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-rw-r--r--src/mame/machine/cubocd32.c892
1 files changed, 892 insertions, 0 deletions
diff --git a/src/mame/machine/cubocd32.c b/src/mame/machine/cubocd32.c
new file mode 100644
index 00000000000..93c1898dfbc
--- /dev/null
+++ b/src/mame/machine/cubocd32.c
@@ -0,0 +1,892 @@
+#include "driver.h"
+#include "includes/amiga.h"
+#include "cdrom.h"
+#include "coreutil.h"
+#include "sound/cdda.h"
+#include "machine/i2cmem.h"
+
+
+/*********************************************************************************
+
+ Akiko custom chip emulation
+
+The Akiko chip has:
+- built in 1KB NVRAM
+- chunky to planar converter
+- custom CDROM controller
+
+TODO: Add CDDA support
+
+*********************************************************************************/
+
+#define LOG_AKIKO 0
+#define LOG_AKIKO_CD 0
+
+#define CD_SECTOR_TIME (1000/((150*1024)/2048)) /* 1X CDROM sector time in msec (300KBps) */
+
+
+#define NVRAM_SIZE 1024
+#define NVRAM_PAGE_SIZE 16 /* max size of one write request */
+
+static struct akiko_def
+{
+ /* chunky to planar converter */
+ UINT32 c2p_input_buffer[8];
+ UINT32 c2p_output_buffer[8];
+ UINT32 c2p_input_index;
+ UINT32 c2p_output_index;
+
+ /* i2c bus */
+ int i2c_scl_out;
+ int i2c_scl_dir;
+ int i2c_sda_out;
+ int i2c_sda_dir;
+
+ /* cdrom */
+ UINT32 cdrom_status[2];
+ UINT32 cdrom_address[2];
+ UINT32 cdrom_track_index;
+ UINT32 cdrom_lba_start;
+ UINT32 cdrom_lba_end;
+ UINT32 cdrom_lba_cur;
+ UINT16 cdrom_readmask;
+ UINT16 cdrom_readreqmask;
+ UINT32 cdrom_dmacontrol;
+ UINT32 cdrom_numtracks;
+ UINT8 cdrom_speed;
+ UINT8 cdrom_cmd_start;
+ UINT8 cdrom_cmd_end;
+ UINT8 cdrom_cmd_resp;
+ cdrom_file *cdrom;
+ UINT8 * cdrom_toc;
+ emu_timer *dma_timer;
+ emu_timer *frame_timer;
+} akiko;
+
+static TIMER_CALLBACK(akiko_dma_proc);
+static TIMER_CALLBACK(akiko_frame_proc);
+
+void amiga_akiko_init(void)
+{
+ i2cmem_init( 0, I2CMEM_SLAVE_ADDRESS, NVRAM_PAGE_SIZE, NVRAM_SIZE, NULL );
+
+ akiko.c2p_input_index = 0;
+ akiko.c2p_output_index = 0;
+
+ akiko.i2c_scl_out = 0;
+ akiko.i2c_scl_dir = 0;
+ akiko.i2c_sda_out = 0;
+ akiko.i2c_sda_dir = 0;
+
+ akiko.cdrom_status[0] = akiko.cdrom_status[1] = 0;
+ akiko.cdrom_address[0] = akiko.cdrom_address[1] = 0;
+ akiko.cdrom_track_index = 0;
+ akiko.cdrom_lba_start = 0;
+ akiko.cdrom_lba_end = 0;
+ akiko.cdrom_lba_cur = 0;
+ akiko.cdrom_readmask = 0;
+ akiko.cdrom_readreqmask = 0;
+ akiko.cdrom_dmacontrol = 0;
+ akiko.cdrom_numtracks = 0;
