np2/io/pic.c - diff

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Diff for /np2/io/pic.c between versions 1.2 and 1.15

version 1.2, 2003/10/21 11:22:05	version 1.15, 2004/03/05 04:39:59
Line 1	Line 1
#include "compiler.h"	#include "compiler.h"
#include "i286.h"	#include "cpucore.h"
#include "pccore.h"	#include "pccore.h"
#include "iocore.h"	#include "iocore.h"


static const _PICITEM def_master = {	static const _PICITEM def_master = {
0, {0, 0, 0, 0, 0, 0, 0, 0},	0, {0, 0, 0, 0, 0, 0, 0, 0},
0, {0, 0, 0, 0, 0, 0, 0, 0},
{7, 6, 5, 4, 3, 2, 1, 0},	{7, 6, 5, 4, 3, 2, 1, 0},
{0, 0x08, 0x00, 0},	{0, 0x08, 0x00, 0},
0x7d, 0, 0, 0,	0x7d, 0, 0, 0,
Line 14 static const _PICITEM def_master = {	Line 13 static const _PICITEM def_master = {

static const _PICITEM def_slave = {	static const _PICITEM def_slave = {
0, {0, 0, 0, 0, 0, 0, 0, 0},	0, {0, 0, 0, 0, 0, 0, 0, 0},
0, {0, 0, 0, 0, 0, 0, 0, 0},
{7, 6, 5, 4, 3, 2, 1, 0},	{7, 6, 5, 4, 3, 2, 1, 0},
{0, 0x10, 0x07, 0},	{0, 0x10, 0x07, 0},
0x70, 0, 0, 0,	0x71, 0, 0, 0,
0, 0, 0, 0};	0, 0, 0, 0};


// ------------------------------------------------------------ ext. interrupt	// ----

// 外部でISRを待避する割り込み対策

void extirq_push(void) {

PIC p;

p = &pic;
if (!p->ext_irq) {
p->ext_irq = 1;

p->pi[0].levelsbak = p->pi[0].levels;
(UINT32 )(p->pi[0].levelbak+0) = (UINT32 )(p->pi[0].level+0);
(UINT32 )(p->pi[0].levelbak+4) = (UINT32 )(p->pi[0].level+4);
p->pi[0].isrbak = p->pi[0].isr;

p->pi[1].levelsbak = p->pi[1].levels;
(UINT32 )(p->pi[1].levelbak+0) = (UINT32 )(p->pi[1].level+0);
(UINT32 )(p->pi[1].levelbak+4) = (UINT32 )(p->pi[1].level+4);
p->pi[1].isrbak = p->pi[1].isr;
}
}


void extirq_pop(void) {

PIC p;

p = &pic;
if (p->ext_irq) {
p->ext_irq = 0;

p->pi[0].levels = p->pi[0].levelsbak;
(UINT32 )(p->pi[0].level+0) = (UINT32 )(p->pi[0].levelbak+0);
(UINT32 )(p->pi[0].level+4) = (UINT32 )(p->pi[0].levelbak+4);
p->pi[0].isr = p->pi[0].isrbak;

p->pi[1].levels = p->pi[1].levelsbak;
(UINT32 )(p->pi[1].level+0) = (UINT32 )(p->pi[1].levelbak+0);
(UINT32 )(p->pi[1].level+4) = (UINT32 )(p->pi[1].levelbak+4);
p->pi[1].isr = p->pi[1].isrbak;
}
}


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

static void pic_rolpry(PICITEM pi) {	static void pic_rolpry(PICITEM pi) {

Line 79 static void pic_rolpry(PICITEM pi) {	Line 31 static void pic_rolpry(PICITEM pi) {
}	}


static void pic_downbylevel(PICITEM picp, BYTE level) {	static void pic_downbylevel(PICITEM picp, UINT level) {

int i;	int i;

Line 93 static void pic_downbylevel(PICITEM picp	Line 45 static void pic_downbylevel(PICITEM picp


// eoi処理	// eoi処理
static void pic_forceeoibylevel(PICITEM picp, BYTE level) {	static void pic_forceeoibylevel(PICITEM picp, UINT level) {

int i;	int i;

if (picp->isr & (1 << level)) {	if (picp->isr & (1 << level)) {
picp->isr &= ~(1 << level);	picp->isr &= ~(1 << level);
(picp->levels)--;	picp->levels--;
for (i=0; (i<picp->levels) && (picp->level[i] != level); i++) { }	for (i=0; (i<picp->levels) && (picp->level[i] != level); i++) { }
for (; i<picp->levels; i++) {	for (; i<picp->levels; i++) {
picp->level[i] = picp->level[i+1];	picp->level[i] = picp->level[i+1];
Line 112 void pic_irq(void) {	Line 64 void pic_irq(void) {

int i;	int i;
BYTE bit;	BYTE bit;
char pry;	SINT8 pry;
BYTE irq;	BYTE irq;
BYTE sirq;	BYTE sirq;
BYTE targetbit;	BYTE targetbit;
Line 121 void pic_irq(void) {	Line 73 void pic_irq(void) {
p = &pic;	p = &pic;

