--- xmil/fdd/fdd_d88.c	2004/08/04 15:18:26	1.4
+++ xmil/fdd/fdd_d88.c	2008/06/02 20:07:31	1.16
@@ -1,83 +1,37 @@
 #include	"compiler.h"
 #include	"dosio.h"
 #include	"pccore.h"
-#include	"iocore.h"
 #include	"fddfile.h"
 #include	"fdd_d88.h"
 #include	"fdd_mtr.h"
 
 
-static	D88_HEADER	d88head[4];
-static	_D88SEC		cursec;
-static	REG8		curdrv = (REG8)-1;
-static	UINT		curtrk = (UINT)-1;
-static	BYTE		curtype = 0;
-static	UINT		cursct = (UINT)-1;
-static	long		curfp = 0;
-static	UINT		cursize = 0;
-static	BYTE		curwrite = 0;
-static	BYTE		curtrkerr = 0;
-static	BYTE		hole = 0;
-static	BYTE		*curdata;
-static	UINT		crcnum = 0;
-static	BYTE		crcerror = FALSE;
-
-extern	WORD		readdiag;
-
-#define		TAO_MODE_GAP	0x4e
-#define		TAO_MODE_SYNC	0x00
-#define		TAO_MODE_AM		0xf5
-#define		TAO_MODE_IM		0xf6
-#define		TAO_MODE_ID		0xfe
-#define		TAO_MODE_DATA	0xfb
-#define		TAO_ENDOFDATA	0xf7
-
-#define		TAO_CMD_GAP		0x4e
-#define		TAO_CMD_SYNC	0x00
-#define		TAO_CMD_IM_IN	0xf6
-#define		TAO_CMD_IM		0xfc
-#define		TAO_CMD_AM_IN	0xf5
-#define		TAO_CMD_IAM		0xfe
-#define		TAO_CMD_DAM		0xfb
-#define		TAO_CMD_DDAM	0xf8
-#define		TAO_CMD_CRC		0xf7
+enum {
+	D88BUFSIZE		= 0x4000
+};
 
 typedef struct {
-	BYTE	mode;
-	BYTE	flag;
-	WORD	cnt;
-	WORD	size;
-	WORD	ptr;
-	WORD	top;
-	WORD	gap;
-	BYTE	sector;
-	WORD	lostdatacnt;
-	BYTE	maxsector;
-	WORD	maxsize;
-} WID_PARA;
-
-#define LOSTDATA_COUNT	256
-
-static	WID_PARA WID_2D	= {TAO_ENDOFDATA, 3, 0, 0, 0, 0, 0, 0, 0, 33, 0x1f80};
-static	WID_PARA WID_2HD= {TAO_ENDOFDATA, 3, 0, 0, 0, 0, 0, 0, 0, 55, 0x2f80};
-static	WID_PARA WID_ERR= {TAO_ENDOFDATA, 4, 0, 0, 0, 0, 0, 0, 0,  0, 0x0000};
-static	WID_PARA tao	= {TAO_ENDOFDATA, 4, 0, 0, 0, 0, 0, 0, 0,  0, 0x0000};
-
-static	BYTE		D88_BUF[0x4000];
-static	BYTE		TAO_BUF[0x3000];
+	FDDFILE	fdd;
+	UINT8	media;
+	UINT8	write;
+	UINT8	padding[2];
+	UINT	track;
+	long	fptr;
+	UINT	size;
+	UINT	sectors;
+	UINT8	buf[D88BUFSIZE];
+} _D88TRK, *D88TRK;
 
+static	_D88TRK		d88trk;
 
-//----------------------------------------------------------------------
 
-static UINT32 nexttrackp(D88_HEADER *head, UINT32 fptr, UINT32 last) {
+static UINT32 nexttrackptr(FDDFILE fdd, UINT32 fptr, UINT32 last) {
 
 	UINT	t;
-const DWORD	*trkp;
 	UINT32	cur;
 
-	trkp = (DWORD *)head->trackp;
 	for (t=0; t<164; t++) {
-		cur = trkp[t];
+		cur = fdd->inf.d88.ptr[t];
 		if ((cur > fptr) && (cur < last)) {
 			last = cur;
 		}
@@ -85,609 +39,473 @@ const DWORD	*trkp;
 	return(last);
 }
 
-
-int curdataflush(void) {
+static BRESULT trackflush(D88TRK trk) {
 
 	FDDFILE	fdd;
 	FILEH	fh;
-	int		ret = 0;
 