+ akiko.cdrom_speed = 0;
+ akiko.cdrom_cmd_start = 0;
+ akiko.cdrom_cmd_end = 0;
+ akiko.cdrom_cmd_resp = 0;
+ akiko.cdrom = cdrom_open(get_disk_handle(0));
+ akiko.cdrom_toc = NULL;
+ akiko.dma_timer = timer_alloc(akiko_dma_proc);
+ akiko.frame_timer = timer_alloc(akiko_frame_proc);
+
+ /* create the TOC table */
+ if ( akiko.cdrom != NULL && cdrom_get_last_track(akiko.cdrom) )
+ {
+ UINT8 *p;
+ int i, addrctrl = cdrom_get_adr_control( akiko.cdrom, 0 );
+ UINT32 discend;
+
+ discend = cdrom_get_track_start(akiko.cdrom,cdrom_get_last_track(akiko.cdrom)-1);
+ discend += cdrom_get_toc(akiko.cdrom)->tracks[cdrom_get_last_track(akiko.cdrom)-1].frames;
+ discend = lba_to_msf(discend);
+
+ akiko.cdrom_numtracks = cdrom_get_last_track(akiko.cdrom)+3;
+
+ akiko.cdrom_toc = (UINT8*)auto_malloc(13*akiko.cdrom_numtracks);
+ memset( akiko.cdrom_toc, 0, 13*akiko.cdrom_numtracks);
+
+ p = akiko.cdrom_toc;
+ p[1] = ((addrctrl & 0x0f) << 4) | ((addrctrl & 0xf0) >> 4);
+ p[3] = 0xa0; /* first track */
+ p[8] = 1;
+ p += 13;
+ p[1] = 0x01;
+ p[3] = 0xa1; /* last track */
+ p[8] = cdrom_get_last_track(akiko.cdrom);
+ p += 13;
+ p[1] = 0x01;
+ p[3] = 0xa2; /* disc end */
+ p[8] = (discend >> 16 ) & 0xff;
+ p[9] = (discend >> 8 ) & 0xff;
+ p[10] = discend & 0xff;
+ p += 13;
+
+ for( i = 0; i < cdrom_get_last_track(akiko.cdrom); i++ )
+ {
+ UINT32 trackpos = cdrom_get_track_start(akiko.cdrom,i);
+
+ trackpos = lba_to_msf(trackpos);
+ addrctrl = cdrom_get_adr_control( akiko.cdrom, i );
+
+ p[1] = ((addrctrl & 0x0f) << 4) | ((addrctrl & 0xf0) >> 4);
+ p[3] = dec_2_bcd( i+1 );
+ p[8] = (trackpos >> 16 ) & 0xff;
+ p[9] = (trackpos >> 8 ) & 0xff;
+ p[10] = trackpos & 0xff;
+
+ p += 13;
+ }
+ }
+}
+
+static void akiko_nvram_write(UINT32 data)
+{
+ akiko.i2c_scl_out = BIT(data,31);
+ akiko.i2c_sda_out = BIT(data,30);
+ akiko.i2c_scl_dir = BIT(data,15);
+ akiko.i2c_sda_dir = BIT(data,14);
+
+ i2cmem_write( 0, I2CMEM_SCL, akiko.i2c_scl_out );
+ i2cmem_write( 0, I2CMEM_SDA, akiko.i2c_sda_out );
+}
+
+static UINT32 akiko_nvram_read(void)
+{
+ UINT32 v = 0;
+
+ if ( akiko.i2c_scl_dir )
+ {
+ v |= akiko.i2c_scl_out << 31;
+ }
+ else
+ {
+ v |= 0 << 31;
+ }
+
+ if ( akiko.i2c_sda_dir )
+ {
+ v |= akiko.i2c_sda_out << 30;
+ }
+ else
+ {
+ v |= i2cmem_read( 0, I2CMEM_SDA ) << 30;
+ }
+
+ v |= akiko.i2c_scl_dir << 15;
+ v |= akiko.i2c_sda_dir << 14;
+
+ return v;
+}
+
+NVRAM_HANDLER( cd32 )
+{
+ nvram_handler_i2cmem_0( machine, file, read_or_write );
+}
+
