3879twf.doc/006 A7 ____________B7_ 五、發明説明（/) 本發明是有關於一種光碟系統，且特別是有關於一種 光碟系統之控制技術。 第1圖係繪示一種慣見的光碟機系統(CD-ROM)。光碟 片100上所儲存的資料係經由光學讀取頭（optlc pickup head)102來讀取。資料經射頻放大控制器(RF ampHfier and controller) 110處理後，在經過解碼器114加以解碼，所 得的解碼後的資料便儲存在緩衝記憶體(buffer memory) 116 中。控制上述之頻放大控制器110、解碼器114與驅動光 碟片100的馬達以及讀取資料的讀取頭係由一微處理器 (micro processor) 112來加以控制處理，此微處理器控制了 光碟系統的所有操作與功能。微處理器112則耦接至一記 憶體(R0M)118，其中儲存了給微處理器112要進行對光碟 系統之控制與操作的指令、命令、程式與資料等韌體 (firmware)資訊。使用者便可以經由電腦122透過一主機界 面120來讀取緩衝記憶體116中所儲存的資料。 近年來電腦工業發展迅速，其連帶的硬體週邊也跟隨 快速地發展，更遑論光碟系統（CD-ROM)。因此必須要有 一種方法能迅速地更新系統記憶體中的韌體資訊。習知的 技藝，再進行韌體程式更新時，均把更新程式的執行與程 式資料均放在系統的唯讀記憶體(ROM)中。這造成R〇M可 以使用的空間降低，更增加韌體更新程式的執行時間。 因此本發明的目的就是在提供一種光碟系統控制晶 片，利用晶片中額外的記憶體，使得在執行更新程式時， 不會佔用唯讀記憶體的空間，更可以加速韌體程式的更新 3 本紙張尺度適ΪΪΓ中國國家標準（CNS ) A4规格（210X297公釐） (誚先閲讀背面之注意ί項再硪寫本頁) -裳. 订 •線 3879twf.doc/006 A7 B7 此裝 五、發明说明（）） 時間。 本發明的目的就是在提供一種光碟系統靭體梅4 . 珥的窜3879twf.doc / 006 A7 ____________B7_ V. Description of the Invention (/) The present invention relates to an optical disc system, and in particular to a control technology of an optical disc system. FIG. 1 shows a conventional CD-ROM system. The data stored on the optical disc 100 is read via an optical pickup head 102. After the data is processed by the RF amplier and controller 110, it is decoded by the decoder 114, and the decoded data obtained is stored in the buffer memory 116. A micro processor 112 is used to control the frequency amplification controller 110, the decoder 114, the motor driving the optical disc 100, and the reading head for reading data. The microprocessor controls the optical disc. All operations and functions of the system. The microprocessor 112 is coupled to a memory (ROM) 118, which stores firmware information such as instructions, commands, programs and data for the microprocessor 112 to control and operate the optical disc system. The user can read the data stored in the buffer memory 116 through a host interface 120 through the computer 122. In recent years, the computer industry has developed rapidly, and its associated hardware peripherals have also developed rapidly, not to mention the optical disc system (CD-ROM). Therefore, there must be a way to quickly update the firmware information in the system memory. In the conventional technique, when the firmware program is updated, the execution program and program data of the update program are placed in the read-only memory (ROM) of the system. This reduces the space available for ROM and increases the execution time of the firmware update program. Therefore, the object of the present invention is to provide an optical disk system control chip, which utilizes additional memory in the chip, so that it does not occupy the space of the read-only memory when executing the update program, and can further accelerate the firmware program update Appropriate dimensions: Chinese National Standard (CNS) A4 specification (210X297 mm) (read the note on the back first and then write this page) -Shang. Order • Thread 3879twf.doc / 006 A7 B7 ()) Time. The object of the present invention is to provide an optical disc system firmware 4.
