 12] = samples[18*28*8 + 14] = samples[18*28*8 - 2];
+ samples[18*28*8 + 1] = samples[18*28*8 + 3] = samples[18*28*8 + 5] = samples[18*28*8 + 7] = samples[18*28*8 + 9] = samples[18*28*8 + 11] = samples[18*28*8 + 13] = samples[18*28*8 + 15] = samples[18*28*8 - 1];
+ break;
+ }
+ break;
+ case 2:
+ switch(bits)
+ {
+ case 4:
+ decode_xa_stereo(m_xa_last, hdr + 4, samples);
+ samples[18*28*8 + 0] = samples[18*28*8 + 2] = samples[18*28*8 + 4] = samples[18*28*8 + 6] = samples[18*28*8 + 8] = samples[18*28*8 + 10] = samples[18*28*8 + 12] = samples[18*28*8 + 14] = samples[18*28*8 - 2];
+ samples[18*28*8 + 1] = samples[18*28*8 + 3] = samples[18*28*8 + 5] = samples[18*28*8 + 7] = samples[18*28*8 + 9] = samples[18*28*8 + 11] = samples[18*28*8 + 13] = samples[18*28*8 + 15] = samples[18*28*8 - 1];
+ //fwrite(samples, 1, 18*28*4*m_audio_sample_size, temp_adpcm);
+ break;
+ case 8:
+ decode_xa_stereo8(m_xa_last, hdr + 4, samples);
+ samples[18*28*4 + 0] = samples[18*28*4 + 2] = samples[18*28*4 + 4] = samples[18*28*4 + 6] = samples[18*28*4 + 8] = samples[18*28*4 + 10] = samples[18*28*4 + 12] = samples[18*28*4 + 14] = samples[18*28*4 - 2];
+ samples[18*28*4 + 1] = samples[18*28*4 + 3] = samples[18*28*4 + 5] = samples[18*28*4 + 7] = samples[18*28*4 + 9] = samples[18*28*4 + 11] = samples[18*28*4 + 13] = samples[18*28*4 + 15] = samples[18*28*4 - 1];
+ break;
+ }
+ break;
+ }
+
+ dmadac_transfer(&state->m_dmadac[0], 2, 1, 2, 18*28*2*m_audio_sample_size, samples);
+}
+
+// After an appropriate delay for decoding to take place...
+TIMER_CALLBACK_MEMBER( cdicdic_device::audio_sample_trigger )
+{
+ sample_trigger();
+}
+
+void cdicdic_device::sample_trigger()
+{
+ cdi_state *state = machine().driver_data<cdi_state>();
+
+ if(m_decode_addr == 0xffff)
+ {
+ verboselog(machine(), 0, "%s", "Decode stop requested, stopping playback\n" );
+ m_audio_sample_timer->adjust(attotime::never);
+ return;
+ }
+
+ if(!m_decode_delay)
+ {
+ // Indicate that data has been decoded
+ verboselog(machine(), 0, "%s", "Flagging that audio data has been decoded\n" );
+ m_audio_buffer |= 0x8000;
+
+ // Set the CDIC interrupt line
+ verboselog(machine(), 0, "%s", "Setting CDIC interrupt line for soundmap decode\n" );
+ state->m_maincpu->set_input_line_vector(M68K_IRQ_4, 128);
+ state->m_maincpu->set_input_line(M68K_IRQ_4, ASSERT_LINE);
+ }
+ else
+ {
+ m_decode_delay = 0;
+ }
+
+ if(CDIC_IS_VALID_SAMPLE_BUF(m_ram, m_decode_addr & 0x3ffe))
+ {
+ verboselog(machine(), 0, "Hit audio_sample_trigger, with m_decode_addr == %04x, calling decode_audio_sector\n", m_decode_addr );
+
+ // Decode the data at Z+4, the same offset as a normal CD sector.
