Configuring VME Option Boards2-9014–001867Table 2–4 Default Jumper Settings, VAC/16 Boards 0 – 7 Address Variations(DG/UX 5.4.1 or earlier)Jumper Pins Board Number Function0 1 2 3 4 5 6 7E2 1–2 In In In In In Out Out Out Address bit A313–4 Out Out Out Out Out Out Out Out Address bit A305–6 Out Out Out Out Out Out Out Out Address bit A297–8 In In In In In In In In Address bit A289–10 In In In In In In In In Address bit A2711–12 In In In In In In In In Address bit A2613–14 In In In In In Out Out Out Address bit A2515–16 In In In In In Out Out Out Address bit A24Notation IndicatesIn Jumper installed.Out Jumper removed.In or Out Jumpers that you must install (In) or remove (Out) in the field;all other jumpers are factory-configured, as indicated.NOTE:The E1 and E15 jumpers shown in the previous table also apply.Configuring Models 7401 and 7418 VME DistributedAsynchronous (VDA/128 and VDA/255) Adapter BoardsWhen you receive a VDA/128 or VDA/255 board from Data General Corporation, it isfactory configured for board 0 default switch and jumper settings and for DG/UXrevision 5.4.1 or earlier. If the board you are installing is not the first of its type,you must reconfigure the board for the position that it is to occupy. Tables 2–5through 2–8 provide switch settings and jumpering information for the VDA/128board. Tables 2–9 through 2–11 provide jumpering information for the VDA/255board. For example, to reconfigure a VDA/128 board for board 1 operation, locatethe column for board 1 in Table 2–7 or 2–8 and remove or install the jumpers asindicated in the rectangles. If your configuration includes more than one board ofthe same type, make sure that no two boards have the same board number.NOTE: Since the DG/UX operating system recognizes the VDA/128, the VDA/255,the VAC/16, and the VTC boards by the same device name, syac, no twoasynchronous controller and terminal controller boards can have the sameboard number. For example, do not configure both a VDA/128 and a VTC toboard 0; give them unique board numbers.Figure 2–4 shows the location of the jumpers and the SW1 switch pack on theVDA/128 board. Figure 2–5 shows the location of the jumpers on the VDA/255 board.For further information about the boards, refer to HPS VMEbus Host AdaptersTechnical Manual for the VDA/128 board and to VDA/255 Host Adapter TechnicalManual for the VDA/255 board.NOTE: Verify that the VME controller you plan to install is jumperedappropriately for the revision of your DG/UX operating system and for theboard position it is to occupy.Once you have installed the board jumpers, follow the directions in Chapter 3 toinstall the VDA/128 and/or VDA/255 board(s) in the card cage.
