back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_51
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back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_51 [2023/01/10 11:55] – ↷ Page déplacée de back2root:ibm-pc-ms-dos:interrupts:int_21_51 à back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_51 frater | back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_51 [2024/04/08 01:03] (Version actuelle) – ↷ Liens modifiés en raison d'un déplacement. 185.191.171.14 |
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* The process ID number is actually the segment address of program's PSP. This in conjunction with [[back2root:ibm-pc-ms-dos:interrupts:int_21_50|INT 21,50]] is useful for TSR's to access their own file handle table in their respective [[back2root:ibm-pc-ms-dos:program_segment_prefix|PSP]]. | * The process ID number is actually the segment address of program's PSP. This in conjunction with [[back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_50|INT 21,50]] is useful for TSR's to access their own file handle table in their respective [[back2root:ibm-pc-ms-dos:hardware:informations:program_segment_prefix|PSP]]. |
* this function cannot be called while in an [[back2root:ibm-pc-ms-dos:interrupts:int_28|INT 28]] handler in DOS 2.x unless the critical error flag is set or stack corruption will occur | * this function cannot be called while in an [[back2root:ibm-pc-ms-dos:interrupts:int_28:start|INT 28]] handler in DOS 2.x unless the critical error flag is set or stack corruption will occur |
* [[back2root:ibm-pc-ms-dos:interrupts:int_21_62|INT 21,62]] is highly recommended for DOS 3.x due to a possible bug when activated from a TSR. DOS may switch to the wrong internal stack which may cause a problems with TSR's if called during an INT 28. | * [[back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_62|INT 21,62]] is highly recommended for DOS 3.x due to a possible bug when activated from a TSR. DOS may switch to the wrong internal stack which may cause a problems with TSR's if called during an INT 28. |
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see [[back2root:ibm-pc-ms-dos:interrupts:int_21_62|INT 21,62]] (Get PSP segment) for DOS 3.x applications | see [[back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_62|INT 21,62]] (Get PSP segment) for DOS 3.x applications |
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back2root/ibm-pc-ms-dos/interrupts/int_21/int_21_51.1673348120.txt.gz · Dernière modification : 2023/01/10 11:55 de frater