+/*************************************
+ *
+ * Akiko Chunky to Planar converter
+ *
+ ************************************/
+
+static void akiko_c2p_write(UINT32 data)
+{
+ akiko.c2p_input_buffer[akiko.c2p_input_index] = data;
+ akiko.c2p_input_index++;
+ akiko.c2p_input_index &= 7;
+ akiko.c2p_output_index = 0;
+}
+
+static UINT32 akiko_c2p_read(void)
+{
+ UINT32 val;
+
+ if ( akiko.c2p_output_index == 0 )
+ {
+ int i;
+
+ for ( i = 0; i < 8; i++ )
+ akiko.c2p_output_buffer[i] = 0;
+
+ for (i = 0; i < 8 * 32; i++) {
+ if (akiko.c2p_input_buffer[7 - (i >> 5)] & (1 << (i & 31)))
+ akiko.c2p_output_buffer[i & 7] |= 1 << (i >> 3);
+ }
+ }
+ akiko.c2p_input_index = 0;
+ val = akiko.c2p_output_buffer[akiko.c2p_output_index];
+ akiko.c2p_output_index++;
+ akiko.c2p_output_index &= 7;
+ return val;
+}
+
+#if LOG_AKIKO
+static const char* akiko_reg_names[] =
+{
+ /*0*/ "ID",
+ /*1*/ "CDROM STATUS 1",
+ /*2*/ "CDROM_STATUS 2",
+ /*3*/ "???",
+ /*4*/ "CDROM ADDRESS 1",
+ /*5*/ "CDROM ADDRESS 2",
+ /*6*/ "CDROM COMMAND 1",
+ /*7*/ "CDROM COMMAND 2",
+ /*8*/ "CDROM READMASK",
+ /*9*/ "CDROM DMACONTROL",
+ /*A*/ "???",
+ /*B*/ "???",
+ /*C*/ "NVRAM",
+ /*D*/ "???",
+ /*E*/ "C2P"
+};
+
+const char* get_akiko_reg_name(int reg)
+{
+ if (reg < 0xf )
+ {
+ return akiko_reg_names[reg];
+ }
+ else
+ {
+ return "???";
+ }
+}
+#endif
+
+/*************************************
+ *
+ * Akiko CDROM Controller
+ *
+ ************************************/
+
+static void akiko_cdda_stop( void )
+{
+ int cddanum = cdda_num_from_cdrom(akiko.cdrom);
+
+ if (cddanum != -1)
+ {
+ cdda_stop_audio(cddanum);
+ timer_reset( akiko.frame_timer, attotime_never );
+ }
+}
+
+static void akiko_cdda_play( UINT32 lba, UINT32 num_blocks )
+{
+ int cddanum = cdda_num_from_cdrom(akiko.cdrom);
+ if (cddanum != -1)
+ {
+ cdda_start_audio(cddanum, lba, num_blocks);
+ timer_adjust( akiko.frame_timer, ATTOTIME_IN_HZ( 75 ), 0, attotime_zero );
+ }
+}
+
+static void akiko_cdda_pause( int pause )
+{
+ int cddanum = cdda_num_from_cdrom(akiko.cdrom);
+ if (cddanum != -1)
+ {
+ if (cdda_audio_active(cddanum) && cdda_audio_paused(cddanum) != pause )
+ {
+ cdda_pause_audio(cddanum, pause);
+
+ if ( pause )
+ {
+ timer_reset( akiko.frame_timer, attotime_never );
+ }
+ else
+ {
+ timer_adjust( akiko.frame_timer, ATTOTIME_IN_HZ( 75 ), 0, attotime_zero );
+ }
+ }
+ }
+}
+
+static UINT8 akiko_cdda_getstatus( UINT32 *lba )
+{
+ int cddanum = cdda_num_from_cdrom(akiko.cdrom);
+
+ if ( lba ) *lba = 0;
+
+ if (cddanum != -1)
