TW201217979A - employing single PCI slot on computer motherboard to be expanded with multiple PCI devices - Google Patents

Abstract

The present invention relates to a PCI adapter card of an asynchronous expansion system compatible with PCI interface. The asynchronous expansion system comprises a PCI adapter card and a plurality of asynchronous expansion modules. The PCI adapter card comprises a PCI controller that has been set as a multifunctional device, an asynchronous interface controller, and an asynchronous interface. Each of the plurality of asynchronous expansion modules comprises a first and a second asynchronous interface, which are in serial connection with each other, and the first asynchronous interface is electrically connected to the asynchronous interface of the PCI adapter card, such that the PCI controller can set the number for each asynchronous expansion module, and obtains the resource setting of each asynchronous expansion module through the asynchronous interface controller, and allocates the corresponding address resource based on the resource setting of each asynchronous expansion module. Therefore, during a scanning process of the operating system, the corresponding PCI configuration space can be allocated to the corresponding asynchronous expansion module to allow the PCI controller to successfully execute the signal conversion procedure.

Description

201217979 VI. Description of the Invention: [Technical Field] The present invention relates to a PC丨 expansion interface, and more particularly to a PC丨 adapter card compatible with a non-synchronous expansion system of a pci interface. [First-hand technology] With the rapid development of computer technology, the computer peripheral and interface technologies have also evolved rapidly. From the early 17SA interface and 丨SA interface of the X17AT computer to the PCI interface with plug-and-play and high-bandwidth. . In general, the PCI local busbar of the computer motherboard has high scalability, and finally supports 256 busbars, and each busbar can be connected to multiple PCI devices; in addition, each pci device can support 8 pcs. FFunctions 'In short' the pci device can be regarded as 8 valid PCI devices by the computer; the setting method is that the PC device provides two types of setting functions, one of which is a single-function pc device. (Sjgna| Functj〇n Lu Device); the other is a multi-function PC device (Muti-Function Device). Therefore, if there are enough pc ports in the computer motherboard, a considerable number of PCI devices can be supported. However, for some special application computers, only a single PCI slot can be reduced due to the original planning. However, if more PC devices need to be connected later in the application development, the entire computer must be replaced or the relevant developers should be developed. The all-in-one PC 丨 device's cost is higher than the replacement of the entire group of computers and the development time is long. Therefore, there is currently a shortage of the ρα slot of the computer motherboard, and the department must connect more pC devices, so that the existing The computer host faces the dilemma of being replaced.

[SJ 3 201217979] SUMMARY OF THE INVENTION In view of the above-mentioned prior art defects, the main object of the present invention is to provide a non-synchronous expansion system compatible with a PCI interface, which can expand a plurality of phases only by one PIC slot of a computer motherboard. The non-synchronous expansion module of the PC device can be used, so that the computer hardware and its operating system do not need to be replaced or updated. The main technical means for achieving the above purpose is to enable the PCI adapter card compatible with the non-synchronous expansion system of the PCI interface, wherein the asynchronous expansion system includes a plurality of asynchronous expansion modules, and each synchronization expansion module includes There is a first and second asynchronous interface to be connected in series; and the PC丨 adapter card includes a PC controller that has been set as a multi-function device, a non-synchronous interface controller, a PC interface, and a The non-synchronous interface is electrically connected to the non-synchronized interface controller and the PC interface, and has an extension numbering program and a signal conversion program; and the non-synchronous interface is electrically connected to the asynchronous interface control. The PC interface is plugged into the PCI interface on the computer motherboard. S] • It can be seen from the above that the present invention mainly designs a PCI adapter card, electrically connecting the first asynchronous interface of the serially connected asynchronous expansion module to the asynchronous interface of the PCI adapter card, so that the PC is controlled. The pair of connected asynchronous expansion modules, 'and the expansion numbering program, and then obtain the resource settings of each asynchronous expansion module through the non-synchronous interface controller, and allocate corresponding bits according to the resource settings of each asynchronous expansion module. Address resource; that is, the PC 丨 adapter card is inserted into a PC 丨 slot of the computer motherboard, and is set as a multi-function device, and the serially connected non-synchronous expansion modules can be numbered and After the address resource setting is completed, when the operating system starts scanning after the computer host is turned on, the corresponding PCI group 4 201217979 state space can be allocated to the corresponding non-synchronous expansion module, so that the computer operating system can view the non-synchronous expansion modules as effective. The PCI device realizes the purpose of augmenting more pci devices by using only a single PCI slot of the computer motherboard. [Embodiment] Referring first to FIG. 1 and FIG. 2, a system architecture diagram of a non-synchronous expansion system using a pci riser card of the present invention includes: a PCI adapter card. The PCI controller 11 is configured as a multi-function device, a non-synchronized interface controller a, a pc interface 13 and a non-synchronized interface 14; wherein the PCI controller 11 is electrically connected to the asynchronous; The surface controller 12 and the PCI interface 13 are provided with an extension numbering program, a resource allocation program and a signal conversion program. The non-synchronized "face 14 is electrically connected to the asynchronous interface controller 12, and the PCI interface 13 is In the embodiment, the PCI controller 11 is configured as a multi-function device; the [S] complex asynchronous expansion module is inserted into the PC slot 311 on the computer motherboard 31. 2 〇, corresponding to eight p ◦丨 configuration spaces (FO~F7), and each synchronous expansion module 2 〇 includes a first and second different v; 丨 22, 23, to be connected in series with each other As shown in FIG. 9, the first asynchronous interface 22 of the asynchronous expansion module 20 is connected in series. Shu adapter connected to the pc,:. The non-synchronous interface 14 is configured to perform the expansion numbering procedure to respectively assign the non-synchronous expansion modules 20 to be connected, and then obtain the asynchronous expansion modules 20 through the asynchronous interface controller 12. The resource setting 1 resource setting of each non-synchronous expansion module 2〇 allocates the corresponding 5 201217979 address resource, so that the PC 丨 controller 11 smoothly performs the signal conversion process. Moreover, the non-synchronized interface 14 and each of the second and second asynchronous interfaces 22 and 23 respectively include a plurality of addresses 埠, data 埠, read 埠, write 埠, asynchronous expansion module selection 埠, and signal confirmation 埠, reset 埠, 罝 罝 early, interrupt signal 埠 and configure channel 埠. As for the above non-synchronous expansion modules 2, the following includes:

