A7 B7 I2b522 2180PIF.DOC/006 五、發明説明（/ ) 本發明是有關於一種電腦系統，且特別是有關於一種 具有內部VGA模組之動態致能/非致能功能的電腦系統。 個人電腦中的影像卡（video card)或影像轉接器（video adapter)是硬體介面的一種，屬於顯示裝置的一部份。第 1圖是典型的電腦系統架構，包括一中央處理單兀（CPU) 10，一基本輸入/輸出系統（BIOS) 20，一主記憶體50 ’ 具有一輔助儲存裝置（auxiliary storage) 7〇之一介面控制 器（interface controller) 60，以及一影像轉接器30，連接 至系統匯流排12。影像資料經由該影像轉接器30處理後’ 可送出一影像信號至一顯示裝置40，該顯示裝置可以是陰 極射線管（CRT)或液晶顯示器（LCD)等#。 有時，該影像轉接器30會與主機板合倂以降低成本 並增加電腦系疏的可靠度，並且可將節省下來的空間用來 增設擴充槽使系統更有特色、功能更強，使系統更快速' 更易於修改。 當影像卡插上上述之主機板時，則必須將內部影像轉 接器模組非致能，齊知的作法是採用如第2圖中所示之跳 躍器設定的方式將內部影像轉接器模組非致能°如第2圖 所示，內部影像轉接器模組30A具有一跳躍器31置於影 像轉接器32與匯流排12之間，可用以選擇將識別信號線 IDSEL斷路或導通，藉此控制影像轉接器32是否與匯流 排12相連。一開始，跳躍器31設定爲導通的狀態’告知 電腦系統該內部影像轉接器模組30A的存在’並將該內部 影像轉接器模組30A致能；若是使用外接的影像卡80時’ 本紙張尺度逍用中國國家標準（C.NS ) Α4规格（210X297公嫠） 請 先 閲 η 注 •意 事 項 再 ί 經濟部中央標準局貝工消費合作社印裝 經濟部中夬標準局員工消費合作社印製 2180PIF.DOC/006 A7 ______B7_ 五、發明説明（\ ) 則在影像卡80插入擴充槽18之前（或之後）利用手動的 方式將跳躍器31設定爲斷路的狀態，經由此初步的程序， 即可將該內部影像轉接器模組30A非致能，而將影像卡80 致能 此種以手動的方式設定跳躍器，使其將內部影像模組 致能或非致能的過程相當麻煩，而這樣的設計也不符合視 窗95 (Windows 95)上隨插即用的硬體設計條件。 因此本發明的年要目的就是在提供一種電腦系統，該 電腦系統包括一內部影像轉接器模組，可視外接式影像卡 存在與否提供一動態致能/非致能之功能)。 爲達成本發明之上述及其他目的，本發明之電腦系統 主機板上包括一內建的影像轉接器模組；複數個擴充槽用 以連接影像卡；一致能/非致能裝置，用以將該內建的影 像轉接器模組致能或非致能。該致能/非致能裝置包括一 識別信號控制模組，該識別信號控制模組位於該內建的影 麁轉接器模組與一系統匯流排之間，可提供一遮蔽/未遮 蔽（masking/unmasking)信號，該遮蔽/未遮蔽信號係經 由電腦系‘統餽入一控制信號後產生；一系統BIOS，與該 系統匯流排連接，可透過一通用輸入/輸出（general purpose input/output，. GPI0)模組輸出該控制信號至該識別信號 控制模組，並依據該控制信號將遮蔽信號與未遮蔽信號擇 一送出，而該控制信號的型態則視外接式影像卡是否與擴 充槽相連而定。 在控制系統中，該系統匯流排包括PCI匯流排。此外， 5 本紙張尺度適用中國國家標準（CNS > A4规格（210X297公釐） " ---.--l·----%|}\裝--------訂-------Λ ' ινπ\ φ (請先閱讀背面之注意事項再填寫本頁) A7 B7 經濟部中央標準局員工消費合作社印製 2180PIF.DOC/006 五、發明説明（3) 該裝置識別信號初値設定爲未遮蔽或主動狀態，因此電腦 系統可藉此得知內部影像轉接器模組存在。A7 B7 I2b522 2180PIF.DOC / 006 V. Description of the Invention (/) The present invention relates to a computer system, and in particular to a computer system with a dynamic enable / disable function of an internal VGA module. A video card or video adapter in a personal computer is a type of hardware interface and belongs to a part of a display device. Figure 1 is a typical computer system architecture, including a central processing unit (CPU) 10, a basic input / output system (BIOS) 20, a main memory 50 'with an auxiliary storage device 70. An interface controller 60 and an image adapter 30 are connected to the system bus 12. After the image data is processed by the image adapter 30, an image signal can be sent to a display device 40. The display device can be a cathode ray tube (CRT) or a liquid crystal display (LCD). Sometimes, the image adapter 30 will be combined with the motherboard to reduce costs and increase the reliability of the computer system, and the saved space can be used to add expansion slots to make the system more unique and powerful. The system is faster 'and easier to modify. When the video card is plugged into the above motherboard, the internal video adapter module must be disabled. The known method is to use the jumper settings shown in Figure 2 to connect the internal video adapter module. The module is not enabled. As shown in Figure 2, the internal image adapter module 30A has a jumper 31 placed between the image adapter 32 and the bus 12, which can be used to choose to disconnect the identification signal line IDSEL or It is turned on to control whether the image adapter 32 is connected to the bus 12. At the beginning, the jumper 31 is set to a conductive state to 'notify the computer system of the existence of the internal image adapter module 30A' and enable the internal image adapter module 30A; if an external image card 80 is used ' This paper size is in accordance with China National Standard (C.NS) Α4 size (210X297). Please read η Note • Notices again. 