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From: rjh@ihuxj.UUCP (Randolph J. Herber)
Newsgroups: net.micro
Subject: Re: Software Piarcy & Protection schemes
Message-ID: <469@ihuxj.UUCP>
Date: Fri, 20-Apr-84 12:16:17 EST
Article-I.D.: ihuxj.469
Posted: Fri Apr 20 12:16:17 1984
Date-Received: Sat, 21-Apr-84 01:44:28 EST
Organization: AT&T Bell Labs, Naperville, IL
Lines: 21

In an article by keith Sproul at Rutgers:
	"But the concept of a serial number in every machine would be
	extremely easy for even someone as big as Apple or IBM to
	implement..  I am prety sure that some of the big IBM mainframes
	have 'serial numbers' imbeded in them somewhere."
In "IBM System/370 Principles of Operation", GA22-7000-8, page 10-49
((c) Copyright International Business Machines Corporation 1970, 1972,
1973, 1974, 1980, 1981):
	I paraphase as follows:
	STORE CPU ID - STIDP - X'B202bddd' - STIDP D2(B2)
	"Information identifying the CPU is stored at the doubleword
	location designated by the second-operand address."
	The information contains the following data (from most to least
	signifance): 8-bit version code, 24-bit CPU identification number
	(a.k.a. 'serial number'), 16-bit model number, and a 16-bit
	integer size of a machine log area used by the hardware when a
	machine error is detected by the hardware.
	The CPU identification number combined with the model number
	provides a unique CPU identification.

Randolph J. Herber, Amdahl Senior Systems Engineer, ..ihnp4!ihuxj!rjh