np2/i286c/i286c.c - diff

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Diff for /np2/i286c/i286c.c between versions 1.8 and 1.17

version 1.8, 2003/11/24 09:14:01	version 1.17, 2003/12/25 20:30:22
Line 1	Line 1
#include "compiler.h"	#include "compiler.h"
#include "i286.h"	#include "cpucore.h"
#include "i286c.h"	#include "i286c.h"
#include "v30patch.h"	#include "v30patch.h"
#include "memory.h"
#include "pccore.h"	#include "pccore.h"
#include "iocore.h"	#include "iocore.h"
#include "dmap.h"	#include "dmap.h"
#include "i286c.mcr"	#include "i286c.mcr"


I286REG i286reg;	I286CORE i286core;

const BYTE iflags[256] = { // Z_FLAG, S_FLAG, P_FLAG	const UINT8 iflags[512] = { // Z_FLAG, S_FLAG, P_FLAG
0x44, 0x00, 0x00, 0x04, 0x00, 0x04, 0x04, 0x00,	0x44, 0x00, 0x00, 0x04, 0x00, 0x04, 0x04, 0x00,
0x00, 0x04, 0x04, 0x00, 0x04, 0x00, 0x00, 0x04,	0x00, 0x04, 0x04, 0x00, 0x04, 0x00, 0x00, 0x04,
0x00, 0x04, 0x04, 0x00, 0x04, 0x00, 0x00, 0x04,	0x00, 0x04, 0x04, 0x00, 0x04, 0x00, 0x00, 0x04,
Line 43 const BYTE iflags[256] = { // Z_FLAG	Line 42 const BYTE iflags[256] = { // Z_FLAG
0x80, 0x84, 0x84, 0x80, 0x84, 0x80, 0x80, 0x84,	0x80, 0x84, 0x84, 0x80, 0x84, 0x80, 0x80, 0x84,
0x84, 0x80, 0x80, 0x84, 0x80, 0x84, 0x84, 0x80,	0x84, 0x80, 0x80, 0x84, 0x80, 0x84, 0x84, 0x80,
0x84, 0x80, 0x80, 0x84, 0x80, 0x84, 0x84, 0x80,	0x84, 0x80, 0x80, 0x84, 0x80, 0x84, 0x84, 0x80,
0x80, 0x84, 0x84, 0x80, 0x84, 0x80, 0x80, 0x84};	0x80, 0x84, 0x84, 0x80, 0x84, 0x80, 0x80, 0x84,
	0x45, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x05, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x05, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x05, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x05, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x05, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x05, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x01, 0x05, 0x05, 0x01, 0x05, 0x01, 0x01, 0x05,
	0x05, 0x01, 0x01, 0x05, 0x01, 0x05, 0x05, 0x01,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x85, 0x81, 0x81, 0x85, 0x81, 0x85, 0x85, 0x81,
	0x81, 0x85, 0x85, 0x81, 0x85, 0x81, 0x81, 0x85};


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

BYTE szpcflag[0x200];

#if !defined(MEMOPTIMIZE)	#if !defined(MEMOPTIMIZE)
BYTE szpflag_w[0x10000];	UINT8 _szpflag16[0x10000];
#endif	#endif

#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)	#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)
BYTE *_reg8_b53[256];	UINT8 *_reg8_b53[256];
BYTE *_reg8_b20[256];	UINT8 *_reg8_b20[256];
#endif	#endif
#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)	#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)
UINT16 *_reg16_b53[256];	UINT16 *_reg16_b53[256];
UINT16 *_reg16_b20[256];	UINT16 *_reg16_b20[256];
#endif	#endif

void i286_initialize(void) {	void i286c_initialize(void) {

UINT i;	UINT i;
UINT bit;	UINT bit;
BYTE f;	REG8 f;

for (i=0; i<0x100; i++) {
f = P_FLAG;
for (bit=0x80; bit; bit>>=1) {
if (i & bit) {
f ^= P_FLAG;
}
}
if (!(i & 0xff)) {
f \|= Z_FLAG;
}
if (i & 0x80) {
f \|= S_FLAG;
}
szpcflag[i+0x000] = f;
szpcflag[i+0x100] = f \| C_FLAG;
}

