np2/io/pit.c - diff

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Diff for /np2/io/pit.c between versions 1.4 and 1.9

version 1.4, 2003/10/25 21:03:43	version 1.9, 2003/12/01 17:13:36
Line 10	Line 10
#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 32 static void setsystimerevent(BOOL absolu	Line 33 static void setsystimerevent(BOOL absolu

SINT32 cnt;	SINT32 cnt;

cnt = pit.value[0].w;	cnt = pit.value[0];
if (cnt > 8) { // 根拠なし	if (cnt > 8) { // 根拠なし
cnt *= pc.multiple;	cnt *= pc.multiple;
}	}
Line 45 static void setsystimerevent(BOOL absolu	Line 46 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);
}	}
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;

cnt = pit.value[1].w;	cnt = pit.value[1];
if (cnt > 2) {	if (cnt > 2) {
cnt *= pc.multiple;	cnt *= pc.multiple;
}	}
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 97 static void setrs232cevent(BOOL absolute	Line 126 static void setrs232cevent(BOOL absolute

SINT32 cnt;	SINT32 cnt;

if (pit.value[2].w > 1) {	if (pit.value[2] > 1) {
cnt = pc.multiple * pit.value[2].w * rs232c.mul; // ver0.29	cnt = pc.multiple * pit.value[2] * rs232c.mul;
}	}
else {	else {
cnt = (pc.multiple << 16) * rs232c.mul; // ver0.29	cnt = (pc.multiple << 16) * rs232c.mul;
}	}
nevent_set(NEVENT_RS232C, cnt, rs232ctimer, absolute);	nevent_set(NEVENT_RS232C, cnt, rs232ctimer, absolute);
}	}
Line 117 void rs232ctimer(NEVENTITEM item) {	Line 146 void rs232ctimer(NEVENTITEM item) {
rs232c_callback();	rs232c_callback();
}	}


// ---------------------------------------------------------------------------	// ---------------------------------------------------------------------------

static UINT16 itimer_latch(int ch) {	static UINT16 itimer_latch(int ch) {
Line 127 static UINT16 itimer_latch(int ch) {	Line 157 static UINT16 itimer_latch(int ch) {
switch(pit.mode[1] & 0x06) {	switch(pit.mode[1] & 0x06) {
case 0x00:	case 0x00:
case 0x04:	case 0x04:
return(pit.value[1].w);	return(pit.value[1]);
#ifdef uPD71054	#ifdef uPD71054
case 0x06:	case 0x06:
return(pit.value[1].w & 0xfffe);	return(pit.value[1] & 0xfffe);
#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((UINT16)clock);
	#endif
}	}
clock = nevent_getremain(NEVENT_ITIMER + ch);	clock = nevent_getremain(NEVENT_ITIMER + ch);
if (clock >= 0) {	if (clock >= 0) {
Line 141 static UINT16 itimer_latch(int ch) {	Line 185 static UINT16 itimer_latch(int ch) {
return(0);	return(0);
}	}


void itimer_setflag(int ch, BYTE value) {	void itimer_setflag(int ch, BYTE value) {

pit.flag[ch] = 0;	pit.flag[ch] = 0;
Line 150 void itimer_setflag(int ch, BYTE value)	Line 193 void itimer_setflag(int ch, BYTE value)
}	}
else { // latch	else { // latch
pit.mode[ch] &= ~0x30;	pit.mode[ch] &= ~0x30;
pit.latch[ch].w = itimer_latch(ch);	pit.latch[ch] = itimer_latch(ch);
}	}
}	}

Line 158 BOOL itimer_setcount(int ch, BYTE value)	Line 201 BOOL itimer_setcount(int ch, BYTE value)

switch(pit.mode[ch] & 0x30) {	switch(pit.mode[ch] & 0x30) {
case 0x10: // access low	case 0x10: // access low
pit.value[ch].w = value;	pit.value[ch] = value;
break;	break;

case 0x20: // access high	case 0x20: // access high
pit.value[ch].w = value << 8;	pit.value[ch] = value << 8;
break;	break;