+ decode_audio_sector(((UINT8*)m_ram) + (m_decode_addr & 0x3ffe) + 4, 1);
+
+ // Swap buffer positions to indicate our new buffer position at the next read
+ m_decode_addr ^= 0x1a00;
+
+ verboselog(machine(), 0, "Updated m_decode_addr, new value is %04x\n", m_decode_addr );
+
+ //// Delay for Frequency * (18*28*2*size in bytes) before requesting more data
+ verboselog(machine(), 0, "%s", "Data is valid, setting up a new callback\n" );
+ m_decode_period = attotime::from_hz(CDIC_SAMPLE_BUF_FREQ(m_ram, m_decode_addr & 0x3ffe)) * (18*28*2*CDIC_SAMPLE_BUF_SIZE(m_ram, m_decode_addr & 0x3ffe));
+ m_audio_sample_timer->adjust(m_decode_period);
+ //dmadac_enable(&dmadac[0], 2, 0);
+ }
+ else
+ {
+ // Swap buffer positions to indicate our new buffer position at the next read
+ m_decode_addr ^= 0x1a00;
+
+ verboselog(machine(), 0, "%s", "Data is not valid, indicating to shut down on the next audio sample\n" );
+ m_decode_addr = 0xffff;
+ m_audio_sample_timer->adjust(m_decode_period);
+ }
+}
+
+TIMER_CALLBACK_MEMBER( cdicdic_device::trigger_readback_int )
+{
+ process_delayed_command();
+}
+
+void cdicdic_device::process_delayed_command()
+{
+ cdi_state *state = machine().driver_data<cdi_state>();
+
+ switch(m_command)
+ {
+ case 0x23: // Reset Mode 1
+ case 0x24: // Reset Mode 2
+ case 0x29: // Read Mode 1
+ case 0x2a: // Read Mode 2
+ //case 0x2c: // Seek
+ {
+ UINT8 buffer[2560] = { 0 };
+ UINT32 msf = m_time >> 8;
+ UINT32 lba = 0;
+ int index = 0;
+ UINT8 nybbles[6] =
+ {
+ msf & 0x0000000f,
+ (msf & 0x000000f0) >> 4,
+ (msf & 0x00000f00) >> 8,
+ (msf & 0x0000f000) >> 12,
+ (msf & 0x000f0000) >> 16,
+ (msf & 0x00f00000) >> 20
+ };
+ if(msf & 0x000080)
+ {
+ msf &= 0xffff00;
+ nybbles[0] = 0;
+ nybbles[1] = 0;
+ }
+ if(nybbles[2] >= 2)
+ {
+ nybbles[2] -= 2;
+ }
+ else
+ {
+ nybbles[2] = 8 + nybbles[2];
+ if(nybbles[3] > 0)
+ {
+ nybbles[3]--;
+ }
+ else
+ {
+ nybbles[3] = 5;
+ if(nybbles[4] > 0)
+ {
+ nybbles[4]--;
+ }
+ else
+ {
+ nybbles[4] = 9;
+ nybbles[5]--;
+ }
+ }
+ }
+ lba = nybbles[0] + nybbles[1]*10 + ((nybbles[2] + nybbles[3]*10)*75) + ((nybbles[4] + nybbles[5]*10)*75*60);
+
+ //printf( "Reading Mode %d sector from MSF location %06x\n", m_command - 0x28, m_time | 2 );
+ verboselog(machine(), 0, "Reading Mode %d sector from MSF location %06x\n", m_command - 0x28, m_time | 2 );
+
+ cdrom_read_data(m_cd, lba, buffer, CD_TRACK_RAW_DONTCARE);
+
+ m_time += 0x100;
+ if((m_time & 0x00000f00) == 0x00000a00)
+ {
+ m_time &= 0xfffff0ff;
+ m_time += 0x00001000;
+ }
+ if((m_time & 0x0000ff00) == 0x00007500)
+ {
+ m_time &= 0xffff00ff;
+ m_time += 0x00010000;
+ if((m_time & 0x000f0000) == 0x000a0000)
+ {
+ m_time &= 0xfff0ffff;
+ m_time += 0x00100000;
+ }
+ }
+ if((m_time & 0x00ff0000) == 0x00600000)
+ {
+ m_time &= 0xff00ffff;
+ m_time += 0x01000000;
+ if((m_time & 0x0f000000) == 0x0a000000)
+ {
+ m_time &= 0xf0ffffff;
+ m_time += 0x10000000;
+ }
+ }
+
+ m_data_buffer &= ~0x0004;
