6.7 What does the following LC-3 program do? x3001 x3002 x3003 x3004 x3005 x3006
ID: 3595020 • Letter: 6
Question
6.7 What does the following LC-3 program do? x3001 x3002 x3003 x3004 x3005 x3006 x3007 x3008 x3009 X300A 1110 0000 0000 1100 1110 0010 0001 0000 0101 0100 1010 0000 0010 0100 0001 0011 0110 0110 0000 0000 0110 1000 0100 0000 0001 0110 1100 0100 0111 0110 0000 0000 0001 0000 0010 0001 0001 0010 0110 0001 X300D X300E X300F X3010 X3011 X3012 X3013 X3014 X3015 X3016 X3017 X3018 1111 0000 0010 0101 0000 0000 0000 0101 0000 0000 0000 0100 0000 0000 0000 0011 0000 0000 0000 0110 0000 0000 0000 0010 0000 0000 0000 0100 0000 0000 0000 0111 0000 0000 0000 0110 0000 0000 0000 1000 0000 0000 0000 0111 0000 0000 0000 0101 6.13 Notice that we can shift a number to the left by one bit position by adding it to itself. For example, when the binary number 0011 is added to itself, the result is 0110. Shifting a number one bit pattern to the right is not as easy. Devise a routine in LC-3 machine code to shift the contents of memory location x3100 to the right by three bits.Explanation / Answer
LC Implementation of Core Level
LC's usage of center level depends on a trial led from May-October 1996. The Cataloging Management Team (CMT) acknowledged the proposal originating from this investigation "that LC center level indexing be added to the répertoire of inventoriing modes" alongside different suggestions, including an arrangement of information components judged suitable to the LC condition to increase the fundamental arrangement of information components constituting the different PCC center norms. Last arrangements are being made for this execution (now planned to start no sooner than November 1, 1998 in the units of the Cataloging Directorate and the Serial Record Division).
books (counting those in JACKPHY dialects and those listed through the CIP (Cataloging in Publication) program); for things indexed through the CIP program, the subsequent records will move toward becoming LC center level records when the book is gotten and the record is updated
PC documents (after a center standard for these materials is affirmed)
music and sound accounts not generally listed under Production Level Cataloging (a type of brief inventoriing grew particularly for these materials)
uncommon books (after a center standard for these materials is endorsed)
serials
For materials done under the CIP program and those for which LC does unique indexing, basically, LC center level inventoriing turns into the base method of classifying, yet with recording groups having the carefulness to utilize listing levels to all the more almost keep present (the same number of things go out as come in). This watchfulness can be practiced as takes after: for materials in need 1-3, the indexing is "at any rate LC center level" (the expression "at any rate" in this setting implies that a group dependably has the circumspection to do the listing at a level higher than the one expressed if the group can do as such and meet its sense of duty regarding arrearage diminishment). In practicing this caution, it is expected that choices to pick another mode will be founded on the value of the material being recorded or on the overall interests of a specific client gathering or body electorate that a group works with. The main materials reliably accepting full level indexing are those assigned for a LC reference task. (The subtle elements identifying with LC center level classifying and a reexamined adaptation of the LC need framework are accessible in the Descriptive Cataloging Manual). LC will likewise keep on making utilization of outside records for duplicate indexing, including those done by PCC members.
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