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jamin
Senior Member
 
jaminªº¤jÀY·Ó
 

¥[¤J¤é´Á: Dec 2002
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§@ªÌcmwang
ÃZ²qFLASH controller¤º«Øªºreallocateªº¾÷¨î·|¤£·|´N¬O§âcounter/mappingµ¥¸ê°Tªþ¥[¦b¨C­Óblock¤W°Ú(i.e.­Yuser¬Ý¨ìªº¬O512bytes/block,¥i¯à¥t¥~ªþ¥[¼Æ¤Qbyte§@ECC/counter/mappingµ¥¥Î³~¦buser¬Ý¤£¨ìªº³¡¥÷ )....

'mapping" ³o³¡¤À§Ú¤@ª½·Q¤£³q
²z½×¤W, mapping table »Ý­n maintain, FLASH controller À³¸Ó¨S¦³¨¬°÷ªº°O¾ÐÅé(¦³¶Ü?)¥iº¡¨¬³o³¡¤À»Ý¨D.
¦b¨S¦³¨Ï¥Î±M¬° flash device ³]­pªº file system (ex:FAT16) ªº±¡ªp¤U,
µwºÐ°_©l¦ì¸m, ©Î¬O»¡, °O¿ýÀɮצì¸mªº index table ªº°Ï¶ô, À³¸Ó«Ü®e©ö°}¤`¤~¬O.
     
      
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ÂÂ 2007-07-26, 10:22 PM #51
¦^À³®É¤Þ¥Î¦¹¤å³¹
jaminÂ÷½u¤¤  
chlang
Master Member
 
chlangªº¤jÀY·Ó
 

¥[¤J¤é´Á: Dec 2001
¤å³¹: 1,747
¦pªG¹ï©ó "Flash ¦p¦óÅý¨t²Î§â¥¦·í¦¨¬O¤@ÁûµwºÐ, ¦Ó¥i format ¦¨¦UºØ FS" ªº¸Ü, ½Ð°Ñ¦Ò

http://esslab.tw/wiki/index.php/NFTL

(µù: ¦¹¤å³¹¨S¦³°Q½×¨ì wear-leveling algorithm ªº³¡¤À, ¦Ó¶°¤¤¦b re-mapping ¤W­±)
¤Þ¥Î:
¦]¬°flashªº¯S©Ê¡A¬OµLªk­«½Æ¼g¦P¤@¶ô°O¾ÐÅé¦ì¸m°µ¼g¤Jªº°Ê§@¡A¥²¶·¨Æ¥ýerase¸Ó¶ô°O¾ÐÅé¦ì¸m¡]±N¨ä¥R¹q¡^¤~¯à¦A°µ¼g¤Jªº°Ê§@¡A¦]¦¹¤@¯ë§Ú­Ì©Ò¨Ï¥ÎªºÀɮרt²Î¡A¦pFAT16¡BFAT32¡BNTFS¡Bext2µ¥¡K¡A±NµLªkª½±µ¥Î¦bflash memory¤W¡C­Y§Ú­Ì·Q­nªu¥Î³o¨ÇÀɮרt²Î¡A«h¥²¶·³z¹L¤@¼hTranslation Layer¨Ó±NLogical Block Address¹ïÀ³¨ì¹êÅ骺flash memoryªº¦ì¸m¡A¨Ã³z¹L¤@¨Ç¾÷¨î¯àÅý¨t²Î¯à§âflash memory·í§@¤@¯ëªºµwºÐ¤@¼Ë³B²z¡A§Ú­ÌºÙ³o¼h¬°FTL¡]Flash Translation Layer¡^
 
ÂÂ 2007-07-27, 02:24 AM #52
¦^À³®É¤Þ¥Î¦¹¤å³¹
chlangÂ÷½u¤¤  
chaotommy
Elite Member
 

¥[¤J¤é´Á: Mar 2003
±zªº¦í§}: Vancouver, Canada
¤å³¹: 15,006
¤Þ¥Î:
§@ªÌcmwang
³oÃþFLASH controller³q±`³£¸¹ºÙ¦³auto reallocateªº¾÷¨î,¤£¹L®ÄªG¦p¦ó´N­n¬Ý¦³¨S¦³¤£©È¦ºªº¥ý½å¥ý¯P´£¥X¹êÅç³ø§i¤F....

