Tekram Technology DC-820B manual Logical drive scanning sequence

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EISA Fast SCSI Caching Adapter

drives) reserved with the driver within 16. This option is important for removable media devices. If you do not reserve enough logical drives for your removable media, it may cause some of the logical drives to go unrecog- nized. To install, add a line after ASPI driver in the CONFIG.SYS:

device=c:\aspi\aspibme.sys

—>device=c:\aspi\diskdrv.sys /d n1 n2 n3 ... n8

n1 logical drives are reserved for 1st physical drive

n2 logical drives are reserved for 2nd physical drive

n3 logical drives are reserved for 3rd physical drive

....

n nx: x = 1 .. 8 and the value of nx ranges from 0 to 9

n nx=0: DC-820B scans the number of logical drives automatically

n the ordering of physical drives starts from primary to secondary and SCSI ID from 0 to 7

It is recommended that DOS 4.x or DOS 5.0 be used. For DOS 3.x, logical drive capacity is limited to 32M bytes or less.

Logical drive scanning sequence

The scanning sequence of SCSI devices that DISKDRV.SYS follows is starting from adapter #0, SCSI ID = 0, primary partition, and then extended partition. Also refer to the I/O port definition for more scanning details.

The following is an example of the scanning sequence with two DC-820Bs. The first one (adapter 0) controls two floppy drives, two BIOS INT 13H controlled SCSI HDDs, one MO device with three logical partitions (drives), and one SCSI HDD. The second one (adapter 1) controls one SCSI HDD with one logical partition, that also is the primary partition. The commands in the CONFIG.SYS would be like this:

device=c:\aspi\aspibme.sys

->device=c:\aspi\diskdrv.sys /d 3 0 0

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Contents DC-820B FCC Compliance Statement QuickInstallationGuide Shadow Adapters ROM Bios for Optimal performanceTable of Contents Eisa Fast Scsi Caching Adapter Chapter Introduction Easy DOS Driver Installation Software INSTALL.EXE Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter Board Layout and Jumper Setting Scsi Device Activity LED Indicator JP1Checking the Terminators on the Scsi Bus Floppy Enable/Disable JP3Mirroring Beeper JP2 Powering Up and Entering the System Cmos Bios Setup Cache Dram InstallationCable Connection CN1, CN2, & CN3 Running the ECU Eisa Fast Scsi Caching Adapter 1 DC-820B Adapter Hardware Options Eisa Fast Scsi Caching Adapter 2 DC-820B Adapter Firmware Options 1MB 4MB Case IDE 3 DC-820B Scsi Device Options Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter TOOLBME.EXE Utility & Disk Mirroring Initialization Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter Chapter Aspi Driver for DOS Installing the Aspi Driver Installing the DISKDRV.SYS DriverLogical drive scanning sequence Device=c\aspi\diskdrv.sys /d n1 n2 n3 ... n8LOCK/UNLOCK of removable media Disk Partition Utility Automatic translation method defaultAdaptec translation method Special translation method CHKDRIVE.EXE UtilityMylex translation method Installing the CD-ROM Driver Installing Tape Streamer DATEisa Fast Scsi Caching Adapter Chapter NetWare Drivers Installing the DC-820B drivers Aspi drivers for NetWareServer-based backup/restore support Removable media supportMountingafilesystem Duplexing Select Disk InformationEisa Fast Scsi Caching Adapter SCO Unix Driver installationDriver removal ISC Unix V Press Enter to remove the driver Press Enter to reboot Eisa Fast Scsi Caching Adapter 80C186-16 Functional Appendix B Product Support Form Eisa Fast Scsi Caching Adapter Appendix C General Troubleshooting Tips Eisa Fast Scsi Caching Adapter Eisa Fast Scsi Caching Adapter