779 static unsigned long scan_sync(unsigned long raw, unsigned long end)  in scan_sync()  argument
781 	ushort *ptr = (ushort *)raw, *endp = (ushort *)end;  in scan_sync()
805 static unsigned long decode (unsigned long *data, unsigned long *raw,  in decode()  argument
812 	odd = raw;  in decode()
816 	raw += len * 2;  in decode()
822 	return (ulong)raw;  in decode()
837 	unsigned long raw;  in amiga_read()  local
844 	raw = (long) raw_buf;  in amiga_read()
845 	end = raw + unit[drive].type->read_size;  in amiga_read()
848 		if (!(raw = scan_sync(raw, end))) {  in amiga_read()
853 		raw = decode ((ulong *)&hdr.magic, (ulong *)raw, 4);  in amiga_read()
854 		raw = decode ((ulong *)&hdr.labels, (ulong *)raw, 16);  in amiga_read()
855 		raw = decode ((ulong *)&hdr.hdrchk, (ulong *)raw, 4);  in amiga_read()
856 		raw = decode ((ulong *)&hdr.datachk, (ulong *)raw, 4);  in amiga_read()
879 		raw = decode ((ulong *)(unit[drive].trackbuf + hdr.sect*512),  in amiga_read()
880 			      (ulong *)raw, 512);  in amiga_read()
931 static unsigned long *putsec(int disk, unsigned long *raw, int cnt)  in putsec()  argument
937 	*raw = (raw[-1]&1) ? 0x2AAAAAAA : 0xAAAAAAAA;  in putsec()
938 	raw++;  in putsec()
939 	*raw++ = 0x44894489;  in putsec()
951 	encode_block(raw, (ulong *)&hdr.magic, 4);  in putsec()
952 	raw += 2;  in putsec()
953 	encode_block(raw, (ulong *)&hdr.labels, 16);  in putsec()
954 	raw += 8;  in putsec()
955 	encode_block(raw, (ulong *)&hdr.hdrchk, 4);  in putsec()
956 	raw += 2;  in putsec()
957 	encode_block(raw, (ulong *)&hdr.datachk, 4);  in putsec()
958 	raw += 2;  in putsec()
959 	encode_block(raw, (ulong *)(unit[disk].trackbuf+cnt*512), 512);  in putsec()
960 	raw += 256;  in putsec()
962 	return raw;  in putsec()
1132 static unsigned long dos_decode(unsigned char *data, unsigned short *raw, int len)  in dos_decode()  argument
1137 		*data++=dos_decode_byte(*raw++);  in dos_decode()
1138 	return ((ulong)raw);  in dos_decode()
1153 	unsigned long raw;  in dos_read()  local
1159 	raw = (long) raw_buf;  in dos_read()
1160 	end = raw + unit[drive].type->read_size;  in dos_read()
1164 			if (!(raw = scan_sync (raw, end))) {  in dos_read()
1171 			dbg(raw);  in dos_read()
1173 		} while (*((ushort *)raw)!=0x5554); /* loop usually only once done */  in dos_read()
1174 		raw+=2; /* skip over headermark */  in dos_read()
1175 		raw = dos_decode((unsigned char *)&hdr,(ushort *) raw,8);  in dos_read()
1210 		if (!(raw = scan_sync (raw, end))) {  in dos_read()
1217 		dbg(raw);  in dos_read()
1220 		if (*((ushort *)raw)!=0x5545) {  in dos_read()
1227 		raw+=2;  /* skip data mark (included in checksum) */  in dos_read()
1228 …raw = dos_decode((unsigned char *)(unit[drive].trackbuf + (hdr.sec - 1) * 512), (ushort *) raw, 51…  in dos_read()
1229 		raw = dos_decode((unsigned char  *)data_crc,(ushort *) raw,4);  in dos_read()
1271 static unsigned long *ms_putsec(int drive, unsigned long *raw, int cnt)  in ms_putsec()  argument
1282 		*raw++=0xaaaaaaaa;  in ms_putsec()
1284 	*raw++=0x44894489;  in ms_putsec()
1285 	*raw++=0x44895554;  in ms_putsec()
1294 	dos_encode_block((ushort *)raw,(unsigned char *) &hdr.track,28);  in ms_putsec()
1295 	raw+=14;  in ms_putsec()
1299 		*raw++=0xaaaaaaaa;  in ms_putsec()
1302 	*raw++=0x44894489;  in ms_putsec()
1303 	*raw++=0x44895545;  in ms_putsec()
1306 	dos_encode_block((ushort *)raw,  in ms_putsec()
1308 	raw+=256;  in ms_putsec()
1312 	dos_encode_block((ushort *) raw,(unsigned char *)crc,4);  in ms_putsec()
1313 	raw+=2;  in ms_putsec()
1317 		*raw++=0x92549254;  in ms_putsec()
1319 	return raw; /* wrote 652 MFM words */  in ms_putsec()
1325 	unsigned long raw = (unsigned long) raw_buf;  in dos_write()  local
1326 	unsigned long *ptr=(unsigned long *)raw;  in dos_write()