-	if ((!curfp) || (!cursize)) {
-		return(-1);
+	fdd = trk->fdd;
+	trk->fdd = NULL;
+	if ((fdd == NULL) || (trk->size == 0) || (!trk->write)) {
+		goto dtfd_exit;
 	}
-	if (!curwrite) {
-		return(0);
-	}
-	curwrite = 0;
-	fdd = fddfile + curdrv;
 	fh = file_open(fdd->fname);
 	if (fh == FILEH_INVALID) {
-		return(-1);
-	}
-	if ((file_seek(fh, curfp, FSEEK_SET) != curfp) ||
-		(file_write(fh, D88_BUF, cursize) != cursize)) {
-		ret = -1;
+		goto dtfd_err1;
 	}
-	if (file_close(fh)) {
-		ret = -1;
+	if ((file_seek(fh, trk->fptr, FSEEK_SET) != trk->fptr) ||
+		(file_write(fh, trk->buf, trk->size) != trk->size)) {
+		goto dtfd_err2;
 	}
-	return(ret);
-}
+	file_close(fh);
+	trk->write = FALSE;
 
+dtfd_exit:
+	return(SUCCESS);
 
-static DWORD read_d88track(REG8 drv, UINT track, BYTE type) {
+dtfd_err2:
+	file_close(fh);
 
-	FDDFILE	fdd;
-	FILEH	hdr;
+dtfd_err1:
+	return(FAILURE);
+}
 
-	curdataflush();
-	curdrv = drv;
-	curtrk = track;
-	curtype = type;
-	cursct = (UINT)-1;
-	curwrite = 0;
-	curtrkerr = 0;
-	crcnum = 0;
-	crcerror = 0;
+static D88TRK trackread(D88TRK trk, FDDFILE fdd, REG8 media, UINT track) {
 
-	if ((drv < 0) || (drv > 3) || (track > 163) ||
-		((type == 0) && (d88head[drv].fd_type == 0x20)) ||
-		((type == 1) && (d88head[drv].fd_type != 0x20)) ||
-		((curfp = d88head[drv].trackp[track]) == 0) ||
-		((cursize = nexttrackp(&d88head[drv], curfp,
-								d88head[drv].fd_size) - curfp) > 0x4000)) {
-		goto readd88_err;
-	}
+	FILEH		fh;
+	UINT32		fptr;
+	UINT		size;
+const _D88SEC	*sec;
+	UINT		rem;
+	UINT		maxsectors;
+	UINT		sectors;
+	UINT		secsize;
 
-	fdd = fddfile + drv;
-	if ((hdr = file_open(fdd->fname)) == FILEH_INVALID) {
-		goto readd88_err;
+	trackflush(trk);
+	if (media != (REG8)((fdd->inf.d88.head.fd_type >> 4))) {
+		goto dtrd_err1;
 	}
-	if (file_seek(hdr, curfp, FSEEK_SET) != curfp) {
-		file_close(hdr);
-		goto readd88_err;
+	if (track >= 164) {
+		goto dtrd_err1;
 	}
-	if (file_read(hdr, D88_BUF, cursize) != cursize) {
-		file_close(hdr);
-		goto readd88_err;
+	fptr = fdd->inf.d88.ptr[track];
+	if (fptr == 0) {
+		goto dtrd_err1;
 	}
-	if (file_close(hdr)) {
-		goto readd88_err;
+	size = nexttrackptr(fdd, fptr, fdd->inf.d88.fd_size) - fptr;
+	if (size > D88BUFSIZE) {
+		size = D88BUFSIZE;
 	}
-	return(TRUE);
-
-readd88_err:
-	curfp = 0;
-	cursize = 0;
-	curtrkerr = 1;
-	return(FALSE);
-}
-
-
-
-
-static int seeksector(REG8 drv, UINT track, UINT r) {
-
-static	int		lastflag = FALSE;
-
-const _D88SEC	*p;
-	UINT		sec;
-	UINT		sectors;
-	UINT		secsize;
-
-	if ((curdrv != drv) || (curtrk != track) || (curtype != fdc.media)) {
-		read_d88track(drv, track, fdc.media);
+	fh = file_open_rb(fdd->fname);
+	if (fh == FILEH_INVALID) {
+		goto dtrd_err1;
 	}
-	if (curtrkerr) {
-		cursct = r;
-		goto seekerror;
-	}
-	if (cursct != r) {
-		cursct = r;
-		p = (D88SEC)D88_BUF;
-		for (sec=0; sec<40; ) {
-			sectors = LOADINTELWORD(p->sectors);
-			secsize = LOADINTELWORD(p->size);
-			if (p->r == r) {
-				CopyMemory(&cursec, p, sizeof(_D88SEC));
-				curdata = (UINT8 *)(p + 1);
-				lastflag = TRUE;
-				break;
-			}
-			sec++;
-			if (sec >= sectors) {
-				goto seekerror;
-			}
-			p = (D88SEC)(((UINT8 *)(p + 1)) + secsize);
-		}
-		if (sec >= 40) {
-			goto seekerror;
+	if ((file_seek(fh, (long)fptr, FSEEK_SET) != (long)fptr) ||
+		(file_read(fh, trk->buf, size) != size)) {
+		goto dtrd_err2;
+	}
+	file_close(fh);
+
+	trk->fdd = fdd;
+	trk->media = media;
+	trk->write = FALSE;
+	trk->track = track;
+	trk->fptr = fptr;
+	trk->size = size;
+
+	/* セクタ数チェック */
+	sec = (D88SEC)trk->buf;
+	rem = size;
+	maxsectors = 0;
+	if (rem >= sizeof(_D88SEC)) {
+		maxsectors = LOADINTELWORD(sec->sectors);
+	}
+	sectors = 0;
+	while(sectors < maxsectors) {
+		secsize = LOADINTELWORD(sec->size);
+		secsize += sizeof(_D88SEC);
+		if (rem < secsize) {
+			break;
 		}
+		rem -= secsize;
+		maxsectors = LOADINTELWORD(sec->sectors);
+		sec = (D88SEC)(((UINT8 *)sec) + secsize);
+		sectors++;
 	}
-	return(lastflag);
+	trk->sectors = sectors;
+	return(trk);
+
+dtrd_err2:
+	file_close(fh);
 
