| version 1.1, 2004/08/01 05:31:30 | version 1.10, 2004/08/13 03:47:23 | 
| Line 2 | Line 2 | 
 | #include        "z80core.h" | #include        "z80core.h" | 
 | #include        "pccore.h" | #include        "pccore.h" | 
 | #include        "iocore.h" | #include        "iocore.h" | 
 |  | #include        "nevent.h" | 
 |  | #include        "ievent.h" | 
 |  |  | 
 |  |  | 
| void x1_ctc_int(void) { | static SINT32 minclock(const CTCCH *ch) { | 
 |  |  | 
| CTCCH   *ch; | UINT32  event; | 
| UINT    r; |  | 
| SINT32  clk0; |  | 
| SINT32  clk4; |  | 
| SINT32  clk2; |  | 
| SINT32  subcnt; |  | 
 | UINT    i; | UINT    i; | 
| REG8    bit; | UINT32  clock; | 
| REG8    ctcint_flg; |  | 
|  | event = 0x01000000; | 
|  | for (i=0; i<3; i++) { | 
|  | if ((ch->cmd[i] & 0x82) == 0x80) { | 
|  | clock = ch->count[i]; | 
|  | if (ch->cmd[i] & 0x40) { | 
|  | clock = clock * 2; | 
|  | } | 
|  | event = min(event, clock); | 
|  | } | 
|  | } | 
|  | if ((ch->cmd[3] & 0x82) == 0x80) { | 
|  | clock = ch->count[3]; | 
|  | if (ch->cmd[3] & 0x40) { | 
|  | clock = (clock - 1) * ch->countmax[0]; | 
|  | clock += ch->count[0]; | 
|  | if (ch->cmd[0] & 0x40) { | 
|  | clock = clock * 2; | 
|  | } | 
|  | } | 
|  | event = min(event, clock); | 
|  | } | 
|  | event = event / 2; | 
|  | if (event == 0) { | 
|  | event = 1; | 
|  | } | 
|  | return(event); | 
|  | } | 
 |  |  | 
| ctcint_flg = Z80_ABLEINTERRUPT(); | static REG8 ctcwork(CTCCH *ch) { | 
 |  |  | 
| clk4 = pccore.HSYNC_CLK; | UINT32  baseclock; | 
| clk2 = clk4 >> 1; | SINT32  stepclock; | 
|  | REG8    intr; | 
|  | SINT32  pulse3; | 
|  | SINT32  pulse; | 
|  | SINT32  count; | 
 |  |  | 
| if (pccore.ROM_TYPE >= 2) { | baseclock = CPU_CLOCK + CPU_BASECLOCK - CPU_REMCLOCK; | 
| ch = ctc.ch + 0; | stepclock = baseclock - ch->baseclock; | 
| r = 3; | stepclock /= pccore.multiple; | 
|  | ch->baseclock += stepclock * pccore.multiple; | 
|  |  | 
|  | intr = 0; | 
|  | pulse3 = 0; | 
|  |  | 
|  | // 0 | 
|  | if (!(ch->cmd[0] & 0x02)) { | 
|  | pulse = stepclock;                                      // 2MHz | 
|  | if (!(ch->cmd[0] & 0x40)) { | 
|  | pulse = pulse * 2;                              // 4MHz | 
|  | } | 
|  | count = ch->count[0]; | 
|  | count -= pulse; | 
|  | if (count <= 0) { | 
|  | pulse3 = (0 - count) / ch->countmax[0]; | 
|  | pulse3 += 1; | 
|  | count += pulse3 * ch->countmax[0]; | 
|  | intr |= (ch->cmd[0] & 0x80) >> (7 - 0); | 
|  | } | 
|  | ch->count[0] = count; | 
 | } | } | 
| else { |  | 
| ch = ctc.ch + 2; | // 3 | 
| r = 1; | if (!(ch->cmd[3] & 0x02)) { | 
|  | if (!(ch->cmd[3] & 0x40)) { | 
|  | pulse3 = stepclock * 2;                         // 4MHz | 
|  | } | 
|  | count = ch->count[3]; | 