+ m_data_buffer ^= 0x0001;
+
+ if((buffer[CDIC_SECTOR_FILE2] << 8) == m_file)
+ {
+ if(((buffer[CDIC_SECTOR_SUBMODE2] & (CDIC_SUBMODE_FORM | CDIC_SUBMODE_DATA | CDIC_SUBMODE_AUDIO | CDIC_SUBMODE_VIDEO)) == (CDIC_SUBMODE_FORM | CDIC_SUBMODE_AUDIO)) &&
+ (m_channel & m_audio_channel & (1 << buffer[CDIC_SECTOR_CHAN2])))
+ {
+ verboselog(machine(), 0, "%s", "Audio sector\n" );
+
+ m_x_buffer |= 0x8000;
+ //m_data_buffer |= 0x4000;
+ m_data_buffer |= 0x0004;
+
+ for(index = 6; index < 2352/2; index++)
+ {
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + (index - 6)] = (buffer[index*2] << 8) | buffer[index*2 + 1];
+ }
+
+ decode_audio_sector(((UINT8*)m_ram) + ((m_data_buffer & 5) * 0xa00 + 4), 0);
+
+ //printf( "Setting CDIC interrupt line\n" );
+ verboselog(machine(), 0, "%s", "Setting CDIC interrupt line for audio sector\n" );
+ state->m_maincpu->set_input_line_vector(M68K_IRQ_4, 128);
+ state->m_maincpu->set_input_line(M68K_IRQ_4, ASSERT_LINE);
+ }
+ else if((buffer[CDIC_SECTOR_SUBMODE2] & (CDIC_SUBMODE_DATA | CDIC_SUBMODE_AUDIO | CDIC_SUBMODE_VIDEO)) == 0x00)
+ {
+ m_x_buffer |= 0x8000;
+ //m_data_buffer |= 0x4000;
+
+ for(index = 6; index < 2352/2; index++)
+ {
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + (index - 6)] = (buffer[index*2] << 8) | buffer[index*2 + 1];
+ }
+
+ if((buffer[CDIC_SECTOR_SUBMODE2] & CDIC_SUBMODE_TRIG) == CDIC_SUBMODE_TRIG ||
+ (buffer[CDIC_SECTOR_SUBMODE2] & CDIC_SUBMODE_EOR) == CDIC_SUBMODE_EOR ||
+ (buffer[CDIC_SECTOR_SUBMODE2] & CDIC_SUBMODE_EOF) == CDIC_SUBMODE_EOF)
+ {
+ //printf( "Setting CDIC interrupt line\n" );
+ verboselog(machine(), 0, "%s", "Setting CDIC interrupt line for message sector\n" );
+ state->m_maincpu->set_input_line_vector(M68K_IRQ_4, 128);
+ state->m_maincpu->set_input_line(M68K_IRQ_4, ASSERT_LINE);
+ }
+ else
+ {
+ verboselog(machine(), 0, "%s", "Message sector, ignored\n" );
+ }
+ }
+ else
+ {
+ m_x_buffer |= 0x8000;
+ //m_data_buffer |= 0x4000;
+
+ for(index = 6; index < 2352/2; index++)
+ {
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + (index - 6)] = (buffer[index*2] << 8) | buffer[index*2 + 1];
+ }
+
+ //printf( "Setting CDIC interrupt line\n" );
+ verboselog(machine(), 0, "%s", "Setting CDIC interrupt line for data sector\n" );
+ state->m_maincpu->set_input_line_vector(M68K_IRQ_4, 128);
+ state->m_maincpu->set_input_line(M68K_IRQ_4, ASSERT_LINE);
+ }
+
+ if((buffer[CDIC_SECTOR_SUBMODE2] & CDIC_SUBMODE_EOF) == 0 && m_command != 0x23)
+ {
+ m_interrupt_timer->adjust(attotime::from_hz(75)); // 75Hz = 1x CD-ROM speed
+ }
+ else
+ {
+ if(m_command == 0x23) // Mode 1 Reset
+ {
+ m_interrupt_timer->adjust(attotime::never);
+ }
+ }
+ }
+
+ break;
+ }
+
+ case 0x2e: // Abort
+ m_interrupt_timer->adjust(attotime::never);
+ //m_data_buffer &= ~4;
+ break;
+
+ case 0x28: // Play CDDA audio
+ {
+ UINT8 buffer[2560] = { 0 };
+ int index = 0;
+ UINT32 msf = (m_time & 0xffff7f00) >> 8;