-seekerror:;
-	ZeroMemory(&cursec, sizeof(_D88SEC));
-	curdata = &D88_BUF[16];
-	lastflag = FALSE;
-	return(FALSE);
+dtrd_err1:
+	return(NULL);
 }
 
-static void drvflush(REG8 drv) {
+static void drvflush(FDDFILE fdd) {
 
-	if (curdrv == drv) {
-		curdataflush();
-		curdrv = (REG8)-1;
-		curtrk = (UINT)-1;
-		cursct = (UINT)-1;
+	D88TRK	trk;
+
+	trk = &d88trk;
+	if (trk->fdd == fdd) {
+		trackflush(trk);
 	}
 }
 
+static D88TRK trackseek(FDDFILE fdd, REG8 media, UINT track) {
 
+	D88TRK	trk;
 
+	trk = &d88trk;
+	if ((trk->fdd != fdd) || (trk->media != media) || (trk->track != track)) {
+		trk = trackread(trk, fdd, media, track);
+	}
+	return(trk);
+}
 
-//**********************************************************************
-
-short fdd_crc_d88(void) {
+static D88SEC sectorseek(const _D88TRK *trk, REG8 r) {
 
-	UINT		track;
-const _D88SEC	*p;
-	UINT		sec;
+const _D88SEC	*sec;
 	UINT		sectors;
-	UINT		secsize;
+	UINT		size;
 
-	ZeroMemory(fdc.crc_dat, 6);
-	track = (fdc.c << 1) + fdc.h;
-	if (track >= 164) {
-		goto crcerror_d88;
-	}
-	seeksector(fdc.drv, track, fdc.r);
-	if (curtrkerr) {
-		goto crcerror_d88;
-	}
-	p = (D88SEC)D88_BUF;
-	for (sec=0; sec<crcnum;) {
-		sectors = LOADINTELWORD(p->sectors);
-		secsize = LOADINTELWORD(p->size);
-		sec++;
-		if (sec >= sectors) {
-			goto crcerror_d88;
+	sec = (D88SEC)trk->buf;
+	sectors = trk->sectors;
+	while(sectors) {
+		sectors--;
+		if (sec->r == r) {
+			return((D88SEC)sec);
 		}
-		p = (D88SEC)(((UINT8 *)(p + 1)) + secsize);
-	}
-	fdc.rreg = p->c;								// メルヘンヴェール
-	fdc.crc_dat[0] = p->c;
-	fdc.crc_dat[1] = p->h;
-	fdc.crc_dat[2] = p->r;
-	fdc.crc_dat[3] = p->n;
-	crcnum++;
-	if (p->stat) {
-		crcerror = TRUE;
+		size = LOADINTELWORD(sec->size);
+		size += sizeof(_D88SEC);
+		sec = (D88SEC)(((UINT8 *)sec) + size);
 	}
-	else {
-		crcerror = FALSE;
-	}
-	return(0);
-
-crcerror_d88:;
-	crcerror = TRUE;
-	return(1);
+	return(NULL);
 }
 
 
-BYTE fdd_stat_d88(void) {
+/* ---- */
+
+static BRESULT fileappend(FILEH fh, UINT32 ptr, UINT size) {
 
