INHALT

* NAME: LDR-APM DOC. 70180005000 REV. E PAGE 6

0224 * 0225 * 2. ON THE DDP-516, H316 0226 * SET THE B-REGISTER WITH THE LOCATION AT WHICH 0227 * THE CROSS-SECTOR INDIRECT WORD TABLE IS TO BEGIN. IF THE 0228 * B-REGISTER IS CLEAR, A STARTING LOCATION OF -00100 WILL 0229 * BE ASSUMED. THIS WILL BE '40100 IF NORMAL LOADING 0230 * (LXD) INTO UPPER 16K. 0231 * 0232 * 0233 * NOTE.. ON COMPUTERS WITHOUT THE MEMORY LOCKOUT OPTION, 0234 * THE CROSS-SECTOR INDIRECT WORD TABLE MUST BE LOCATED IN 0235 * SECTOR ZERO OR IN THE SAME SECTOR AS THE INSTRUCTION, ON 0236 * COMPUTERS WITH THE MEMORY LOCKOUT OPTION THE TABLE 0237 * MAY BE IN ANY SECTOR. THE CROSS SECTOR INDIRECT WORD 0238 * TABLE LOCATION MAY BE CHANGED DURING THE LOAD BY 0239 * OCCURRENCES OF THE DAP-16 PSEUDO-OPERATION 'SET BASE 0240 * SECTOR' (SETB). IF THE PROGRAM LOAD DOES NOT INCLUDE 0241 * A 'SET BASE SECTOR' PSEUDO-OPERATIONS PRIOR TO THE FIRST 0242 * INSTRUCTIONS WHICH REQUIRES DESECTORING, THE PROGRAMMER MUST 0243 * DIRECT THE LOADER TO SELECT THE PROPER SECTOR INITIALLY. IF 0244 * THIS IS A 'NORMAL' LOAD, START AT 'XX000 AND THE BASE 0245 * SECTOR WILL INITIALLY BE IN THE SAME 16K AS THE PROGRAM. 0246 * IF THE PROGRAM BEING LOADED IS TO RESIDE ABOVE THE 0247 * LOADER, CHANGE LOCATION 'S5000 FROM 'XX700 TO 'VV700 0248 * WHERE SS IS THE NEXT TO THE LAST SECTOR OCCUPIED BY THE 0249 * LOADER, XX IS THE LAST SECTOR OCCUPIED BY THE LOADER 0250 * AND 'VV IS THE LAST SECTOR IN CORE. FOR EXAMPLE, THE 0251 * LOADER RESIDES IN LOCATIONS '4000-7577 AND A PROGRAM IS 0252 * TO BE LOADED AT LOCATIONS 12000-14000 IN AN 8K CORE. 0253 * THE CONTENTS OF LOCATION '6000 OF THE LOADER MUST BE 0254 * CHANGED FROM '7700 TO '17700. 0255 * 0256 * 3. PRESS 'START', THE COMPUTER WILL HALT. SET BITS 14-16 OF THE 0257 * A-REGISTER WITH THE OCTAL DEVICE CODE. WHERE: 0258 * 0259 * 1=HSR(HIGH SPEED PAPER TAPE READER) 0260 * 2=ASR(ASR PAPER TAPE READER) 0261 * 3=MAGNETIC TAPE 0262 * 4=DISC INPUT 0263 * 5=CARD INPUT 0264 * 0265 * IF MAGNETIC TAPE (3 IN BITS 14-16) IS SELECTED, BITS 11-13 0266 * OF THE A-REGISTER SHOULD BE SET WITH THE PHYSICAL TAPE 0267 * NUMBER FROM WHICH THE PROGRAM WILL BE LOADED. THE TAPE MUST 0268 * BE POSITIONED AT THE BEGINNING OF THE FILE. 0269 * 0270 * DISC INPUT(4 IN BITS 14-16) IS ONLY MEANINGFUL WHEN 0271 * USED IN CONJUNCTION WITH "DOP", PROGRAM NO, 180021000. 0272 * IF DISC INPUT IS SELECTED BY THE USER, LDR-APM 0273 * GIVES CONTROL TO DOP AND DOP ASKS THE USER FOR