新方法，使得在執行更新程式時，可以減少韌體程X 新時間。 爲達本發明上述與其他之目的，提出一種裝_， 置之簡述如下_· 本發明揭露一種光碟系統控制晶片，其可以用來_ 光碟系統的程式。此控制晶片至少具有微處理器、解 控制器、與額外記憶體(extra memory)。微處理器係|禹接 匯流排，微處理器更耦接到外部一用以存放系統韌 的一唯讀記憶體。解碼器則經由匯流排耦接到微處 並且耦I接到外部的緩衝記憶體(buffer memory)與主機 (interface)，藉由主機界面可以與—電腦進行溝通。执 <制器 耦接到解碼器，且經由匯流排耦接到微處理器，控制器 用以接收光碟系統之控制訊號與資料。額外記憶體輕由係 流排耦接到微處理器。當微處理器要求執行更新該光碟® 統的程式時’微處理便至少產生一輸出致能訊號、〜s系 _ 日曰片 選擇訊號與一寫入訊號給唯讀記憶體，並且將唯讀 只叱噫體 轉爲一資料儲存空間’而額外記憶體轉爲程式執行空間。 前述之緩衝記億體可以爲一般之動態隨機存取記憶體，而 唯讀記憶體則可爲是快閃式唯讀記憶體(flash ROM)或電性 可抹除可編碼唯讀記憶體(EEPROM)。 配合本發明之裝置’同時亦提出額外記憶體的位址配 置方法，使得在進行程式更新時，欲寫入之程式資料碼與The new method makes it possible to reduce the firmware X new time when executing the update program. In order to achieve the above and other objectives of the present invention, a device is provided, which is briefly described as follows. The present invention discloses an optical disk system control chip, which can be used for a program of the optical disk system. The control chip has at least a microprocessor, a solution controller, and extra memory. The microprocessor is connected to the bus. The microprocessor is further coupled to an external read-only memory to store the system's toughness. The decoder is coupled to the micro via the bus and is connected to the external buffer memory and the host interface. The host interface can communicate with the computer. The controller is coupled to the decoder and is coupled to the microprocessor via a bus. The controller is used to receive control signals and data from the optical disc system. The extra memory is coupled to the microprocessor by the bus. When the microprocessor asks to execute the program to update the CD-ROM system, the 'micro processing' generates at least an output enable signal, ~ s__ Japanese film selection signal and a write signal to the read-only memory, and the read-only memory Only the carcass becomes a data storage space 'and the extra memory becomes a program execution space. The aforementioned buffer memory can be a general dynamic random access memory, and the read-only memory can be a flash read-only memory (flash ROM) or an electrically erasable and codeable read-only memory ( EEPROM). In conjunction with the device of the present invention, an address allocation method of additional memory is also proposed, so that when the program is updated, the program data code to be written and the
本紙張尺；1適财關家财*(CNS) A4_ (210x297公D ---^-I,,---,----1------訂------線 f"1閱讀背面之注意事^再續巧本頁」 紂浐部中戎i!'i?-x,Jh-T消於合竹私卬欠 3879twf.doc/〇〇6 A7 _B7____ 五、發明说明（3) 更新程式指令細緻放在不同的區段。如前所述之資料部分 係透過緩衝記憶體寫入唯讀記憶體中，負責執行的程式指 令則置放在額外記憶體中。因此，彼此不會佔據空間，更 能增加程式更新的速度。 此外在本發明中，藉由一更新序等待器(refresh queue)， 其設計成具有較大的更新序列等待緩衝量。因此，在進行 •唯讀記憶體之資料更新時，不會受到記憶體更新動作的影 響而減慢更新時間。 爲讓本發明之上述目的、特徵、和優點能更明顯易懂， 下文特舉一較佳實施例，並配合所附圖式，作詳細說明如 下： 圖式之簡單說明： 第1圖繪示光碟系統的架構圖； 第2圖繪示依照本發明光碟系統之系統控制晶片組與 週邊的方塊個； 第3A圖繪示依照本發明之光碟系統在一般情形下， 快閃記憶體與額外記憶體的記憶體配置圖； 第3B圖依照本發明之光碟系統在更新程式的情形下， 快閃記億體與額外記憶體的記憶體配置圖； 第4圖繪示快閃記憶體的資料結構與控制訊號的時序 圖； 第5圖繪示微處理器與快閃記憶體間之控制訊號架構 圖； 第6圖繪示光碟系統之韌體程式更新的診斷流程圖； 5 本紙張尺度通州中國國家標準（CNS ) A4規格（210X297公釐） 1ΊΙ.---r-----裝------訂-----—線 (誚先閲讀背面之注意事項再填寫本頁) 3879twf.doc/006 A7 B7 發明説明（y) 以及 第7圖繪示繪示光碟系統中韌體程式更新的執行流程 圖 標號說明： 100碟片 102光學讀取頭 110射頻放大控制器 112微處理器 114解碼器 116緩衝記憶體 118唯讀記憶體 120主機界面 122電腦 130類比數位轉換器 200光碟系統控制晶片 202額外記憶體 206解碼器 209交換電路 212緩衝記憶體 204微處理器 208控制器 210快閃式ROM 214主機界面 經"·.部中头"-^^h-T消抡合作.衫卬妃 216電腦 300〜320韌體更新診斷流程步驟 322〜470韌體更新程式零誠步驟 實施例 本發明提出一種能夠快速更新光碟系統記憶體中韌體 程式(firmware)的方法，其不論對製造廠商或使用客戶均可 以非常輕易且快速地將韌體程式加以更新。 s靑梦考弟2圖，本發明之光碟系統控制晶片（SyStem control chipset) 200 ’其用來更新光碟系統的韌體程式，系 本紙張尺度迠州中囡國家標準（CNS ) A4说格（2丨0X297公瘦） I.；-------------裝------訂------d 線 '/· (銪先閲讀背面之注意事項再瑣艿本頁) 3879twf.doc/oog A7 B7 #沪部中i);ir.4'-’而U.T消於合竹扣印*,'!水 五、發明説明（ίΓ) 統韌體程式係儲存於記憶體210中，其可以是快閃式唯讀 記憶體（flash ROM)或是電性可抹除可編碼唯讀記憶體 (EEPROM)。控制晶片200包括一額外記億體（extra RAM)202、一微處理器204、一解碼器206與一控制器208。 此額外記憶體202是習知光碟系統的控制晶片所沒有的。 如圖所示’微處理器204耦接到額外記憶體202、解碼器 206、控制器208與記憶體210,藉以直接控制解碼器206、 控制器208與直接存取額外記憶體202與記憶體210。解 碼器206與控制器208則彼此耦接。控制器208用以接收 由外部所輸入之控制訊號與資料，如來自射頻控制器11〇 之訊號與來自碟片100的資料。解碼器206則轉接到—外 部的緩衝記憶體212,其可爲一種動態隨機存取記憶體 (DRAM)，並且可透過一主機界面214與一主機電腦216互 相溝通。