+ UINT32 next_msf = increment_cdda_frame_bcd((m_time & 0xffff7f00) >> 8);
+ UINT32 rounded_next_msf = increment_cdda_sector_bcd((m_time & 0xffff0000) >> 8);
+ UINT32 lba = 0;
+// UINT32 next_lba = 0;
+ UINT8 nybbles[6] =
+ {
+ msf & 0x0000000f,
+ (msf & 0x000000f0) >> 4,
+ (msf & 0x00000f00) >> 8,
+ (msf & 0x0000f000) >> 12,
+ (msf & 0x000f0000) >> 16,
+ (msf & 0x00f00000) >> 20
+ };
+/* UINT8 next_nybbles[6] =
+ {
+ rounded_next_msf & 0x0000000f,
+ (rounded_next_msf & 0x000000f0) >> 4,
+ (rounded_next_msf & 0x00000f00) >> 8,
+ (rounded_next_msf & 0x0000f000) >> 12,
+ (rounded_next_msf & 0x000f0000) >> 16,
+ (rounded_next_msf & 0x00f00000) >> 20
+ };*/
+
+ lba = nybbles[0] + nybbles[1]*10 + ((nybbles[2] + nybbles[3]*10)*75) + ((nybbles[4] + nybbles[5]*10)*75*60);
+
+ if(!cdrom_read_data(m_cd, lba, buffer, CD_TRACK_RAW_DONTCARE))
+ {
+ osd_printf_verbose("Unable to read CD-ROM data.\n");
+ }
+
+ if(!(msf & 0x0000ff))
+ {
+// next_lba = next_nybbles[0] + next_nybbles[1]*10 + ((next_nybbles[2] + next_nybbles[3]*10)*75) + ((next_nybbles[4] + next_nybbles[5]*10)*75*60);
+ verboselog(machine(), 0, "Playing CDDA sector from MSF location %06x\n", m_time | 2 );
+
+ state->m_cdda->start_audio(lba, rounded_next_msf);
+ }
+
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x924/2] = 0x0001; // CTRL
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x926/2] = 0x0001; // TRACK
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x928/2] = 0x0000; // INDEX
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x92a/2] = (m_time >> 24) & 0x000000ff; // MIN
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x92c/2] = (m_time >> 16) & 0x000000ff; // SEC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x92e/2] = (m_time >> 8) & 0x0000007f; // FRAC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x930/2] = 0x0000; // ZERO
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x932/2] = (m_time >> 24) & 0x000000ff; // AMIN
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x934/2] = (m_time >> 16) & 0x000000ff; // ASEC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x936/2] = (m_time >> 8) & 0x0000007f; // AFRAC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x938/2] = 0x0000; // CRC1
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x93a/2] = 0x0000; // CRC2
+
+ m_time = next_msf << 8;
+
+ // the following line BREAKS 'The Apprentice', hangs when you attempt to start the game
+ //m_interrupt_timer->adjust(attotime::from_hz(75));
+
+ m_x_buffer |= 0x8000;
+ //m_data_buffer |= 0x4000;
+
+ for(index = 6; index < 2352/2; index++)
+ {
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + (index - 6)] = (buffer[index*2] << 8) | buffer[index*2 + 1];
+ }
+
+ verboselog(machine(), 0, "%s", "Setting CDIC interrupt line for CDDA sector\n" );
+ state->m_maincpu->set_input_line_vector(M68K_IRQ_4, 128);
+ state->m_maincpu->set_input_line(M68K_IRQ_4, ASSERT_LINE);
+ break;
+ }
+ case 0x2c: // Seek
+ {