|  | count -= pulse3; | 
|  | if (count <= 0) { | 
|  | count = ch->countmax[3] - ((0 - count) % ch->countmax[3]); | 
|  | intr |= (ch->cmd[3] & 0x80) >> (7 - 3); | 
|  | } | 
|  | ch->count[3] = count; | 
 | } | } | 
 |  |  | 
| do { | // 1 | 
| clk0 = 0; | if (!(ch->cmd[1] & 0x02)) { | 
| bit = 1; | pulse = stepclock;                                      // 2MHz | 
| for (i=0; i<4; i++) { | if (!(ch->cmd[1] & 0x40)) { | 
| if (!(ch->cmd[i] & 0x02)) { | pulse = pulse * 2;                              // 4MHz | 
| if (ch->count[i] <= 0) { | } | 
| ch->count[i] += ch->countmax[i]; | count = ch->count[1]; | 
| } | count -= pulse; | 
| if (!(ch->cmd[i] & 0x40)) { | if (count <= 0) { | 
| subcnt = clk4; | count = ch->countmax[1] - ((0 - count) % ch->countmax[1]); | 
| } | intr |= (ch->cmd[1] & 0x80) >> (7 - 1); | 
| else if (i == 3) { | } | 
| subcnt = clk0; | ch->count[1] = count; | 
| } | } | 
| else { |  | 
| subcnt = clk2; | // 2 | 
| } | if (!(ch->cmd[2] & 0x02)) { | 
| ch->count[i] -= subcnt; | pulse = stepclock;                                      // 2MHz | 
| if (ch->count[i] <= 0) { | if (!(ch->cmd[2] & 0x40)) { | 
| ch->int_flag |= bit; | pulse = pulse * 2;                              // 4MHz | 
| if (!i) { |  | 
| clk0 = 1; |  | 
| } |  | 
| } |  | 
| } |  | 
| bit <<= 1; |  | 
 | } | } | 
 |  | count = ch->count[2]; | 
 |  | count -= pulse; | 
 |  | if (count <= 0) { | 
 |  | count = ch->countmax[2] - ((0 - count) % ch->countmax[2]); | 
 |  | intr |= (ch->cmd[2] & 0x80) >> (7 - 2); | 
 |  | } | 
 |  | ch->count[2] = count; | 
 |  | } | 
 |  | return(intr); | 
 |  | } | 
 |  |  | 
 |  | static void ctcstep(CTCCH *ch) { | 
 |  |  | 
 |  | REG8    intr; | 
 |  |  | 
 |  | intr = ctcwork(ch); | 
 |  | if (intr) { | 
 |  | ch->intr |= intr; | 
 |  | ievent_set(IEVENT_CTC0 + ch->num); | 
 |  | } | 
 |  | } | 
 |  |  | 
 |  | static void ctcnextevent(CTCCH *ch) { | 
 |  |  | 
| bit = 1; | UINT32  event; | 
| for (i=0; i<4; i++) { |  | 
| if (ch->int_flag & bit) { | if (ch->intr) { | 
|  | return; | 
|  | } | 
|  | event = minclock(ch) * pccore.multiple; | 
|  | nevent_set(NEVENT_CTC0 + ch->num, event, neitem_ctc, NEVENT_ABSOLUTE); | 
|  | } | 
|  |  | 
|  | void neitem_ctc(UINT id) { | 
|  |  | 
|  | CTCCH   *ch; | 
|  | REG8    intr; | 
|  |  | 
|  | ch = ctc.ch + (id - NEVENT_CTC0); | 
|  | intr = ctcwork(ch); | 
|  | if (intr) { | 
|  | ch->intr |= intr; | 
|  | ievent_set(IEVENT_CTC0 + ch->num); | 
|  | } | 
|  | else { | 
|  | ctcnextevent(ch); | 
|  | } | 
|  | } | 
|  |  | 
|  | BRESULT ieitem_ctc(UINT id) { | 
|  |  | 
|  | CTCCH   *ch; | 
|  | REG8    intr; | 
|  | BRESULT r; | 
|  | UINT    i; | 
|  | REG8    bit; | 
|  |  | 
