diff options
Diffstat (limited to 'src/mess/machine/psxcd.c')
-rw-r--r-- | src/mess/machine/psxcd.c | 1234 |
1 files changed, 0 insertions, 1234 deletions
diff --git a/src/mess/machine/psxcd.c b/src/mess/machine/psxcd.c deleted file mode 100644 index 6bcf6f04e6a..00000000000 --- a/src/mess/machine/psxcd.c +++ /dev/null @@ -1,1234 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:smf,R. Belmont,pSXAuthor,Carl -#include "emu.h" -#include "psxcd.h" -#include "debugger.h" - -#define VERBOSE_LEVEL ( 0 ) - -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( "%s: %s", machine.describe_context(), buf ); - } -} - -enum cdrom_events -{ - event_cmd_complete=0, - event_read_sector, - event_play_sector, - event_change_disk -}; - -enum intr_status -{ - intr_nointr=0, - intr_dataready, - intr_acknowledge, - intr_complete, - intr_dataend, - intr_diskerror -}; - -enum mode_flags -{ - mode_double_speed=0x80, - mode_adpcm=0x40, - mode_size=0x20, - mode_size2=0x10, - mode_size_mask=0x30, - mode_channel=0x08, - mode_report=0x04, - mode_autopause=0x02, - mode_cdda=0x01 -}; - -enum status_f -{ - status_playing=0x80, - status_seeking=0x40, - status_reading=0x20, - status_shellopen=0x10, - status_invalid=0x08, - status_seekerror=0x04, - status_standby=0x02, - status_error=0x01 -}; - -struct subheader -{ - UINT8 file, channel, submode, coding; -}; - -enum submode_flags -{ - submode_eof=0x80, - submode_realtime=0x40, - submode_form=0x20, - submode_trigger=0x10, - submode_data=0x08, - submode_audio=0x04, - submode_video=0x02, - submode_eor=0x01 -}; - -//************************************************************************** -// DEVICE DEFINITIONS -//************************************************************************** - -const device_type PSXCD = &device_creator<psxcd_device>; - -psxcd_device::psxcd_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : - cdrom_image_device(mconfig, PSXCD, "PSX Cdrom", tag, owner, clock, "psx_cd", __FILE__), - m_irq_handler(*this) -{ - static_set_interface(*this, "psx_cdrom"); -} - - -void psxcd_device::device_start() -{ - cdrom_image_device::device_start(); - m_irq_handler.resolve_safe(); - - m_maincpu = machine().device<cpu_device>("maincpu"); - m_spu = machine().device<spu_device>("spu"); - - unsigned int sysclk=m_maincpu->clock()/2; - start_read_delay=(sysclk/60); - read_sector_cycles=(sysclk/75); - preread_delay=(read_sector_cycles>>2)-500; - - m_sysclock = sysclk; - - res_queue = NULL; - rdp = 0; - status=status_shellopen; - mode=0; - - for (int i = 0; i < MAX_PSXCD_TIMERS; i++) - { - m_timers[i] = timer_alloc(i); - m_timerinuse[i] = false; - } - - save_item(NAME(cmdbuf)); - save_item(NAME(mode)); - save_item(NAME(secbuf)); - save_item(NAME(filter_file)); - save_item(NAME(filter_channel)); - save_item(NAME(lastsechdr)); - save_item(NAME(status)); - save_item(NAME(rdp)); - save_item(NAME(m_cursec)); - save_item(NAME(sectail)); - save_item(NAME(m_transcurr)); - save_item(NAME(m_transbuf)); - save_item(NAME(loc.w)); - save_item(NAME(curpos.w)); - save_item(NAME(open)); - save_item(NAME(m_mute)); - save_item(NAME(m_dmaload)); - save_item(NAME(next_read_event)); - save_item(NAME(next_sector_t)); - save_item(NAME(autopause_sector)); - save_item(NAME(m_param_count)); -} - -void