+ UINT8 buffer[2560] = { 0 };
+ int index = 0;
+ UINT32 msf = (m_time & 0xffff7f00) >> 8;
+ UINT32 next_msf = increment_cdda_frame_bcd((m_time & 0xffff7f00) >> 8);
+ UINT32 lba = 0;
+ UINT8 nybbles[6] =
+ {
+ msf & 0x0000000f,
+ (msf & 0x000000f0) >> 4,
+ (msf & 0x00000f00) >> 8,
+ (msf & 0x0000f000) >> 12,
+ (msf & 0x000f0000) >> 16,
+ (msf & 0x00f00000) >> 20
+ };
+ lba = nybbles[0] + nybbles[1]*10 + ((nybbles[2] + nybbles[3]*10)*75) + ((nybbles[4] + nybbles[5]*10)*75*60);
+
+ m_interrupt_timer->adjust(attotime::from_hz(75));
+
+ cdrom_read_data(m_cd, lba, buffer, CD_TRACK_RAW_DONTCARE);
+
+ m_data_buffer ^= 0x0001;
+ m_x_buffer |= 0x8000;
+ m_data_buffer |= 0x4000;
+
+ for(index = 6; index < 2352/2; index++)
+ {
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + (index - 6)] = (buffer[index*2] << 8) | buffer[index*2 + 1];
+ }
+
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x924/2] = 0x0041; // CTRL
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x926/2] = 0x0001; // TRACK
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x928/2] = 0x0000; // INDEX
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x92a/2] = (m_time >> 24) & 0x000000ff; // MIN
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x92c/2] = (m_time >> 16) & 0x000000ff; // SEC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x92e/2] = (m_time >> 8) & 0x0000007f; // FRAC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x930/2] = 0x0000; // ZERO
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x932/2] = (m_time >> 24) & 0x000000ff; // AMIN
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x934/2] = (m_time >> 16) & 0x000000ff; // ASEC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x936/2] = (m_time >> 8) & 0x0000007f; // AFRAC
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x938/2] = 0x0000; // CRC1
+ m_ram[(m_data_buffer & 5) * (0xa00/2) + 0x93a/2] = 0x0000; // CRC2
+
+ m_time = next_msf << 8;
+
+ verboselog(machine(), 0, "%s", "Setting CDIC interrupt line for Seek sector\n" );
+ state->m_maincpu->set_input_line_vector(M68K_IRQ_4, 128);
+ state->m_maincpu->set_input_line(M68K_IRQ_4, ASSERT_LINE);
+ break;
+ }
+ }
+}
+
+READ16_MEMBER( cdicdic_device::regs_r )
+{
+ cdi_state *state = machine().driver_data<cdi_state>();
+ UINT32 addr = offset + 0x3c00/2;
+
+ switch(addr)
+ {
+ case 0x3c00/2: // Command register
+ verboselog(machine(), 0, "cdic_r: Command Register = %04x & %04x\n", m_command, mem_mask);
+ return m_command;
+
+ case 0x3c02/2: // Time register (MSW)
+ verboselog(machine(), 0, "cdic_r: Time Register (MSW) = %04x & %04x\n", m_time >> 16, mem_mask);
+ return m_time >> 16;
+
+ case 0x3c04/2: // Time register (LSW)
+ verboselog(machine(), 0, "cdic_r: Time Register (LSW) = %04x & %04x\n", (UINT16)(m_time & 0x0000ffff), mem_mask);
+ return m_time & 0x0000ffff;
+
+ case 0x3c06/2: // File register
+ verboselog(machine(), 0, "cdic_r: File Register = %04x & %04x\n", m_file, mem_mask);