主機界面可以爲IDE界面、加強型IDE界面 (enhanced-IDE)，或是 SCSI 界面等。 系統在正常模式’即不需要更新系統韌體程式時，微 處理器204會經由匯流排讀取快閃記憶體21〇中的資料， 快閃記憶體210此時係作爲系統程式的儲存記憶空間，存 放所有用來控制光碟系統的所有指令功能，並且^用額外 的記憶體202來作爲資料的記憶空間。 一般而言，在電腦開機重置後，光碟系統的微處理器 204會將光碟機，如CD_R〇m，加以啓始化，並且等待主 機電腦216的IDE命令要求從碟片10〇中讀取資料。當主 電腦216要求讀取碟片1〇〇資料的命令發出後，微處理器 --1J---.----裝------訂-----彳線 (誚先閱讀背面之注意事項再蛾寫本頁) 3879twf.doc/〇〇6 A7 B7 五、發明説明（6〉 204便送出正確的參數來控制控制器208與解碼器206，用 以驅動光碟系統中的馬達與光學讀取頭來讀取碟片100所 儲存的資料。碟片100的資料便經由解碼器206加以解碼 與誤差修正（error correction)後，放入緩衝記憶體（DRAM)212 中。因此，電腦216便可以透過IDE界面214，經由解碼 器206來讀取放在緩衝記憶體212中的資料。此時，額外 記憶體202是用來作爲一般資料的記憶空間，而快閃記憶 體210是做爲系統程式的記憶空間。請參考第3A圖，其 繪示快閃記憶體210與額外記憶體202的記憶體配置圖。 當光碟系統需要更新快閃記憶體210中的韌體程式指 令（instruction)時，具有如內容表（Table Of Content，T0C)之 特殊格式資料的更新程式，可以以碟片方式放置在光碟系 統中，或者是由主電腦216端執行某一特定的更新程式軟 體。程式內容包含一程式碼（program code)與一更新程式 (update program routine)。此時，額外記憶體202將用來放 置從碟片100或由電腦216端載入的更新程式，程式碼部 分則先儲放在緩衝記憶體(DRAM)212中。 微處理器204從額外記憶體202讀取更新程式的指令 並且加以執行，於是，在緩衝記憶體212中的程式碼資料 就被依序寫入快閃記憶體210中。快閃記憶體210係作爲 程式碼的資料記憶空間，並且與放在緩衝記憶體212中的 資料進行比對。在對快閃記憶體210寫入資料後，快閃記 憶體210會輸出一指示旗標（indicator flag)給資料匯流排 (data bus)，用來指示目前快閃記憶體210的狀態，處理器 本紙张X度適州中®國家梯芈（CNS) A4規格（2〗ox297公们 — ^--------------裝------訂-----線 (誚1閲讀背面之注意事項再读寫本I ) 3879twf.doc/〇〇6 A7 B7 五、發明说明（q) 202藉此可以獲知更新程序是在進行中或是已經完成。如 第4圖所示，其。當輸出致能(output enable，OE)訊號轉爲 高準位，而寫入訊號(WR)開始轉爲低準位時，快閃記憶體 210開始寫入資料，而當WR轉爲高準位時，結束寫入機 制，並且輸出快閃記憶體的程式狀態。 一般的快閃記憶體編碼寫入模式至少有兩種：一種是 一次一位元組(byte by byte)的方式，而另一種爲一次一頁 (page by page)的方式。一般而言，一頁係128位元組。 假如快閃記憶體210的輸出狀態表示能在進行更新程 序時，微處理器204將保持等待狀態，直到下一位元組或 下一頁資料可以在被寫入。此程序會持續到所有放置在緩 衝記憶體212中的所有程式碼資料寫入到快閃記憶體210 後才會結束。此時，光碟系統中快閃記憶210的韌體更新 程序便完成。 在快閃記憶體210的編碼寫入過程中，有些位址的記 憶體是被保留的，如第3B圖中的F880h〜FFFFh位址。這 部分的記憶體是不會被讀取也不會被寫入的，其用來避免 快閃記憶體210因任何理由而被編碼不完全。 請參考第5圖，在緩衝記憶體212載入程式碼資料而 額外記憶體載入更新程式後，微處理器204會跳到某〜特 定位址，如第3B圖的F880h，此位址是由額外記憶體2〇2 所映射到的，用以更新快閃記憶體2丨0的程式碼。微處理 器204會對光碟系統產生一指示旗標給切換電路（swita circuit)209，用以切換到編碼寫入模式。此時，快閃記憶 本紙张尺度適疋中囤囤家；^^(：阳）八4規格（210\297公釐） J„---.----裝------订-----W線 ("先閱讀背面之注意事項與頊寫本寅) 3879twf.doc/006 A7 B7 經沪部屮决打準^Μ-Τίνί贽AD竹杉印欠 五、發明说明（》） 體210會切換爲程式碼資料記憶空間，並且微處理器204 會從額外記憶體202中的指令堆疊中，從最高位址開始讀 取與執行。緩衝記憶體212中的資料仍舊經由解碼器2〇6 來存取。交換電路209藉由微處理器204的控制產生用以 控制快·閃記憶體210的控制訊號’如晶片選擇訊號（chip select ’ CS)、寫入致能訊號（write enable，WE)以及輸出致 能訊號（output enable，OE)等。 接著將配合第6圖與第7圖之流程圖說明本發明光碟 系統中韌體程式更新的控制流程。 請參考第6圖，。首先，在流程300，先將電腦開機 重置，接著電腦會執行310，將光碟系統加以啓始化 (imtiaHzaUon)。之後，便進行判斷320，當要求對光碟系 統之韌體程式加以更新時，便執行322的韌體更新程式； 而當此光碟系統的韌體不需要更新時，便如流程330，以 原先儲存於系統記憶體中的韌體程式來執行所有光碟系統 的操作、功能與指令。 當製造商或用戶要求對光碟系統之韌體程式加以更新 時，便執行上述流程322的韌體更新程式。韌體更新程式 的來源可以是儲存於碟片中的更新程式，或是可以有使用 者由電腦經由主機界面將更新程式下載入光碟系統中’如 前述之系統控制晶片，以其中的微處理器對系統的記憶體 進行朝體程式的更新動作。 請參考第7圖，。首先，系統會先判斷(步驟400)更新 程式的程式是否來自於碟片。 本紙张尺度通則，|_制家樣準（CNS ) M規格（21〇χ297公楚） --1 ΙΛ---.------裝------訂-----、、線 ("先閱讀背面之注意事項再功寫本頁) 好浐部中头ir.^'/.JBJr.消Φ：合作=ii印欠 3879twf.doc/006 A7 _________________ B7_______ 五、發明説明（？） 當更新程式的來源是碟片時，此時便執行步驟410從 碟片中讀取出具有一特定格式的一程式內容，此特定格式 可以爲以內容表（Table Of Content，TOC)方式所之儲放資 料。程式內谷包含一程式碼（program code)與一更新程式 (update program routine)。此時，程式碼（即資料部分）移至 一第一緩衝記憶體，並且將更新程式移至一第二緩衝記憶 體。前述之第一緩衝記憶體即上述的外部緩衝記憶體，其 可以是動態隨機存取記憶體(DRAM)，而第二緩衝記憶體， 則爲前述的額外記憶體，其可以是快閃式唯讀記憶體(flash ROM)或電性可抹除可編碼唯讀記憶體(EEPR0M)。 接著，進行步驟420。藉此微處理器得以跳至更新程 式所在之第二緩衝記憶體的一特定位址上，並且將程式記 憶體切換爲資料存取空間，且第二緩衝記憶體爲一編碼空 間。 進行步驟430。執行儲存於第二緩衝記憶體中的更新 程式，並且將儲存於第一緩衝記憶體中的程式碼寫入程式 記憶體中，藉此更新程式記憶體之內容。程式記憶體，即 用來儲放控制系統程式的韌體裝置，即前述之快閃式唯讀 記憶體(flash ROM)。 接著，系統判斷(步驟進行步驟440)程式寫入記憶體的 時間是否超過，當超過一定時間便判定爲寫入失敗。若寫 入完成，則如步驟45Q，讀取記憶體的狀態，判斷編碼程 序是否完成。若未完成，則繼續執行步驟440。若完成編 碼，則如步驟460判斷使否所有的更新程式皆執行完成。 I ! 本紙張尺度埼用中國國家標準（〇奶）六4規格（2丨0\297公釐）~~" ----』----------裝------訂-----r線 (誚先閱讀背面之注意事項再功寫本筲) 3879twf.d〇c/006 A7 B7___ 五、發明说明（（0) 當未完成時，便指標指到下一個位址，並跳回步驟430， 進行更新程式的操作。