xmil/io/ctc.c - diff

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Diff for /xmil/io/ctc.c between versions 1.9 and 1.15

version 1.9, 2004/08/13 02:16:33	version 1.15, 2004/08/15 17:51:53
Line 16 static SINT32 minclock(const CTCCH *ch)	Line 16 static SINT32 minclock(const CTCCH *ch)
for (i=0; i<3; i++) {	for (i=0; i<3; i++) {
if ((ch->cmd[i] & 0x82) == 0x80) {	if ((ch->cmd[i] & 0x82) == 0x80) {
clock = ch->count[i];	clock = ch->count[i];
if (ch->cmd[i] & 0x40) {
clock = clock * 2;
}
event = min(event, clock);	event = min(event, clock);
}	}
}	}
Line 27 static SINT32 minclock(const CTCCH *ch)	Line 24 static SINT32 minclock(const CTCCH *ch)
if (ch->cmd[3] & 0x40) {	if (ch->cmd[3] & 0x40) {
clock = (clock - 1) * ch->countmax[0];	clock = (clock - 1) * ch->countmax[0];
clock += ch->count[0];	clock += ch->count[0];
if (ch->cmd[0] & 0x40) {
clock = clock * 2;
}
}	}
event = min(event, clock);	event = min(event, clock);
}	}
event = event / 2;
if (event == 0) {	if (event == 0) {
event = 1;	event = 1;
}	}
Line 59 static REG8 ctcwork(CTCCH *ch) {	Line 52 static REG8 ctcwork(CTCCH *ch) {

// 0	// 0
if (!(ch->cmd[0] & 0x02)) {	if (!(ch->cmd[0] & 0x02)) {
pulse = stepclock; // 2MHz	pulse = stepclock;
if (!(ch->cmd[0] & 0x40)) {
pulse = pulse * 2; // 4MHz
}
count = ch->count[0];	count = ch->count[0];
count -= pulse;	count -= pulse;
if (count <= 0) {	if (count <= 0) {
Line 77 static REG8 ctcwork(CTCCH *ch) {	Line 67 static REG8 ctcwork(CTCCH *ch) {
// 3	// 3
if (!(ch->cmd[3] & 0x02)) {	if (!(ch->cmd[3] & 0x02)) {
if (!(ch->cmd[3] & 0x40)) {	if (!(ch->cmd[3] & 0x40)) {
pulse3 = stepclock * 2; // 4MHz	pulse3 = stepclock;
}	}
count = ch->count[3];	count = ch->count[3];
count -= pulse3;	count -= pulse3;
Line 90 static REG8 ctcwork(CTCCH *ch) {	Line 80 static REG8 ctcwork(CTCCH *ch) {

// 1	// 1
if (!(ch->cmd[1] & 0x02)) {	if (!(ch->cmd[1] & 0x02)) {
pulse = stepclock; // 2MHz	pulse = stepclock;
if (!(ch->cmd[1] & 0x40)) {
pulse = pulse * 2; // 4MHz
}
count = ch->count[1];	count = ch->count[1];
count -= pulse;	count -= pulse;
if (count <= 0) {	if (count <= 0) {
Line 105 static REG8 ctcwork(CTCCH *ch) {	Line 92 static REG8 ctcwork(CTCCH *ch) {

