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Chapter 2
Installing the Hardware
2.1 Introduction 8
2.2 System Requirements 8
2.3 Configuring the Hardware 9
2.3.1 Selecting the MVIP Clock Master
2.3.2 Configuring the MC1 Board's I/O Address
2.4 Installing the Hardware 12
2.5 Connecting the MC1 Board to the MC1 Bus 13
2.1 Introduction
- This chapter describes how to configure your MC1 board, install it in your system, and connect it to the MVIP and MC1 busses.
2.2 System Requirements
- Since the MC1 board is used with additional MVIP-compatible boards, the exact system requirements depend on your system configuration. There is usually only one MC1 board in each PC although as many as four can be installed in one chassis.
- A typical PC chassis should have:
- At least 6 Mb of memory (excluding operating system requirements).
- An uninterruptable power supply (UPS). Although a UPS is not strictly
required, it is strongly recommended for increased system reliability. Note
that it need not power the PC's video monitor.
- An MC1 interconnect cable P/N 2783.
- An MVIP-90 connector cable.
2.3 Configuring the Hardware
- Before you install the MC1 board, you need to:
- Configure the MC1 board's I/O address.
2.3.1 Selecting the MVIP Clock Master
- In a PC chassis, MVIP boards are connected to one another with an MVIP-90 bus cable. One of the boards in the chassis must be the MVIP clock master, driving the bus clock by which all other boards synchronize their communications. All other boards must be MVIP clock slaves, synchronized by the clock master.
- Some boards can act as the MVIP clock master, while others cannot. (To determine the capabilities of other boards, see the documentation which came with those boards.) MC1 boards can be configured as either MVIP clock masters or clock slaves using software. MC1 boards are usually configured as the MVIP clock master unless there are multiple MC1 boards in the PC chassis.
- In your system, position the MVIP clock master board in the center of the MVIP bus cable. All other boards should be distributed evenly around the MVIP clock master, as shown in Figure 5.
Figure 5. Arranging MVIP Boards in Your System
2.3.2 Configuring the MC1 Board's I/O Address
- The MC1 board occupies 16 contiguous I/O addresses. These addresses must be unique and must not conflict with any other devices in your system.
- The default factory setting for the base address is 0x0640. If you need to select another base address, set DIP switch S1 (shown in Figure 6) as directed in the following table:
- The most common type of address conflict is with devices that only control the lower 10 address bits (0 through 0x3FF) of the AT bus. In this case, an address conflict at 0x0140 does not go away when the board is set to address 0x2140, but does get resolved when the board is set to address 0x0160.
Note: Make a note of the base I/O address that you set the board to use. The software installation program you use may prompt you for this address later.
Figure 6. Location of DIP Switch S1
2.4 Installing the Hardware
- If necessary, configure the board's I/O address as described in Section 2.3.
- Turn off the computer and disconnect it from the AC power source. Remove the cover and set it aside.
- Arrange your boards in adjacent ISA bus slots, in the order you determined in Section 2.3.1.
Make sure each board's ISA bus connector is seated securely in a slot.
- Connect the MVIP bus ribbon cable to the MVIP connectors on your boards, so that each board is positioned on the cable in the location you determined.
On the MC1 board, make sure that pin 1 of the cable (marked with a colored stripe) is on the side of the connectors away from the metal end bracket.
- Fasten each board's end bracket to the back of the chassis.
- Replace the cover and reconnect the computer to its AC power source.
2.5 Connecting the MC1 Board to the MC1 Bus
- MC1 boards are connected together with SCSI-3 type connectors in a daisy chain fashion. Be sure to terminate the MC1 interconnect cable with SCSI-3 terminators on both ends.
- In order to meet FCC emissions requirements, the cables must be shielded. Failure to use MC1 cable P/N 2783 may negate FCC emissions requirements.
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