+ {
+ if (cdda_audio_active(cddanum))
+ {
+ if ( lba ) *lba = cdda_get_audio_lba(cddanum);
+
+ if (cdda_audio_paused(cddanum))
+ {
+ return 0x12; /* audio paused */
+ }
+ else
+ {
+ return 0x11; /* audio in progress */
+ }
+ }
+ else if (cdda_audio_ended(cddanum))
+ {
+ return 0x13; /* audio ended */
+ }
+ }
+
+ return 0x15; /* no audio status */
+}
+
+static void akiko_set_cd_status( UINT32 status )
+{
+ akiko.cdrom_status[0] |= status;
+
+ if ( akiko.cdrom_status[0] & akiko.cdrom_status[1] )
+ {
+#if LOG_AKIKO_CD
+ logerror( "Akiko CD IRQ\n" );
+#endif
+ amiga_custom_w(REG_INTREQ, 0x8000 | INTENA_PORTS, 0);
+ }
+}
+
+static TIMER_CALLBACK(akiko_frame_proc)
+{
+ int cddanum = cdda_num_from_cdrom(akiko.cdrom);
+
+ (void)param;
+
+ if (cddanum != -1)
+ {
+ UINT8 s = akiko_cdda_getstatus(NULL);
+
+ if ( s == 0x11 )
+ {
+ akiko_set_cd_status( 0x80000000 ); /* subcode ready */
+ }
+
+ timer_adjust( akiko.frame_timer, ATTOTIME_IN_HZ( 75 ), 0, attotime_zero );
+ }
+}
+
+static UINT32 lba_from_triplet( UINT8 *triplet )
+{
+ UINT32 r;
+
+ r = bcd_2_dec(triplet[0]) * (60*75);
+ r += bcd_2_dec(triplet[1]) * 75;
+ r += bcd_2_dec(triplet[2]);
+
+ return r;
+}
+
+static TIMER_CALLBACK(akiko_dma_proc)
+{
+ UINT8 buf[2352];
+ int index;
+
+ if ( (akiko.cdrom_dmacontrol & 0x04000000) == 0 )
+ return;
+
+ if ( akiko.cdrom_readreqmask == 0 )
+ return;
+
+ index = (akiko.cdrom_lba_cur - akiko.cdrom_lba_start) & 0x0f;
+
+ if ( akiko.cdrom_readreqmask & ( 1 << index ) )
+ {
+ UINT32 track = cdrom_get_track( akiko.cdrom, akiko.cdrom_lba_cur );
+ UINT32 datasize = cdrom_get_toc( akiko.cdrom )->tracks[track].datasize;
+ UINT32 subsize = cdrom_get_toc( akiko.cdrom )->tracks[track].subsize;
+ UINT32 secsize = datasize + subsize;
+ int i;
+
+ if ( secsize <= (2352-16) )
+ {
+ UINT32 curmsf = lba_to_msf( akiko.cdrom_lba_cur );
+ memset( buf, 0, 16 );
+
+ buf[3] = akiko.cdrom_lba_cur - akiko.cdrom_lba_start;
+ memset( &buf[4], 0xff, 8 );
+
+ buf[12] = (curmsf >> 16) & 0xff;
+ buf[13] = (curmsf >> 8) & 0xff;
+ buf[14] = curmsf & 0xff;
+ buf[15] = 0x01; /* mode1 */
+
+ if ( !cdrom_read_data( akiko.cdrom, akiko.cdrom_lba_cur, &buf[16], CD_TRACK_RAW_DONTCARE ) )
+ {
+ logerror( "AKIKO: Read error trying to read sector %08x!\n", akiko.cdrom_lba_cur );
+ return;
+ }
+
+ if ( subsize )
+ {
+ if ( !cdrom_read_subcode( akiko.cdrom, akiko.cdrom_lba_cur, &buf[16+datasize] ) )
+ {
+ logerror( "AKIKO: Read error trying to read subcode for sector %08x!\n", akiko.cdrom_lba_cur );