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ÂÂ 2007-07-27, 03:28 AM #53
¦^À³®É¤Þ¥Î¦¹¤å³¹
chaotommyÂ÷½u¤¤  
cmwang
Elite Member
 

¥[¤J¤é´Á: May 2002
±zªº¦í§}: ªO¾ô
¤å³¹: 5,107
¤Þ¥Î:
§@ªÌchaotommy
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ÃZ¥u¹ï¦p¦óÀ£º^¾÷¾¹¦³¿³½ì,¹ï¦p¦ó·dÃa¾÷¾¹ªº¿³½ì¤£¤j,¤£¹L¬JµM¦³¤H³o»ò»¡¤F,ÃZ«Ü¼Ö·NÃÙ§U¨â±i¦³¦P¼Ë¤ò¯fªºÃø¥SÃø§Ìµ¹·Q·í¥ý½å¥ý¯PªÌª±ª±----¬°Ô£»¡¬OÃø¥SÃø§Ì©O ....¦]¬°³o¨â±iCFÁöµM¬O¤£¦PµP¤lªº,¦ý«o¦³µÛ¤@¼Ò¤@¼Ëªº¤ò¯f----¤j¶qŪ¼g®Écontroller¤@¼Ë·|crash´Nºâ¤F,³s¦¹®É¤£­npower off,ª½±µreset«áBIOS¤]°»´ú¤£¨ì¨ä¦s¦b¤]®í³~¦PÂk(¬Ý¨ÓùØ­±¥ÎªºcontrollerÀ³¸Ó¬O¦P¤@¨t¦Cªº....BTW,¯u­n¸Õªº¤H¥i¯àÁÙ¨S§â¥¦­Ì·d¦º´N·|¥ý³Qcontroller·í¾÷¦Û½Ãªº¯S²§¥\¯àµ¹¥´±Ñ¤F§a ),¹ê¦b¬O¥OÃZ³Ú¯º¬Ò«D....



¥H¤U¬OÃZ³o´X¤Ñ«÷©RSM¨º±i8GB CFªºµ²ªG(¥]¬Aª½±µ¦b¤W­±ÄéOS )....¦Ü¤Ö¨ì¥Ø«e¬°¤îcontrollerÁÙ¨S·í¾÷µ¹ÃZ¬Ý¹L,¬Ý¨Ó´«controllerªGµM¬O¸Ñ¨M°ÝÃD³Ì¹ý©³ªº¤èªk ....

1:ext2fs´ú¸Õµ²ªG

2:ext3fs´ú¸Õµ²ªG

3:reiserfs´ú¸Õµ²ªG

4:FAT32´ú¸Õµ²ªG

´ú¸Õ¾÷¾¹¬OX2 3800+2GB RAM,©Ò¥Hbonnie++·|¶}4GBªºtest file,mount®É³£¦³«ü©wnoatime....BTW,FAT32¬Ý¨Ó»á¥O¤H¬y¦½,¤£ª¾¯u¬OFAT32¥ý¤Ñ¤£¨}ÁÙ¬Olinux¹ïFAT32ªº¤ä´©ªº°ÝÃD ....

¥H¤U¹ï·Ó²Õ¬O¦bHµPSATA2 7200rpm 250GB HD¤W¶]¥X¨Óªº....

1:reiserfs´ú¸Õµ²ªG

2:reiserfs,¦ýmount®É«ü©wnoatimeªº´ú¸Õµ²ªG

¦¹¤å³¹©ó 2007-07-27 04:13 PM ³Q cmwang ½s¿è.
ÂÂ 2007-07-27, 04:08 PM #54
¦^À³®É¤Þ¥Î¦¹¤å³¹
cmwangÂ÷½u¤¤  
jamin
Senior Member
 
jaminªº¤jÀY·Ó
 

¥[¤J¤é´Á: Dec 2002
¤å³¹: 1,370
¤Þ¥Î:
§@ªÌchlang
¦pªG¹ï©ó "Flash ¦p¦óÅý¨t²Î§â¥¦·í¦¨¬O¤@ÁûµwºÐ, ¦Ó¥i format ¦¨¦UºØ FS" ªº¸Ü, ½Ð°Ñ¦Ò

http://esslab.tw/wiki/index.php/NFTL

(µù: ¦¹¤å³¹¨S¦³°Q½×¨ì wear-leveling algorithm ªº³¡¤À, ¦Ó¶°¤¤¦b re-mapping ¤W­±)