當完成所有的更新程式後，便是完 成將系統韌體程式更新的動作(步驟470)。 此時，將程式記憶體切換回一讀取指令模式，並且將 該第二緩衝記憶體切換回一資料存取記憶體。並且以更新 過之該程式記憶體內容來執行所有光碟系統的操作、功能 與指令。 當更新程式的來源是經由一主機界面中（即流程412)， 從與該主機界面相容之一週邊裝置讀取出具有一特定格式 的一程式內容碟片時，此主機界面可以是IDE界面、加強 型IDE界面(enhanced-IDE)，或是SCSI界面等。使用者經 由電腦週邊，如以上述主機界面所控制的磁碟機將更新程 式下載到光碟系統中。此時，程式碼(即資料部分)移至一 第一緩衝記憶體，並且將更新程式移至一第二緩衝記憶 體。前述之第一緩衝記憶體即上述的外部緩衝記憶體，其 可以是動態隨機存取記憶體(DRAM)，而第二緩衝記憶體， 則爲前述的額外記億體’其可以是快閃式唯讀記憶體(flash ROM)或電性可抹除可編碼唯讀記憶體(EEPROM)。 以下的更新程式流程如同由碟片讀取的流程一般，即 流程420到流程470，於此便不在冗述。 因此，本發明的特徵之一是在傳統的控制晶片組中增 加一額外的記憶體。當進行系統更新程式時’更新程式係 在額外記憶體中執行’而程式資料則放置在快閃記憶體 中。因此，不會佔據記憶體空間，更可以增加韌體程式更 本紙張尺度適州屮國國家榇準（CNS ) A4规格（210X297公廣） 3 8 7 9 twf . doc / 0 0 6 A7This paper ruler; 1 Shicai Guanjiacai * (CNS) A4_ (210x297 male D --- ^-I ,, ---, ---- 1 ------ order ------ line f " 1 Read the note on the back ^ Continue to this page again 」中 中 中 戎 i! 'I? -X, Jh-T disappeared in Hezhu Private Ownership 3879twf.doc / 〇〇6 A7 _B7____ 5. Description of the invention (3) Update program instructions are placed in different sections in detail. As mentioned above, the data part is written into read-only memory through buffer memory, and the program instructions responsible for execution are placed in additional memory. Therefore, They do not occupy space with each other, and can increase the speed of program updates. In addition, in the present invention, a refresh queue is designed to have a larger update sequence waiting buffer amount. Therefore, ongoing • When the data in the read-only memory is updated, the update time will not be affected by the memory update action. In order to make the above-mentioned objects, features, and advantages of the present invention more obvious and understandable, a preferred embodiment is given below. In conjunction with the drawings, the detailed description is as follows: Brief description of the drawings: Figure 1 shows the architecture of the optical disc system; Figure 2 shows the According to the system of the optical disk system of the present invention, the system controls the chipset and the surrounding blocks; FIG. 3A shows the memory configuration diagram of the flash memory and the extra memory according to the optical disc system according to the present invention in general; FIG. 3B In the case of the optical disc system of the present invention, in the case of updating the program, the memory allocation diagram of the flash memory and additional memory; FIG. 4 shows the data structure of the flash memory and the timing chart of the control signals; and FIG. 5 shows Diagram of the control signal architecture between the microprocessor and flash memory; Figure 6 shows the diagnostic flowchart of the firmware program update of the optical disc system; 5 This paper is a Tongzhou Chinese National Standard (CNS) A4 specification (210X297 mm) 1ΊΙ .--- r ----- install ------ order ------- line (诮 Read the precautions on the back before filling this page) 3879twf.doc / 006 A7 B7 Description of the invention (y ) And Figure 7 shows the execution flowchart of the firmware program update in the optical disc system. Label description: 100 discs 102 optical read head 110 RF amplifier controller 112 microprocessor 114 decoder 116 buffer memory 118 read-only Memory 120 Host Interface 122 Computer 130 Class Digital converter 200 optical disk system control chip 202 additional memory 206 decoder 209 exchange circuit 212 buffer memory 204 microprocessor 208 controller 210 flash ROM 214 host interface via " ·· 部 部头 "-^^ hT eliminates cooperation. Shirt 216 computer 300 ~ 320 firmware update diagnostic