+ return;
+ }
+ }
+ }
+ else
+ {
+ if ( !cdrom_read_data( akiko.cdrom, akiko.cdrom_lba_cur, buf, CD_TRACK_RAW_DONTCARE) )
+ {
+ logerror( "AKIKO: Read error trying to read sector %08x!\n", akiko.cdrom_lba_cur );
+ return;
+ }
+
+ if ( subsize )
+ {
+ if ( !cdrom_read_subcode( akiko.cdrom, akiko.cdrom_lba_cur, &buf[datasize] ) )
+ {
+ logerror( "AKIKO: Read error trying to read subcode for sector %08x!\n", akiko.cdrom_lba_cur );
+ return;
+ }
+ }
+ }
+
+#if LOG_AKIKO_CD
+ logerror( "DMA: sector %d - address %08x\n", akiko.cdrom_lba_cur, akiko.cdrom_address[0] + (index*4096) );
+#endif
+
+ for( i = 0; i < 2352; i += 2 )
+ {
+ UINT16 data;
+
+ data = buf[i];
+ data <<= 8;
+ data |= buf[i+1];
+
+ amiga_chip_ram_w( akiko.cdrom_address[0] + (index*4096) + i, data );
+ }
+
+ akiko.cdrom_readmask |= ( 1 << index );
+ akiko.cdrom_readreqmask &= ~( 1 << index );
+ akiko.cdrom_lba_cur++;
+ }
+
+ if ( akiko.cdrom_readreqmask == 0 )
+ akiko_set_cd_status(0x04000000);
+ else
+ timer_adjust( akiko.dma_timer, ATTOTIME_IN_USEC( CD_SECTOR_TIME / akiko.cdrom_speed ), 0, attotime_zero );
+}
+
+static void akiko_start_dma( void )
+{
+ if ( akiko.cdrom_readreqmask == 0 )
+ return;
+
+ if ( akiko.cdrom_lba_start > akiko.cdrom_lba_end )
+ return;
+
+ if ( akiko.cdrom_speed == 0 )
+ return;
+
+ akiko.cdrom_lba_cur = akiko.cdrom_lba_start;
+
+ timer_adjust( akiko.dma_timer, ATTOTIME_IN_USEC( CD_SECTOR_TIME / akiko.cdrom_speed ), 0, attotime_zero );
+}
+
+static void akiko_setup_response( int len, UINT8 *r1 )
+{
+ int resp_addr = akiko.cdrom_address[1];
+ UINT8 resp_csum = 0xff;
+ UINT8 resp_buffer[32];
+ int i;
+
+ memset( resp_buffer, 0, sizeof( resp_buffer ) );
+
+ for( i = 0; i < len; i++ )
+ {
+ resp_buffer[i] = r1[i];
+ resp_csum -= resp_buffer[i];
+ }
+
+ resp_buffer[len++] = resp_csum;
+
+ for( i = 0; i < len; i++ )
+ {
+ program_write_byte( resp_addr + ((akiko.cdrom_cmd_resp + i) & 0xff), resp_buffer[i] );
+ }
+
+ akiko.cdrom_cmd_resp = (akiko.cdrom_cmd_resp+len) & 0xff;
+
+ akiko_set_cd_status( 0x10000000 ); /* new data available */
+}
+
+static TIMER_CALLBACK( akiko_cd_delayed_cmd )
+{
+ UINT8 resp[32];
+ UINT8 cddastatus;
+
+ if ( akiko.cdrom_status[0] & 0x10000000 )
+ return;
+
+ cddastatus = akiko_cdda_getstatus(NULL);
+
+ if ( cddastatus == 0x11 || cddastatus == 0x12 )
+ return;
+
+ memset( resp, 0, sizeof( resp ) );
+ resp[0] = param;
+
+ param &= 0x0f;
+
+ if ( param == 0x05 )
+ {
+#if LOG_AKIKO_CD
+ logerror( "AKIKO: Completing Command %d\n", param );