psxcd_device::device_stop() -{ - for (int i = 0; i < MAX_PSXCD_TIMERS; i++) - { - if(m_timerinuse[i] && m_timers[i]->ptr()) - global_free((command_result *)m_timers[i]->ptr()); - } - while(res_queue) - { - command_result *res = res_queue->next; - global_free(res_queue); - res_queue = res; - } -} - -void psxcd_device::device_reset() -{ - next_read_event = -1; - stop_read(); - - for (int i = 0; i < MAX_PSXCD_TIMERS; i++) - { - if(m_timerinuse[i] && m_timers[i]->ptr()) - global_free((command_result *)m_timers[i]->ptr()); - m_timers[i]->adjust(attotime::never, 0, attotime::never); - m_timerinuse[i] = false; - } - open = true; - if(m_cdrom_handle) - add_system_event(event_change_disk, m_sysclock, NULL); - - while(res_queue) - { - command_result *res = res_queue->next; - global_free(res_queue); - res_queue = res; - } - - m_param_count = 0; - m_regs.sr = 0x18; - m_regs.ir = 0; - m_regs.imr = 0x1f; - sectail = 0; - m_cursec = 0; - m_mute = false; - m_dmaload = false; - m_int1 = NULL; - curpos.w = 0; -} - -bool psxcd_device::call_load() -{ - bool ret = cdrom_image_device::call_load(); - open = true; - if(ret == IMAGE_INIT_PASS) - add_system_event(event_change_disk, m_sysclock, NULL); // 1 sec to spin up the disk - return ret; -} - -void psxcd_device::call_unload() -{ - stop_read(); - cdrom_image_device::call_unload(); - open = true; - status = status_shellopen; - send_result(intr_diskerror); -} - -READ8_MEMBER( psxcd_device::read ) -{ - UINT8 ret = 0; - switch (offset & 3) - { - /* - x--- ---- command/parameter busy flag - -x-- ---- data fifo full (active low) - --x- ---- response fifo empty (active low) - ---x ---- parameter fifo full (active low) - ---- x--- parameter fifo empty (active high) - ---- --xx cmd mode - */ - case 0: - ret = m_regs.sr; - break; - - case 1: - if ((res_queue) && (rdp < res_queue->sz)) - { - ret = res_queue->data[rdp++]; - if(rdp == res_queue->sz) - m_regs.sr &= ~0x20; - else - m_regs.sr |= 0x20; - } - else - ret = 0; - break; - - case 2: - if(!m_dmaload) - ret = 0; - else - { - ret = m_transbuf[m_transcurr++]; - if(m_transcurr >= raw_sector_size) - { - m_dmaload = false; - m_regs.sr &= ~0x40; - } - } - break; - - case 3: - if(m_regs.sr & 1) - ret = m_regs.ir | 0xe0; - else - ret = m_regs.imr | 0xe0; - break; - } - - verboselog(machine(), 2, "psxcd: read byte %08x = %02x\n",offset,ret); - - return ret; -} - -WRITE8_MEMBER( psxcd_device::write ) -{ - verboselog(machine(), 2, "psxcd: write byte %08x = %02x\n",offset,data); - - switch ((offset & 3) | ((m_regs.sr & 3) << 4)) - { - case 0x00: - case 0x10: - case 0x20: - case 0x30: - m_regs.sr = (m_regs.sr & ~3) | (data & 3); - break; - - case 0x01: - write_command(data); - break; - - case 0x11: - case 0x21: - break; - - case 0x31: - m_regs.vol.rr = data; - break; - - case 0x02: - cmdbuf[m_param_count] = data; - m_param_count++; - break; - - case 0x12: - m_regs.imr = data & 0x1f; - break; - - case 0x22: - m_regs.vol.ll = data; - break; - - case 0x32: - m_regs.vol.rl = data; - break; - /* - x--- ---- unknown - -x-- ---- Reset parameter FIFO - --x- ---- unknown (used on transitions, so it certainly resets something) - ---x ---- Command start - ---- -xxx Response received - */ - case 0x03: - if((data & 0x80) && !m_dmaload) - { - m_dmaload = true; - memcpy(m_transbuf, secbuf[m_cursec], raw_sector_size); - m_regs.sr |= 0x40; - - m_cursec++; - m_cursec %= sector_buffer_size; - - switch(mode & mode_size_mask) - { - case 0x00: - default: - m_transcurr = 24; - break; - case 0x10: - m_transcurr = 24; - break; - case 0x20: - m_transcurr = 12; - break; - } -#if (VERBOSE_LEVEL > 0) - char str[1024]; - for (int i=0; i<12; i++) - sprintf(&str[i*4], "%02x ", m_transbuf[i+12]); - verboselog(machine(), 1, "psxcd: request data=%s\n",str); -#endif - } - else if(!(data & 0x80)) - { - m_dmaload = false; - m_regs.sr &= ~0x40; - } - break; - - case 0x13: - if(data & 0x1f) - { - m_regs.ir &= ~(data & 0x1f); - - if(res_queue && !m_regs.ir) - { - command_result *res = res_queue; - if(res == m_int1) - m_int1 = NULL; - - res_queue = res->next; - global_free(res); - m_regs.sr &= ~0x20; - rdp = 0; - if(res_queue) - { - m_regs.sr |= 0x20; - m_regs.ir = res_queue->res; - } - verboselog(machine(), 1, "psxcd: nextres\n"); - } - } - if(data & 0x40) - m_param_count = 0; - break; - - case 0x23: - m_regs.vol.lr = data; - break; - - case 0x33: - break; - } -} - -const psxcd_device::cdcmd psxcd_device::cmd_table[]= -{ - &psxcd_device::cdcmd_sync, - &psxcd_device::cdcmd_nop, - &psxcd_device::cdcmd_setloc, - &psxcd_device::cdcmd_play, - &psxcd_device::cdcmd_forward, - &psxcd_device::cdcmd_backward, - &psxcd_device::cdcmd_readn, - &psxcd_device::cdcmd_standby, - &psxcd_device::cdcmd_stop, - &psxcd_device::cdcmd_pause, - &psxcd_device::cdcmd_init, - &psxcd_device::cdcmd_mute, - &psxcd_device::cdcmd_demute, - &psxcd_device::cdcmd_setfilter, - &psxcd_device::cdcmd_setmode, - &psxcd_device::cdcmd_getparam, - &psxcd_device::cdcmd_getlocl, - &psxcd_device::cdcmd_getlocp, - &psxcd_device::cdcmd_unknown12, - &psxcd_device::cdcmd_gettn, - &psxcd_device::cdcmd_gettd, - &psxcd_device::cdcmd_seekl, - &psxcd_device::cdcmd_seekp, - &psxcd_device::cdcmd_illegal17, - &psxcd_device::cdcmd_illegal18, - &psxcd_device::cdcmd_test, - &psxcd_device::cdcmd_id, - &psxcd_device::cdcmd_reads, - &psxcd_device::cdcmd_reset, - &psxcd_device::cdcmd_illegal1d, - &psxcd_device::cdcmd_readtoc -}; - -void psxcd_device::write_command(UINT8 byte) -{ - if(byte > 31) - illegalcmd(byte); - else - (this->*cmd_table[byte])(); - m_param_count = 0; -} - -void psxcd_device::cdcmd_sync() -{ - verboselog(machine(), 1, "psxcd: sync\n"); - - stop_read(); - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_nop() -{ - verboselog(machine(), 1, "psxcd: nop\n"); - - if (!open) - status &= ~status_shellopen; - - send_result(intr_complete); -} - -void psxcd_device::cdcmd_setloc() -{ - verboselog(machine(), 1, "psxcd: setloc %08x:%08x:%08x\n", cmdbuf[0], cmdbuf[1], cmdbuf[2]); - - stop_read(); - - - CDPOS l; - l.b[M]=bcd_to_decimal(cmdbuf[0]); - l.b[S]=bcd_to_decimal(cmdbuf[1]); - l.b[F]=bcd_to_decimal(cmdbuf[2]); - - if ((l.b[M]>0) || (l.b[S]>=2)) - loc.w=l.w; - else - verboselog(machine(), 0, "psxcd: setloc out of range: %02d:%02d:%02d\n",l.b[M],l.b[S],l.b[F]); - - send_result(intr_complete); -} - -void psxcd_device::cdcmd_play() -{ - if(cmdbuf[0] && m_param_count) - loc.w = lba_to_msf_ps(cdrom_get_track_start(m_cdrom_handle, bcd_to_decimal(cmdbuf[0]) - 1)); - - curpos.w = loc.w; - if (!curpos.w) - curpos.b[S] = 2; - - verboselog(machine(), 1, "psxcd: play %02x %02x %02x => %d\n", decimal_to_bcd(loc.b[M]), decimal_to_bcd(loc.b[S]), decimal_to_bcd(loc.b[F]), msf_to_lba_ps(loc.w)); - - stop_read(); - start_play(); - send_result(intr_complete); -} - -void psxcd_device::cdcmd_forward() -{ - verboselog(machine(), 1, "psxcd: forward\n"); -} - -void psxcd_device::cdcmd_backward() -{ - verboselog(machine(), 1, "psxcd: backward\n"); -} - -void psxcd_device::cdcmd_readn() -{ - if(!open) - { - verboselog(machine(), 1, "psxcd: readn\n"); - - curpos.w=loc.w; - - stop_read(); - start_read(); - } else - { - send_result(intr_diskerror, NULL, 0, 0x80); - } -} - -void psxcd_device::cdcmd_standby() -{ - verboselog(machine(), 1, "psxcd: standby\n"); - - stop_read(); - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_stop() -{ - verboselog(machine(), 1, "psxcd: stop\n"); - - stop_read(); - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_pause() -{ - verboselog(machine(), 1, "psxcd: pause\n"); - - stop_read(); - - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_init() -{ - verboselog(machine(), 1, "psxcd: init\n"); - - stop_read(); - mode=0; - m_regs.sr |= 0x10; - - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_mute() -{ - verboselog(machine(), 1, "psxcd: mute\n"); - - m_mute = true; - send_result(intr_complete); -} - -void psxcd_device::cdcmd_demute() -{ - verboselog(machine(), 1, "psxcd: demute\n"); - - m_mute = false; - send_result(intr_complete); -} - -void psxcd_device::cdcmd_setfilter() -{ - verboselog(machine(), 1, "psxcd: setfilter %08x,%08x\n",cmdbuf[0],cmdbuf[1]); - - filter_file=cmdbuf[0]; - filter_channel=cmdbuf[1]; - - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_setmode() -{ - verboselog(machine(), 1, "psxcd: setmode %08x\n",cmdbuf[0]); - - mode=cmdbuf[0]; - send_result(intr_complete); -} - -void psxcd_device::cdcmd_getparam() -{ - unsigned char data[6]= - { - status, - mode, - filter_file, - filter_channel, - 0, - 0 - }; - - verboselog(machine(), 1, "psxcd: getparam [%02x %02x %02x %02x %02x %02x]\n", - data[0], data[1], data[2], data[3], data[4], data[5]); - - send_result(intr_complete,data,6); -} - -UINT32 psxcd_device::sub_loc(CDPOS src1, CDPOS src2) -{ - CDPOS dst; - int f=src1.b[F]-src2.b[F], - s=src1.b[S]-src2.b[S], - m=src1.b[M]-src2.b[M]; - while (f<0) { s--; f+=75; } - while (s<0) { m--; s+=60; } - - if (m<0) - m=s=f=0; - - dst.b[M]=m; - dst.b[S]=s; - dst.b[F]=f; - - return dst.w; -} - -void psxcd_device::cdcmd_getlocl() -{ - verboselog(machine(), 1, "psxcd: getlocl [%02x %02x %02x %02x %02x %02x %02x %02x]\n", - lastsechdr[0], lastsechdr[1], lastsechdr[2], lastsechdr[3], - lastsechdr[4], lastsechdr[5], lastsechdr[6], lastsechdr[7]); - - send_result(intr_complete,lastsechdr,8); -} - -void psxcd_device::cdcmd_getlocp() -{ - CDPOS tloc, start; - UINT8 track = cdrom_get_track(m_cdrom_handle, msf_to_lba_ps(loc.w)) + 1; - start.w = (track == 1) ? 