-	FDDFILE		fdd;
-	BYTE		type;
-	REG8		cmd;
-	UINT		trk;
-	BYTE		ans = 0;
-	int			seekable;
+	UINT	filesize;
+	UINT	r;
+	UINT8	work[0x400];
 
-	fdd = fddfile + fdc.drv;
-	if (fdd->type != DISKTYPE_D88) {
-		return(0x80);						// NOT READY
+	filesize = file_getsize(fh);
+	if (filesize < ptr) {
+		return(FAILURE);
 	}
-	type = fdc.type;
-	cmd = (REG8)(fdc.cmd >> 4);
-	trk = (fdc.c << 1) + fdc.h;
-	seekable = seeksector(fdc.drv, trk, fdc.r);
-	if (!fdc.r) {
-		seekable = TRUE;
+	filesize -= ptr;
+	while(filesize) {
+		r = min(filesize, sizeof(work));
+		filesize -= r;
+		file_seek(fh, ptr + filesize, FSEEK_SET);
+		r = file_read(fh, work, r);
+		file_seek(fh, ptr + filesize + size, FSEEK_SET);
+		file_write(fh, work, r);
 	}
+	return(SUCCESS);
+}
 
-	if (type == 0 || type == 1 || type == 4 ||
-		cmd == 0x0a || cmd == 0x0b || cmd == 0x0f) {
-		if (fdd->protect) {					// WRITE PROTECT
-			ans |= 0x40;
-		}
+static BRESULT writetrack(FDDFILE fdd, REG8 media, UINT track,
+													UINT8 *buf, UINT size) {
+
+	FILEH	fh;
+	UINT	i;
+	UINT32	curptr;
+	UINT32	nextptr;
+	UINT	cursize;
+	UINT	addsize;
+	UINT32	cur;
+	UINT8	ptr[D88_TRACKMAX][4];
+
+	if ((track >= D88_TRACKMAX) || (size == 0)) {
+		return(FAILURE);
 	}
-	if (type == 2 || cmd == 0x0f) {
-		if (fdc.r && cursec.del_flg) {
-			ans |= 0x20;					// RECODE TYPE / WRITE FAULT
-		}
+
+	fh = file_open(fdd->fname);
+	if (fh == FILEH_INVALID) {
+		return(FAILURE);
 	}
-	if (type == 1 || type == 2) {
-		if ((trk > 163) || (!seekable)) {
-			ans |= 0x10;					// SEEK ERROR / RECORD NOT FOUND
-		}
-		if ((!(ans & 0xf0)) && fdc.r && (cursec.stat)) {
-			ans |= 0x08;					// CRC ERROR
+	curptr = fdd->inf.d88.ptr[track];
+	if (curptr == 0) {
+		for (i=track; i>0;) {				/* 新規トラック */
+			curptr = fdd->inf.d88.ptr[--i];
+			if (curptr) {
+				break;
+			}
 		}
-	}
-	if (cmd == 0x0c) {
-		if (curtrkerr) {
-			ans |= 0x10;
+		if (curptr) {						/* ヒットした */
+			curptr = nexttrackptr(fdd, curptr, fdd->inf.d88.fd_size);
 		}
-		if (crcerror) {
-			ans |= 0x08;					// CRC ERROR
+		else {
+			curptr = D88_HEADERSIZE;
 		}
+		nextptr = curptr;
 	}
-	if (type == 1 || type == 4) {
-		if (type == 1) {					// ver0.25
-			ans |= 0x20;					// HEAD ENGAGED (X1 デハ ツネニ 1)
-			if (!fdc.c) {					// TRACK00
-				ans |= 0x04;
-			}
-		}
-		if (++hole < 8) {					// ver0.25
-			ans |= 0x02;					// INDEX
-		}
+	else {									/* トラックデータは既にある */
+		nextptr = nexttrackptr(fdd, curptr, fdd->inf.d88.fd_size);
 	}
-	else if (!(ans & 0xf0)) {
-		if ((type != 4) && (FDDMTR_BUSY)) {
-			ans |= 0x01;
-		}
-		if (type == 2) {
-			UINT secsize = LOADINTELWORD(cursec.size);
-			if ((UINT)fdc.off < secsize) {
-				ans |= 0x03; 					// DATA REQUEST / BUSY
+	cursize = nextptr - curptr;
+	if (size > cursize) {
+		addsize = size - cursize;
+		fileappend(fh, curptr, addsize);
+		fdd->inf.d88.fd_size += addsize;
+		for (i=0; i<D88_TRACKMAX; i++) {
+			cur = fdd->inf.d88.ptr[i];
+			if ((cur) && (cur >= curptr)) {
+				fdd->inf.d88.ptr[i] = cur + addsize;
 			}
 		}
-		else if ((cmd == 0x0e) && (readdiag < 0x1a00)) {
-			ans |= 0x03;
-		}
-		else if ((cmd == 0x0c) && (fdc.crc_off < 6)) {		// ver0.25
-			ans |= 0x03;
-		}
-		else if (cmd == 0x0f) {
-			if (tao.flag == 3) {
-				if (++tao.lostdatacnt > LOSTDATA_COUNT) {
-					tao.flag = 4;
-				}
-			}
-			ans |= tao.flag;
-		}
-	}
-	return(ans);
-}
-
-
-//**********************************************************************
-
-void fdd_read_d88(void) {
-						// POCO:読めなかったらレジスタを変更させない
-	if ((fdd_stat_d88() & 0xf3) == 3) {
-		fdc.data = curdata[fdc.off];
 	}
+	STOREINTELDWORD(fdd->inf.d88.head.fd_size, fdd->inf.d88.fd_size);
+	fdd->inf.d88.ptr[track] = curptr;
+	for (i=0; i<D88_TRACKMAX; i++) {
+		STOREINTELDWORD(ptr[i], fdd->inf.d88.ptr[i]);
+	}
+	file_seek(fh, 0, FSEEK_SET);
+	file_write(fh, &fdd->inf.d88.head, sizeof(fdd->inf.d88.head));
+	file_write(fh, ptr, sizeof(ptr));
+	file_seek(fh, curptr, FSEEK_SET);
+	file_write(fh, buf, size);
+	file_close(fh);
+	return(SUCCESS);
 }
 