+ return m_file;
+
+ case 0x3c08/2: // Channel register (MSW)
+ verboselog(machine(), 0, "cdic_r: Channel Register (MSW) = %04x & %04x\n", m_channel >> 16, mem_mask);
+ return m_channel >> 16;
+
+ case 0x3c0a/2: // Channel register (LSW)
+ verboselog(machine(), 0, "cdic_r: Channel Register (LSW) = %04x & %04x\n", m_channel & 0x0000ffff, mem_mask);
+ return m_channel & 0x0000ffff;
+
+ case 0x3c0c/2: // Audio Channel register
+ verboselog(machine(), 0, "cdic_r: Audio Channel Register = %04x & %04x\n", m_audio_channel, mem_mask);
+ return m_audio_channel;
+
+ case 0x3ff4/2: // ABUF
+ {
+ UINT16 temp = m_audio_buffer;
+ m_audio_buffer &= 0x7fff;
+ if(!((m_audio_buffer | m_x_buffer) & 0x8000))
+ {
+ state->m_maincpu->set_input_line(M68K_IRQ_4, CLEAR_LINE);
+ verboselog(machine(), 0, "%s", "Clearing CDIC interrupt line\n" );
+ ////printf("Clearing CDIC interrupt line\n" );
+ }
+ verboselog(machine(), 0, "cdic_r: Audio Buffer Register = %04x & %04x\n", temp, mem_mask);
+ return temp;
+ }
+
+ case 0x3ff6/2: // XBUF
+ {
+ UINT16 temp = m_x_buffer;
+ m_x_buffer &= 0x7fff;
+ if(!((m_audio_buffer | m_x_buffer) & 0x8000))
+ {
+ state->m_maincpu->set_input_line(M68K_IRQ_4, CLEAR_LINE);
+ verboselog(machine(), 0, "%s", "Clearing CDIC interrupt line\n" );
+ ////printf("Clearing CDIC interrupt line\n" );
+ }
+ verboselog(machine(), 0, "cdic_r: X-Buffer Register = %04x & %04x\n", temp, mem_mask);
+ return temp;
+ }
+
+ case 0x3ffa/2: // AUDCTL
+ {
+ if(m_audio_sample_timer->remaining().is_never())
+ {
+ m_z_buffer ^= 0x0001;
+ }
+ verboselog(machine(), 0, "cdic_r: Z-Buffer Register = %04x & %04x\n", m_z_buffer, mem_mask);
+ return m_z_buffer;
+ }
+
+ case 0x3ffe/2:
+ {
+ verboselog(machine(), 0, "cdic_r: Data buffer Register = %04x & %04x\n", m_data_buffer, mem_mask);
+ return m_data_buffer;
+ }
+ default:
+ verboselog(machine(), 0, "cdic_r: UNIMPLEMENTED: Unknown address: %04x & %04x\n", addr*2, mem_mask);
+ return 0;
+ }
+}
+
+WRITE16_MEMBER( cdicdic_device::regs_w )
+{
+ cdi_state *state = machine().driver_data<cdi_state>();
+
+ UINT32 addr = offset + 0x3c00/2;
+
+ switch(addr)
+ {
+ case 0x3c00/2: // Command register
+ verboselog(machine(), 0, "cdic_w: Command Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_command);
+ break;
+
+ case 0x3c02/2: // Time register (MSW)
+ m_time &= ~(mem_mask << 16);
+ m_time |= (data & mem_mask) << 16;
+ verboselog(machine(), 0, "cdic_w: Time Register (MSW) = %04x & %04x\n", data, mem_mask);
+ break;
+
+ case 0x3c04/2: // Time register (LSW)
+ m_time &= ~mem_mask;
+ m_time |= data & mem_mask;
+ verboselog(machine(), 0, "cdic_w: Time Register (LSW) = %04x & %04x\n", data, mem_mask);
+ break;
+
+ case 0x3c06/2: // File register
+ verboselog(machine(), 0, "cdic_w: File Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_file);
+ break;
+
+ case 0x3c08/2: // Channel register (MSW)
+ m_channel &= ~(mem_mask << 16);
