C210-001-6601 (FRTN) 3C NO.180463000 REV. D

* C210-001-6601 (FRTN) 3C NO.180463000 REV. D PAGE 4

0151 * THE DATA POOL CONSISTS OF FOUR FORMS OF INFORMATION 0152 * 1. THE ASSIGNMENT TABLE CONSISTS OF 5 WORDS, STARTS 0153 * AT THE END OF THE COMPILER AND EXTENDS TOWARD THE 0154 * END OF MEMORY. 0155 * 0156 * TDCCCCCCCCCCCCCC....DP(A+4) 0157 * CCCCCCCCCCCCCCCC....DP(A+3) 0158 * CCCCCCCCCCCCCCCC....DP(A+2) 0159 * IIAAAAAAAAAAAAAA....DP(A+1) 0160 * NRRRMMMLLLLLLLLL....DP(A) 0161 * 0162 * T = TRACE TAG 0163 * D = DATA TAG 0164 * C = SIX 8-BIT CHAR. OR BINARY CONSTANT 0165 * I = ITEM USAGE (IU) 0166 * 0 = NO USAGE 2 = VAR/CONSTAN^ 0167 * 1 = SUBPROGRAM 3 = ARRAY 0168 * A = ASSIGNMENT ADDRESS 0169 * N = NAME TAG (NT) 0170 * 0 = NAME 1 = CONSTANT 0171 * R = ADDRESS TYPE (AT) 0172 * 0 = ABSOLUTE 3 = STRING-REL 0173 * 1 = RELATIVE 4 = COMMON 0174 * 2 = STRING-ABS 5 = DUMMT 0175 * M = ITEM MODE (IM) 0176 * 1 = INTEGER 5 = COMPLEX 0177 * 2 = REAL 6 = DOUBLE 0178 * 3 = LOGICAL 0179 * 4=COM/EQU LINK 0180 * 2. THE DO TABLE 'FLOATS' ON TOP OF THE ASSIGNMENT 0181 * TABLE AND CONTAINS THE INFORMATION NEEDED TO CLOSE-OUT 0182 * A DO-LOOP, EACH ENTRY IS 5 WORDS. 0183 * 00IIIIIIIIIIIII 0184 * 00TTTITTTTTTTTT 0185 * 00XXXXXXXXXXXXX 0186 * 00UUUUUUUUUUUUUU 0187 * 00NNNNNNNNNNNNNN 0188 * I = INITIAL VALUE/OR RPL 0189 * T = TERMINAL VALUE 0190 * X = INDEX 0191 * U = INCREMENT 0192 * N = STATEMENT NUMBER 0193 * 0194 * 3. THE EXPRESSION TABLE (A0I TABLE) 'FLOATS' ON TOP 0195 * THE DO TABLE AND CONSISTS OF 2 WORD ENTRIES. 0196 * 0197 * NOOOOOOOOIIIIIII.....DP(I+1) 0198 * 00AAAAAAAAAAAAAAAA...DP(I) 0199 * N = NEGATION INDICATOR 0200 * O = OPERATOR