process steps 322 ~ 470 firmware update program zero-step procedure embodiment The present invention proposes a method that can quickly update the firmware in the memory of the optical disc system (firmware) Method, which can easily and quickly update the firmware program for both the manufacturer and the customer. Figure 2 of the dream tester, the SyStem control chipset 200 of the present invention, which is used to update the firmware program of the optical disc system, is based on the paper standard Chuzhou National Standard (CNS) A4. 2 丨 0X297 male thin) I .; ----------------------------- order d-line '/ · (铕 read the precautions on the back before (Zhuo page) 3879twf.doc / oog A7 B7 # 沪 部 中 i); ir.4 '-' And UT disappears in conjunction with the bamboo buckle *, '! Water V. Description of the Invention (ίΓ) System firmware Stored in the memory 210, which can be a flash ROM (flash ROM) or an electrically erasable and codeable ROM (EEPROM). The control chip 200 includes an extra RAM 202, a microprocessor 204, a decoder 206, and a controller 208. This additional memory 202 is not found in the control chip of the conventional optical disk system. As shown in the figure, the microprocessor 204 is coupled to the additional memory 202, the decoder 206, the controller 208, and the memory 210, so as to directly control the decoder 206, the controller 208, and directly access the additional memory 202 and memory. 210. The decoder 206 and the controller 208 are coupled to each other. The controller 208 is used to receive control signals and data input from the outside, such as a signal from the RF controller 11 and data from the disc 100. The decoder 206 is transferred to an external buffer memory 212, which can be a type of dynamic random access memory (DRAM), and can communicate with a host computer 216 through a host interface 214. The host interface can be an IDE interface, an enhanced-IDE interface, or a SCSI interface. When the system is in the normal mode, that is, when the system firmware program does not need to be updated, the microprocessor 204 reads the data in the flash memory 21 through the bus, and the flash memory 210 is used as the storage space for the system program at this time. To store all the command functions used to control the optical disc system, and ^ use the additional memory 202 as a memory space for data. In general, after the computer is reset, the microprocessor 204 of the optical disc system initializes the optical disc drive, such as CD_ROM, and waits for the IDE command from the host computer 216 to read from the disc 10. data. When the host computer 216 issued a command to read the data of the disc 100, the microprocessor--1J ------------------------------- Read the notes on the back and write this page) 3879twf.doc / 〇〇6 A7 B7 V. Description of the invention (6> 204 will send the correct parameters to control the controller 208 and decoder 206 to drive the drive in the optical disc system The motor and the optical pickup read the data stored in the disc 100. The data of the disc 100 is decoded and error corrected by the decoder 206, and then put into the buffer memory (DRAM) 212. Therefore Then, the computer 216 can read the data stored in the buffer memory 212 through the decoder 206 through the IDE interface 214. At this time, the extra memory 202 is used as a memory space for general data, and the flash memory 210 It is used as the memory space of the system program. Please refer to FIG. 3A, which shows the memory configuration diagram of the flash