+#endif
+
+ resp[0] = 0x06;
+
+ if ( akiko.cdrom == NULL || akiko.cdrom_numtracks == 0 )
+ {
+ resp[1] = 0x80;
+ akiko_setup_response( 15, resp );
+ }
+ else
+ {
+ resp[1] = 0x00;
+ memcpy( &resp[2], &akiko.cdrom_toc[13*akiko.cdrom_track_index], 13 );
+
+ akiko.cdrom_track_index = ( akiko.cdrom_track_index + 1 ) % akiko.cdrom_numtracks;
+
+ akiko_setup_response( 15, resp );
+ }
+ }
+}
+
+static void akiko_update_cdrom( void )
+{
+ UINT8 resp[32], cmdbuf[32];
+
+ if ( akiko.cdrom_status[0] & 0x10000000 )
+ return;
+
+ while ( akiko.cdrom_cmd_start != akiko.cdrom_cmd_end )
+ {
+ UINT32 cmd_addr = akiko.cdrom_address[1] + 0x200 + akiko.cdrom_cmd_start;
+ int cmd = program_read_byte( cmd_addr );
+
+ memset( resp, 0, sizeof( resp ) );
+ resp[0] = cmd;
+
+ cmd &= 0x0f;
+
+#if LOG_AKIKO_CD
+ logerror( "CDROM command: %02X\n", cmd );
+#endif
+
+ if ( cmd == 0x02 ) /* pause audio */
+ {
+ resp[1] = 0x00;
+
+ if ( akiko_cdda_getstatus(NULL) == 0x11 )
+ resp[1] = 0x08;
+
+ akiko_cdda_pause( 1 );
+
+ akiko.cdrom_cmd_start = (akiko.cdrom_cmd_start+2) & 0xff;
+
+ akiko_setup_response( 2, resp );
+ }
+ else if ( cmd == 0x03 ) /* unpause audio (and check audiocd playing status) */
+ {
+ resp[1] = 0x00;
+
+ if ( akiko_cdda_getstatus(NULL) == 0x11 )
+ resp[1] = 0x08;
+
+ akiko_cdda_pause( 0 );
+
+ akiko.cdrom_cmd_start = (akiko.cdrom_cmd_start+2) & 0xff;
+
+ akiko_setup_response( 2, resp );
+ }
+ else if ( cmd == 0x04 ) /* seek/read/play cd multi command */
+ {
+ int i;
+ UINT32 startpos, endpos;
+
+ for( i = 0; i < 13; i++ )
+ {
+ cmdbuf[i] = program_read_byte( cmd_addr );
+ cmd_addr &= 0xffffff00;
+ cmd_addr += ( akiko.cdrom_cmd_start + i + 1 ) & 0xff;
+ }
+
+ akiko.cdrom_cmd_start = (akiko.cdrom_cmd_start+13) & 0xff;
+
+ if ( akiko.cdrom == NULL || akiko.cdrom_numtracks == 0 )
+ {
+ resp[1] = 0x80;
+ akiko_setup_response( 2, resp );
+ }
+ else
+ {
+ startpos = lba_from_triplet( &cmdbuf[1] );
+ endpos = lba_from_triplet( &cmdbuf[4] );
+
+ akiko_cdda_stop();
+
+ resp[1] = 0x00;
+
+ if ( cmdbuf[7] == 0x80 )
+ {
+#if LOG_AKIKO_CD
+ logerror( "AKIKO CD: PC:%06x Data read - start lba: %08x - end lba: %08x\n", safe_activecpu_get_pc(), startpos, endpos );
+#endif
+ akiko.cdrom_speed = (cmdbuf[8] & 0x40) ? 2 : 1;
+ akiko.cdrom_lba_start = startpos;
+ akiko.cdrom_lba_end = endpos;
+
+ resp[1] = 0x02;
+ }
+ else if ( cmdbuf[10] & 0x04 )
+ {
+ logerror( "AKIKO CD: Audio Play - start lba: %08x - end lba: %08x\n", startpos, endpos );
+ akiko_cdda_play( startpos, endpos - startpos );
