Functional Description
MVME197LEIG/D1
1-11
1
The Ethernet Station Address is displayed on a label attached to the VMEbus
P2 connector. In addition, the eight bytes including the Ethernet address are
stored in the configuration area of the BBRAM, with the two lower bytes of
those set to 0. That is, 08003E2XXXXX0000 is stored in the BBRAM. At an
address of $FFFC1F2C, the upper four bytes (08003E2X) can be read. At an
address of $FFFC1F30, the lower four bytes (XXXX0000) can be read. Refer to
the BBRAM, TOD Clock memory map description later in this chapter. The
MVME197LE debugger has the capability to retrieve or set the Ethernet
address.
If the data in the BBRAM is lost, the user should use the number on the
VMEbus P2 connector label to restore it. Refer to the MVME197BUG 197Bug
Debugging Package User’s Manual.
The Ethernet transceiver interface is located on the MVME197LE main
module, and the industry standard connector is located on the MVME712X
transition module.
Support functions for the 82596CA are provided by the PCCchip2. Refer to the
82596CA LAN Coprocessor User’s Manual and to the PCCchip2 chapter in the
MVME197LE, MVME197DP, and MVME197SP Single Board Computers
Programmer’s Reference Guide for detailed programming information.
SCSI Interface
The MVME197LE provides for mass storage subsystems through the industry-
standard SCSI bus. These subsystems may include hard and floppy disk
drives, streaming tape drives, and other mass storage devices. The SCSI
interface is implemented using the NCR 53C710 SCSI I/O controller.
Support functions for the 53C710 are provided by the PCCchip2. Refer to the
NCR 53C710 SCSI I/O Processor Data Manual and to the PCCchip2 chapter in the
MVME197LE, MVME197DP, and MVME197SP Single Board Computers
Programmer’s Reference Guide for detailed programming information.
SCSI Termination
The system configurer must ensure that the SCSI bus is terminated properly.
On the MVME197LE, the terminators are located on the P2 transition board.
The +5V power to the SCSI bus termination resistors is provided by the P2
transition board.
Solution Systems Technologies Inc.
720-565-5995 | [email protected] | www.solusys.com
Solution Systems Technologies Inc.
720-565-5995 | [email protected] | www.solusys.com
