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Int 21 Fn 4402 - PC/tcp Ipcust.sys - Reset Configuration Data Read Point [N]
AX = 4402h
BX = file handle referencing device "$IPCUST"
CX, DS:DX ignored
Return: CF clear if successful
AX destroyed
CF set on error
AX = error code (01h,05h,06h,0Dh) (see AH=59h)
Notes: there are a total of 378h bytes of configuration data for IPCUST.SYS
version 2.05. If less than the entire data is read or written,
the next read/write continues where the previous one ended; this
call and AX=4403h both reset the location at which the next
operation starts to zero
v2.1+ uses a new configuration method, but allows the installation
of IPCUST.SYS for backward compatibility with other software which
must read the PC/TCP configuration
See Also: AH=3Fh"IPCUST",AH=40h"IPCUST",AX=4403h"IPCUST"
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