+ m_channel |= (data & mem_mask) << 16;
+ verboselog(machine(), 0, "cdic_w: Channel Register (MSW) = %04x & %04x\n", data, mem_mask);
+ break;
+
+ case 0x3c0a/2: // Channel register (LSW)
+ m_channel &= ~mem_mask;
+ m_channel |= data & mem_mask;
+ verboselog(machine(), 0, "cdic_w: Channel Register (LSW) = %04x & %04x\n", data, mem_mask);
+ break;
+
+ case 0x3c0c/2: // Audio Channel register
+ verboselog(machine(), 0, "cdic_w: Audio Channel Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_audio_channel);
+ break;
+
+ case 0x3ff4/2:
+ verboselog(machine(), 0, "cdic_w: Audio Buffer Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_audio_buffer);
+ break;
+
+ case 0x3ff6/2:
+ verboselog(machine(), 0, "cdic_w: X Buffer Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_x_buffer);
+ break;
+
+ case 0x3ff8/2:
+ {
+ UINT32 start = state->m_scc->dma().channel[0].memory_address_counter;
+ UINT32 count = state->m_scc->dma().channel[0].transfer_counter;
+ UINT32 index = 0;
+ UINT32 device_index = (data & 0x3fff) >> 1;
+ UINT16 *memory = state->m_planea;
+ verboselog(machine(), 0, "memory address counter: %08x\n", scc68070->dma.channel[0].memory_address_counter);
+ verboselog(machine(), 0, "cdic_w: DMA Control Register = %04x & %04x\n", data, mem_mask);
+ verboselog(machine(), 0, "Doing copy, transferring %04x bytes\n", count * 2 );
+ ////printf("Doing copy, transferring %04x bytes\n", count * 2 );
+ if((start & 0x00f00000) == 0x00200000)
+ {
+ start -= 0x00200000;
+ memory = state->m_planeb;
+ }
+ for(index = start / 2; index < (start / 2 + count); index++)
+ {
+ if(state->m_scc->dma().channel[0].operation_control & OCR_D)
+ {
+ memory[index] = m_ram[device_index++];
+ }
+ else
+ {
+ m_ram[device_index++] = memory[index];
+ }
+ }
+ state->m_scc->dma().channel[0].memory_address_counter += state->m_scc->dma().channel[0].transfer_counter * 2;
+ break;
+ }
+
+ case 0x3ffa/2:
+ {
+ verboselog(machine(), 0, "cdic_w: Z-Buffer Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_z_buffer);
+ if(m_z_buffer & 0x2000)
+ {
+ attotime period = m_audio_sample_timer->remaining();
+ if(period.is_never())
+ {
+ m_decode_addr = m_z_buffer & 0x3a00;
+ m_decode_delay = 1;
+ m_audio_sample_timer->adjust(attotime::from_hz(75));
+ }
+ }
+ else
+ {
+ m_decode_addr = 0xffff;
+ m_audio_sample_timer->adjust(attotime::never);
+ }
+ break;
+ }
+ case 0x3ffc/2:
+ verboselog(machine(), 0, "cdic_w: Interrupt Vector Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_interrupt_vector);
+ break;
+ case 0x3ffe/2:
+ {
+ verboselog(machine(), 0, "cdic_w: Data Buffer Register = %04x & %04x\n", data, mem_mask);
+ COMBINE_DATA(&m_data_buffer);
+ if(m_data_buffer & 0x8000)
+ {
+ switch(m_command)
+ {
+ //case 0x24: // Reset Mode 2
+ case 0x2e: // Abort
+ {
+ m_interrupt_timer->adjust(attotime::never);
+ dmadac_enable(&state->m_dmadac[0], 2, 0);
+ //m_data_buffer &= 0xbfff;
+ break;
+ }
+ case 0x2b: // Stop CDDA