memory 210 and the extra memory 202. When the optical disk system needs to update the firmware program instructions in the flash memory 210 (Instruction) has characteristics such as Table Of Content (T0C) The update program of the format data can be placed in the optical disk system in the form of a disc, or a specific update program software can be executed by the host computer 216. The program content includes a program code and an update program At this time, the additional memory 202 will be used to place the update program loaded from the disc 100 or the computer 216, and the code portion will be stored in the buffer memory (DRAM) 212 first. Microprocessor 204 The instructions for updating the program are read from the extra memory 202 and executed, and then the code data in the buffer memory 212 are sequentially written into the flash memory 210. The flash memory 210 is used as code The data memory space is compared with the data stored in the buffer memory 212. After writing data to the flash memory 210, the flash memory 210 outputs an indicator flag to the data bus (data bus), used to indicate the current state of the flash memory 210. The processor X paper is suitable for the state of China® National Ladder (CNS) A4 specification (2) ox297 company — ^ ------- ------- install ------ order --- -Line (诮 1 Read the notes on the back and read and write this I) 3879twf.doc / 〇〇6 A7 B7 V. Description of the Invention (q) 202 This can tell whether the update process is in progress or has been completed. As shown in Figure 4, when the output enable (OE) signal turns to a high level and the write signal (WR) starts to turn to a low level, the flash memory 210 starts to write data, and When WR turns to a high level, the writing mechanism is ended, and the program state of the flash memory is output. There are at least two general flash memory coding and writing modes: one is a byte by byte method, and the other is a page by page method. In general, a page is 128 bytes. If the output state of the flash memory 210 indicates that the update process can be performed, the microprocessor 204 will remain in a wait state until the next byte or next page of data can be written. This process will continue until all the code data placed in the buffer memory 212 is written to the flash memory 210. At this time, the firmware update process of the flash memory 210 in the optical disc system is completed. During the encoding and writing process of the flash memory 210, the memory of some addresses is reserved, such as the addresses F880h ~ FFFFh in FIG. 3B. This part of the memory will not be read or written, and it is used to prevent the flash memory 210 from being incompletely coded for any reason. Please refer to Fig. 5. After the buffer memory 212 loads the code data and the extra memory loads the update program, the microprocessor 204 will jump to a certain address, such as F880h in Fig. 3B. This address is The code mapped to the extra memory 202 is used to update the code of the flash memory 2 丨 0. The microprocessor 204 generates an indicator flag for the optical disc system to a switch circuit 209 for switching to the code writing mode. At this time, the flash memory paper size is suitable for the store; ^^ (: yang) 8 4 size (210 \ 297 mm) J „---.