F4-IOS

* NAME: F4-IOS DOC 41285251000 REV C PAGE 3

0101 * 0102 * INPUT/OUTPUT DEVICE SELECTION IS ACHIEVED BY SETTING UP THE KEYWORD 0103 * WITH THE APPROPRIATE BIT PATTERN ENTERED IN THE A-REGISTER AT THE 0104 * OUTSET. THE INTERPRETATION OF THE A-REGISTER BITS IS AS FOLLOWS:- 0105 * 0106 * BIT 1 (USED BY THE COMPILER ONLY) 0107 * IF SET, CERTAIN ERROR CHECKS ARE NOT MADE. THIS OPTION 0108 * IS USED WHEN COMPILING THOSE PARTS OF THE LIBRARY WRITTEN 0109 * IN FORTRAN AND IT ALLOWS THE LIBRARY TO TAKE ADVANTAGE 0110 * OF THE COMPILER'S LOGIC TO GENERATE SPECIAL CODING. 0111 * 0112 * 0113 * BIT 2 IF SET, THE SYMBOLIC LISTING IS EXPANDED TO INCLUDE 0114 * SIDE-BY-SIDE OCTAL INFORMATION. 0115 * 0116 * BIT 3 IF SET, THE SYMBOLIC LISTING IS INHIBITED (AS LONG AS 0117 * BIT 2 IS NOT SET). 0118 * 0119 * BIT 4 IF SET, THE SYMBOLIC LISTING WILL CONTAIN INFORMATION 0120 * CONCERNING OBJECT BLOCK TEXT (NOT FOR NORMAL USAGE). 0121 * 0122 * BIT 5 NOT USED 0123 * 0124 * BIT 6 IF SET, THE OBJECT CODING BEING GENERATED WILL INCLUDE 0125 * TRACE COUPLING INFORMATION REGARDLESS OF ANY TRACE 0126 * STATEMENTS WITHIN THE PKOGRAM (OPERATOR OVERRIDE). 0127 * 0128 * BIT 7 NOT USED 0129 * 0130 * BITS 8-10 INPUT DEVICE SELECTION 0131 * 0132 * O= NOT USED 0133 * 1= ASR 33/35 KEYBOARD OR PAPERTAPE READER 0134 * 2= CARD READER 0135 * 3= PAPERTAPE READER 0136 * 4= MAGNETIC TAPE UNIT NO. 1 0137 * 5-7= NOT USED 0138 * 0139 * BITS 11-13 SYMBOLIC LISTING DEVICE SELECTION 0140 * 0141 * 0= SUPPRESS SYMBOLIC LISTING 0142 * 1= ASK 33/35 TYPEWRITER 0143 * 2= LINE PRINTER 0144 * 3= PAPER TAPE PUNCH 0145 * 4= MAGNETIC TAPE UNIT NO. 2 0146 * 5-7= NOT USED 0147 * 0148 * BITS 14-16 BINARY OUTPUT DEVICE SELECTION 0149 * 0150 * O= SUPPRESS BINARY OUTPUT