X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 2f - multiplex - communicating applications spec

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INT 2F - Multiplex - Communicating Applications Spec - OPEN FILE
        AX = CB07h
        BX = event handle
        CX = receive file number (ignored for task queue and log queue)
            0000h  open receive control file
            N      open Nth received data file
        DL = queue
            00h task queue
            01h receive queue control file or received file, as given by CX
            02h log queue
Return: AX = 0000h successful
            BX = DOS file handle for requested file
           < 0     error code (see AX=CB01h)

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