INT 60 u - HP 95LX System Manager - COMMUNICATIONS SERVICE "M_COMM_INIT"
        DI = 0E00h
        STACK:  2 WORDs unused dummies (for calls from high level languages)
                DWORD   pointer to ???
Return: ???
        STACK unchanged
SeeAlso: INT 60/DI=0E01h,INT 60/DI=0E02h

Values for error code:
 0000h  successful
 FFF1h  "E_BUSY"
 FFF2h  timeout
 FFF3h  framing error
 FFF4h  parity error
 FFF5h  overrun error
 FFF6h  "E_EMPTY"
 FFF7h  "E_CONECT"
 FFF8h  not open
 FFF9h  out of memory
 FFFAh  buffer overflow
 FFFBh  "E_NOFIT"
 FFFCh  unsupported
 FFFDh  "E_IVOPR"
 FFFEh  "E_IVCHN"
 FFFFh  "E_REOPEN"

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