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| version 1.5, 2003/11/12 20:02:54 | version 1.11, 2003/12/11 21:57:38 |
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| Line 3 | Line 3 |
| // | // |
| #include "compiler.h" | #include "compiler.h" |
| #include "i286.h" | |
| #include "pccore.h" | #include "pccore.h" |
| #include "iocore.h" | #include "iocore.h" |
| #include "sound.h" | #include "sound.h" |
| #include "beep.h" | #include "beep.h" |
| // #define uPD71054 // NP2はuPD8253Cベース | // #define uPD71054 // NP2はuPD8253Cベース |
| #define BEEPCOUNTEREX // BEEPアイドル時のカウンタをα倍に | |
| // --- Interval timer | // --- Interval timer |
| Line 45 static void setsystimerevent(BOOL absolu | Line 45 static void setsystimerevent(BOOL absolu |
| void systimer(NEVENTITEM item) { | void systimer(NEVENTITEM item) { |
| if (item->flag & NEVENT_SETEVENT) { | if (item->flag & NEVENT_SETEVENT) { |
| if (pit.intr[0]) { | |
| pit.intr[0] = 0; | |
| pic_setirq(0); | |
| } | |
| if ((pit.mode[0] & 0x0c) == 0x04) { | if ((pit.mode[0] & 0x0c) == 0x04) { |
| // レートジェネレータ | // レートジェネレータ |
| pit.intr[0] = 1; | |
| setsystimerevent(NEVENT_RELATIVE); | setsystimerevent(NEVENT_RELATIVE); |
| TRACEOUT(("intr-next")); | |
| } | } |
| else { | else { |
| setsystimerevent_noint(NEVENT_RELATIVE); | nevent_set(NEVENT_ITIMER, pc.multiple << 16, |
| systimer, NEVENT_RELATIVE); | |
| } | } |
| } | } |
| pic_setirq(0); | |
| } | } |
| // --- Beep | // --- Beep |
| #if defined(BEEPCOUNTEREX) | |
| static void setbeepeventex(BOOL absolute) { | |
| UINT32 cnt; | |
| cnt = pit.value[1]; | |
| if (cnt > 2) { | |
| cnt *= pc.multiple; | |
| } | |
| else { | |
| cnt = pc.multiple << 16; | |
| } | |
| while(cnt < 0x100000) { | |
| cnt <<= 1; | |
| } | |
| nevent_set(NEVENT_BEEP, (SINT32)cnt, beeponeshot, absolute); | |
| } | |
| #endif | |
| static void setbeepevent(BOOL absolute) { | static void setbeepevent(BOOL absolute) { |
| SINT32 cnt; | SINT32 cnt; |
| Line 85 void beeponeshot(NEVENTITEM item) { | Line 110 void beeponeshot(NEVENTITEM item) { |
| if (pit.mode[1] & 0x02) | if (pit.mode[1] & 0x02) |
| #endif | #endif |
| { | { |
| #if defined(BEEPCOUNTEREX) | |
| setbeepeventex(NEVENT_RELATIVE); | |
| #else | |
| setbeepevent(NEVENT_RELATIVE); | setbeepevent(NEVENT_RELATIVE); |
| #endif | |
| } | } |
| } | } |
| } | } |
| Line 117 void rs232ctimer(NEVENTITEM item) { | Line 146 void rs232ctimer(NEVENTITEM item) { |
| rs232c_callback(); | rs232c_callback(); |
| } | } |
| // --------------------------------------------------------------------------- | // --------------------------------------------------------------------------- |
| static UINT16 itimer_latch(int ch) { | static UINT pit_latch(int ch) { |
| SINT32 clock; | SINT32 clock; |
| Line 130 static UINT16 itimer_latch(int ch) { | Line 160 static UINT16 itimer_latch(int ch) { |
| return(pit.value[1]); | return(pit.value[1]); |
| #ifdef uPD71054 | #ifdef uPD71054 |
| case 0x06: | case 0x06: |
| return(pit.value[1] & 0xfffe); | return(pit.value[1] & (~1)); |
| #endif | #endif |
| } | } |
| #if defined(BEEPCOUNTEREX) | |
| clock = nevent_getremain(NEVENT_ITIMER + ch); | |
| if (clock < 0) { | |
| return(0); | |
| } | |
| clock /= pc.multiple; | |
| if (pit.value[1] > 2) { | |
| clock %= pit.value[1]; | |
| } | |
| else { | |
| clock >>= 16; | |
| } | |
| return(clock); | |
| #endif | |
| } | } |
| clock = nevent_getremain(NEVENT_ITIMER + ch); | clock = nevent_getremain(NEVENT_ITIMER + ch); |
| if (clock >= 0) { | if (clock >= 0) { |
| return((UINT16)(clock / pc.multiple)); | return(clock / pc.multiple); |
| } | } |
| return(0); | return(0); |
| } | } |
| void pit_setflag(int ch, REG8 value) { | |
| void itimer_setflag(int ch, BYTE value) { | |
| pit.flag[ch] = 0; | pit.flag[ch] = 0; |
| if (value & 0x30) { | if (value & 0x30) { |
| pit.mode[ch] = value; | pit.mode[ch] = (UINT8)value; |
| } | } |
| else { // latch | else { // latch |
| pit.mode[ch] &= ~0x30; | pit.mode[ch] &= ~0x30; |
| pit.latch[ch] = itimer_latch(ch); | pit.latch[ch] = (UINT16)pit_latch(ch); |
| } | } |
| } | } |