#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)	#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)
for (i=0; i<0x100; i++) {	for (i=0; i<0x100; i++) {
Line 95 void i286_initialize(void) {	Line 107 void i286_initialize(void) {
pos = ((i & 0x20)?0:1);	pos = ((i & 0x20)?0:1);
#endif	#endif
pos += ((i >> 3) & 3) * 2;	pos += ((i >> 3) & 3) * 2;
_reg8_b53[i] = ((BYTE *)&I286_REG) + pos;	_reg8_b53[i] = ((UINT8 *)&I286_REG) + pos;
#if defined(BYTESEX_LITTLE)	#if defined(BYTESEX_LITTLE)
pos = ((i & 0x4)?1:0);	pos = ((i & 0x4)?1:0);
#else	#else
pos = ((i & 0x4)?0:1);	pos = ((i & 0x4)?0:1);
#endif	#endif
pos += (i & 3) * 2;	pos += (i & 3) * 2;
_reg8_b20[i] = ((BYTE *)&I286_REG) + pos;	_reg8_b20[i] = ((UINT8 *)&I286_REG) + pos;
#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)	#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)
_reg16_b53[i] = ((UINT16 *)&I286_REG) + ((i >> 3) & 7);	_reg16_b53[i] = ((UINT16 *)&I286_REG) + ((i >> 3) & 7);
_reg16_b20[i] = ((UINT16 *)&I286_REG) + (i & 7);	_reg16_b20[i] = ((UINT16 *)&I286_REG) + (i & 7);
Line 124 void i286_initialize(void) {	Line 136 void i286_initialize(void) {
if (i & 0x8000) {	if (i & 0x8000) {
f \|= S_FLAG;	f \|= S_FLAG;
}	}
szpflag_w[i] = f;	_szpflag16[i] = f;
}	}
#endif	#endif
#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)	#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)
i286cea_initialize();	i286cea_initialize();
#endif	#endif
v30init();	v30cinit();
}	}

void i286_reset(void) {	void i286c_reset(void) {

i286_initialize();	ZeroMemory(&I286_STAT, sizeof(I286_STAT));
ZeroMemory(&i286reg, sizeof(i286reg));	I286_CS = 0xf000;
I286_CS = 0x1fc0;	CS_BASE = 0xf0000;
CS_BASE = 0x1fc00;	I286_IP = 0xfff0;
	I286_ADRSMASK = 0xfffff;
}	}

void i286_resetprefetch(void) {	void i286c_shut(void) {

	I286_MSW = 0;

	I286_ES = 0;
	I286_CS = 0xf000;
	I286_SS = 0;
	I286_DS = 0;

	ES_BASE = 0;
	CS_BASE = 0xf0000;
	SS_BASE = 0;
	DS_BASE = 0;
	SS_FIX = 0;
	DS_FIX = 0;

	I286_IP = 0xfff0;
	I286_ADRSMASK = 0xfffff;
}	}

void CPUCALL i286_intnum(UINT vect, UINT16 IP) {	void CPUCALL i286c_intnum(UINT vect, REG16 IP) {

const BYTE *ptr;	const BYTE *ptr;

Line 155 const BYTE *ptr;	Line 185 const BYTE *ptr;
I286_FLAG &= ~(T_FLAG \| I_FLAG);	I286_FLAG &= ~(T_FLAG \| I_FLAG);
I286_TRAP = 0;	I286_TRAP = 0;

ptr = I286_MEM + (vect * 4);	ptr = mem + (vect * 4);
I286_IP = LOADINTELWORD(ptr+0); // real mode!	I286_IP = LOADINTELWORD(ptr+0); // real mode!
I286_CS = LOADINTELWORD(ptr+2); // real mode!	I286_CS = LOADINTELWORD(ptr+2); // real mode!
CS_BASE = I286_CS << 4;	CS_BASE = I286_CS << 4;
I286_WORKCLOCK(20);	I286_WORKCLOCK(20);
}	}

void CPUCALL i286_interrupt(BYTE vect) {	void CPUCALL i286c_interrupt(REG8 vect) {

