Service Manuals, User Guides, Schematic Diagrams or docs for : apple disk profile Profile_Communication_Protocol

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                         PROFILE COMMUNICATION PROTOCOL




      This document describes the communication protocol between the
Profile hard disk drive and a host computer. Profile is connected to the
hO'st by a data bus, a CM]) (command) input and a CRES (controller reset)
input,a BSY (busy) output, and several other signal lines which are
described in the Profile Controller ~ardware External Reference
Spec~fication and will not be covered in this document.


       When Profile is turnen on, its processor waits 18 seconds for the
disk

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