Différences

Ci-dessous, les différences entre deux révisions de la page.

--- back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_4c [2023/01/10 11:55] – supprimée - modification externe (Unknown date) 127.0.0.1
+++ back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_4c [2024/08/13 11:18] (Version actuelle) – frater
@@ Ligne 1: / Ligne 1: @@
+====== INT 0x21 - 0x4c - "EXIT" - Terminate with return Code (DOS 2+) ======
+===== Request/Call: =====
+{{tablelayout?rowsHeaderSource=Auto&colwidth=""}}
+^  reg  ^  value  ^  descr  ^
+|  AH   |  0x4c   |         |
+|  AL   |  value   | return code |
+===== Return: =====
+Nothing
+===== Notes & Comments =====
+<WRAP round box>
+  * unless the process is its own parent (see AH=26h, offset 16h in PSP), all open files are closed and all memory belonging to the process is freed
+  * all network file locks should be removed before calling this function
+  * restores the terminate, Ctrl-Break, and critical error exit addresses, flushes all buffers, frees memory and returns to DOS via the termination handler address
+  * does not close FCBs
+this function is not supported in versions of DOS before 2.x, so use [[back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_00|Int 0x21,0x00]]  or [[back2root:ibm-pc-ms-dos:interrupts:int_20|Int 0x20]] to exit.
+</WRAP>
+[[start|Back]]

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