INHALT

* NAME: LDR-APM DOC. 70180005000 REV. E PAGE 5

0174 * SECTOR USED, PRESS START. THE COMPUTER WILL HALT. 0175 * SET THE A REGISTER TO THE PROPER INPUT DEVICE 0176 * CODE. PRESS START, 'LC' WILL BE TYPED AND THE 0177 * COMPUTER WILL HALT. 0178 * 0179 * (F) AT THIS POINT THE DEFAULT INPUT DEVICE 0180 * MAY BE SET. INSERT THE DESIRED OCTAL 0181 * DEVICE CODE IN LOCATION XX000 0182 * WHERE XX IS THE SECOND SECTOR IN WHICH 0183 * THE LOADER WILL RESIDE. THE OCTAL 0184 * DEVICE CODE OCCUPIES BITS 14-16. 0185 * WHERE: 0186 * 1 = HIGH SPEED PAPER TAPE READER 0187 * 2 = ASR PAPER TAPE READER 0188 * 3 = MAGNETIC TAPE INPUT 0189 * 4 = DISC INPUT 0190 * 5 = CARD INPUT 0191 * 0192 * IF MAGNETIC TAPE IS SELECTED. BITS 11-13 0193 * SHOULD BE SET WITH THE PHYSICAL TAPE NUMBER 0194 * FROM WHICH LOADING WILL TAKE PLACE. AT 0195 * LOAD TIME THE TAPE MUST BE POSITIONED 0196 * AT THE BEGINNING OF THE FILE. 0197 * 0198 * (G) LOAD PAL-AP IN 'ZZ000, WHERE ZZ IS ANY CONVENIENT 0199 * SECTOR, CHANGE THE CONTENTS OF 'ZZ575 FROM 'ZZ600 0200 * TO 'XX600 WHERE XX IS THE LAST OF THE FOUR/FIVE 0201 * SECTORS IN WHICH THE LOADER WAS PLACED. (THIS 0202 * WILL BE IN THE STARTING LOCATION OF A '177 WORD 0203 * BOOTSTRAP PROGRAM) 0204 * 0205 * (H) EXECUTE PAL-AP, DUMPING BETWEEN 'YY000 AND 0206 * 'XX577. THE OUTPUT TAPE IS YOUR NEW SELF 0207 * LOADING LOADER. 0208 * 0209 * 0210 * 0211 * ******************************************************************* 0212 * * LOADER OPERATING PROCEDURE * 0213 * ******************************************************************* 0214 * 0215 * 1. ONCE THE LOADER IS IN MFMORY, SET THE PROGRAM COUNTER TO 0216 * 'XXO00 OR XX006, WHERE 'XX IS THE FOURTH SECTOR OCCUPIED 0217 * BY THE LOADER, SET THE A-REGISTER TO THE STARTING LOCA- 0218 * TION AT WHICH LOADING IS TO BEGIN. IF THE A-REGISTER IS 0219 * CLEAR A STARTING LOCATION OF '01000 WILL BE ASSUMED. 0220 * TO FORCE A STARTING LOCATION OF ZERO, TURN ON THE SIGN 0221 * BIT OF THE A-REGISTER. IF 'XX000 IS CHOSEN THEN 'NORMAL' 0222 * MODE LOADING IS TAKEN (IMPLIED LXD). IF 'XX006 IS CHOSEN, 0223 * THE EXTENDED MODE (IMPLIED EXD) LOADING IS TAKEN.