// 2	// 2
if (!(ch->cmd[2] & 0x02)) {	if (!(ch->cmd[2] & 0x02)) {
pulse = stepclock; // 2MHz	pulse = stepclock;
if (!(ch->cmd[2] & 0x40)) {
pulse = pulse * 2; // 4MHz
}
count = ch->count[2];	count = ch->count[2];
count -= pulse;	count -= pulse;
if (count <= 0) {	if (count <= 0) {
Line 171 BRESULT ieitem_ctc(UINT id) {	Line 155 BRESULT ieitem_ctc(UINT id) {
intr \|= ch->intr;	intr \|= ch->intr;
r = FALSE;	r = FALSE;
if (intr) {	if (intr) {
for (i=0, bit=1; i<4; i++, bit<<=1) {	for (i=0, bit=1; i<4; i++, bit<<=1)
	// for (i=4, bit=8; i--; bit>>=1)
	{
if (intr & bit) {	if (intr & bit) {
	if (!(ch->cmd[i] & 0x80)) {
	intr ^= bit;
	}
#if 1 // ��Υ��ߥ󥰢��Ȥǽ��	#if 1 // ��Υ��ߥ󥰢��Ȥǽ��
if (0)	else if (0)
#elif 1	#elif 1
if ((ch->countmax[i] - ch->count[i]) >= 256)	else if ((ch->countmax[i] - ch->count[i]) >= ch->range[i])
#elif 0	#elif 0
if (((ch->count[i] * 17) >> 4) < ch->countmax[i])	else if (((ch->cmd[i] & 0x10) == 0) &&
	((ch->countmax[i] - ch->count[i]) >= (256 >> 1)))
#else	#else
if (ch->count[i] != ch->countmax[i])	else if (ch->count[i] != ch->countmax[i])
#endif	#endif
{	{
intr ^= bit;	intr ^= bit;
}	}
else if (!(ch->cmd[i] & 0x80)) {
intr ^= bit;
}
else if (!r) {	else if (!r) {
r = TRUE;	r = TRUE;
intr ^= bit;	intr ^= bit;
// TRACEOUT(("ctc int %d %d", ch->num, i));	ch->irq = (UINT8)i;
	// TRACEOUT(("ctc int %d %d [%.2x]", ch->num, i, ch->cmd[i]));
Z80_INTERRUPT((REG8)(ch->vector + (i << 1)));	Z80_INTERRUPT((REG8)(ch->vector + (i << 1)));
}	}
}	}
Line 207 BRESULT ieitem_ctc(UINT id) {	Line 195 BRESULT ieitem_ctc(UINT id) {
return(r);	return(r);
}	}

	void ieeoi_ctc(UINT id) {

	CTCCH *ch;
	REG8 intr;
	UINT curirq;

	ch = ctc.ch + (id - IEVENT_CTC0);
	intr = ctcwork(ch) \| ch->intr;
	curirq = ch->irq;
	if (intr & (1 << curirq)) { // ��˳��
	// ��󥿤��Ǥʤ��г��ߤ�ä�
	if ((ch->countmax[curirq] - ch->count[curirq]) >= ch->range[curirq]) {
	intr ^= (1 << curirq);
	}
	}
	ch->intr = intr;
	if (intr) {
	ievent_set(id);
	}
	else {
	ctcnextevent(ch);
	}
	}


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

Line 219 static void ctcch_o(CTCCH *ch, UINT port	Line 231 static void ctcch_o(CTCCH *ch, UINT port
if (ch->cmd[port] & 0x04) {	if (ch->cmd[port] & 0x04) {
ctcstep(ch);	ctcstep(ch);
ch->basecnt[port] = value;	ch->basecnt[port] = value;
count = 256;	count = ((value - 1) & 0xff) + 1;
if (value) {
count = (SINT32)value;
}
scale = 0;	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 - 1;
}	}
else {	else {
scale = 4;	scale = 4 - 1;
}	}
}	}
count <<= scale;
ch->scale[port] = scale;	ch->scale[port] = scale;
ch->countmax[port] = count;	ch->countmax[port] = count << scale;
ch->count[port] = count;	ch->count[port] = count << scale;
	ch->range[port] = 1 << scale;
ch->cmd[port] &= ~6;	ch->cmd[port] &= ~6;
ctcnextevent(ch);	ctcnextevent(ch);
}	}
Line 315 void ctc_reset(void) {	Line 324 void ctc_reset(void) {
for (i=0; i<3; i++) {	for (i=0; i<3; i++) {
ctc.ch[i].num = (UINT8)i;	ctc.ch[i].num = (UINT8)i;
for (j=0; j<4; j++) {	for (j=0; j<4; j++) {
ctc.ch[i].cmd[j] = 0x03;	ctc.ch[i].cmd[j] = 0x23;
ctc.ch[i].scale[j] = 8;	ctc.ch[i].scale[j] = 7;
ctc.ch[i].count[j] = 256 << 8;	ctc.ch[i].count[j] = 256 << 7;
ctc.ch[i].countmax[j] = 256 << 8;	ctc.ch[i].countmax[j] = 256 << 7;
}	}
}	}
}	}

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Removed from v.1.9
changed lines
	Added in v.1.15