0x000200 : lba_to_msf_ps(cdrom_get_track_start(m_cdrom_handle, track - 1)); - tloc.w = sub_loc(loc, start); - - unsigned char data[8]= - { - decimal_to_bcd(track), // track - 0x01, // index - decimal_to_bcd(tloc.b[M]), // min - decimal_to_bcd(tloc.b[S]), // sec - decimal_to_bcd(tloc.b[F]), // frame - decimal_to_bcd(loc.b[M]), // amin - decimal_to_bcd(loc.b[S]), // asec - decimal_to_bcd(loc.b[F]) // aframe - }; - - verboselog(machine(), 1, "psxcd: getlocp [%02x %02x %02x %02x %02x %02x %02x %02x]\n", - data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]); - - send_result(intr_complete,data,8); -} - -void psxcd_device::cdcmd_gettn() -{ - verboselog(machine(), 1, "psxcd: gettn\n"); - - - if(!open) - { - unsigned char data[3]= - { - status, - decimal_to_bcd(1), - decimal_to_bcd(cdrom_get_last_track(m_cdrom_handle)) - }; - - send_result(intr_complete,data,3); - } - else - { - send_result(intr_diskerror, NULL, 0, 0x80); - } -} - -void psxcd_device::cdcmd_gettd() -{ - UINT8 track = bcd_to_decimal(cmdbuf[0]); - UINT8 last = cdrom_get_last_track(m_cdrom_handle); - if(track <= last) - { - CDPOS trkstart; - if(!track) // length of disk - trkstart.w = lba_to_msf_ps(cdrom_get_track_start(m_cdrom_handle, 0xaa)); - else - trkstart.w = lba_to_msf_ps(cdrom_get_track_start(m_cdrom_handle, track - 1)); - - unsigned char data[3]= - { - status, - decimal_to_bcd(trkstart.b[M]), - decimal_to_bcd(trkstart.b[S]) - }; - - verboselog(machine(), 1, "psxcd: gettd %02x [%02x %02x %02x]\n", cmdbuf[0], data[0], data[1], data[2]); - - send_result(intr_acknowledge,data,3); - } - else - { - send_result(intr_diskerror, NULL, 0, 0x80); - } -} - -void psxcd_device::cdcmd_seekl() -{ - verboselog(machine(), 1, "psxcd: seekl [%02d:%02d:%02d]\n", loc.b[M], loc.b[S], loc.b[F]); - - curpos.w=loc.w; - - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_seekp() -{ - verboselog(machine(), 1, "psxcd: seekp\n"); - - curpos.w=loc.w; - - send_result(intr_acknowledge); -} - -void psxcd_device::cdcmd_test() -{ - verboselog(machine(), 1, "psxcd: test %02x\n", cmdbuf[0]); - - switch(cmdbuf[0]) - { - case 0x20: - { - static UINT8 data[4]= - { - 0x95, - 0x07, - 0x06, - 0xff - }; - - send_result(intr_complete,data,4); - break; - } - - default: - verboselog(machine(), 0, "psxcd: unimplemented test cmd %02x\n", cmdbuf[0]); - cmd_complete(prepare_result(intr_diskerror, NULL, 0, 0x10)); - break; - } -} - -void psxcd_device::cdcmd_id() -{ - verboselog(machine(), 1, "psxcd: id\n"); - - if (!open) - { - UINT8 cdid[8]; - int irq; - memset(cdid, '\0', 8); - - send_result(intr_complete); - if(cdrom_get_track_type(m_cdrom_handle, 0) == CD_TRACK_AUDIO) - { - irq = intr_diskerror; - cdid[0] = status | status_invalid; - cdid[1] = 0x90; - } - else - { - irq = intr_acknowledge; - cdid[0] = status; - cdid[4] = 'S'; - cdid[5] = 'C'; - cdid[6] = 'E'; - cdid[7] = 'A'; - } - send_result(irq,cdid,8,default_irq_delay*3); - } - else - { - send_result(intr_diskerror, NULL, 0, 0x80); - } -} - -void psxcd_device::cdcmd_reads() -{ - if(!open) - { - verboselog(machine(), 1, "psxcd: reads\n"); - - curpos.w=loc.w; - - stop_read(); - start_read(); - } else - { - send_result(intr_diskerror, NULL, 0, 0x80); - } -} - -void psxcd_device::cdcmd_reset() -{ - verboselog(machine(), 1, "psxcd: reset\n"); -} - -void psxcd_device::cdcmd_readtoc() -{ - verboselog(machine(), 1, "psxcd: readtoc\n"); - - send_result(intr_complete); - send_result(intr_acknowledge, NULL, 0, default_irq_delay*3); // ? -} - -void psxcd_device::cdcmd_unknown12() -{ - verboselog(machine(), 1, "psxcd: unknown 12\n"); - // set session? readt? - if(cmdbuf[0] == 1) - send_result(intr_complete); - else - send_result(intr_diskerror, NULL, 0, 0x40); -} - -void psxcd_device::cdcmd_illegal17() -{ - illegalcmd(0x17); // set clock? -} - -void psxcd_device::cdcmd_illegal18() -{ - illegalcmd(0x18); // get clock? -} - -void psxcd_device::cdcmd_illegal1d() -{ - illegalcmd(0x1d); // read q subchannel -} - -void psxcd_device::illegalcmd(UINT8 cmd) -{ - verboselog(machine(), 0, "psxcd: unimplemented cd command %02x\n", cmd); - - send_result(intr_diskerror, NULL, 0, 0x40); -} - -void psxcd_device::cmd_complete(command_result *res) -{ - command_result *rf; - - verboselog(machine(), 1, "psxcd: irq [%d]\n", res->res); - - if (res_queue) - { - for (rf=res_queue; rf->next; rf=rf->next); - rf->next=res; - } - else - { - res_queue = res; - m_regs.ir = res_queue->res; - if(m_regs.ir & m_regs.imr) - m_irq_handler(1); - m_regs.sr |= 0x20; - } - res->next = NULL; -} - -psxcd_device::command_result *psxcd_device::prepare_result(UINT8 res, UINT8 *data, int sz, UINT8 errcode) -{ - command_result *cr=global_alloc(command_result); - - cr->res=res; - if (sz) - { - assert(sz<sizeof(cr->data)); - memcpy(cr->data,data,sz); - cr->sz=sz; - } else - { - if((res == intr_diskerror) && errcode) - { - cr->data[0] = status | status_error; - cr->data[1] = errcode; - cr->sz = 2; - } - else - { - cr->data[0]=status; - cr->sz=1; - } - } - status &= ~status_error; - - return cr; -} - -void psxcd_device::send_result(UINT8 res, UINT8 *data, int sz, int delay, UINT8 errcode) -{ - // Avoid returning results after sector read results - - // delay the sector read slightly if necessary - - UINT64 systime = m_maincpu->total_cycles(); - if ((next_read_event != -1) && ((systime+delay)>(next_sector_t))) - { - UINT32 hz = m_sysclock / (delay + 2000); - m_timers[next_read_event]->adjust(attotime::from_hz(hz), 0, attotime::never); - } - - add_system_event(event_cmd_complete, delay, prepare_result(res, data, sz, errcode)); -} - -void psxcd_device::start_dma(UINT8 *mainram, UINT32 size) -{ - UINT32 sector_size; - verboselog(machine(), 1, "psxcd: start dma %d bytes at %d\n", size, m_transcurr); - - if(!m_dmaload) - return; - - switch(mode & mode_size_mask) - { - case 0x00: - default: - sector_size = 2048 + 24; - break; - case 0x10: - sector_size = 2328 + 12; - break; - case 0x20: - sector_size = 2340 + 12; - break; - } - - if(size > (sector_size - m_transcurr)) - size = (sector_size - m_transcurr); - - memcpy(mainram, &m_transbuf[m_transcurr], size); - m_transcurr += size; - - if(sector_size <= m_transcurr) - { - m_dmaload = false; - m_regs.sr &= ~0x40; - } -} - -void psxcd_device::read_sector() -{ - next_read_event=-1; - - if (status & status_reading) - { - bool