INHALT

* NAME: LDR-APM DOC. 70180005000 REV. E PAGE 15

0674 * THE LOADER IS INITIALLY NOT IN EXTENDED DESECTORIZING IF THE LOADER 0675 * IS STARTED AT 'XX000. IT IS INITIALLY IN EXTENDED DESECTORIZING 0676 * IF THE LOADER IS STARTED AT 'XX006. THE EXTEND- 0677 * MODE IS NOT ALTERED AT THE END OF THE CURRENT SUBPROGRAM. 0678 * 0679 * BLOCK TYPE 0-64.. SET BASE SECTOR. 0680 * 0681 * 0000110100000000 (006400) 0682 * 00NNNNNN00000000 (002000) 0683 * RLLLLLLLLLLLLLLL 0684 * ZZZZZZZZZZZZZZZZ 0685 * 0686 * N = NUMBER OF WORDS IN THIS BLOCK (ALWAYS 4). 0687 * L = 15-BIT LOCATION AT WHICH THE CROSS-SECTOR INDIRECT 0688 * WORD TABLE IS TO BEGIN. 0689 * R = 0.. LOCATION IS ABSOLUTE. 0690 * = 1.. LOCATION IS RELOCATABLE. 0691 * Z = CHECKSUM 0692 * 0693 * THE OCCURENCE OF THE FIRST 'SETB' PSEUDO-OPERATION FOR 0694 * EACH BASE SECTOR DETERMINES THE LOCATION WITH WHICH THE INDIRECT 0695 * WORD TABLE WILL BEGIN IN THAT SECTOR. THE TABLE THEN GROWS 0696 * UPWARD IN SUCCESSIVELY HIGHER LOCATIONS. 'SETB' PSEUDO-OPERATIONS 0697 * REFERENCING A SECTOR WHICH HAS BEEN PREVIOUSLY USED AS A BASE 0698 * SECTOR DO NOT RE-ORIGIN THE TABLE FOR THAT SECTOR--THE TABLE 0699 * FILLING IS RESUMED WHERE IT LEFT OFF. THE B-REGISTER SETTING 0700 * AT THE START OF THE LOAD IS TREATED EXACTLY LIKE A 'SETB' 0701 * PSEUDO-OPERATION WHICH PRECEEDS THE FIRST WORD TO BE LOADED. 0702 * 0703 * THE DEFAULT VALUE OF THE BASE SECTOR IS '00100, AT THE 0704 * INITIALIZATION OF THE LOADER. THE LOADER WILL RETAIN KNOWLEDGE 0705 * OF THE LAST LOCATION USED IN EACH BASE SECTOR. THE BASE SECTOR 0706 * IS NOT ALTERED AT THE END OF THE CURRENT SUBPROGRAM. 0707 * 0708 * BLOCK TYPES 0-70 AND 0-74.. NOT ASSIGNED. 0709 * 0710 * BLOCK TYPE 1 (ABSOLUTE PROGRAM WORDS) 0711 * BLOCK TYPE 2 (RELATIVE PROGRAMS WORDS) 0712 * 0713 * CCCCNNNNNNAAAAAA 0714 * AAAAAAAA11111111 0715 * 1111111111111111 0716 * 2222222222222222 0717 * 2222222233333333 0718 * 3333333333333333 0719 * 444.......KKKKKK 0720 * ZZZZZZZZZZZZZZZZ 0721 * 0722 * C=1=STARTING ADDRESS IS ABSOLUTE 0723 * 2=STARTING ADDRESS IS RELATIVE