Configuring VME Option Boards2-17014–001867Table 2–11 Default Jumper Settings, VDA/255 Boards 0 Through 7 AddressVariations (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 installedOut Jumper removedIn 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 E20 jumpers shown in the previous table also apply.Configuring a Model 7425 VME Terminal Controller (VTC)BoardWhen you receive a VTC board from Data General Corporation, it is factoryconfigured for board 0 default switch and jumper settings and for DG/UX revision5.4.1 or earlier. If the board you are installing is not the first of its type, you mustreconfigure the board for the position that it is to occupy. Tables 2–13 through 2–14provide jumpering information for the VTC board. For example, to reconfigure aVTC board to board 1, locate the column for board 1 in Table 2–13 or 2–14 andremove or install the jumpers as indicated in the rectangles.NOTE: If your configuration includes more than one board of the same type, makesure that no two boards have the same board number. The DG/UXoperating system recognizes VTC, VDA/128, VDA/255, and VAC/16 optionsby the same device name, syac. Make certain all the asynchronous andterminal controller boards in your system have unique board numbers.Figure 2–6 shows the location of the jumpers on the VTC board. For furtherinformation on the board, refer to the VMEbus TermServer Controller (VTC)Hardware Technical Manual.NOTE: Verify that the VME controller you plan to install is jumperedappropriately for the current revision of your DG/UX operating system.Once you have installed the board jumpers, follow the directions in Chapter 3 toinstall the VTC board(s) in the card cage.
