ACCTON TECHNOLOGY CORPORATION EN2220 Fast EtherCard-32 10/100 Fast Ethernet CardBus PC Card Card Enabler Program for the MS-DOS Operating System CBOPEN.EXE is the EN2220 enabling program for the MS-DOS system. Before you can use any of the DOS mode drivers, such as the Novell DOS ODI driver, the NDIS2 driver, the packet driver, or the ACCTEST.EXE test program, you have to execute CBOPEN.EXE to enable the EN2220 first. Some notebooks come with an MS-DOS software suite that is called the Card and Socket services. These services are provided with the aim to facilitate the use of CardBus PC Cards. However, since CardBus is a relatively new technology, most of the Card and Socket services software on the market today is not mature enough to fully support CardBus cards. For this reason, in this release, CBOPEN.EXE does not use the Card and Socket Services, and CBOPEN.EXE detects and programs the CardBus bridge controller in the notebook directly. If you have loaded Card and Socket services in CONFIG.SYS in your notebook, please remove them before using CBOPEN.EXE. CBOPEN can be executed from the MS-DOS command line, or it can be loaded in CONFIG.SYS as a MS-DOS device driver. To execute CBOPEN from the command line, just type: CBOPEN <Enter> To load CBOPEN as a device driver, enter the following line in CONFIG.SYS: DEVICE=C:\EN2220\CBOPEN.EXE This statement assumes you have a copy of CBOPEN.EXE in C:\EN2220. CBOPEN locates all the EN2220 PC Cards in the system and assigns I/O, IRQ, and memory resources to these cards. Power are then applied to the cards such that the cards are enabled and ready to be accessed by device drivers. The following is a typical message displayed by CBOPEN.EXE after it configured and enabled an EN2220 PC Card: Socket 0: Mem D0000, IRQ C (PCI-Routed: INT A) -- EN2220 Card, I/O Port FF00 Socket 1: Mem D1000, IRQ B (PCI-Routed: INT B) This message reports that an EN2220 card is found in socket 0. A range of I/O ports starting from FF00 (hexadecimal), and a range of memory starting from D0000 (hexadecimal), are assigned to this card. The IRQ value assigned is IRQ C. The system's IRQ routing style is PCI-Routed, and the PCI INT value is INT A. If the IRQ routing style designed into the system is ISA-Routed, CBOPEN displays a message similar to this: Socket 0: Mem D0000, IRQ 9 (ISA-Routed) -- EN2220 Card, I/O Port FF00 Socket 1: Mem D1000, IRQ 9 (ISA-Routed) After CBOPEN.EXE is loaded, it stays in the computer's memory. If an EN2220 is inserted in a CardBus socket, CBOPEN takes the actions to enable the card. If an EN2220 is removed from a CardBus socket, CBOPEN returns the resources assigned to the card back to the system. To remove CBOPEN from computer's memory, enter: CBOPEN -u to unload CBOPEN. Even though you only have to execute CBOPEN when you are using one of the MS-DOS drivers, however, the information displayed by CBOPEN is also valuable when you are configuring the EN2220 Windows 95 and Windows NT drivers. For these drivers, you have to manually assign the I/O space and memory space starting addresses, and the IRQ value, and you have to specify the system's Routing style. It is recommended to execute CBOPEN in MS-DOS and record the displayed values for these parameters. You then use the same values to configure the Windows 95 and Windows NT drivers.Download Driver Pack
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