| BOOL itimer_setcount(int ch, BYTE value) { | BOOL pit_setcount(int ch, REG8 value) { |
| switch(pit.mode[ch] & 0x30) { | switch(pit.mode[ch] & 0x30) { |
| case 0x10: // access low | case 0x10: // access low |
| Line 180 BOOL itimer_setcount(int ch, BYTE value) | Line 223 BOOL itimer_setcount(int ch, BYTE value) |
| return(FALSE); | return(FALSE); |
| } | } |
| BYTE itimer_getcount(int ch) { | REG8 pit_getcount(int ch) { |
| BYTE ret; | REG8 ret; |
| UINT16 w; | REG16 w; |
| if (!(pit.mode[ch] & 0x30)) { | if (!(pit.mode[ch] & 0x30)) { |
| w = pit.latch[ch]; | w = pit.latch[ch]; |
| } | } |
| else { | else { |
| w = itimer_latch(ch); | w = pit_latch(ch); |
| } | } |
| switch(pit.mode[ch] & 0x30) { | switch(pit.mode[ch] & 0x30) { |
| case 0x10: // access low | case 0x10: // access low |
| return((BYTE)w); | return((UINT8)w); |
| case 0x20: // access high | case 0x20: // access high |
| return((BYTE)(w >> 8)); | return((UINT8)(w >> 8)); |
| } | } |
| // access word | if (!(pit.flag[ch] & 1)) { // access word |
| if (!(pit.flag[ch] & 1)) { | ret = (UINT8)w; |
| ret = (BYTE)w; | |
| } | } |
| else { | else { |
| ret = (BYTE)(w >> 8); | ret = (UINT8)(w >> 8); |
| } | } |
| pit.flag[ch] ^= 1; | pit.flag[ch] ^= 1; |
| return(ret); | return(ret); |
| Line 213 BYTE itimer_getcount(int ch) { | Line 255 BYTE itimer_getcount(int ch) { |
| // ---- I/O | // ---- I/O |
| // system timer | // system timer |
| static void IOOUTCALL pit_o71(UINT port, BYTE dat) { | static void IOOUTCALL pit_o71(UINT port, REG8 dat) { |
| // TRACEOUT(("pic71: %d", dat)); | // TRACEOUT(("pic o71: %x", dat)); |
| if (itimer_setcount(0, dat)) { | if (pit_setcount(0, dat)) { |
| return; | return; |
| } | } |
| pic.pi[0].irr &= (~1); | pic.pi[0].irr &= (~1); |
| pit.intr[0] = 1; | |
| setsystimerevent(NEVENT_ABSOLUTE); | setsystimerevent(NEVENT_ABSOLUTE); |
| (void)port; | (void)port; |
| } | } |
| // beep | // beep |
| static void IOOUTCALL pit_o73(UINT port, BYTE dat) { | static void IOOUTCALL pit_o73(UINT port, REG8 dat) { |
| if (itimer_setcount(1, dat)) { | if (pit_setcount(1, dat)) { |
| return; | return; |
| } | } |
| setbeepevent(NEVENT_ABSOLUTE); | setbeepevent(NEVENT_ABSOLUTE); |
| Line 241 static void IOOUTCALL pit_o73(UINT port, | Line 284 static void IOOUTCALL pit_o73(UINT port, |
| } | } |
| // rs-232c | // rs-232c |
| static void IOOUTCALL pit_o75(UINT port, BYTE dat) { | static void IOOUTCALL pit_o75(UINT port, REG8 dat) { |
| if (itimer_setcount(2, dat)) { | if (pit_setcount(2, dat)) { |
| return; | return; |
| } | } |
| rs232c_open(); | rs232c_open(); |
| Line 252 static void IOOUTCALL pit_o75(UINT port, | Line 295 static void IOOUTCALL pit_o75(UINT port, |
| } | } |
| // ctrl | // ctrl |
| static void IOOUTCALL pit_o77(UINT port, BYTE dat) { | static void IOOUTCALL pit_o77(UINT port, REG8 dat) { |
| int ch; | int ch; |
| // TRACEOUT(("pic77: %x", dat)); | // TRACEOUT(("pic o77: %x", dat)); |
| ch = (dat >> 6) & 3; | ch = (dat >> 6) & 3; |
| if (ch != 3) { | if (ch != 3) { |
| itimer_setflag(ch, dat); | pit_setflag(ch, dat); |
| if (ch == 0) { // 書込みで itimerのirrがリセットされる… | if (ch == 0) { // 書込みで itimerのirrがリセットされる… |
| pic.pi[0].irr &= (~1); | pic.pi[0].irr &= (~1); |
| if (dat & 0x30) { // 一応ラッチ時は割り込みをセットしない | if (dat & 0x30) { // 一応ラッチ時は割り込みをセットしない |
| setsystimerevent(NEVENT_ABSOLUTE); | pit.intr[0] = 1; |
| // setsystimerevent(NEVENT_ABSOLUTE); | |
| } | } |
| } | } |
| if (ch == 1) { | if (ch == 1) { |
| Line 273 static void IOOUTCALL pit_o77(UINT port, | Line 317 static void IOOUTCALL pit_o77(UINT port, |
| (void)port; | (void)port; |
| } | } |
| static BYTE IOINPCALL pit_i71(UINT port) { | static REG8 IOINPCALL pit_i71(UINT port) { |
| return(itimer_getcount((port >> 1) & 3)); | return(pit_getcount((port >> 1) & 3)); |
| } | } |
| Line 296 void itimer_reset(void) { | Line 340 void itimer_reset(void) { |
| else { | else { |
| pit.value[1] = 1229; // 5MHz | pit.value[1] = 1229; // 5MHz |
| } | } |
| pit.intr[0] = 1; | |
| pit.mode[0] = 0x30; | pit.mode[0] = 0x30; |
| pit.mode[1] = 0x56; | pit.mode[1] = 0x56; |
| pit.mode[2] = 0xb6; | pit.mode[2] = 0xb6; |