+ resp[1] = 0x08;
+ }
+ else
+ {
+#if LOG_AKIKO_CD
+ logerror( "AKIKO CD: Seek - start lba: %08x - end lba: %08x\n", startpos, endpos );
+#endif
+ akiko.cdrom_track_index = 0;
+
+ for( i = 0; i < cdrom_get_last_track(akiko.cdrom); i++ )
+ {
+ if ( startpos <= cdrom_get_track_start( akiko.cdrom, i ) )
+ {
+ /* reset to 0 */
+ akiko.cdrom_track_index = i + 2;
+ akiko.cdrom_track_index %= akiko.cdrom_numtracks;
+ break;
+ }
+ }
+ }
+
+ akiko_setup_response( 2, resp );
+ }
+ }
+ else if ( cmd == 0x05 ) /* read toc */
+ {
+ akiko.cdrom_cmd_start = (akiko.cdrom_cmd_start+3) & 0xff;
+
+ timer_set( ATTOTIME_IN_MSEC(1), resp[0], akiko_cd_delayed_cmd );
+
+ break;
+ }
+ else if ( cmd == 0x06 ) /* read subq */
+ {
+ UINT32 lba;
+
+ resp[1] = 0x00;
+
+ (void)akiko_cdda_getstatus( &lba );
+
+ if ( lba > 0 )
+ {
+ UINT32 disk_pos;
+ UINT32 track_pos;
+ UINT32 track;
+ int addrctrl;
+
+ track = cdrom_get_track(akiko.cdrom, lba);
+ addrctrl = cdrom_get_adr_control(akiko.cdrom, track);
+
+ resp[2] = 0x00;
+ resp[3] = ((addrctrl & 0x0f) << 4) | ((addrctrl & 0xf0) >> 4);
+ resp[4] = dec_2_bcd(track+1);
+ resp[5] = 0; /* index */
+
+ disk_pos = lba_to_msf(lba);
+ track_pos = lba_to_msf(lba - cdrom_get_track_start(akiko.cdrom, track));
+
+ /* track position */
+ resp[6] = (track_pos >> 16) & 0xff;
+ resp[7] = (track_pos >> 8) & 0xff;
+ resp[8] = track_pos & 0xff;
+
+ /* disk position */
+ resp[9] = (disk_pos >> 24) & 0xff;
+ resp[10] = (disk_pos >> 16) & 0xff;
+ resp[11] = (disk_pos >> 8) & 0xff;
+ resp[12] = disk_pos & 0xff;
+ }
+ else
+ {
+ resp[1] = 0x80;
+ }
+
+ akiko_setup_response( 15, resp );
+ }
+ else if ( cmd == 0x07 ) /* check door status */
+ {
+ resp[1] = 0x01;
+
+ akiko.cdrom_cmd_start = (akiko.cdrom_cmd_start+2) & 0xff;
+
+ if ( akiko.cdrom == NULL || akiko.cdrom_numtracks == 0 )
+ resp[1] = 0x80;
+
+ akiko_setup_response( 20, resp );
+ break;
+ }
+ else
+ {
+ break;
+ }
+ }
+}
+
+READ32_HANDLER(amiga_akiko32_r)
+{
+ UINT32 retval;
+
+#if LOG_AKIKO
+ if ( offset < (0x30/4) )
+ {
+ logerror( "Reading AKIKO reg %0x [%s] at PC=%06x\n", offset, get_akiko_reg_name(offset), activecpu_get_pc() );
+ }
+#endif
+
+ switch( offset )
+ {
+ case 0x00/4: /* ID */
+ if ( akiko.cdrom != NULL ) cdda_set_cdrom(0, akiko.cdrom);
+ return 0x0000cafe;
+
+ case 0x04/4: /* CDROM STATUS 1 */
+ return akiko.cdrom_status[0];
+
+ case 0x08/4: /* CDROM STATUS 2 */
+ return akiko.cdrom_status[1];
+
+ case 0x10/4: /* CDROM ADDRESS 1 */
+ return akiko.cdrom_address[0];