The plurality of serial ports 埠25 are provided for interleaving with external devices; at least one parallel port 26 is provided for paralleling external device plugs and a series of parallel controllers 21, electrically connecting the first and second non- Synchronization interface 23, serial port 25 and parallel port 26 'where the string parallel controller 2] 22 presets its resource setting according to the number of serial port 埠 25 and parallel port 26, and transmits it to = first-non-synchronous interface 22 When the pc丨 riser card 1() requests to provide a resource sigh, the preset setting data is transmitted to the PCI adapter card 1G through the first asynchronous interface 22; and the serial parallel controller 21 is used to convert the serial埠25 and the signal between the parallel port 26 and the first asynchronous interface 22. Referring to FIG. 3 to FIG. 5, the pc|controller executing the extension numbering program includes the following steps: output-start bit (STRAT BIT) to the first asynchronous expansion module S40; continuous output pair first The non-synchronous expansion module sets the number of three digits (DATA BIT〇) S41; the output - the starting bit (STRAT B) to the next asynchronous expansion module 542; the connection, the output is the next asynchronous The three-digit number of the expansion module is set to 543; and 201217979 repeats the first two steps until all non-synchronous expansion modules are set to stop S44 ° as shown in Figure 3, because the multiple asynchronous expansion modules (10) are first and second. The non-synchronous interfaces 22 and 23 are connected in series with each other, and then connected to the non-synchronous interface η of the first-non-synchronous interface 22pc|the adapter card of the first asynchronous synchronization module 20, and the PC, the adapter card 10 The configuration communication iteration of the asynchronous interface 14 is only connected to the configuration of the first-asynchronous expansion module 2(), so as shown in FIG. 4, the PC|transfer card 1 sends the first start bit. That is, the string of the first asynchronous expansion module 2G is triggered and the number of the ribs 21 is set to be a large power. Counting and connecting & PC|Transfer + 1〇 followed by the three-digit number and stored; at the same time, since the pc丨 riser card must complete all non-synchronous expansion module 2G numbering ^ Therefore, the first-asynchronous expansion module 2G transmits the trigger signal to the configuration communication of the first asynchronous interface 22 of the second asynchronous expansion module 2 through the configuration communication of the second asynchronous interface 23, The number of the serial-parallel controller U of the second asynchronous expansion module 2 is set to 0, and the power can be 'started counting and receiving the ρα adapter card (4). The serial number of the three-digit transmission is transmitted and stored; The second asynchronous expansion module 20 triggers the third asynchronous expansion module 2 () to perform encoding setting, so that all the non-synchronous expansion modules complete the encoding setting; thus, the PCI adapter card 10 can be known to be asynchronous. The number of expansion modules 20 and the information returned by each non-synchronous expansion module 20. Referring to Figure 6 is not the same as the pc|controller μ execution resource allocation program includes the following steps: output replies to the source setting request to each asynchronous expansion module S5 〇; according to each asynchronous expansion module No., judge each asynchronous expansion module back (5) 7 201217979 to overset its setting data S51; and allocate the address resource S52 of each asynchronous expansion module according to the setting data of each asynchronous expansion module. When the computer is booting to execute the operating system, the PCI controller will be scanned. At this time, the operating system will first confirm whether the PC controller completes the "extension numbering program" and the "resource allocation program". If the judgment is not completed, execute pc丨The Retry mechanism waits for the pC丨 controller to complete. After the completion of the operation, the computer operating system allocates the corresponding PCI configuration space to the corresponding non-synchronous expansion mode group. The following is a practical example to illustrate the way of configuring the space allocation. First, the serial-parallel controller of each non-synchronous expansion module is supported by four serial ports (such as RS232) and a parallel port, so it can be different. The application is adjusted to single serial 埠 (1S), two serial 埠 (2S), four serial 埠 (4S), one series and parallel 槔 (1 S1 P), two serial single 并 (2S1 p) There are eight basic working modes, such as four-string single-parallel (4S1P), single-parallel (1P), four-string and local bus (4S + L〇ca丨Bus). When the serial parallel controller of the first asynchronous expansion module includes four PCI Bars (PCI BarO, PCI Bari, PCI Bar2, PCI Bar3),

