Copyright (c) 1995-1999 VIA Technologies Inc. AGP 4X/133 Bus Master(Ultra DMA) PCI IDE Driver ReadMe.Txt for OS/2 * This readme file is used to provide the information for installation, Enable/Disable DMA and Uninstall "AGP 4X/133 Bus Master PCI IDE Driver". The AGP 4X/133 Bus Master IDE controller is a high performance Bus Master PCI IDE controller. This "AGP 4X/133 Bus Master PCI IDE Driver" distribution floppy is used to utilize the DMA operation of your Hard disk/CD-ROMs drives in order to release the I/O loading from the CPU. You could refer to the related section to install the driver individually. CONTENTS *********************** 1) System Requirements 2) Distribution Package Contents 3) OS/2 Driver 4) Package Version Identify 5) Verifying Installation of the Driver 6) Notes 1) System Requirements * This package should be installed on the VIA Bus Master IDE chipset, VT82C580VP or later, and others' chipset will not be supported. * The "AGP 4X/133 Bus Master PCI IDE Driver" supports the following Operation System. Operation System Version OS/2 Warp 3.0 or Warp 4.0 2) Distribution Package Contents This distribution floppy is compress by auto uncompressing format. You could uncompress it by execute it. The floppy by uncompressing includes these files are listed below. ROOT: README.TXT This file. RELEASE.TXT Released Note VIAIDE.DDP For OS/2 DDINSTALL VIACD.FLT VIAIDE.ADD OS2.EXE 3) OS/2 Driver ************************* ** Driver Installation ** ************************* You can choose one of the following methods to install driver : Boot from the OS/2 hard disk and type the "DDINSTAL" command to install the device driver. C> DDINSTAL After the "DDINSTAL", the original CONFIG.SYS will be renamed to CONFIG.VIA and add two lines into the CONFIG.SYS. BASEDEV=VIAIDE.ADD BASEDEV=VIACD.FLT ************************ ** Enable/Disable DMA ** ************************ The default setting for the hard disk is DMA enabled and for the CD-ROM is DMA disabled. You can enable or disable a single device by setting the following parameters after VIAIDE.ADD in CONFIG.SYS. /A:[0|1] Select primary or secondary channel. /U:[0|1] Select master or slave device in the same channel. /BM Enable DMA mode. /!BM Disable DMA mode. Example: BASEDEV=VIAIDE.ADD /A:0 /U:0 /BM /A:1 /!BM This setting will enable the DMA mode for the device connected under primary channel master position and disable the DMA mode for the entire secondary channel. Note: The undefined position in above, primary channel slave position, is using the default setting. After the changing, you should shutdown the OS/2 Wrap and reboot again to active the change. *************************** ** Driver Uninstallation ** *************************** You could remove the "AGP 4X/133 Bus Master PCI IDE Device Driver for OS/2" by removing above two lines from the config.sys file and deleting the VIA drivers named "VIAIDE.ADD" and "VIACD.FLT" located in the \OS2 directory by manual operations. After the reboot, the "AGP 4X/133 Bus Master PCI IDE Driver" is not existing in your system. 4) Package Version Identify You could check this distribuation version and release date by using the DATE\TIME displayed by using dir/p command, e.g : OS2 EXE 27,897 mm-dd-yy hh:mi a OS2.EXE The version number reads as 2.hh.mi, which was released on the date of mm/dd/yy. 5) Verifying Installation of the Driver 1. Open the "OS/2 system" in the desktop. 2. Open the "System Setup" in the "OS/2 System". 3. Open the "Hardware Manager" in the "System Setup" 4. You will find "VIAIDE.ADD" at device page for Hard Drive or you will find "VIACD.FLT" at device page for CD-ROM. 6) Notes * It is recommended to install the CD-ROM which is not on the same channel with the hard drive for the performance issue. If you play VCD or DVD abnormally on some CD-ROM or DVD-ROM which is on the same channel with hard drive, we recommand you to setup the CD-ROM or DVD-ROM on the separatly channel.