³o³¡¤À¤ñ¸û¤£ÃøÀ´, ¦]¬° linux ¦³¥Î RAM °O¿ý mappimg table,
¤ñ¸û¯«©_ªº¬O CF card ³o³¡¤À,
¬Y¨Ç¨Ç¼Æ¦ì¬Û¾÷¬O¥Î CF card ·íÀx¦s´C¤¶, ¥Îªº¦h¬O FAT16 or FAT32(¦n¹³¤ñ¸û¤Ö¨£)
¨C©ç¤@±i·Ó¤ù, ²Ä¤@­Ó block ´N±o§ó·s¤@¦¸ ³o¼Ëª± CF card ¹Ø©RÀ³¸Ó·|¤j¤jÁY´î¤~¹ï
¤£¹L¦n¹³¨SÅ¥¨ì¦³¤H©ê«è CF card ¤Óµu©R
__________________
­n°Q½×¤]­n§ä¯à·¾³qªº, ¸ò¨g§pªºª¯·¾³q¥u¬O®ö¶O®É¶¡. ¨C¤é¤@¥y : «Ü¦h¤£µ¥©ó¦h¼Æ¡A¤]¤£µ¥©ó¤Ö¼Æ
ÂÂ 2007-07-27, 11:50 PM #55
¦^À³®É¤Þ¥Î¦¹¤å³¹
jaminÂ÷½u¤¤  
chlang
Master Member
 
chlangªº¤jÀY·Ó
 

¥[¤J¤é´Á: Dec 2001
¤å³¹: 1,747
1. °²³] ¦b¨S¦³ ¥ô¦ó wear leveling ªº»²§U¤§¤U. ¨C¦¸¼g¤J¤@­Ó·sÀÉ®×, FAT ´N­n§ó·s¤@¦¸
==> ¦P¤@±i°O¾Ð¥d¼g¤J 10 ¸U±i¬Û¤ù´N·´¤F ?
¦pªG¨C¤Ñ©ç¤@¦Ê±i => ³o±i°O¾Ð¥dªº¹Ø©R¬O 100000/100 = 1000 ¤Ñ. ¦Ü¤Ö¦³±µªñ¤T¦~ªº¹Ø©R.


2. ¤£±Æ°£¼Æ¦ì¬Û¾÷¦b¼g¤J®É, ¤]¦³°w¹ï³o­Ó¦æ¬°§@½Õ¾ã. (¬Û¾÷¸Ì­±ªº¹Bºâ¸ê·½«Ü°÷, °O¾ÐÅé¤Ö»¡¤] 64MB °_¸õ, ÀH«K®³¤@ÂIÂI¨Ó§@³o¨ÇÀ³¸Ó¤£§xÃø)

3. ±N³o¨Çºtºâªk¤º«Ø¨ì¨t²Î¤¤, ¬Ý°_¨Ó¨Ã¤£¬O¤£¥i¦æ, ¦Ü¤Ö²{¦b³s SD ¥d³£¸¹ºÙ¦³³oºØ¥\¯à¤F
http://www.apacer.com.tw/tw/product...rd_features.htm
ÂÂ 2007-07-28, 01:00 AM #56
¦^À³®É¤Þ¥Î¦¹¤å³¹
chlangÂ÷½u¤¤  
jamin
Senior Member
 
jaminªº¤jÀY·Ó
 

¥[¤J¤é´Á: Dec 2002
¤å³¹: 1,370
¤Þ¥Î:
§@ªÌchlang
1. °²³] ¦b¨S¦³ ¥ô¦ó wear leveling ªº»²§U¤§¤U. ¨C¦¸¼g¤J¤@­Ó·sÀÉ®×, FAT ´N­n§ó·s¤@¦¸
==> ¦P¤@±i°O¾Ð¥d¼g¤J 10 ¸U±i¬Û¤ù´N·´¤F ?
¦pªG¨C¤Ñ©ç¤@¦Ê±i => ³o±i°O¾Ð¥dªº¹Ø©R¬O 100000/100 = 1000 ¤Ñ. ¦Ü¤Ö¦³±µªñ¤T¦~ªº¹Ø©R.


2. ¤£±Æ°£¼Æ¦ì¬Û¾÷¦b¼g¤J®É, ¤]¦³°w¹ï³o­Ó¦æ¬°§@½Õ¾ã. (¬Û¾÷¸Ì­±ªº¹Bºâ¸ê·½«Ü°÷, °O¾ÐÅé¤Ö»¡¤] 64MB °_¸õ, ÀH«K®³¤@ÂIÂI¨Ó§@³o¨ÇÀ³¸Ó¤£§xÃø)

3. ±N³o¨Çºtºâªk¤º«Ø¨ì¨t²Î¤¤, ¬Ý°_¨Ó¨Ã¤£¬O¤£¥i¦æ, ¦Ü¤Ö²{¦b³s SD ¥d³£¸¹ºÙ¦³³oºØ¥\¯à¤F
http://www.apacer.com.tw/tw/product...rd_features.htm


³o¥÷¤å¥ó²Ä6­¶¸Ñ¨M§ÚªººÃ´b
http://www.sst.com/downloads/datasheet/S71298.pdf

¥t¥~, §Ú»{¬°¼Æ¦ì¼Æ¦ì¬Û¾÷À³¸Ó¤£·|°µ wear level, ¦]¬°¼Ð·Ç FAT16 ªºÀɮרt²Î,
¼g¤J¤è¦¡¬O©T©wªº, ³»¦h°µ memory buffer ´î¤Ö¼g¤J¦¸¼Æ.