// 割込み許可で　要求あり？	// 割込み許可で　要求あり？
if ((isI286EI) && (!p->ext_irq) &&	if ((CPU_isEI) &&
((p->pi[0].irr & (~p->pi[0].imr)) \|\|	((p->pi[0].irr & (~p->pi[0].imr)) \|\|
(p->pi[1].irr & (~p->pi[1].imr)))) {	(p->pi[1].irr & (~p->pi[1].imr)))) {

// マスターの処理	// マスターの処理
Line 130 void pic_irq(void) {	Line 82 void pic_irq(void) {
pry = -1;	pry = -1;
}	}
else {	else {
pry = (char)p->pi[0].pry[p->pi[0].level[p->pi[0].levels - 1]];	pry = (SINT8)p->pi[0].pry[p->pi[0].level[p->pi[0].levels - 1]];
}	}
irq = 0xff;	irq = 0xff;
targetbit = 0;	targetbit = 0;
for (bit=1, i=0; bit; bit<<=1, i++) {	for (bit=1, i=0; i<8; bit<<=1, i++) {
if ((p->pi[0].irr & bit) &&	if ((p->pi[0].irr & bit) &&
(!((p->pi[0].imr \| p->pi[0].isr) & bit))) {	(!((p->pi[0].imr \| p->pi[0].isr) & bit))) {
if ((char)p->pi[0].pry[i] > pry) {	if ((SINT8)p->pi[0].pry[i] > pry) {
pry = p->pi[0].pry[i];	pry = p->pi[0].pry[i];
irq = (BYTE)i;	irq = (BYTE)i;
targetbit = bit;	targetbit = bit;
Line 152 void pic_irq(void) {	Line 104 void pic_irq(void) {
sirq = p->pi[1].icw[2] & 7;	sirq = p->pi[1].icw[2] & 7;
bit = 1 << sirq;	bit = 1 << sirq;
if (!((p->pi[0].imr \| p->pi[0].isr) & bit)) {	if (!((p->pi[0].imr \| p->pi[0].isr) & bit)) {
if ((char)p->pi[0].pry[sirq] > pry) {	if ((SINT8)p->pi[0].pry[sirq] > pry) {
irq = sirq;	irq = sirq;
targetbit = bit;	targetbit = bit;
}	}
Line 161 void pic_irq(void) {	Line 113 void pic_irq(void) {
// マスタの割込	// マスタの割込
if (irq != sirq) {	if (irq != sirq) {
if (targetbit) {	if (targetbit) {
if (p->pi[0].ext & targetbit) { // ver0.30
extirq_push();
}
p->pi[0].isr \|= targetbit;	p->pi[0].isr \|= targetbit;
p->pi[0].irr &= ~targetbit;	p->pi[0].irr &= ~targetbit;
p->pi[0].level[p->pi[0].levels++] = irq;	p->pi[0].level[p->pi[0].levels++] = irq;
if (irq == 0) { // ver0.28	if (irq == 0) { // ver0.28
nevent_reset(NEVENT_PICMASK);	nevent_reset(NEVENT_PICMASK);
}	}
i286_interrupt((BYTE)((p->pi[0].icw[1] & 0xf8) \| irq));	// TRACEOUT(("hardware-int %.2x", (p->pi[0].icw[1] & 0xf8) \| irq));
	CPU_INTERRUPT((REG8)((p->pi[0].icw[1] & 0xf8) \| irq));
return;	return;
}	}
if ((!p->pi[0].levels) \|\|	if ((!p->pi[0].levels) \|\|
Line 183 void pic_irq(void) {	Line 133 void pic_irq(void) {
pry = -1;	pry = -1;
}	}
else {	else {
pry = (char)p->pi[1].pry[p->pi[1].level[p->pi[1].levels - 1]];	pry = (SINT8)p->pi[1].pry[p->pi[1].level[p->pi[1].levels - 1]];
}	}
targetbit = 0;	targetbit = 0;
for (bit=1, i=0; bit; bit<<=1, i++) {	for (bit=1, i=0; i<8; bit<<=1, i++) {
if ((p->pi[1].irr & bit) &&	if ((p->pi[1].irr & bit) &&
(!((p->pi[1].imr \| p->pi[1].isr) & bit))) {	(!((p->pi[1].imr \| p->pi[1].isr) & bit))) {
if ((char)p->pi[1].pry[i] > pry) {	if ((SINT8)p->pi[1].pry[i] > pry) {
pry = p->pi[1].pry[i];	pry = p->pi[1].pry[i];
irq = (BYTE)i;	irq = (BYTE)i;
targetbit = bit;	targetbit = bit;
Line 199 void pic_irq(void) {	Line 149 void pic_irq(void) {
// スレーヴの割込	// スレーヴの割込
if (targetbit) {	if (targetbit) {
if (!(p->pi[0].icw[2] & targetbit)) {	if (!(p->pi[0].icw[2] & targetbit)) {
if (p->pi[1].ext & targetbit) { // ver0.30
extirq_push();
}
p->pi[1].isr \|= targetbit;	p->pi[1].isr \|= targetbit;
p->pi[1].irr &= ~targetbit;	p->pi[1].irr &= ~targetbit;
p->pi[1].level[p->pi[1].levels++] = irq;	p->pi[1].level[p->pi[1].levels++] = irq;
Line 211 void pic_irq(void) {	Line 158 void pic_irq(void) {
p->pi[0].irr &= ~(1 << sirq);	p->pi[0].irr &= ~(1 << sirq);
p->pi[0].level[p->pi[0].levels++] = sirq;	p->pi[0].level[p->pi[0].levels++] = sirq;
}	}
// TRACEOUT(("hardware int %.2x", (p->pi[1].icw[1] & 0xf8) \| irq));	// TRACEOUT(("hardware-int %.2x", (p->pi[1].icw[1] & 0xf8) \| irq));
i286_interrupt((BYTE)((p->pi[1].icw[1] & 0xf8) \| irq));	CPU_INTERRUPT((REG8)((p->pi[1].icw[1] & 0xf8) \| irq));
}	}
}	}
}	}
Line 230 void picmask(NEVENTITEM item) {	Line 177 void picmask(NEVENTITEM item) {
}	}
}	}