UINT op;	UINT op;
const BYTE *ptr;	const BYTE *ptr;
Line 178 const BYTE *ptr;	Line 208 const BYTE *ptr;
I286_FLAG &= ~(T_FLAG \| I_FLAG);	I286_FLAG &= ~(T_FLAG \| I_FLAG);
I286_TRAP = 0;	I286_TRAP = 0;

ptr = I286_MEM + (vect * 4);	ptr = mem + (vect * 4);
I286_IP = LOADINTELWORD(ptr+0); // real mode!	I286_IP = LOADINTELWORD(ptr + 0); // real mode!
I286_CS = LOADINTELWORD(ptr+2); // real mode!	I286_CS = LOADINTELWORD(ptr + 2); // real mode!
CS_BASE = I286_CS << 4;	CS_BASE = I286_CS << 4;
I286_WORKCLOCK(20);	I286_WORKCLOCK(20);
}	}

void i286(void) {	void i286c(void) {

UINT opcode;	UINT opcode;

Line 194 void i286(void) {	Line 224 void i286(void) {
GET_PCBYTE(opcode);	GET_PCBYTE(opcode);
i286op[opcode]();	i286op[opcode]();
if (I286_TRAP) {	if (I286_TRAP) {
i286_interrupt(1);	i286c_interrupt(1);
}	}
dmap_i286();	dmap_i286();
} while(I286_REMCLOCK > 0);	} while(I286_REMCLOCK > 0);
Line 214 void i286(void) {	Line 244 void i286(void) {
}	}
}	}

void i286_step(void) {	void i286c_step(void) {

UINT opcode;	UINT opcode;

Line 231 void i286_step(void) {	Line 261 void i286_step(void) {
dmap_i286();	dmap_i286();
}	}


	// ---- test

	#if defined(I286C_TEST)
	BYTE BYTESZPF(UINT r) {

	if (r & (~0xff)) {
	TRACEOUT(("BYTESZPF bound error: %x", r));
	}
	return(iflags[r & 0xff]);
	}

	BYTE BYTESZPCF(UINT r) {

	if (r & (~0x1ff)) {
	TRACEOUT(("BYTESZPCF bound error: %x", r));
	}
	return(iflags[r & 0x1ff]);
	}

	BYTE WORDSZPF(UINT32 r) {

	BYTE f1;
	BYTE f2;

	if (r & (~0xffff)) {
	TRACEOUT(("WORDSZPF bound error: %x", r));
	}
	f1 = _szpflag16[r & 0xffff];
	f2 = iflags[r & 0xff] & P_FLAG;
	f2 += (r)?0:Z_FLAG;
	f2 += (r >> 8) & S_FLAG;
	if (f1 != f2) {
	TRACEOUT(("word flag error: %.2x %.2x", f1, f2));
	}
	return(f1);
	}

	BYTE WORDSZPCF(UINT32 r) {

	BYTE f1;
	BYTE f2;

	if ((r & 0xffff0000) && (!(r & 0x00010000))) {
	TRACEOUT(("WORDSZPCF bound error: %x", r));
	}
	f1 = (r >> 16) & 1;
	f1 += _szpflag16[LOW16(r)];

	f2 = iflags[r & 0xff] & P_FLAG;
	f2 += (LOW16(r))?0:Z_FLAG;
	f2 += (r >> 8) & S_FLAG;
	f2 += (r >> 16) & 1;

	if (f1 != f2) {
	TRACEOUT(("word flag error: %.2x %.2x", f1, f2));
	}
	return(f1);
	}
	#endif

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