isend = false; - UINT32 sector = msf_to_lba_ps(curpos.w); - UINT8 *buf = secbuf[sectail]; - if (cdrom_read_data(m_cdrom_handle, sector, buf, CD_TRACK_RAW_DONTCARE)) - { - subheader *sub=(subheader *)(buf+16); - memcpy(lastsechdr, buf+12, 8); - - verboselog(machine(), 2, "psxcd: subheader file=%02x chan=%02x submode=%02x coding=%02x [%02x%02x%02x%02x]\n", - sub->file, sub->channel, sub->submode, sub->coding, buf[0xc], buf[0xd], buf[0xe], buf[0xf]); - - if ((mode & mode_adpcm) && (sub->submode & submode_audio)) - { - if ((sub->submode & submode_eof) && (mode & mode_autopause)) - { - isend=true; - //printf("end of file\n"); - } - if((!(mode & mode_channel) || - ((sub->file == filter_file) && (sub->channel == filter_channel))) && !m_mute) - m_spu->play_xa(0,buf+16); - } - else - { - if(!m_int1) - m_cursec = sectail; - - m_int1 = prepare_result(intr_dataready); - cmd_complete(m_int1); - sectail++; - sectail %= sector_buffer_size; - } - - curpos.b[F]++; - if (curpos.b[F]==75) - { - curpos.b[F]=0; - curpos.b[S]++; - if (curpos.b[S]==60) - { - curpos.b[S]=0; - curpos.b[M]++; - } - } - - loc.w=curpos.w; - } - else - isend = true; - - if (! isend) - { - unsigned int cyc=read_sector_cycles; - if (mode&mode_double_speed) cyc>>=1; - - next_sector_t+=cyc; - - next_read_event = add_system_event(event_read_sector, cyc, NULL); - } else - { - verboselog(machine(), 1, "psxcd: autopause xa\n"); - - cmd_complete(prepare_result(intr_dataend)); - stop_read(); - } - } -} - -void psxcd_device::play_sector() -{ - next_read_event=-1; - - if (status&status_playing) - { - UINT32 sector = msf_to_lba_ps(curpos.w); - - if(cdrom_read_data(m_cdrom_handle, sector, secbuf[sectail], CD_TRACK_AUDIO)) - { - if(!m_mute) - m_spu->play_cdda(0, secbuf[sectail]); - } - else - { - if(!cdrom_read_data(m_cdrom_handle, sector, secbuf[sectail], CD_TRACK_RAW_DONTCARE)) - { - stop_read(); // assume we've reached the end - cmd_complete(prepare_result(intr_dataend)); - return; - } - } - - curpos.b[F]++; - if (curpos.b[F]==75) - { - curpos.b[F]=0; - curpos.b[S]++; - if (curpos.b[S]==60) - { - curpos.b[S]=0; - curpos.b[M]++; - } - } - - loc.w=curpos.w; - sector++; - sectail++; - sectail %= sector_buffer_size; - - if (mode&mode_autopause) - { - if (sector>=autopause_sector) - { - verboselog(machine(), 1, "psxcd: autopause cdda\n"); - - stop_read(); - cmd_complete(prepare_result(intr_dataend)); - return; - } - } - - if ((mode&mode_report) && !(sector & 15)) // slow the int rate - { - command_result *res=global_alloc(command_result); - UINT8 track = cdrom_get_track(m_cdrom_handle, sector) + 1; - res->res=intr_dataready; - - res->data[0]=status; - res->data[1]=decimal_to_bcd(track); - res->data[2]=1; - if(sector & 0x10) - { - CDPOS tloc, start; - start.w = (track == 1) ? 0x000200 : lba_to_msf_ps(cdrom_get_track_start(m_cdrom_handle, track - 1)); - tloc.w = sub_loc(loc, start); - res->data[3]=decimal_to_bcd(tloc.b[M]); - res->data[4]=decimal_to_bcd(tloc.b[S]) | 0x80; - res->data[5]=decimal_to_bcd(tloc.b[F]); - } - else - { - res->data[3]=decimal_to_bcd(loc.b[M]); - res->data[4]=decimal_to_bcd(loc.b[S]); - res->data[5]=decimal_to_bcd(loc.b[F]); - } - - res->sz=8; - - cmd_complete(res); - } - - unsigned int cyc=read_sector_cycles; - - next_sector_t+=cyc>>1; - - next_read_event = add_system_event(event_play_sector, next_sector_t - m_maincpu->total_cycles(), NULL); - } -} - -void psxcd_device::start_read() -{ - UINT32 sector = msf_to_lba_ps(curpos.w); - - assert((status&(status_reading|status_playing))==0); - - if(!