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back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_4c
Table des matières
INT 0x21 - 0x4c - "EXIT" - Terminate with return Code (DOS 2+)
Request/Call:
| reg | value | descr |
|---|---|---|
| AH | 0x4c | |
| AL | value | return code |
Return:
Nothing
Notes & Comments
- 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 Int 0x21,0x00 or Int 0x20 to exit.
back2root/ibm-pc-ms-dos/interrupts/int_21/int_21_4c.txt · Dernière modification : de frater
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