O$XA, SYMBOL

* 0078-001-H902 (OSXA) DRAWING NO. 41285374-001-02 PAGE 2

0051 * RESTRICTIONS 0052 * 0053 * THE ROUTINE WILL WORK ON AN H316 OR DDP-516 COMPUTER WITH A DIGITAL 0054 * PLOTTER 0055 * 0056 * 0057 * STORAGE 0058 * 0059 * 1520 (OCTAL) 0060 * 848 (DECIMAL) 0061 * 0062 * 0063 * USE 0064 * 0065 * PLOT A LIST OF ALPHA-NUMERIC AND/OR SPECIAL CHARACTERS 0066 * 0067 * CALL O$XA (X,Y,HGHT,BCD,THETA,NS) 0068 * 0069 * OR 0070 * 0071 * CALL O$XA PLOT A SYMBOL LIST 0072 * DAC X LOWER LEFT CORNER OF FIRST SYMBOL,X CO-ORD. 0073 * DAC Y LOWER LEFT CORNER OF FIRST SYMBOL,Y CO-ORD. 0074 * DAC HGHT HEIGHT OF THE CHARACTER TO BE DRAWN 0075 * IN INCHES OR MILLIMETRES 0076 * DAC BCD LOCATION OF THE ALPHANUMERIC LIST 0077 * THIS MAY BE A HOLLERITH STATEMENT 0078 * OF THE ACTUAL MESSAGE. 0079 * DAC THETA THE ANGLE OF ORIENTATION OF THE CHARACTERS 0080 * MEASURED ANTICLOCKWISE FROM THE X-AXIS 0081 * DAC NS THE NUMBER OF CHARACTERS IN THE LIST 0082 * IF NS IS NEGATIVE. A SINGLE SPECIAL 0083 * CHARACTER WILL BE PLOTTED AT (X.Y) 0084 * AND BCD MUST SPECIFY THE SPECIAL 0085 * CHARACTER TO BE USED AS AN INTEGER 0086 * WITHIN THE RANGE 1 TO 25. IF NS IS 0087 * -1. THE PEN WILL MOVE TO (X,Y) WITH 0088 * THE PEN UP AND PLOT THE SYMBOL. 0089 * IF NS IS -2. THE PEN WILL MOVE TO 0090 * (X,Y) WITH THE PEN DOWN AND PLOT THE 0091 * SYMBOL. 0092 * OCT 0 END OF PARAMETER LIST 0093 * NORMAL RETURN 0094 * 0095 * N.B. IF (X) OR (Y) ARE ZERO. THEN THE 0096 * SYMBOL STRING IS CONTINUED BY USING 0097 * THE PREVIOUSLY COMPUTED X AND/OR Y 0098 * CO-ORDINATES. TO RETURN THE PEN TO 0099 * THE ORIGIN. THE CO-ORDINATES SHOULD 0100 * BE SET TO ALMOST ZERO.