-void fdd_write_d88(void) {
 
-	if ((fdd_stat_d88() & 0xf3) == 3) {
-		curdata[fdc.off] = fdc.data;
-		curwrite = 1;
-	}
-}
-
-BYTE fdd_incoff_d88(void) {
+/* ---- */
 
-	REG8	cmd;
-	UINT	trk;
-	UINT	secsize;
+static REG8 fddd88_seek(FDDFILE fdd, REG8 media, UINT track) {
 
-	cmd = (REG8)(fdc.cmd >> 4);
-	trk = (fdc.c << 1) + fdc.h;
-	seeksector(fdc.drv, trk, fdc.r);
-	fdc.off++;
-	secsize = LOADINTELWORD(cursec.size);
-	if ((UINT)fdc.off < secsize) {
-		return(0);
+	if (trackseek(fdd, media, track) != NULL) {
+		return(0x00);
 	}
-	fdc.off = secsize;
-	if ((cmd == 0x09) || (cmd == 0x0b)) {
-		fdc.rreg = fdc.r + 1;						// ver0.25
-		if (seeksector(fdc.drv, trk, fdc.rreg)) {
-			fdc.r++;
-			fdc.off = 0;
-			return(0);
-		}
+	else {
+		return(FDDSTAT_SEEKERR);
 	}
-	return(1);
 }
 
+static REG8 fddd88_read(FDDFILE fdd, REG8 media, UINT track, REG8 sc,
+												UINT8 *ptr, UINT *size) {
 
-// ---------------------------------------------------------------------------
-
-void init_tao_d88(void) {
+const _D88TRK	*trk;
+const _D88SEC	*sec;
+	UINT		secsize;
+	REG8		ret;
 
-	if ((fdc.media == 0) && (d88head[fdc.drv].fd_type != 0x20)) {
-		tao = WID_2D;
-	}
-	else if ((fdc.media == 1) && (d88head[fdc.drv].fd_type == 0x20)) {
-		tao = WID_2HD;
-	}
-	else {
-		tao = WID_ERR;
+	TRACEOUT(("d88 read %d:%.2x", track, sc));
+	trk = trackseek(fdd, media, track);
+	if (trk == NULL) {
+		goto fd8r_err;
+	}
+	sec = sectorseek(trk, sc);
+	if (sec == NULL) {
+		goto fd8r_err;
+	}
+	ret = 0x00;
+	if (sec->del_flg) {
+		ret |= FDDSTAT_RECTYPE;
+	}
+	if (sec->stat) {
+		ret |= FDDSTAT_CRCERR;
+	}
+	secsize = LOADINTELWORD(sec->size);
+	secsize = min(secsize, *size);
+	if ((ptr) && (secsize)) {
+		CopyMemory(ptr, sec + 1, secsize);
 	}
+	*size = secsize;
+	return(ret);
+
+fd8r_err:
+	return(FDDSTAT_RECNFND);
 }
 
-int fileappend(FILEH hdr, D88_HEADER *head,
-									long ptr, long last, long apsize) {
+static REG8 fddd88_write(FDDFILE fdd, REG8 media, UINT track, REG8 sc,
+												const UINT8 *ptr, UINT size) {
 