The PCI BarO in the SI corresponds to the rs232 Serial Port Base Address, which occupies a maximum of 32 address spaces. The size of the location space determines the occupied space according to the number of serial ports set.彳s), its address space is PCI Bar0 + 0x00 to PCI Bar0 + 0x07; in the case of two serials (2S), it accounts for pci BarO + OxOO to PCI BarO + OxOf, and three series 埠Or 4 series 埠 (3S, 4S) occupies PCI BarO + OxOO to PCI BarO + 0x1 f ' If it is set to no serial mode, the gar is not turned on, that is, when the PCI transfer card knows this setting, it will not cause The operating system allocates resources for this Bar 8 201217979. As for the PC 丨Bari, it is the corresponding Parallel Port Base Address, and its address space occupies PCI Bar1+0x00 to PCI Bar1+0x07, corresponding to the Local Bus Base Address. Its address space occupies PCI BaM+ΟχΟΟ to PCI Bari +0xff. If it is set to only Serial Port (for example, 1 s, 2S, 4S), this Bar is not turned on, and resources are not allocated to this Bar. PCI Bar2 is the corresponding port extension base address (Para丨丨el • Port Extension Base Address), and its address space occupies ρ〇| Bar2 + 0x00 to PCI Bar2 + 0x08. If the mode is not set in the case of a serial port, that is, if the setting is such as 1 S, 2S, 4S, 4S + Local Bus, etc., the Bar is not opened, and resources are not allocated to the Bar. As for PCI Bar3, it corresponds to its function/status basic address (〇the"

Function’Status Base Address), whose address space occupies ρ〇| Bar3 + Ox〇〇 to pci Bar3 + 0x0f), this address space is always valid and takes up a fixed amount of space. ® Therefore, 'when the PC/Ba of the serial-parallel controller sets the mode according to the number of serial tandem or serial number, when the PC丨 adapter card asks, the resource setting can be returned to the pC丨 adapter card. The following further describes the manner in which the first functional configuration space of the pC丨 adapter card corresponds to the address space of the first asynchronous expansion module, as shown in FIG. 7 , which is the first function configuration space address corresponding to The first non-synchronous expansion group also has a comparison table of addresses. When the computer operating system is assigned to the pc 丨 adapter card set as the multi-function device, the first function configuration space (Muitj_Functi〇n 〇) resource is. 201217979

BarO · OxcOOO, 8 address location ;

Bari : 0xc400, 8/256 address location '»

Bar2 : 0xc800, 8 address location ; and Bar3 · OxdOOO, 16address location. The resources obtained by the PCI adapter card from the first asynchronous expansion module are set to use PCI BarO~PCI Bar3, and BarO occupies 8 address spaces, Bari occupies 8/256 address spaces, and Bar2 occupies 8 The address space and Bar3 occupy 16 address spaces; therefore, BarO~3 of the first function configuration space corresponds to B|〇ck〇~3 of the first asynchronous expansion module. In the following, the first asynchronous expansion module is used to explain how the operating system accesses the data of different addresses of the first asynchronous expansion module through the PC 丨 adapter card, that is, the PCI adapter card performs the signal conversion process. . The serial-parallel controller of the non-synchronous expansion module is adjusted to be a serial and parallel 埠(1 S1 P) application, and the serial 埠 address space occupies a total of 8 address spaces, and the address space of the parallel basic address occupies 8 bits. The address space, the parallel address of the extended basic address occupy the 8-bit address space, and the others occupy the 16-bit address space, and assume that the address space of the first asynchronous expansion module is 〇χ〇〇. In this way, when the operating system accesses 0xc000~0xc0007, the 'non-synchronized ^^ address 送 will send the address of 0x00~0x07 to access the data of Add "ess 〇 〇 ^ ^ ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; When the adapter card is accessed from xc4 to xc4〇7, the address of the non-synchronous interface will be sent out. 8 The address of the Xingwangbu is dedicated to access the first asynchronous expansion module.丨〇ck 1 ^ ~Bei shake, in addition, if the operating system accesses 0xc800 to 〇XC8〇7, non-π half-man...Shanrenzi Τ#The address of the synchronization interface埠曰 will send out 0x10 to 0χ17 address, go to the finger, access the first non-synchronous expansion module Address Β丨ock 2 caution button on rsi J Beko, when the system is 10 201217979

When OxdOOO~〇xd〇〇F accesses, the address of the non-synchronous interface will send an address that will send 0x18~0x27 to access the first asynchronous expansion module.