丨 Printed by the Central Standards Bureau of the Ministry of Economic Affairs. Print 2180PIF.DOC / 006 A7 ______B7_ 5. Description of the Invention (\) Before the video card 80 is inserted into the expansion slot 18 (or after), the jumper 31 is manually set to the open circuit state. Through this preliminary procedure, That is, the internal image adapter module 30A is not enabled, and the image card 80 is enabled. This manual setting of the jumper makes it difficult to enable or disable the internal image module. , And this design does not meet the plug-and-play hardware design requirements of Windows 95 (Windows 95). Therefore, the main purpose of the present invention is to provide a computer system including an internal image adapter module, and the presence or absence of an external image card provides a dynamically enabled / disabled function). In order to achieve the above and other objectives of the present invention, the computer system motherboard of the present invention includes a built-in image adapter module; a plurality of expansion slots are used to connect the image card; Enable or disable the built-in image adapter module. The enabled / disabled device includes an identification signal control module, which is located between the built-in shadow adapter module and a system bus, and can provide a shielded / unshielded ( masking / unmasking) signal, the masking / unmasking signal is generated after a control signal is fed into the computer system; a system BIOS is connected to the system bus and can be transmitted through a general purpose input / output (general purpose input / output GPI0) module outputs the control signal to the identification signal control module, and sends out one of the masked signal and the unmasked signal according to the control signal, and the type of the control signal depends on whether the external video card is connected with the expansion The slots are connected. In the control system, the system bus includes a PCI bus. In addition, 5 paper sizes are applicable to Chinese national standards (CNS > A4 size (210X297 mm) " ---.-- l · ----% |} \ packing -------- order- ------ Λ 'ινπ \ φ (Please read the notes on the back before filling in this page) A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 2180PIF.DOC / 006 V. Description of the invention (3) The device The identification signal is initially set to an unmasked or active state, so the computer system can learn that the internal image adapter module exists.
