BASIC-16A

* NAME: BASIC-16A DOC 70181826000 REV A PAGE 9

0273 * PUSH DOWN STACK FORMAT 0274 * 0275 * 0276 * 0277 * PURPOSE: TO HOLD RETURN ADDRESSES AND INTERMEDIATE 0278 * RESULTS FOR RE-ENTRANT SUBROUTINES. 0279 * 0280 * ENTRY LENGTH: ONE WORD 0281 * 0282 * ENTRY FORMAT: THERE IS NO FIXED FORMAT FOR PUSH 0283 * DOWN STACK ENTRIES, OTHER THAN THE 0284 * FACT THAT EACH ENTRY OCCUPIES ONE 0285 * WORD. 0286 * 0287 * POINTERS: 0288 * 0289 * PDLP - POINTS TO THE FREE WORD 0290 * AT THE TOP OF THE STACK. IT 0291 * IS INITIALIZED TO THE ADDRESS 0292 * OF THE FIRST FREE WORD ABOVE 0293 * THE TABLES BELOW THE PUSH 0294 * DOWN STACK. 0295 * 0296 * 0297 * 0298 EJCT