|  | ch = ctc.ch + (id - IEVENT_CTC0); | 
|  | intr = ctcwork(ch); | 
|  | intr |= ch->intr; | 
|  | r = FALSE; | 
|  | if (intr) { | 
|  | for (i=0, bit=1; i<4; i++, bit<<=1) { | 
|  | if (intr & bit) { | 
 | if (!(ch->cmd[i] & 0x80)) { | if (!(ch->cmd[i] & 0x80)) { | 
| ch->int_flag ^= bit; | intr ^= bit; | 
 | } | } | 
| else if (ctcint_flg) { | #if 0                   // アークスのタイミング→あとで修正 | 
| ctcint_flg = 0; | else if (0) | 
| ch->int_flag ^= bit; | #elif 1 | 
| Z80_INT((REG8)(ch->vector + (i << 1))); | else if (((ch->cmd[i] & 0x10) == 0) && | 
|  | ((ch->countmax[i] - ch->count[i]) >= 256)) | 
|  | #elif 0 | 
|  | else if (((ch->count[i] * 17) >> 4) < ch->countmax[i]) | 
|  | #else | 
|  | else if (ch->count[i] != ch->countmax[i]) | 
|  | #endif | 
|  | { | 
|  | intr ^= bit; | 
|  | } | 
|  | else if (!r) { | 
|  | r = TRUE; | 
|  | intr ^= bit; | 
|  | //                                      TRACEOUT(("ctc int %d %d", ch->num, i)); | 
|  | Z80_INTERRUPT((REG8)(ch->vector + (i << 1))); | 
 | } | } | 
 | } | } | 
 | bit <<= 1; |  | 
 | } | } | 
| ch++; | } | 
| } while(--r); | ch->intr = intr; | 
|  | if (intr) { | 
|  | ievent_set(IEVENT_CTC0 + ch->num); | 
|  | } | 
|  | else { | 
|  | ctcnextevent(ch); | 
|  | } | 
|  | return(r); | 
 | } | } | 
 |  |  | 
 |  |  | 
| Line 81  void x1_ctc_int(void) { | Line 213  void x1_ctc_int(void) { | 
 |  |  | 
 | static void ctcch_o(CTCCH *ch, UINT port, REG8 value) { | static void ctcch_o(CTCCH *ch, UINT port, REG8 value) { | 
 |  |  | 
 | REG8    scale; |  | 
 | SINT32  count; | SINT32  count; | 
 |  | REG8    scale; | 
 |  |  | 
 | port &= 3; | port &= 3; | 
 | if (ch->cmd[port] & 0x04) { | if (ch->cmd[port] & 0x04) { | 
| scale = 0; | ctcstep(ch); | 
| count = 256; |  | 
 | ch->basecnt[port] = value; | ch->basecnt[port] = value; | 
 |  | count = 256; | 
 | if (value) { | if (value) { | 
 | count = (SINT32)value; | count = (SINT32)value; | 
 | } | } | 
 |  | scale = 0; | 
 | if (!(ch->cmd[port] & 0x40)) { | if (!(ch->cmd[port] & 0x40)) { | 
 | if (ch->cmd[port] & 0x20) { | if (ch->cmd[port] & 0x20) { | 
 | scale = 8; | scale = 8; | 
| Line 101  static void ctcch_o(CTCCH *ch, UINT port | Line 234  static void ctcch_o(CTCCH *ch, UINT port | 
 | } | } | 
 | } | } | 
 | count <<= scale; | count <<= scale; | 
 |  | ch->scale[port] = scale; | 
 | ch->countmax[port] = count; | ch->countmax[port] = count; | 
 | ch->count[port] = count; | ch->count[port] = count; | 
 | ch->cmd[port] &= ~6; | ch->cmd[port] &= ~6; | 
 |  | ctcnextevent(ch); | 
 | } | } | 
 | else if (value & 1) { | else if (value & 1) { | 
 |  | ctcstep(ch); | 
 | ch->cmd[port] = value; | ch->cmd[port] = value; | 
 |  | ctcnextevent(ch); | 
 | } | } | 
