Application programs should not ordinarily attempt to distinguish between files on local and remote devices.Checks whether the specified handle refers to a file or device that is local (located on the PC that is running the program) or remote (located on a network server).
Call with:
AH = 44H
AL = 0AH
BX = handle
Returns:
If function successful
Carry flag = clear
DX = attribute word for file or device
bit 15 = 0 if local
1 if remote
If function unsuccessful
Carry flag = set
AX = error code
Notes:
Application programs should not ordinarily attempt to distinguish between files on local and remote devices.
If the network has not been started, control returns to the calling program with the carry flag set and error code 0001H (invalid function) in register AX.
Example:
Check if the handle saved in the variable fhandle is associated with a file or device on the machine running the program or on a network server.
fhandle dw ? ; device handle
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mov ax,440ah ; function & subfunction
mov bx,fhandle ; file/device handle
int 21h ; transfer to MS-DOS
jc error ; jump if function failed
and dx,8000h ; test local/remote bit
jnz remote ; jump if network handle
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