np2/bios/bios1b.c - diff

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Diff for /np2/bios/bios1b.c between versions 1.13 and 1.16

version 1.13, 2004/01/23 15:05:04	version 1.16, 2004/01/29 09:41:49
Line 9	Line 9
#include "fddfile.h"	#include "fddfile.h"
#include "fdd_mtr.h"	#include "fdd_mtr.h"
#include "sxsi.h"	#include "sxsi.h"
#include "timing.h"


enum {	enum {
Line 24 static UINT mtr_r = 0;	Line 23 static UINT mtr_r = 0;

// ---- FDD	// ---- FDD

	static void setfdcmode(REG8 drv, REG8 type, REG8 rpm) {

	if (drv < 4) {
	fdc.chgreg = type;
	fdc.rpm[drv] = rpm;
	if (type & 2) {
	CTRL_FDMEDIA = DISKTYPE_2HD;
	}
	else {
	CTRL_FDMEDIA = DISKTYPE_2DD;
	}
	}
	}

void fddbios_equip(REG8 type, BOOL clear) {	void fddbios_equip(REG8 type, BOOL clear) {

REG16 diskequip;	REG16 diskequip;
Line 32 void fddbios_equip(REG8 type, BOOL clear	Line 45 void fddbios_equip(REG8 type, BOOL clear
if (clear) {	if (clear) {
diskequip &= 0x0f00;	diskequip &= 0x0f00;
}	}
if (type == DISKTYPE_2HD) {	if (type & 1) {
	diskequip &= 0xfff0;
diskequip \|= 0x0003;	diskequip \|= 0x0003;
}	}
if (type == DISKTYPE_2DD) {	else {
	diskequip &= 0xf0ff;
diskequip \|= 0x0300;	diskequip \|= 0x0300;
}	}
SETBIOSMEM16(MEMW_DISK_EQUIP, diskequip);	SETBIOSMEM16(MEMW_DISK_EQUIP, diskequip);
Line 84 static BOOL biosfd_seek(REG8 track, BOOL	Line 99 static BOOL biosfd_seek(REG8 track, BOOL
return(SUCCESS);	return(SUCCESS);
}	}

static UINT16 fdfmt_biospara(REG8 fmt, REG8 rpm) { // ver0.31	static UINT16 fdfmt_biospara(REG8 type, REG8 rpm, REG8 fmt) {

UINT seg;	UINT seg;
UINT off;	UINT off;
Line 94 static UINT16 fdfmt_biospara(REG8 fmt, R	Line 109 static UINT16 fdfmt_biospara(REG8 fmt, R
if (n >= 4) {	if (n >= 4) {
n = 3;	n = 3;
}	}
if (CTRL_FDMEDIA == DISKTYPE_2HD) {	if (type & 2) {
seg = GETBIOSMEM16(MEMW_F2HD_P_SEG);	seg = GETBIOSMEM16(MEMW_F2HD_P_SEG);
off = GETBIOSMEM16(MEMW_F2HD_P_OFF);	off = GETBIOSMEM16(MEMW_F2HD_P_OFF);
}	}
Line 117 static UINT16 fdfmt_biospara(REG8 fmt, R	Line 132 static UINT16 fdfmt_biospara(REG8 fmt, R
return(i286_memword_read(seg, off));	return(i286_memword_read(seg, off));
}	}

static void change_rpm(REG8 rpm) { // ver0.31

if (np2cfg.usefd144) {
fdc.rpm = rpm;
}
}



enum {	enum {
FDCBIOS_NORESULT,	FDCBIOS_NORESULT,
Line 262 static void b0clr(void) {	Line 269 static void b0clr(void) {
}	}
#endif	#endif

static REG8 fdd_operate(REG8 type, BOOL ndensity, REG8 rpm) { // ver0.31	static REG8 fdd_operate(REG8 type, REG8 rpm, BOOL ndensity) {

REG8 ret_ah = 0x60;	REG8 ret_ah = 0x60;
UINT16 size;	UINT16 size;
Line 279 static REG8 fdd_operate(REG8 type, BOOL	Line 286 static REG8 fdd_operate(REG8 type, BOOL
mtr_c = 0xff;	mtr_c = 0xff;
mtr_r = 0;	mtr_r = 0;