---- installation ------ order ----- W-line (" Read the notes on the back and the copybook first) 3879twf.doc / 006 A7 B7 After the Ministry of Shanghai's decision was made, ^ Μ-Τίνί 竹 AD Bamboo fir seal owed 5. Description of the invention ( 》) The body 210 will switch to the code data memory space, and the microprocessor 204 will read and execute from the highest address in the instruction stack in the additional memory 202. The data in the buffer memory 212 is still decoded The control circuit 209 generates a control signal 'such as a chip select signal (CS) and a write enable signal (such as a chip select signal (CS)) for controlling the flash memory 210 through the control of the microprocessor 204. write enable (WE), output enable (OE), etc. Next, the control flow of the firmware program update in the optical disc system of the present invention will be described with reference to the flowcharts of FIGS. 6 and 7. Please refer to FIG. 6 First, in the process 300, the computer is reset after being turned on, and then the computer executes 310 to initialize the optical disc system. (imtiaHzaUon). After that, the judgment 320 is performed, and when the firmware program of the optical disc system is required to be updated, the firmware update program of 322 is executed; and when the firmware of the optical disc system does not need to be updated, the flow is as 330 The firmware program originally stored in the system memory is used to execute all operations, functions, and instructions of the optical disc system. When the manufacturer or user requests to update the firmware program of the optical disc system, the firmware of the above process 322 is executed Update program. The source of the firmware update program can be the update program stored in the disc, or the user can download the update program into the optical disc system from the computer through the host interface, as in the aforementioned system control chip. The microprocessor updates the body program of the system's memory. Please refer to Figure 7. First, the system will first determine (step 400) whether the program of the updated program comes from the disc. General rules for this paper, | _ Manufacturer's sample standard (CNS) M specification (21〇χ297 公 楚) --1 ΙΛ ---.------ installation ------ order ----- 、、 line (" first Read the notes on the back again (Write this page) ir. ^ '/. JBJr. Eliminate Φ: cooperation = ii owe 3879twf.doc / 006 A7 _________________ B7_______ 5. Description of the invention (?) When the source of the update program is a disc, At this time, step 410 is executed to read out a program content having a specific format from the disc, and the specific format may be stored data in a Table Of Content (TOC) manner. The program valley includes a program code and an update program routine. At this time, the code (that is, the data part) is moved to a first buffer memory, and the update program is moved to a second buffer memory. The aforementioned first buffer memory is the aforementioned external buffer memory, which may be a dynamic random access memory (DRAM), and the second buffer memory is the aforementioned additional memory, which may be a flash-only memory. Read memory (flash ROM) or electrically erasable and codeable read-only memory (EEPR0M). Then, step 420 is performed. This allows the microprocessor to jump to a specific address of the second buffer memory where the update procedure is located, and switches the program memory to a data access space, and the second buffer memory is a coding space. Go to step 430. The update program stored in the second buffer memory is executed, and the code stored in the first buffer memory is written into the program memory, thereby updating the content of the program memory. Program memory, which is