以另一個角度來看，本發明所提供之方法，係在電腦 開機時的自我測試程序中，自動檢測出外接式影像卡是否 與擴充槽相連接，並藉此判斷是否將內部影像轉接器模組 非致能；若檢出外接式影像卡與擴充槽相連接，則輸出一 低位準的邏輯信號至GPIO模組，用以將餽入內部影像轉 接器模組的裝置識別信號遮蔽，而後執行外接式影像卡中 的起始程式（initialization routine)並回復至系統BIOS 程式。 爲讓本發明之上述和其他目的、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圖是習知的一種具VGA卡的電腦系統方塊圖； ^ 第2圖是另一種習知的電腦系統方塊圖，包括內建式 的VGA模組及外接式影像卡； 第3·圖是本發明中的一種內部影像轉接器模組之控制 系統方塊圖，以及 第4圖是第3圖的操作流程圖。 實施例 請參照第3圖，其繪示依照本發明之一較佳實施例的 一種內部影像轉接器模組之控系統方塊圖。該控制系統 包括一通用輸入/輸出模組110;—識別信號控制模組Π0 ; 6 本紙張"又度適用中國國家標準（CNS > Λ4规格（210X297公釐) (請先聞讀背面之注意事項再填寫本頁)From another perspective, the method provided by the present invention automatically detects whether an external image card is connected to the expansion slot in a self-test procedure when the computer is turned on, and thereby determines whether to connect the internal image adapter. The module is not enabled; if an external video card is detected to be connected to the expansion slot, a low-level logic signal is output to the GPIO module to mask the device identification signal fed to the internal image adapter module. Then execute the initialization routine in the external video card and restore to the system BIOS program. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is given below in conjunction with the accompanying drawings for detailed description as follows: Brief description of the drawings: FIG. 1 Is a conventional block diagram of a computer system with a VGA card; ^ FIG. 2 is a block diagram of another conventional computer system, including a built-in VGA module and an external video card; and FIG. 3 is the present invention A block diagram of a control system of an internal image adapter module is shown in Fig. 4, and Fig. 4 is an operation flowchart of Fig. 3. Embodiment Please refer to FIG. 3, which is a block diagram of a control system of an internal image adapter module according to a preferred embodiment of the present invention. The control system includes a universal input / output module 110; —identification signal control module Π0; 6 papers ”and again applicable to Chinese national standards (CNS > Λ4 specification (210X297 mm) (Please read the (Please fill in this page again)
經濟部中央標準局員工消費合作社印裂 4 2552 2 五、發明説明（弘） —內部影像轉接器模組130 ’內建於.主機板上；該識別信 號控制模組120置於該內部影像轉接器模組130與一系統 匯流排104之間，透過_別信號線IDSEL分別與內部影像 轉接器模組Π0及系統匯流排104相連接，其中該系統匯 流排104可以是PCI匯流排；並且，內部影像轉接器模組 130具有VGA資料的位址及控制線，可與系統匯流排104 相連；經由系統匯流排104，可分別與電腦系統中的中央 處理單元100、基本輸入/輸出系統102、主記憶體106、 輔助儲存裝置108以及擴充槽112相連。本系統亦包括一 顯示器200，例如陰極射線管或液晶顯示器等，由內部影 像轉接器模組130所產生的影像信號可經由該顯示器200 顯示出來，當外接式影像卡30G插入擴充槽112時，亦可 由顯示器200將影像信號顯示出來。 此外，該電腦系統更包括一通用輸入/輸出（GPI〇 ) 模組110’可接收來自於系統匯流排104的一控制信號S。， 並輸出一信號至識別信號控制模組120，以決定是否將 餽入內部影像轉接器模組130的IDSEL信號遮蔽。一開始， IDSEL信號設定爲非遮蔽或主動狀態，告知電腦系統內部 影像轉接器模組130存在，因此，電腦系統便將內部影像 轉接器模組130致能。倘若外接式影像卡300插入擴充槽 112，則在電腦開機時的自我檢測程序時便會檢出外接式 影像卡300，此時基本輸入/輸出系統1〇2便產生一控制信 號S。餽入通用輸入/輸出模組11〇。該控制信號S。具有一 高或低的邏輯位準’可使通用輸入/輸出模組U0產生一 7 本紙張歧逍用巾關家鮮（CNS ) A视21GX297公釐) ^ (請先聞讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消費合作社印裝 4 255 2 2 2180PIF.DOC/006 A7 B7 五、發明説明（t) . 遮蔽信號Sm，當識別信號控制模組120接收到該遮蔽信號 Sm後，IDSEL信號旋即失效，如此，便可使內部影像轉接 器模組130非致能而將外接式影像卡300致能。 第4圖繪示本發明中電腦系統之細部操作流程。開機 後基本輸入/輸出系統102會執行開機自我測試（Power-On SelfTest，POST)，如步驟100所示。在開機自我測試時， 可得知擴充槽112上是否有安裝外接式影像卡300，如步 驟110所示。假使檢測出外接式影像卡300，便輸出一低 的邏輯位準信號或是一斷路（off)信號S。至通用輸入/輸 出模組110，並將餽入內部影像轉接器模組130'的IDSEL 信號遮蔽，如步驟120所示。在這個步驟中，內部影像轉 接器模組130會被非致能，因此·基本輸入/輸出系統102 便執行外接式影像卡300中的基本輸入/輸出程序，如步 驟130所示，而後回復至系統bios程式，如步驟160所示。 