np2/i286c/i286c.c - diff

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Diff for /np2/i286c/i286c.c between versions 1.13 and 1.26

version 1.13, 2003/12/08 00:55:31	version 1.26, 2005/02/08 09:57:26
Line 2	Line 2
#include "cpucore.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 "dmax86.h"
#include "i286c.mcr"	#include "i286c.mcr"


I286CORE i286core;	I286CORE i286core;

const UINT8 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 UINT8 iflags[256] = { // Z_FLA	Line 42 const UINT8 iflags[256] = { // Z_FLA
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};


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

UINT8 _szpcflag8[0x200];

#if !defined(MEMOPTIMIZE)	#if !defined(MEMOPTIMIZE)
UINT8 _szpflag16[0x10000];	UINT8 _szpflag16[0x10000];
#endif	#endif
Line 65 const UINT8 iflags[256] = { // Z_FLA	Line 94 const UINT8 iflags[256] = { // Z_FLA

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

	#if !defined(MEMOPTIMIZE) \|\| (MEMOPTIMIZE < 2)
UINT i;	UINT i;
UINT bit;	#endif
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;
}
_szpcflag8[i+0x000] = f;
_szpcflag8[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 112 void i286c_initialize(void) {	Line 124 void i286c_initialize(void) {

#if !defined(MEMOPTIMIZE)	#if !defined(MEMOPTIMIZE)
for (i=0; i<0x10000; i++) {	for (i=0; i<0x10000; i++) {
	REG8 f;
	UINT bit;
f = P_FLAG;	f = P_FLAG;
for (bit=0x80; bit; bit>>=1) {	for (bit=0x80; bit; bit>>=1) {
if (i & bit) {	if (i & bit) {
Line 131 void i286c_initialize(void) {	Line 145 void i286c_initialize(void) {
i286cea_initialize();	i286cea_initialize();
#endif	#endif
v30cinit();	v30cinit();
	ZeroMemory(&i286core, sizeof(i286core));
}	}

void i286c_reset(void) {	void i286c_deinitialize(void) {

ZeroMemory(&I286_STAT, sizeof(I286_STAT));	if (CPU_EXTMEM) {
I286_CS = 0x1fc0;	_MFREE(CPU_EXTMEM);
CS_BASE = 0x1fc00;	CPU_EXTMEM = NULL;
	CPU_EXTMEMSIZE = 0;
	}
	}

	static void i286c_initreg(void) {

	I286_CS = 0xf000;
	CS_BASE = 0xf0000;
	I286_IP = 0xfff0;
I286_ADRSMASK = 0xfffff;	I286_ADRSMASK = 0xfffff;
}	}

	void i286c_reset(void) {

	ZeroMemory(&i286core.s, sizeof(i286core.s));
	i286c_initreg();
	}

	void i286c_shut(void) {

	ZeroMemory(&i286core.s, offsetof(I286STAT, cpu_type));
	i286c_initreg();
	}

	void i286c_setextsize(UINT32 size) {

	if (CPU_EXTMEMSIZE != size) {
	if (CPU_EXTMEM) {
	_MFREE(CPU_EXTMEM);
	CPU_EXTMEM = NULL;
	}
	if (size) {
	CPU_EXTMEM = (UINT8 *)_MALLOC(size + 16, "EXTMEM");
	if (CPU_EXTMEM == NULL) {
	size = 0;
	}
	}
	CPU_EXTMEMSIZE = size;
	}
	i286core.e.ems[0] = mem + 0xc0000;
	i286core.e.ems[1] = mem + 0xc4000;
	i286core.e.ems[2] = mem + 0xc8000;
	i286core.e.ems[3] = mem + 0xcc000;
	}

	void i286c_setemm(UINT frame, UINT32 addr) {

	UINT8 *ptr;

	frame &= 3;
	if (addr < USE_HIMEM) {
	ptr = mem + addr;
	}
	else if ((addr - 0x100000 + 0x4000) <= CPU_EXTMEMSIZE) {
	ptr = CPU_EXTMEM + (addr - 0x100000);
	}
	else {
	ptr = mem + 0xc0000 + (frame << 14);
	}
	i286core.e.ems[frame] = ptr;
	}


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

const BYTE *ptr;	const UINT8 *ptr;

REGPUSH0(REAL_FLAGREG)	REGPUSH0(REAL_FLAGREG)
REGPUSH0(I286_CS)	REGPUSH0(I286_CS)
Line 152 const BYTE *ptr;	Line 227 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;
Line 162 const BYTE *ptr;	Line 237 const BYTE *ptr;
void CPUCALL i286c_interrupt(REG8 vect) {	void CPUCALL i286c_interrupt(REG8 vect) {