+
+ case 0x14/4: /* CDROM ADDRESS 2 */
+ return akiko.cdrom_address[1];
+
+ case 0x18/4: /* CDROM COMMAND 1 */
+ akiko_update_cdrom();
+ retval = akiko.cdrom_cmd_start;
+ retval <<= 8;
+ retval |= akiko.cdrom_cmd_resp;
+ retval <<= 8;
+ return retval;
+
+ case 0x1C/4: /* CDROM COMMAND 2 */
+ akiko_update_cdrom();
+ retval = akiko.cdrom_cmd_end;
+ retval <<= 16;
+ return retval;
+
+ case 0x20/4: /* CDROM DMA SECTOR READ MASK */
+ retval = akiko.cdrom_readmask << 16;
+ return retval;
+
+ case 0x24/4: /* CDROM DMA ENABLE? */
+ retval = akiko.cdrom_dmacontrol;
+ return retval;
+
+ case 0x30/4: /* NVRAM */
+ return akiko_nvram_read();
+
+ case 0x38/4: /* C2P */
+ return akiko_c2p_read();
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+WRITE32_HANDLER(amiga_akiko32_w)
+{
+#if LOG_AKIKO
+ if ( offset < (0x30/4) )
+ {
+ logerror( "Writing AKIKO reg %0x [%s] with %08x at PC=%06x\n", offset, get_akiko_reg_name(offset), data, activecpu_get_pc() );
+ }
+#endif
+
+ switch( offset )
+ {
+ case 0x04/4: /* CDROM STATUS 1 */
+ akiko.cdrom_status[0] = data;
+ break;
+
+ case 0x08/4: /* CDROM STATUS 2 */
+ akiko.cdrom_status[1] = data;
+ akiko.cdrom_status[0] &= data;
+ break;
+
+ case 0x10/4: /* CDROM ADDRESS 1 */
+ akiko.cdrom_address[0] = data;
+ break;
+
+ case 0x14/4: /* CDROM ADDRESS 2 */
+ akiko.cdrom_address[1] = data;
+ break;
+
+ case 0x18/4: /* CDROM COMMAND 1 */
+ if ( ( mem_mask & 0x00ff0000 ) == 0 )
+ akiko.cdrom_cmd_start = ( data >> 16 ) & 0xff;
+
+ if ( ( mem_mask & 0x0000ff00 ) == 0 )
+ akiko.cdrom_cmd_resp = ( data >> 8 ) & 0xff;
+
+ akiko_update_cdrom();
+ break;
+
+ case 0x1C/4: /* CDROM COMMAND 2 */
+ if ( ( mem_mask & 0x00ff0000 ) == 0 )
+ akiko.cdrom_cmd_end = ( data >> 16 ) & 0xff;
+
+ akiko_update_cdrom();
+ break;
+
+ case 0x20/4: /* CDROM DMA SECTOR READ REQUEST WRITE */
+#if LOG_AKIKO_CD
+ logerror( "Read Req mask W: data %08x - mem mask %08x\n", data, mem_mask );
+#endif
+ if ( ( mem_mask & 0xffff0000 ) == 0 )
+ {
+ akiko.cdrom_readreqmask = (data >> 16);
+ akiko.cdrom_readmask = 0;
+ }
+ break;
+
+ case 0x24/4: /* CDROM DMA ENABLE? */
+#if LOG_AKIKO_CD
+ logerror( "DMA enable W: data %08x - mem mask %08x\n", data, mem_mask );
+#endif
+ if ( ( akiko.cdrom_dmacontrol ^ data ) & 0x04000000 )
+ {
+ if ( data & 0x04000000 )
+ akiko_start_dma();
+ }
+ akiko.cdrom_dmacontrol = data;
+ break;
+
+ case 0x30/4:
+ akiko_nvram_write(data);
+ break;
+
+ case 0x38/4:
+ akiko_c2p_write(data);
+ break;
+
+ default:
+ break;
+ }
+}