同時，若在步驟Π0中未檢測出外接式影像卡300的 存在，便輸出一高的邏輯位準信號或是一導通（cm)信號 S。至通用輸入/輸出模組110，而此時IDSEL信號並不加 以遮蔽，並將IDSEL信號餽入內部影像轉接器模組130， 如步驟140所示。在這個步驟中IDSEL信號維持原有功能 並將內部影像轉接器模組130致能。接著，基本輸入/輸 出系統102執行內部影像轉接器模組130之既有程式，如 步驟150所示，而後回復至系統bios程式，如步驟16〇所 示。 由上述內容可明顯得知，本發明之控制裝置可提供一 8 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ^^1- Γ·· ^^^1 I V- ·_-Γ士 ^^^1 ^^^1 ^^—^1 I、一 h (請先閱讀背面之注意事項再填寫本頁) 425522 2180PIF.DOC/006 A7 -----B7________ 五、發明説明（6 ) 種簡便的方法，將外接式影像卡與內建有影像轉接器模組 的電腦系統相結合.。當外接式影像卡與系統相連時，內部 影像轉接器模組會自動非致能，而在執行開機程序的同時 便已將外接式影像卡啓動。此種控制方式亦可符合微軟視 窗95 ( Microsoft Wmdows95)的硬體設計需求。 雖然本發明已以一較隹實施例揭露如上，然其並非用 良定本發明，任何熟習此技藝者，在不脫離本發明之精 神和範圍內，當可作些許之更動與潤飾，因此本發明之保 __圍當視後附之申請專利範圍所界定者爲準。 an* m fl iK ί1 I i ^—»1 1^1 ^^^1 V; , ,'棄 i (請先閲讀背面之注$項再填寫本頁) 經濟部中央標準局員工消費合作社中製 適 嫠 29Employees 'cooperative of the Central Standards Bureau of the Ministry of Economic Affairs of the People's Republic of China 4 2552 2 V. Description of the invention (Hong)-Internal image adapter module 130' built in. Motherboard; the identification signal control module 120 is placed on the internal image Between the adapter module 130 and a system bus 104, it is connected to the internal image adapter module Π0 and the system bus 104 through the _different signal line IDSEL, wherein the system bus 104 may be a PCI bus In addition, the internal image adapter module 130 has a VGA data address and a control line, and can be connected to the system bus 104. Through the system bus 104, the central processing unit 100 and the basic input / The output system 102, the main memory 106, the auxiliary storage device 108, and the expansion slot 112 are connected. The system also includes a display 200, such as a cathode ray tube or a liquid crystal display. The image signal generated by the internal image adapter module 130 can be displayed through the display 200. When an external image card 30G is inserted into the expansion slot 112, The image signal can also be displayed on the display 200. In addition, the computer system further includes a general-purpose input / output (GPI0) module 110 'which can receive a control signal S from the system bus 104. And output a signal to the identification signal control module 120 to determine whether the IDSEL signal fed to the internal image adapter module 130 is masked. At the beginning, the IDSEL signal is set to a non-blocking or active state to inform the presence of the image adapter module 130 inside the computer system. Therefore, the computer system enables the internal image adapter module 130. If the external video card 300 is inserted into the expansion slot 112, the external video card 300 will be detected during the self-test procedure when the computer is turned on. At this time, the basic input / output system 102 generates a control signal S. Feed in the universal input / output module 11〇. The control signal S. Have a high or low logic level 'can make the universal input / output module U0 to produce a 7-sheet paper towel (CNS) A as 21GX297 mm) ^ (Please read the precautions on the back first (Fill in this page again) Order printed by the Consumer Standards Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 4 255 2 2 2180PIF.DOC / 006 A7 B7 V. Description of the invention (t). Mask