TANDY 2500 RSX  (250-1620/1621)   Hard Drive Settings   Faxback Doc. # 3307

Your computer is shipped with a 60MB SmartDrive (IDE hard drive). A jumper
on Pin pair C/D on the bottom of the SmartDrive configures it for use as the
only IDE drive in the system. Do not alter the jumper setting if you have
only one IDE drive.

If you install another IDE drive, you must change the jumper settings for
the 60MB SmartDrive. Determine whether you want to use the 60MB SmartDrive
as the primary drive or the secondary drive. Then, refer to the following
table to set the jumpers.

Jumper
Pin Pairs        Setting     Function

C/D             Jumpered*    Indicates that the drive is the only IDE drive
                             installed.

C/D + DSP       Jumpered     Indicates that this is the primary drive in a 
                             system with two IDE drives.
              Not-Jumpered   Indicates that this is the secondary drive in
                             a system with two IDE drives.

E1            Not-Jumpered*  Reserved for factory use.

* Factory (default) setting.

Note: Refer to the documentation included with the drive you are adding for
instructions on configuring it as the primary or secondary drive.

DRIVE CAUTIONS:

As you use the 60MB SmartDrive, keep the following information in mind:

* Your computer dealer can help you select a hard drive that is compatible
  with the 60MB SmartDrive. Do not install the TANDY 240MB SmartDrive
  (25-4126). This drive is incompatible with the 60MB SmartDrive.
* The 60MB SmartDrive is configured with the AUTO option of the Setup
  utility. Do not use the AUTO option to configure multiple hard drives. 
  Refer to hard drive documentation for the hard drive configuration
  parameters. Record the drive parameters on the worksheet near the end of
  the computer user's guide. Run Setup to enter the drive type or the number,
  head landing zone, and sectors per track.


(jej-11/07/94)