Table of Contents

Note: This API call is for DOS and Win16 personality only. Use Family API for portability.

2018/09/07 05:04 · prokushev · 0 Comments

Int 21H, AH=45H

Version

2 and higher

Brief

“DUP” - DUPLICATE FILE HANDLE

Family API

Input

Return

Notes

moving file pointer for either handle will also move it for the other, because both will refer to the same system file table

for DOS versions prior to 3.3, file writes may be forced to disk by duplicating the file handle and closing the duplicate

See also

AH=3Dh,AH=46h

Note

Text based on Ralf Brown Interrupt List Release 61

2018/09/04 17:23 · prokushev · 0 Comments