-	long	length;
-	WORD	size;
-	WORD	rsize;
-	int		t;
-	long	*trkp;
+	D88TRK	trk;
+	D88SEC	sec;
+	UINT	secsize;
 
-	if ((length = last - ptr) <= 0) {			// 書き換える必要なし
-		return(0);
+	TRACEOUT(("d88 write %d:%.2x", track, sc));
+	trk = trackseek(fdd, media, track);
+	if (trk == NULL) {
+		goto fd8w_err;
+	}
+	sec = sectorseek(trk, sc);
+	if (sec == NULL) {
+		goto fd8w_err;
+	}
+	secsize = LOADINTELWORD(sec->size);
+	size = min(size, secsize);
+	if (size) {
+		CopyMemory(sec + 1, ptr, size);
+		trk->write = TRUE;
+	}
+	return(0x00);
+
+fd8w_err:
+	return(FDDSTAT_RECNFND | FDDSTAT_WRITEFAULT);
+}
+
+static REG8 fddd88_wrtrk(FDDFILE fdd, REG8 media, UINT track, REG8 sc,
+												const UINT8 *ptr, UINT size) {
+
+	UINT	pos;
+	UINT	i;
+	UINT	datsize;
+	D88SEC	dst;
+
+	trackflush(&d88trk);
+
+	/* データ作る */
+	ZeroMemory(d88trk.buf, sizeof(d88trk.buf));
+	pos = 0;
+	for (i=0; i<sc; i++) {
+		dst = (D88SEC)(d88trk.buf + pos);
+		datsize = LOADINTELWORD(((TAOSEC *)ptr)->size);
+		pos += sizeof(_D88SEC) + datsize;
+		if (pos > D88BUFSIZE) {
+			goto fd8wt_err;
+		}
+		dst->c = ((TAOSEC *)ptr)->c;
+		dst->h = ((TAOSEC *)ptr)->h;
+		dst->r = ((TAOSEC *)ptr)->r;
+		dst->n = ((TAOSEC *)ptr)->n;
+		dst->sectors[0] = sc;
+		STOREINTELWORD(dst->size, datsize);
+		CopyMemory((dst + 1), ptr + sizeof(TAOSEC), datsize);
+		ptr += sizeof(TAOSEC) + datsize;
 	}
-	while(length) {
-		if (length >= 0x4000) {
-			size = 0x4000;
-		}
-		else {
-			size = (WORD)length;
-		}
-		length -= (long)size;
-		file_seek(hdr, ptr+length, 0);
-		rsize = file_read(hdr, D88_BUF, size);
-		file_seek(hdr, ptr+length+apsize, 0);
-		file_write(hdr, D88_BUF, rsize);
-	}
-
-	trkp = head->trackp;
-	for (t=0; t<164; t++, trkp++) {
-		if ((*trkp) && (*trkp >= ptr)) {
-			(*trkp) += apsize;
-		}
+	if (writetrack(fdd, media, track, d88trk.buf, pos) != SUCCESS) {
+		goto fd8wt_err;
 	}
 	return(0);
-}
-
 
+fd8wt_err:
+	return(FDDSTAT_RECNFND | FDDSTAT_WRITEFAULT);
+}
 
-void endoftrack(void) {
+static REG8 fddd88_crc(FDDFILE fdd, REG8 media, UINT track, UINT num,
+												UINT8 *ptr) {
 
-	FDDFILE		fdd;
-	FILEH		hdr;
-	int			i;
-	WORD		trk;
-	D88_HEADER	*head;
-	long		fpointer;
-	long		endpointer;
-	long		lastpointer;
-	long		trksize;
-	long		apsize;
-	D88SEC		p;
-	UINT		secsize;
+const _D88TRK	*trk;
+const _D88SEC	*sec;
+	UINT		sectors;
+	UINT		size;
 