// �Ȥꤢ��BIOS�λ��̵�뤹��	// �Ȥꤢ��BIOS�λ��̵�뤹��
fdc.mf = 0xff; // ver0.29	fdc.mf = 0xff; // ver0.29

// TRACE_("int 1Bh", CPU_AH);	// TRACE_("int 1Bh", CPU_AH);

change_rpm(rpm); // ver0.31	setfdcmode(CPU_AL & 3, type, rpm);

if ((CPU_AH & 0x0f) != 0x0a) {	if ((CPU_AH & 0x0f) != 0x0a) {
fdc.crcn = 0;	fdc.crcn = 0;
}	}
if ((CPU_AH & 0x0f) != 0x03) {	if ((CPU_AH & 0x0f) != 0x03) {
CTRL_FDMEDIA = type;	if (type & 2) {
switch(type) {	if (pic.pi[1].imr & PIC_INT42) {
case DISKTYPE_2HD:	return(0x40);
if (pic.pi[1].imr & PIC_INT42) {	}
return(0xd0);	}
}	else {
break;	if (pic.pi[1].imr & PIC_INT41) {
case DISKTYPE_2DD:	return(0x40);
if (pic.pi[1].imr & PIC_INT41) {	}
return(0xd0);
}
break;
}	}
if (fdc.us != (CPU_AL & 0x03)) {	if (fdc.us != (CPU_AL & 0x03)) {
fdc.us = CPU_AL & 0x03;	fdc.us = CPU_AL & 0x03;
Line 359 static REG8 fdd_operate(REG8 type, BOOL	Line 363 static REG8 fdd_operate(REG8 type, BOOL
}	}
}	}
biosfd_setchrn();	biosfd_setchrn();
para = fdfmt_biospara(0, rpm);	para = fdfmt_biospara(type, rpm, 0);
if (!para) {	if (!para) {
ret_ah = 0xd0;	ret_ah = 0xd0;
break;	break;
Line 448 static REG8 fdd_operate(REG8 type, BOOL	Line 452 static REG8 fdd_operate(REG8 type, BOOL
}	}
}	}
biosfd_setchrn();	biosfd_setchrn();
para = fdfmt_biospara(0, rpm);	para = fdfmt_biospara(type, rpm, 0);
if (!para) {	if (!para) {
ret_ah = 0xd0;	ret_ah = 0xd0;
break;	break;
Line 513 static REG8 fdd_operate(REG8 type, BOOL	Line 517 static REG8 fdd_operate(REG8 type, BOOL
}	}
}	}
biosfd_setchrn();	biosfd_setchrn();
para = fdfmt_biospara(0, rpm);	para = fdfmt_biospara(type, rpm, 0);
if (!para) {	if (!para) {
ret_ah = 0xd0;	ret_ah = 0xd0;
break;	break;
Line 634 static REG8 fdd_operate(REG8 type, BOOL	Line 638 static REG8 fdd_operate(REG8 type, BOOL
}	}
fdc.d = CPU_DL;	fdc.d = CPU_DL;
fdc.N = CPU_CH;	fdc.N = CPU_CH;
para = fdfmt_biospara(1, rpm);	para = fdfmt_biospara(type, rpm, 1);
if (!para) {	if (!para) {
ret_ah = 0xd0;	ret_ah = 0xd0;
break;	break;
Line 646 static REG8 fdd_operate(REG8 type, BOOL	Line 650 static REG8 fdd_operate(REG8 type, BOOL
i286_memstr_read(CPU_ES, pos, ID, 4);	i286_memstr_read(CPU_ES, pos, ID, 4);
fdd_formating(ID);	fdd_formating(ID);
pos += 4;	pos += 4;
	if (ID[3] < 8) {
	mtr_r += 128 << ID[3];
	}
	else {
	mtr_r += 128 << 8;
	}
}	}
ret_ah = 0x00;	ret_ah = 0x00;
break;	break;
Line 659 static REG8 fdd_operate(REG8 type, BOOL	Line 669 static REG8 fdd_operate(REG8 type, BOOL