signal Sm, when the identification signal control module 120 receives the mask After the signal Sm, the IDSEL signal is immediately invalidated. In this way, the internal image adapter module 130 can be disabled and the external image card 300 can be enabled. FIG. 4 shows the detailed operation flow of the computer system in the present invention. After powering on, the basic input / output system 102 performs a power-on self test (POST), as shown in step 100. During the power-on self-test, it can be known whether an external video card 300 is installed on the expansion slot 112, as shown in step 110. If the external video card 300 is detected, a low logic level signal or an off signal S is output. Go to the universal input / output module 110, and shield the IDSEL signal fed to the internal image adapter module 130 ', as shown in step 120. In this step, the internal image adapter module 130 is disabled, so the basic input / output system 102 executes the basic input / output procedure in the external image card 300, as shown in step 130, and then returns Go to the system bios program, as shown in step 160. At the same time, if the presence of the external video card 300 is not detected in step II0, a high logic level signal or a conduction (cm) signal S is output. To the universal input / output module 110, and at this time, the IDSEL signal is not shielded, and the IDSEL signal is fed into the internal image adapter module 130, as shown in step 140. In this step, the IDSEL signal maintains the original function and enables the internal image adapter module 130. Then, the basic input / output system 102 executes the existing program of the internal image adapter module 130, as shown in step 150, and then returns to the system bios program, as shown in step 160. It is obvious from the above content that the control device of the present invention can provide an 8-paper size applicable to Chinese National Standard (CNS) A4 (210X297 mm) ^^ 1- Γ ·· ^^^ 1 I V- · _ -Γ 士 ^^^ 1 ^^^ 1 ^^ — ^ 1 I, a h (Please read the precautions on the back before filling this page) 425522 2180PIF.DOC / 006 A7 ----- B7________ 5. Description of the invention (6) A simple and convenient way to combine an external video card with a computer system with a built-in video adapter module. When the external video card is connected to the system, the internal video adapter module will be automatically disabled, and the external video card will be activated at the same time as the boot process is performed. This control method can also meet the hardware design requirements of Microsoft Wmdows95. Although the present invention has been disclosed above with a comparative example, it is not a well-defined invention. Any person skilled in the art can make some changes and decorations without departing from the spirit and scope of the invention. Therefore, the present invention The guarantee __ Wai Dang is subject to the scope of the attached patent application. an * m fl iK ί1 I i ^ — »1 1 ^ 1 ^^^ 1 V;,, 'Abandon i (please read the note on the back before filling in this page) Employees' Cooperatives in the Central Standards Bureau of the Ministry of Economic Affairs Adapt 29