Graduate Thesis Or Dissertation
 

An interface of a magnetic disc for a PDP-8/L computer system

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/ms35td21k

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  • This thesis is concerned with the design of the interface--Read, Write and control circuits--of the magnetic disc with the PDP-8/L Computer system. The interface was designed to operate under the Data Break transfer mode of the computer and is compatible with the computer manufacturer's system. The Data Break option was built. The circuit components for writing and reading were experimentally determined for the best performance and, the cost of the major units of the system, excluding the labor cost, was estimated. The interface was constructed on eight printed circuit cards, using standard TTL IC chips, transistors, resistors and operational amplifiers. Since data is being stored and retrieved in parallel this storage system is faster than the conventional serial transfer. The interface has been constructed such that DEC's software for a single disc and diagnostic software can be used. This paper indicates how a simple, inexpensive and reliable interface can be developed by using commercially available integrated circuits.
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  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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