-	if (!tao.sector) {
-		tao.flag = 4;
-		return;
-	}
-	tao.flag = 0;
-
-	curdataflush();						// write cache flush &
-	curdrv = (REG8)-1;					// use D88_BUF[] for temp
-
-	head = &d88head[fdc.drv];
-	trk = (fdc.c << 1) + fdc.h;
-
-	p = (D88SEC)TAO_BUF;
-	for (i=0; i<(int)tao.sector; i++) {
-		STOREINTELWORD(p->sectors, tao.sector);
-		secsize = LOADINTELWORD(p->size);
-		p = (D88SEC)(((UINT8 *)(p + 1)) + secsize);
-	}
-
-	fdd = fddfile + fdc.drv;
-	if ((hdr = file_open(fdd->fname)) == FILEH_INVALID) {
-		return;
-	}
-	lastpointer = file_seek(hdr, 0, 2);
-	if ((fpointer = head->trackp[trk]) == 0) {
-		fpointer = 0;								// 新規トラック
-		for (i=trk; i>=0; i--) {
-			if (head->trackp[i]) {
-				fpointer = head->trackp[i];
-				break;
-			}
-		}
-		if (fpointer) {								// ヒットした
-			fpointer = nexttrackp(head, fpointer, lastpointer);
-		}
-		else {
-			fpointer = sizeof(D88_HEADER);
-		}
-		endpointer = fpointer;
-	}
-	else {										// トラックデータは既にある
-		endpointer = nexttrackp(head, fpointer, lastpointer);
-	}
-	trksize = endpointer - fpointer;
-	if ((apsize = (long)tao.size - trksize) > 0) {
-								// 書き込むデータのほーが大きい
-		fileappend(hdr, head, endpointer, lastpointer, apsize);
-		head->fd_size += apsize;
+	trk = trackseek(fdd, media, track);
+	if (trk == NULL) {
+		return(FDDSTAT_RECNFND);
+	}
+	sec = (D88SEC)trk->buf;
+	sectors = trk->sectors;
+	if (num >= sectors) {
+		return(FDDSTAT_RECNFND);
+	}
+	while(num) {
+		num--;
+		size = LOADINTELWORD(sec->size);
+		size += sizeof(_D88SEC);
+		sec = (D88SEC)(((UINT8 *)sec) + size);
+	}
+	ptr[0] = sec->c;
+	ptr[1] = sec->h;
+	ptr[2] = sec->r;
+	ptr[3] = sec->n;
+	ptr[4] = 0;
+	ptr[5] = 0;
+#if 0
+	fdc.s.rreg = sec->c; 							/* メルヘンヴェール */
+#endif	/* 0 */
+	if (sec->stat) {
+		return(FDDSTAT_CRCERR);
 	}
-	head->trackp[trk] = fpointer;
-	file_seek(hdr, fpointer, 0);
-	file_write(hdr, TAO_BUF, tao.size);
-	file_seek(hdr, 0, 0);
-	file_write(hdr, head, sizeof(D88_HEADER));
-	file_close(hdr);
+	return(0x00);
 }
 
+#if defined(SUPPORT_DISKEXT)
+static UINT32 fddd88_sec(FDDFILE fdd, REG8 media, UINT track, REG8 sc) {
 
-void fdd_wtao_d88(BYTE data) {
-
-	D88SEC	p;
+const _D88TRK	*trk;
+const _D88SEC	*sec;
+	UINT		sectors;
+	UINT		num;
+	UINT		size;
 
-	if (tao.flag != 3) {
-		return;
-	}
-	tao.lostdatacnt = 0;
-	if (tao.cnt > tao.maxsize) {
-		endoftrack();
-		return;
+	trk = trackseek(fdd, media, track);
+	if (trk == NULL) {
+		return(0);
 	}
-	tao.cnt++;
-	switch(tao.mode) {
-		case TAO_ENDOFDATA:
-			if (data == TAO_MODE_GAP) {
-				tao.mode = TAO_MODE_GAP;
-				tao.gap = 0;
-			}
-			break;
-
-		case TAO_MODE_GAP:
-			if (data == TAO_MODE_GAP) {
-				if (tao.gap++ > 256) {
-					endoftrack();
-				}
-			}
-			else if (data == TAO_CMD_SYNC) {
-				tao.mode = TAO_MODE_SYNC;
-			}
-#if 1												// ver0.26 Zeliard
-			else if (data == 0xf4) {
-				endoftrack();
-			}
-#endif
-			else {
-				tao.flag = 4;
-			}
-			break;
-
-		case TAO_MODE_SYNC:
-//			tao.cnt--;								// ver0.26 Zeliard
-			if (data == TAO_CMD_AM_IN) {
-				tao.mode = TAO_MODE_AM;
-			}
-			else if (data == TAO_CMD_IM_IN) {
-				tao.mode = TAO_MODE_IM;
-			}
-			else if (data) {
-				tao.flag = 4;
-			}
-			break;
-
-		case TAO_MODE_IM:
-			if (data == TAO_CMD_IM) {
-				tao.mode = TAO_ENDOFDATA;
-			}
-			else if (data != TAO_CMD_IM_IN) {
-				tao.flag = 4;
-			}
-			break;
-
-		case TAO_MODE_AM:
-			if (data == TAO_CMD_IAM) {
-				tao.mode = TAO_MODE_ID;
-				tao.ptr = 0;
-				tao.top = tao.size;
-			}
-			else if (data == TAO_CMD_DAM) {
-				tao.mode = TAO_MODE_DATA;
-				tao.ptr = 0;
-			}
-			else if (data == TAO_CMD_DDAM) {
-				tao.mode = TAO_MODE_DATA;
-				tao.ptr = 0;
-				p = (D88SEC)(TAO_BUF + tao.top);
-				p->del_flg = 1;
-			}
-			break;
-
-		case TAO_MODE_ID:
-			if ((data == TAO_CMD_IAM) && (!tao.ptr)) {
-				break;
-			}
-			else if (tao.ptr < 4) {
-				TAO_BUF[tao.size++] = data;
-				tao.ptr++;
-			}
-			else if (data == TAO_CMD_CRC) {
-				tao.mode = TAO_ENDOFDATA;
-				ZeroMemory(TAO_BUF + tao.size, 12);
-				tao.size += 12;
-			}
-			break;
-
-		case TAO_MODE_DATA:						// DATA WRITE
-			if ((!tao.ptr) &&
-				((data == TAO_CMD_DAM) || (data == TAO_CMD_DDAM))) {
-				break;
-			}
-			else if (data == TAO_CMD_CRC) {			// nで判定した方が無難か？
-				tao.mode = TAO_ENDOFDATA;
-				p = (D88SEC)(TAO_BUF + tao.top);
-				STOREINTELWORD(p->size, tao.ptr);
-				if (tao.sector++ > tao.maxsector) {
-					tao.flag = 4;
-				}
-			}
-			else {
-				TAO_BUF[tao.size++] = data;
-				tao.ptr++;
-			}
+	sec = (D88SEC)trk->buf;
+	sectors = trk->sectors;
+	num = 0;
+	while(num < sectors) {
+		if (sec->r == sc) {
 			break;
+		}
+		size = LOADINTELWORD(sec->size);
+		size += sizeof(_D88SEC);
+		sec = (D88SEC)(((UINT8 *)sec) + size);
+		num++;
 	}
+	return((UINT32)(sectors << 16) + num);
 }
+#endif
 