Address Block 3 information. It can be seen from the above that the present invention mainly designs a non-synchronous expansion module, which has fewer pins than the PC device, and adopts an asynchronous transmission mode, and can be directly connected in series without adding a buffer, as shown in FIG. In addition, the PC 丨 adapter card 1 〇 is inserted into a pc 丨 slot 311 on the computer 30 motherboard 31 to turn it into a multi-function device, and the non-synchronous expansion modulo® &quot After the expansion of the numbering program and the resource allocation program, the computer can allocate the corresponding pc丨 configuration space to each non-synchronous expansion module after the computer 30 is turned on, so that the computer 30 operating system can view the The non-synchronous expansion group is a valid PCI device that enables the expansion of more PCI devices using only a single PCI slot of the computer motherboard. [Simple Description of the Drawings] Lutu 1: A system architecture diagram of a non-synchronous expansion system of the present invention. FIG. 2 is a schematic diagram of the non-synchronous expansion module function of the non-synchronous expansion system of the present invention. FIG. 3 is a schematic diagram of the serial connection controller signal connection of the PC|controller and the plurality of non-synchronous expansion modules of the present invention. Fig. 4 is a timing chart showing the setting of the PC丨 conversion card and the asynchronous expansion module of the present invention. Figure 5 is a flow chart of the extended numbering procedure of the present invention. Figure 6 is a flow chart of the resource allocation procedure of the present invention. Fig. 7 is a schematic diagram showing the spatial position of the function configuration of the PCI adapter card of the present invention and the different + Y [S1 201217979 expansion module space configuration position comparison table β Fig. 8 is a schematic diagram of the actual assembled structure of the present invention. Figure 9 is a schematic illustration of the assembly of the plurality of asynchronous expansion modules of the present invention.

[Main component symbol description] 10 PCI riser card 12 asynchronous interface controller 14 non-synchronous interface 21 serial parallel controller 23 second asynchronous interface 26 sequence 埠 31 motherboard 11 PCI controller 1 3 PCI interface 20 non-synchronous expansion Module 22 first asynchronous interface 25 serial 埠 30 computer 311 PCI slot

LS] 12

Claims (1)

201217979 VII, application _ patent scope: A PC 丨 adapter card for non-synchronous expansion system, which makes the non-synchronous expansion system include a plurality of non-synchronous expansion modules, 纟 synchronous expansion modules include - first and The two non-synchronous interfaces are connected in series; and the adapter card comprises a PC controller, a non-synchronized interface controller, a PC interface configured as a multi-function device, and a non-synchronous interface; wherein the pci The controller is electrically connected to the asynchronous interface controller and the And an internal extension number program, a resource allocation program and a signal conversion program; the non-synchronous interface is electrically connected to the non-synchronized interface controller, and the PCI interface is for plugging into the pc on the computer motherboard丨 interface. 2. For the PCI riser card described in claim 1, the Pc丨 controller is configured to include eight PC丨 configuration spaces. 3. If the PC丨 adapter card described in claim 1 or 2 is applied, the pci controller executes the extension numbering program to include: Output a start bit; continuously output the three-bit element of the asynchronous expansion module number; repeat the first two steps until all non-synchronous expansion modules are set to 4. 4. As described in the first or second paragraph of the patent application scope The pci riser card PCI controller executes the resource allocation program, and includes the following steps: outputting a reply resource setting request to each asynchronous expansion module; determining each asynchronous expansion module to set its data according to each asynchronous expansion module number ; and , , the group returns the address resource of the module according to the setting data of each asynchronous expansion module. Allocating each non-synchronous expansion [S] 13 201217979 5 · As described in the third paragraph of the patent application scope, the non-synchronous expansion system compatible with the PCI interface, the PCI controller 刼, "the city j 35 execution resource allocation program includes The following steps are performed: the output-recovery resource setting request is sent to each non-synchronous expansion module; and the non-synchronous expansion module replies to the setting data according to the asynchronous expansion module number; and according to the setting data of each asynchronous expansion module, Allocate the address resources of each asynchronous expansion module. Eight, schema · (such as the next page) S S1 14