ELITE SERIES USER MANUAL

SPECIFICATIONS

When this signal is high, the drive motor and the busy light are turned off, the input control and the output status lines are disabled, and unused sections of the drive’s electronics (Elite series) are powered down.

There is an intentional delay incorporated on both the Elite and Disk II controller cards which keeps a drive selected for a little over one second after the software gives the command to deselect the drive. This allows the software to “reselect” the drive within that period without having to wait for the motor to return to operational speed.

This delay must be taken into account when the software goes to select a drive on a different controller card so that only one drive is powered -up at any one time (an Apple II power supply consideration). (The same consideration is necessary when another device, such as Apple’s Silentype printer, which draws power from the Apple II power supply is to be selected.) No pause is required when selecting an alternate drive on the same controller since both the Elite and Disk II controllers will immediately deselect the previous drive when the new drive is selected.

The select line must remain low throughout the execution of a step or read/write command. After the drive is selected, there must be a 500ms delay before a write operation is initiated. This 500ms delay allows the drive motor to come up to speed. This delay is handled by the Apple II operating systems.

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