case 0x30: // access word	case 0x30: // access word
if (!(pit.flag[ch] & 2)) {	if (!(pit.flag[ch] & 2)) {
pit.value[ch].w &= 0xff00;	pit.value[ch] &= 0xff00;
pit.value[ch].w += value;	pit.value[ch] += value;
pit.flag[ch] ^= 2;	pit.flag[ch] ^= 2;
return(TRUE);	return(TRUE);
}	}
pit.value[ch].w &= 0x00ff;	pit.value[ch] &= 0x00ff;
pit.value[ch].w += value << 8;	pit.value[ch] += value << 8;
pit.flag[ch] ^= 2;	pit.flag[ch] ^= 2;
break;	break;
}	}
Line 183 BOOL itimer_setcount(int ch, BYTE value)	Line 226 BOOL itimer_setcount(int ch, BYTE value)
BYTE itimer_getcount(int ch) {	BYTE itimer_getcount(int ch) {

BYTE ret;	BYTE ret;
union {	UINT16 w;
BYTE b[2];
UINT16 w;
} tim;

if (!(pit.mode[ch] & 0x30)) {	if (!(pit.mode[ch] & 0x30)) {
tim.w = pit.latch[ch].w;	w = pit.latch[ch];
}	}
else {	else {
tim.w = itimer_latch(ch); // ver0.30	w = itimer_latch(ch);
}	}
switch(pit.mode[ch] & 0x30) {	switch(pit.mode[ch] & 0x30) {
case 0x10: // access low	case 0x10: // access low
return((BYTE)tim.w);	return((BYTE)w);

case 0x20: // access high	case 0x20: // access high
return((BYTE)(tim.w >> 8));	return((BYTE)(w >> 8));
}	}
// access word	// access word
if (!(pit.flag[ch] & 1)) {	if (!(pit.flag[ch] & 1)) {
ret = (BYTE)tim.w;	ret = (BYTE)w;
}	}
else {	else {
ret = (BYTE)(tim.w >> 8);	ret = (BYTE)(w >> 8);
}	}
pit.flag[ch] ^= 1;	pit.flag[ch] ^= 1;
return(ret);	return(ret);
Line 218 BYTE itimer_getcount(int ch) {	Line 258 BYTE itimer_getcount(int ch) {
// system timer	// system timer
static void IOOUTCALL pit_o71(UINT port, BYTE dat) {	static void IOOUTCALL pit_o71(UINT port, BYTE dat) {

// TRACEOUT(("pic71: %d", dat));	// TRACEOUT(("pic o71: %x [%.4x %.4x]", dat, I286_CS, I286_IP));
if (itimer_setcount(0, dat)) {	if (itimer_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;
}	}
Line 238 static void IOOUTCALL pit_o73(UINT port,	Line 279 static void IOOUTCALL pit_o73(UINT port,
beep_lheventset(1);	beep_lheventset(1);
}	}
else {	else {
beep_hzset(pit.value[1].w);	beep_hzset(pit.value[1]);
}	}
(void)port;	(void)port;
}	}
Line 259 static void IOOUTCALL pit_o77(UINT port,	Line 300 static void IOOUTCALL pit_o77(UINT port,

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);	itimer_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 294 void itimer_reset(void) {	Line 336 void itimer_reset(void) {

ZeroMemory(&pit, sizeof(pit));	ZeroMemory(&pit, sizeof(pit));
if (pc.cpumode & CPUMODE_8MHz) {	if (pc.cpumode & CPUMODE_8MHz) {
pit.value[1].w = 998; // 4MHz	pit.value[1] = 998; // 4MHz
}	}
else {	else {
pit.value[1].w = 1229; // 5MHz	pit.value[1] = 1229; // 5MHz
}	}
pit.mode[0] = 0x30;	pit.mode[0] = 0x30;
pit.mode[1] = 0x56;	pit.mode[1] = 0x56;
pit.mode[2] = 0xb6;	pit.mode[2] = 0xb6;
pit.mode[3] = 0x36;	pit.mode[3] = 0x36;
setsystimerevent(NEVENT_ABSOLUTE);	setsystimerevent(NEVENT_ABSOLUTE);
beep_hzset(pit.value[1].w);	beep_hzset(pit.value[1]);
}	}

void itimer_bind(void) {	void itimer_bind(void) {

RetroPC.NET-CVS <cvs@retropc.net>

Removed from v.1.4
changed lines
	Added in v.1.9