the firmware device used to store the control system programs, is the aforementioned flash ROM. Next, the system judges (step proceeds to step 440) whether the time for the program to write to the memory is exceeded, and when it exceeds a certain time, it is determined that the writing has failed. If the writing is completed, as in step 45Q, the state of the memory is read to determine whether the encoding program is completed. If not, proceed to step 440. If the encoding is completed, it is determined in step 460 whether all the update programs are completed. I! This paper uses Chinese National Standard (〇 奶) 6-4 size (2 丨 0 \ 297mm) ~~ " ---- 』------------------ --Order ----- r line (诮 Read the notes on the back first, then write the work 筲) 3879twf.d〇c / 006 A7 B7___ V. Description of the invention ((0) When it is not completed, the indicator points to the next An address, and jump back to step 430 to update the program. When all the update programs are completed, the operation of updating the system firmware program is completed (step 470). At this time, the program memory is switched back to one Read the command mode, and switch the second buffer memory back to a data access memory, and execute all operations, functions, and commands of the optical disc system with the updated program memory content. When the source of the update program is When reading a program content disc with a specific format from a peripheral device compatible with the host interface through a host interface (ie, process 412), the host interface may be an IDE interface or an enhanced IDE interface ( enhanced-IDE), or SCSI interface, etc .. The controlled disk drive downloads the update program to the optical disc system. At this time, the code (that is, the data part) is moved to a first buffer memory, and the update program is moved to a second buffer memory. The first buffer memory is the above-mentioned external buffer memory, which may be a dynamic random access memory (DRAM), and the second buffer memory is the aforementioned extra memory, which may be a flash-only read-only memory. Memory (flash ROM) or electrically erasable and codeable read-only memory (EEPROM). The following update program process is the same as the process read by the disc, that is, process 420 to process 470, which will not be described in detail here. Therefore, one of the features of the present invention is to add an additional memory to the conventional control chipset. When the system update program is performed, the update program is executed in the additional memory and the program data is placed in the flash memory. Therefore, it will not occupy the memory space, and it can increase the firmware program. The paper size is suitable for the state standard (CNS) A4 (210X297). 3 8 7 9 twf .doc / 0 0 6 A7
五、發明説明（//) 新的速度。 綜上所述，雖然本發明已以一較佳實施例揭露如上， 然其並非用以限定本發明，任何熟習此技藝者，在不脫離 本發明之精神和範圍內，當可作各種之更動與潤飾，因此 本發明之保護範圍當視後附之申請專利範圍所界定者爲 準。 本紙張尺廋適州中國國家標準（CNS ) A4規格（210X297公釐） II i— I I I :- n ---- I -I--- ——---^^1 X» 一 、？ (誚先閲讀背面之注-^項·«·蛾寫本I )5. Description of the invention (//) New speed. In summary, although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make various changes without departing from the spirit and scope of the present invention. And retouching, so the scope of protection of the present invention shall be determined by the scope of the attached patent application. The size of this paper is in accordance with China National Standard (CNS) A4 (210X297 mm) of the state of China. (I read the note on the back-item ^ "Moth Book I)