+ state->m_cdda->stop_audio();
+ m_interrupt_timer->adjust(attotime::never);
+ break;
+ case 0x23: // Reset Mode 1
+ case 0x29: // Read Mode 1
+ case 0x2a: // Read Mode 2
+ case 0x28: // Play CDDA
+ case 0x2c: // Seek
+ {
+ attotime period = m_interrupt_timer->remaining();
+ if(!period.is_never())
+ {
+ m_interrupt_timer->adjust(period);
+ }
+ else
+ {
+ if(m_command != 0x23 && m_command != 0x24)
+ {
+ m_interrupt_timer->adjust(attotime::from_hz(75));
+ }
+ }
+ break;
+ }
+ default:
+ verboselog(machine(), 0, "Unknown CDIC command: %02x\n", m_command );
+ break;
+ }
+ }
+ m_data_buffer &= 0x7fff;
+ break;
+ }
+ default:
+ verboselog(machine(), 0, "cdic_w: UNIMPLEMENTED: Unknown address: %04x = %04x & %04x\n", addr*2, data, mem_mask);
+ break;
+ }
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// cdicdic_device - constructor
+//-------------------------------------------------
+
+cdicdic_device::cdicdic_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, MACHINE_CDICDIC, "CDICDIC", tag, owner, clock, "cdicdic", __FILE__)
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void cdicdic_device::device_start()
+{
+ save_item(NAME(m_command));
+ save_item(NAME(m_time));
+ save_item(NAME(m_file));
+ save_item(NAME(m_channel));
+ save_item(NAME(m_audio_channel));
+ save_item(NAME(m_audio_buffer));
+ save_item(NAME(m_x_buffer));
+ save_item(NAME(m_dma_control));
+ save_item(NAME(m_z_buffer));
+ save_item(NAME(m_interrupt_vector));
+ save_item(NAME(m_data_buffer));
+
+ save_item(NAME(m_audio_sample_freq));
+ save_item(NAME(m_audio_sample_size));
+
+ m_interrupt_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(cdicdic_device::trigger_readback_int), this));
+ m_interrupt_timer->adjust(attotime::never);
+
+ m_audio_sample_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(cdicdic_device::audio_sample_trigger), this));
+ m_audio_sample_timer->adjust(attotime::never);
+
+ m_ram = auto_alloc_array(machine(), UINT16, 0x3c00/2);
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void cdicdic_device::device_reset()
+{
+ cdi_state *state = machine().driver_data<cdi_state>();
+
+ m_command = 0;
+ m_time = 0;
+ m_file = 0;
+ m_channel = 0xffffffff;
+ m_audio_channel = 0xffff;
+ m_audio_buffer = 0;
+ m_x_buffer = 0;
+ m_dma_control = 0;
+ m_z_buffer = 0;
+ m_interrupt_vector = 0;
+ m_data_buffer = 0;
+
+ m_audio_sample_freq = 0;
+ m_audio_sample_size = 0;
+
+ m_decode_addr = 0;
+ m_decode_delay = 0;
+
+ cdrom_image_device *cdrom_dev = machine().device<cdrom_image_device>("cdrom");
+ if( cdrom_dev )
+ {
+ // MESS case (has CDROM device)
+ m_cd = cdrom_dev->get_cdrom_file();
+ state->m_cdda->set_cdrom(m_cd);
+ }
+ else
+ {
+ // MAME case
+ m_cd = cdrom_open(get_disk_handle(machine(), ":cdrom"));
+ state->m_cdda->set_cdrom(m_cd);
+ }
+}
+
+WRITE16_MEMBER( cdicdic_device::ram_w )
+{
+ COMBINE_DATA(&m_ram[offset]);
+}
+
+READ16_MEMBER( cdicdic_device::ram_r )
+{
+ return m_ram[offset];
+}