IBM TIE6404-0051 1401simulPgmg free download

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ITEM NUMBER 6404-0051 (T. I. !:.) 19 pages DATE March 4, 1964 AUTHOR K. E. 1~. Donner TITLE SPOOF SIMULTANEOUS I::>ROGRAM~JG ON THE 1401 SOURCE IBM United Kingdom Ltd. , Bowmaker House Kew Bridge, Brentford Middlesex, England This paper la In the author tg original form. The objective In providing thlu copy 18 to keep you lnformed in YOUlt" fleld of interest. Plea81B do not dlotrlbute this paper to peraona outalde the IBM Company. IBM CONFIDENTIAL 6404 0051 DISTRIBUTED BY THE PROGRAM INFORMA TION DEPAR TMENT (TIE) IBM CORP. 11 Z EAST POST ROAD WlflTE PLAINS. NY Contents I General Outline p. 1 (I) What is meant by "simultaneous programming"? (2) 1401 configurations that would be best suited to this technique. II Details of Proposed Method. p. 4 (I) Characte ristic s of programs involved. {2}' The interaction of the two programs. (3) The control link between the two programs. III Some Programming Considerations. p. 7 (I) Core storage requirernents. (2) The simplest case. (3) Independent assembly and operation. (4) A master printer program and a number of process programs. IV Miscella.neous Points. p.ll V Summary. p.13 -----------------------.------------------------------------------------------ .Appendix: Two programs to illustrate the ~ I technique. SPOOF. SIMULTANEOUS PROGRAMMING OPERATIONS ON FOURTEEN-O-ONE A paper based on the fact that 1401 Computer installations which have the Print Storage special feature may well be printer bound, and have consi- derable processing time available. The purpose of this study is to show how this processing time could be used to run a simultaneous program which does not use the printe r. By use of the Te sts "Printe r Busy" and "Carriage Busy", it should be pos sible to run a second program without affecting the efficiency of the first to any great extent. The principle should be sufficiently generalised to be of advantage to many comme rcial 140 1 installations. SIMULTANEOUS PROGRAMMING ON THE 1401 1. GENERAL OUTLINE 1. ~ is tnea