void pic_setirq(BYTE irq) {	void pic_setirq(REG8 irq) {

PICITEM pi;	PICITEM pi;
BYTE bit;	REG8 bit;

pi = pic.pi;	pi = pic.pi;
bit = 1 << (irq & 7);	bit = 1 << (irq & 7);
Line 243 void pic_setirq(BYTE irq) {	Line 190 void pic_setirq(BYTE irq) {
if (bit & PIC_SYSTEMTIMER) {	if (bit & PIC_SYSTEMTIMER) {
if ((pit.mode[0] & 0x0c) == 0x04) {	if ((pit.mode[0] & 0x0c) == 0x04) {
SINT32 cnt; // ver0.29	SINT32 cnt; // ver0.29
if (pit.value[0].w > 8) {	if (pit.value[0] > 8) {
cnt = pc.multiple * pit.value[0].w;	cnt = pccore.multiple * pit.value[0];
cnt >>= 2;	cnt >>= 2;
}	}
else {	else {
cnt = pc.multiple << (16 - 2);	cnt = pccore.multiple << (16 - 2);
}	}
nevent_set(NEVENT_PICMASK, cnt, picmask, NEVENT_ABSOLUTE);	nevent_set(NEVENT_PICMASK, cnt, picmask, NEVENT_ABSOLUTE);
}	}
Line 266 void pic_setirq(BYTE irq) {	Line 213 void pic_setirq(BYTE irq) {
}	}
}	}

void pic_resetirq(BYTE irq) {	void pic_resetirq(REG8 irq) {

PICITEM pi;	PICITEM pi;

Line 275 void pic_resetirq(BYTE irq) {	Line 222 void pic_resetirq(BYTE irq) {
}	}


void pic_registext(BYTE irq) {

PICITEM pi;

pi = pic.pi + ((irq >> 3) & 1);
pi->ext \|= (1 << (irq & 7));
}


// ---- I/O	// ---- I/O

static void IOOUTCALL pic_o00(UINT port, BYTE dat) {	static void IOOUTCALL pic_o00(UINT port, REG8 dat) {

PICITEM picp;	PICITEM picp;
BYTE level;	UINT level;

	// TRACEOUT(("pic %x %x", port, dat));
picp = &pic.pi[(port >> 3) & 1];	picp = &pic.pi[(port >> 3) & 1];
picp->writeicw = 0;	picp->writeicw = 0;
switch(dat & 0x18) {	switch(dat & 0x18) {
Line 336 static void IOOUTCALL pic_o00(UINT port,	Line 275 static void IOOUTCALL pic_o00(UINT port,
}	}
}	}

static void IOOUTCALL pic_o02(UINT port, BYTE dat) {	static void IOOUTCALL pic_o02(UINT port, REG8 dat) {

PICITEM picp;	PICITEM picp;

	// TRACEOUT(("pic %x %x", port, dat));
picp = &pic.pi[(port >> 3) & 1];	picp = &pic.pi[(port >> 3) & 1];
if (!picp->writeicw) {	if (!picp->writeicw) {
	#if 1
	UINT8 set;
	set = picp->imr & (~dat);
	// リセットされたビットは割り込みある？
	if ((CPU_isDI) \|\| (!(picp->irr & set))) {
	picp->imr = dat;
	return;
	}
	#endif
picp->imr = dat;	picp->imr = dat;
}	}
else {	else {
Line 354 static void IOOUTCALL pic_o02(UINT port,	Line 303 static void IOOUTCALL pic_o02(UINT port,
nevent_forceexit();	nevent_forceexit();
}	}

static BYTE IOINPCALL pic_i00(UINT port) {	static REG8 IOINPCALL pic_i00(UINT port) {

PICITEM picp;	PICITEM picp;

Line 371 static BYTE IOINPCALL pic_i00(UINT port)	Line 320 static BYTE IOINPCALL pic_i00(UINT port)
}	}
}	}

static BYTE IOINPCALL pic_i02(UINT port) {	static REG8 IOINPCALL pic_i02(UINT port) {

PICITEM picp;	PICITEM picp;

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