 | else if (!port) {                                                                                               // ver0.25 | else if (!port) {                                                                                               // ver0.25 | 
 | ch->vector = (UINT8)(value & 0xf8); | ch->vector = (UINT8)(value & 0xf8); | 
| Line 115  static void ctcch_o(CTCCH *ch, UINT port | Line 252  static void ctcch_o(CTCCH *ch, UINT port | 
 |  |  | 
 | static REG8 ctcch_i(CTCCH *ch, UINT port) { | static REG8 ctcch_i(CTCCH *ch, UINT port) { | 
 |  |  | 
 | UINT    scale; |  | 
 |  |  | 
 | port &= 3; | port &= 3; | 
 | if (port != 3) { | if (port != 3) { | 
 | return(ch->basecnt[port]); | return(ch->basecnt[port]); | 
 | } | } | 
 | else { | else { | 
| scale = 0; | ctcstep(ch); | 
| if (!(ch->cmd[3] & 0x40)) { | return((REG8)(ch->count[3] >> ch->scale[3])); | 
| if (ch->cmd[3] & 0x20) { |  | 
| scale = 8; |  | 
| } |  | 
| else { |  | 
| scale = 4; |  | 
| } |  | 
| } |  | 
| return((REG8)(ch->count[3] >> scale)); |  | 
 | } | } | 
 | } | } | 
 |  |  | 
| Line 147  static CTCCH *getctcch(UINT port) { | Line 274  static CTCCH *getctcch(UINT port) { | 
 | if (port == 0x1fa8) { | if (port == 0x1fa8) { | 
 | return(ctc.ch + 1); | return(ctc.ch + 1); | 
 | } | } | 
| if ((pccore.SOUND_SW) && (port == 0x0704)) { | if (port == 0x0704) { | 
 | return(ctc.ch + 2); | return(ctc.ch + 2); | 
 | } | } | 
 | return(NULL); | return(NULL); | 
| Line 157  void IOOUTCALL ctc_o(UINT port, REG8 val | Line 284  void IOOUTCALL ctc_o(UINT port, REG8 val | 
 |  |  | 
 | CTCCH   *ch; | CTCCH   *ch; | 
 |  |  | 
 |  | TRACEOUT(("ctc - %.4x %.2x [%.4x]", port, value, Z80_PC)); | 
 | ch = getctcch(port); | ch = getctcch(port); | 
 | if (ch != NULL) { | if (ch != NULL) { | 
 | ctcch_o(ch, port, value); | ctcch_o(ch, port, value); | 
| Line 172  REG8 IOINPCALL ctc_i(UINT port) { | Line 300  REG8 IOINPCALL ctc_i(UINT port) { | 
 | return(ctcch_i(ch, port)); | return(ctcch_i(ch, port)); | 
 | } | } | 
 | else { | else { | 
| return((REG8)0xff); | return(0xff); | 
 | } | } | 
 | } | } | 
 |  |  | 
| Line 181  REG8 IOINPCALL ctc_i(UINT port) { | Line 309  REG8 IOINPCALL ctc_i(UINT port) { | 
 |  |  | 
 | void ctc_reset(void) { | void ctc_reset(void) { | 
 |  |  | 
| UINT    i, j; | UINT    i; | 
|  | UINT    j; | 
 |  |  | 
 | ZeroMemory(&ctc, sizeof(ctc)); | ZeroMemory(&ctc, sizeof(ctc)); | 
 | for (i=0; i<3; i++) { | for (i=0; i<3; i++) { | 
 |  | ctc.ch[i].num = (UINT8)i; | 
 | for (j=0; j<4; j++) { | for (j=0; j<4; j++) { | 
| ctc.ch[i].cmd[j] = 0x83; | ctc.ch[i].cmd[j] = 0x03; | 
|  | ctc.ch[i].scale[j] = 8; | 
|  | ctc.ch[i].count[j] = 256 << 8; | 
|  | ctc.ch[i].countmax[j] = 256 << 8; | 
 | } | } | 
 | } | } | 
 | } | } |