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--- back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_34 [2023/01/10 11:55] – ↷ Page déplacée de back2root:ibm-pc-ms-dos:interrupts:int_21_34 à back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_34 frater
+++ back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_34 [2024/04/08 08:23] (Version actuelle) – ↷ Liens modifiés en raison d'un déplacement. 23.22.35.162
@@ Ligne 22: / Ligne 22: @@
 <WRAP round box>
   * AKA the INDOS flag, this critical section flag may be checked from within an interrupt handler before requesting a DOS service. It is a semaphore that is non-zero when DOS is busy, and zero otherwise.
-  * though this flag indicates whether a DOS interrupt is active, it should not be used alone to determine DOS is safe for re-entry; Here's the standard rule for safe DOS entry: if [[back2root:ibm-pc-ms-dos:interrupts:int_28|INT 28]] is active or this flag and the critical error flag are clear then it is safe to call DOS
+  * though this flag indicates whether a DOS interrupt is active, it should not be used alone to determine DOS is safe for re-entry; Here's the standard rule for safe DOS entry: if [[back2root:ibm-pc-ms-dos:interrupts:int_28:start|INT 28]] is active or this flag and the critical error flag are clear then it is safe to call DOS
   * this interrupt should be used only during TSR initialization; the returned pointer should be used thereafter
   * this flag is cleared after a critical error ([[back2root:ibm-pc-ms-dos:interrupts:int_24|INT 24]])
@@ Ligne 31: / Ligne 31: @@
 INT [[back2root:ibm-pc-ms-dos:interrupts:int_21_5d|21,5D]] in DOS 3.x+ can be used to locate the critical error flag</WRAP>
+[[start|Back]]

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