UINT op;	UINT op;
const BYTE *ptr;	const UINT8 *ptr;

op = i286_memoryread(I286_IP + CS_BASE);	op = i286_memoryread(I286_IP + CS_BASE);
if (op == 0xf4) { // hlt	if (op == 0xf4) { // hlt
Line 175 const BYTE *ptr;	Line 250 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;
Line 193 void i286c(void) {	Line 268 void i286c(void) {
if (I286_TRAP) {	if (I286_TRAP) {
i286c_interrupt(1);	i286c_interrupt(1);
}	}
dmap_i286();	dmax86();
} while(I286_REMCLOCK > 0);	} while(I286_REMCLOCK > 0);
}	}
else if (dmac.working) {	else if (dmac.working) {
do {	do {
GET_PCBYTE(opcode);	GET_PCBYTE(opcode);
i286op[opcode]();	i286op[opcode]();
dmap_i286();	dmax86();
} while(I286_REMCLOCK > 0);	} while(I286_REMCLOCK > 0);
}	}
else {	else {
Line 225 void i286c_step(void) {	Line 300 void i286c_step(void) {
if (I286_OV) {	if (I286_OV) {
I286_FLAG \|= (O_FLAG);	I286_FLAG \|= (O_FLAG);
}	}
dmap_i286();	dmax86();
}	}


// ---- test	// ---- test

#if defined(I286C_TEST)	#if defined(I286C_TEST)
BYTE BYTESZPF(UINT r) {	UINT8 BYTESZPF(UINT r) {

if (r & (~0xff)) {	if (r & (~0xff)) {
TRACEOUT(("BYTESZPF bound error: %x", r));	TRACEOUT(("BYTESZPF bound error: %x", r));
}	}
return(_szpcflag8[r & 0xff]);	return(iflags[r & 0xff]);
}	}

BYTE BYTESZPCF(UINT r) {	UINT8 BYTESZPCF(UINT r) {

if (r & (~0x1ff)) {	if (r & (~0x1ff)) {
TRACEOUT(("BYTESZPCF bound error: %x", r));	TRACEOUT(("BYTESZPCF bound error: %x", r));
}	}
return(_szpcflag8[r & 0x1ff]);	return(iflags[r & 0x1ff]);
}	}

BYTE WORDSZPF(UINT32 r) {	UINT8 WORDSZPF(UINT32 r) {

BYTE f1;	UINT8 f1;
BYTE f2;	UINT8 f2;

if (r & (~0xffff)) {	if (r & (~0xffff)) {
TRACEOUT(("WORDSZPF bound error: %x", r));	TRACEOUT(("WORDSZPF bound error: %x", r));
}	}
f1 = _szpflag16[r & 0xffff];	f1 = _szpflag16[r & 0xffff];
f2 = _szpcflag8[r & 0xff] & P_FLAG;	f2 = iflags[r & 0xff] & P_FLAG;
f2 += (r)?0:Z_FLAG;	f2 += (r)?0:Z_FLAG;
f2 += (r >> 8) & S_FLAG;	f2 += (r >> 8) & S_FLAG;
if (f1 != f2) {	if (f1 != f2) {
Line 266 BYTE WORDSZPF(UINT32 r) {	Line 341 BYTE WORDSZPF(UINT32 r) {
return(f1);	return(f1);
}	}

BYTE WORDSZPCF(UINT32 r) {	UINT8 WORDSZPCF(UINT32 r) {

BYTE f1;	UINT8 f1;
BYTE f2;	UINT8 f2;

if ((r & 0xffff0000) && (!(r & 0x00010000))) {	if ((r & 0xffff0000) && (!(r & 0x00010000))) {
TRACEOUT(("WORDSZPCF bound error: %x", r));	TRACEOUT(("WORDSZPCF bound error: %x", r));
Line 277 BYTE WORDSZPCF(UINT32 r) {	Line 352 BYTE WORDSZPCF(UINT32 r) {
f1 = (r >> 16) & 1;	f1 = (r >> 16) & 1;
f1 += _szpflag16[LOW16(r)];	f1 += _szpflag16[LOW16(r)];

f2 = _szpcflag8[r & 0xff] & P_FLAG;	f2 = iflags[r & 0xff] & P_FLAG;
f2 += (LOW16(r))?0:Z_FLAG;	f2 += (LOW16(r))?0:Z_FLAG;
f2 += (r >> 8) & S_FLAG;	f2 += (r >> 8) & S_FLAG;
f2 += (r >> 16) & 1;	f2 += (r >> 16) & 1;

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Removed from v.1.13
changed lines
	Added in v.1.26