µ²½×¬O, ¥Î¤Oµ¹¥L¼g, ¤£­n«È®ð
__________________
­n°Q½×¤]­n§ä¯à·¾³qªº, ¸ò¨g§pªºª¯·¾³q¥u¬O®ö¶O®É¶¡. ¨C¤é¤@¥y : «Ü¦h¤£µ¥©ó¦h¼Æ¡A¤]¤£µ¥©ó¤Ö¼Æ
ÂÂ 2007-07-28, 01:48 AM #57
¦^À³®É¤Þ¥Î¦¹¤å³¹
jaminÂ÷½u¤¤  
cmwang
Elite Member
 

¥[¤J¤é´Á: May 2002
±zªº¦í§}: ªO¾ô
¤å³¹: 5,107
¤Þ¥Î:
§@ªÌjamin
snipped....
¥t¥~, §Ú»{¬°¼Æ¦ì¼Æ¦ì¬Û¾÷À³¸Ó¤£·|°µ wear level, ¦]¬°¼Ð·Ç FAT16 ªºÀɮרt²Î,
¼g¤J¤è¦¡¬O©T©wªº, ³»¦h°µ memory buffer ´î¤Ö¼g¤J¦¸¼Æ.


wear level³q±`¬Oflash controllerªº¨Æ(wether SD or CF,¦Ü©óMicro DriveÀ³¸Ó´N¨S³o¦^¨Æ§a ),¤j·§¤£¶·­nDC´¡¤â´N¬O¤F....

¤Þ¥Î:
§@ªÌjamin
µ²½×¬O, ¥Î¤Oµ¹¥L¼g, ¤£­n«È®ð


¶¶«K¶K­Ó¦bCF¤W¶]XPªº¿ý¼v¦n¤F,¥H¤W­±¨º¥xX2 3800+2GB RAM+8GB CF-IDE(¶]UDMA4)±qpower on¨ì¯à¾Þ§@¬ù30¬í(­Y¦ÛPOST§¹¶}©lboot®Éºâ¬ù15¬í),¤£ª¾ºâ§ÖÁÙ¬OºC....
ÂÂ 2007-07-28, 09:48 PM #58
¦^À³®É¤Þ¥Î¦¹¤å³¹
cmwangÂ÷½u¤¤  
chlang
Master Member
 
chlangªº¤jÀY·Ó
 

¥[¤J¤é´Á: Dec 2001
¤å³¹: 1,747
¬ðµM·Q¨ì¥t¥~¤@­Ó°ÝÃD.

³o¨Ç SSD ªºµwºÐ, ·|¤£·|´£¨Ñ¤@­Ó SMART ªº¸ê°T: "³Ì®tªº¤@­Ó°Ï¶ô¤w¸g³Q¼g¤J´X¦¸, ÁٳѤU´X¦¸"
ÂÂ 2007-08-12, 01:31 AM #59
¦^À³®É¤Þ¥Î¦¹¤å³¹
chlangÂ÷½u¤¤  
coolbrother
Major Member
 
coolbrotherªº¤jÀY·Ó
 

¥[¤J¤é´Á: Nov 2001
±zªº¦í§}: ¥xÆW¬Ù®ç¶é¿¤¤¤Ãc¥«
¤å³¹: 285
¤Þ¥Î:
§@ªÌchlang
¬ðµM·Q¨ì¥t¥~¤@­Ó°ÝÃD.
³o¨Ç SSD ªºµwºÐ, ·|¤£·|´£¨Ñ¤@­Ó SMART ªº¸ê°T: "³Ì®tªº¤@­Ó°Ï¶ô¤w¸g³Q¼g¤J´X¦¸, ÁٳѤU´X¦¸"

FLASH ¤£·|¨º»ò·ÓµÛ³W«h¨Óªº¡A¥L·Q±¾ªº®É­Ô´N·|±¾±¼¤F~~
ÂÂ 2007-10-11, 02:05 AM #60
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coolbrotherÂ÷½u¤¤  


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