The Logotron Logo Tutorial and Reference Guide

LOGOTRON LOGOTRON LIMITED 5 GRANBY STREET, LOUGHBOROUGH LEICESTERSHIRE LE11 3DU TEL. 0509 230248 SAVING PROCEDURES ON TAPE AND ECONETSome customers have reported problems with the primitiveSAVE. when trying to save files on cassette or on EconetFileserver.The way round this problem is to create two small procedures.The first saves your entire workspace and the second savesnamed procedures or global variables. There is no problemwith the primitive LOAD on either cassette or Econet.TO SSAVE : FILENAME(* SPOOL : FILENAME) POALL (*SPOOL)ENDTO SSSAVE : FILENAME : PROCNAMES(*SPOOL : FILENAME) PO : PROCNAMES (*SPOOL)ENDImagine you have created three procedures, TRIANGLE, SQUARE,PENTAGON and one global variable, ANGLES.SSAVE "SHAPES saves the entire workspace in a file calledSHAPES.SSSAVE "SHAPES "SQUARE would save the single procedure"SQUARE in the file.SSSAVE "SHAPES [SQUARE TRIANGLE "ANGLES] would save twoprocedures and the global variable ANGLES.In short the procedures work exactly as the primitiveSAVE as documented in the manual.CONTENTSTutorial PagesSection One – Installation 1 .. 3Section Two – Introduction 4 .. 7Section Three – Meet the Turtle 8 .. 10Section Four – Teaching Logo new tricks 11 .. 13Section Five – Turtles can remember 14 .. 16Section Six – Changing Logo’s mind 17 .. 19Section Seven – Making more changes 20 .. ...