Motorola MVME050 System Controller Module

Function

4-level priority bus arbiter

Power-on reset/front panel reset

System clock and serial clock generator

Bus timeout generator

8 28-pin sockets for EPROM/RAM

Global Interrupter

During normal operation, the MVME-050 provides all the system controller functions required for a VMEbus system.

For time access, the system software reads the time from the time clock. The system software can use two serial ports to connect to a terminal, modem or data link.

Hardcopy output is available through a Centronics-type printer port.

The EPROM/RAM socket can be used as general system memory, or to hold debug and/or diagnostic programs and scratchpad RAM.

In many multiprocessor systems, it is desirable for a process executing on one MPU module to interrupt a process executing on another MPU module.

The Global Interrupter (complete with signaller) provides this global interrupt capability.

Features

Features of the MVME050 module include.

System Controller Features.

4-1evel Priority Bus Arbiter

Power-on reset/front panel reset

System clock and serial clock generator

Bus timeout generator

Eight 28-pin sockets for EPROM/RAM

Time-of-day clock

Global interrupter

User-defined/controlled front panel display

A32/A24:D8/D16/D32 VMEbus slave interface

Front panel reset switch

Front Panel Fault Indicator and Run Indicator

General Description

The MVME050 is a combined system controller and commissioning/diagnostic module for VME systems.

The purpose of the module is to offload the functions of the system controller from the computer type module and also to provide the typical functions of each system type, such as time of day clock, printer/diagnostics.

such as time of day clock, printer/parallel port and serial port for downloading programmes from the host system.

The module is capable of housing system diagnostic and debugging monitors for end-user system troubleshooting and maintenance.

The Global Interrupter provides the ability for tightly coupled task/message passing between intelligent modules in a multiprocessor system.

The controller module allows extended addressing to support the extended (32-bit) VME bus. the EPROM/RAM slots support 32-bit data nand addresses.