(mode & mode_cdda) && (cdrom_get_track_type(m_cdrom_handle, cdrom_get_track(m_cdrom_handle, sector + 150)) == CD_TRACK_AUDIO)) - { - stop_read(); - cmd_complete(prepare_result(intr_diskerror, NULL, 0, 0x40)); - return; - } - send_result(intr_complete); - status |= status_reading; - - m_cursec=sectail=0; - - unsigned int cyc=read_sector_cycles; - if (mode&mode_double_speed) cyc>>=1; - - INT64 systime=m_maincpu->total_cycles(); - - systime+=start_read_delay; - - next_sector_t=systime+cyc; - next_read_event = add_system_event(event_read_sector, start_read_delay+preread_delay, NULL); -} - -void psxcd_device::start_play() -{ - UINT8 track = cdrom_get_track(m_cdrom_handle, msf_to_lba_ps(curpos.w) + 150); - - if(cdrom_get_track_type(m_cdrom_handle, track) != CD_TRACK_AUDIO) - verboselog(machine(), 0, "psxcd: playing data track\n"); - - status|=status_playing; - - m_cursec=sectail=0; - - if (mode&mode_autopause) - { - autopause_sector = cdrom_get_track_start(m_cdrom_handle, track) + cdrom_get_toc(m_cdrom_handle)->tracks[track].frames; -// printf("pos=%d auto=%d\n",pos,autopause_sector); - } - - unsigned int cyc=read_sector_cycles; - - next_sector_t=m_maincpu->total_cycles()+cyc; - - next_sector_t+=cyc>>1; - - next_read_event = add_system_event(event_play_sector, next_sector_t - m_maincpu->total_cycles(), NULL); -} - -void psxcd_device::stop_read() -{ - if (status & (status_reading|status_playing)) - verboselog(machine(), 1, "psxcd: stop read\n"); - - status&=~(status_reading|status_playing); - - if (next_read_event != -1) - { - m_timers[next_read_event]->adjust(attotime::never, 0, attotime::never); - m_timerinuse[next_read_event] = false; - next_read_event = -1; - } - - UINT32 sector=msf_to_lba_ps(curpos.w); - m_spu->flush_xa(sector); - m_spu->flush_cdda(sector); -} - -void psxcd_device::device_timer(emu_timer &timer, device_timer_id tid, int param, void *ptr) -{ - if (!m_timerinuse[tid]) - { - verboselog(machine(), 0, "psxcd: timer fired for free event\n"); - return; - } - - m_timerinuse[tid] = false; - switch (param) - { - case event_cmd_complete: - { - verboselog(machine(), 1, "psxcd: event cmd complete\n"); - - cmd_complete((command_result *)ptr); - break; - } - - case event_read_sector: - read_sector(); - break; - - case event_play_sector: - play_sector(); - break; - - case event_change_disk: - open = false; - status |= status_standby; - break; - } -} - -int psxcd_device::add_system_event(int type, UINT64 t, command_result *ptr) -{ - // t is in maincpu clock cycles - UINT32 hz = m_sysclock / t; - for(int i = 0; i < MAX_PSXCD_TIMERS; i++) - { - if(!m_timerinuse[i]) - { - m_timers[i]->adjust(attotime::from_hz(hz), type, attotime::never); - m_timers[i]->set_ptr(ptr); - m_timerinuse[i] = true; - return i; - } - } - fatalerror("psxcd: out of timers\n"); -} |