 
-// ----
-
-BRESULT fddd88_eject(FDDFILE fdd, REG8 drv) {
-
-	drvflush(drv);
-	ZeroMemory(&d88head[drv], sizeof(D88_HEADER));
-	fdd->fname[0] = '\0';
-	fdd->type = DISKTYPE_NOTREADY;
-	return(SUCCESS);
-}
+/* ---- */
 
-BRESULT fddd88_set(FDDFILE fdd, REG8 drv, const OEMCHAR *fname) {
+BRESULT fddd88_set(FDDFILE fdd, const OEMCHAR *fname) {
 
 	short	attr;
 	FILEH	fh;
-	UINT	rsize;
+	BRESULT	r;
+	UINT8	ptr[D88_TRACKMAX][4];
+	UINT	i;
 
 	attr = file_attr(fname);
 	if (attr & 0x18) {
 		goto fdst_err;
 	}
-	fh = file_open(fname);
+	fh = file_open_rb(fname);
 	if (fh == FILEH_INVALID) {
 		goto fdst_err;
 	}
-	rsize = file_read(fh, &d88head[drv], sizeof(D88_HEADER));
+	r = (file_read(fh, &fdd->inf.d88.head, sizeof(fdd->inf.d88.head))
+											!= sizeof(fdd->inf.d88.head)) ||
+		(file_read(fh, ptr, sizeof(ptr)) != sizeof(ptr));
 	file_close(fh);
-	if (rsize != sizeof(D88_HEADER)) {
+	if (r) {
 		goto fdst_err;
 	}
-	if (d88head[drv].protect & 0x10) {
+	fdd->inf.d88.fd_size = LOADINTELDWORD(fdd->inf.d88.head.fd_size);
+	for (i=0; i<D88_TRACKMAX; i++) {
+		fdd->inf.d88.ptr[i] = LOADINTELDWORD(ptr[i]);
+	}
+	if (fdd->inf.d88.head.protect & 0x10) {
 		attr |= 1;
 	}
-	milstr_ncpy(fdd->fname, fname, NELEMENTS(fdd->fname));
 	fdd->type = DISKTYPE_D88;
 	fdd->protect = (UINT8)(attr & 1);
+	fdd->seek = fddd88_seek;
+	fdd->read = fddd88_read;
+	fdd->write = fddd88_write;
+	fdd->wrtrk = fddd88_wrtrk;
+	fdd->crc = fddd88_crc;
+#if defined(SUPPORT_DISKEXT)
+	fdd->sec = fddd88_sec;
+#endif
 	return(SUCCESS);
 
 fdst_err:
 	return(FAILURE);
 }
 
+void fddd88_eject(FDDFILE fdd) {
+
+	drvflush(fdd);
+}
+