// -------------------------------------------------------------------- BIOS	// -------------------------------------------------------------------- BIOS

static UINT16 boot_fd1(REG8 rpm) { // ver0.31	static UINT16 boot_fd1(REG8 type, REG8 rpm) {

UINT remain;	UINT remain;
UINT size;	UINT size;
UINT32 pos;	UINT32 pos;
UINT16 bootseg;	UINT16 bootseg;

change_rpm(rpm); // ver0.31	setfdcmode(fdc.us, type, rpm);
if (biosfd_seek(0, 0)) {	if (biosfd_seek(0, 0)) {
return(0);	return(0);
}	}
Line 717 static UINT16 boot_fd(REG8 drv, REG8 typ	Line 727 static UINT16 boot_fd(REG8 drv, REG8 typ
if (drv >= 4) {	if (drv >= 4) {
return(0);	return(0);
}	}
fdc.us = drv & 3;	fdc.us = drv;
if (!fdd_diskready(fdc.us)) {	if (!fdd_diskready(fdc.us)) {
return(0);	return(0);
}	}

// 2HD	// 2HD
if (type & 1) {	if (type & 1) {
CTRL_FDMEDIA = DISKTYPE_2HD;
// 1.25MB	// 1.25MB
bootseg = boot_fd1(0);	bootseg = boot_fd1(3, 0);
if (bootseg) {	if (bootseg) {
mem[MEMB_DISK_BOOT] = (UINT8)(0x90 + drv);	mem[MEMB_DISK_BOOT] = (UINT8)(0x90 + drv);
fddbios_equip(DISKTYPE_2HD, TRUE);	fddbios_equip(3, TRUE);
return(bootseg);	return(bootseg);
}	}
// 1.44MB	// 1.44MB
bootseg = boot_fd1(1);	bootseg = boot_fd1(3, 1);
if (bootseg) {	if (bootseg) {
mem[MEMB_DISK_BOOT] = (UINT8)(0x30 + drv);	mem[MEMB_DISK_BOOT] = (UINT8)(0x30 + drv);
fddbios_equip(DISKTYPE_2HD, TRUE);	fddbios_equip(3, TRUE);
return(bootseg);	return(bootseg);
}	}
}	}
if (type & 2) { // ver0.29	if (type & 2) { // ver0.29
// 2DD	// 2DD
CTRL_FDMEDIA = DISKTYPE_2DD;	bootseg = boot_fd1(0, 0);
bootseg = boot_fd1(0);
if (bootseg) {	if (bootseg) {
mem[MEMB_DISK_BOOT] = (BYTE)(0x70 + drv);	mem[MEMB_DISK_BOOT] = (BYTE)(0x70 + drv);
fddbios_equip(DISKTYPE_2DD, TRUE);	fddbios_equip(0, TRUE);
return(bootseg);	return(bootseg);
}	}
}	}
Line 884 void bios0x1b(void) {	Line 892 void bios0x1b(void) {

switch(CPU_AL & 0xf0) {	switch(CPU_AL & 0xf0) {
case 0x90:	case 0x90:
ret_ah = fdd_operate(DISKTYPE_2HD, 0, 0);	ret_ah = fdd_operate(3, 0, 0);
break;	break;

case 0x30:	case 0x30:
case 0xb0:	case 0xb0:
ret_ah = fdd_operate(DISKTYPE_2HD, 0, 1);	ret_ah = fdd_operate(3, 1, 0);
break;	break;

case 0x10:	case 0x10:
	ret_ah = fdd_operate(1, 0, 0);
	break;

case 0x70:	case 0x70:
case 0xf0:	case 0xf0:
ret_ah = fdd_operate(DISKTYPE_2DD, 0, 0);	ret_ah = fdd_operate(0, 0, 0);
break;	break;

case 0x50:	case 0x50:
ret_ah = fdd_operate(DISKTYPE_2DD, 1, 0);	ret_ah = fdd_operate(0, 0, 1);
break;	break;

case 0x00:	case 0x00:

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

Removed from v.1.13
changed lines
	Added in v.1.16