Introduction

Compliance Report

 

 

1.2.1.3Availability Node Director

The Availability Node Director (AvND) resides on each system node and its main task is to maintain the node-scoped part of the software system model described above.

The AvND coordinates local fault identification and repair of components and furthermore facilitates any wishes it receives from the Availability Director.

The AvND watches for components arriving or leaving the system and summarizes this information in a Service Unit (SU) presence state, and keeps the AvD informed about the current status and changes. The AvND is capable of disengaging, restarting and destroying any component within its scope. This may occur according to AvD instructions or as a result of an administrative action or automatically triggered by policies.

1.2.1.4Availability Agent

The Availability Agent (AvA) is the linkable library that provides a means for the AvSv to exchange information with system components overseen by the process in which this library is planted. It does not run as a separate thread.

The AvA implements the SAF Availability Management Framework API and provides the entry- point for accessing AMF functionality.

1.2.1.5Cluster Membership Agent

The Cluster Membership Agent (CLA) is a linkable library that enables AvSv to provide information about nodes in the cluster to the process in which it is linked. It does not run as a separate thread.

The CLA implements the SAF Cluster Membership Service Library functionality and provides an entry point to the SAF CLM functionality.

1.2.2Compliance Report

Availability Service conforms to the Application Interface specifications mentioned in the following SAF documents:

zSAI-AIS Volume 1: Overview and Models (SAI-AIS-B.01.01)

zSAI-AIS Volume 2: Availability Management Framework (SAI-AIS-AMF-B.01.01)

zSAI-AIS Volume 3: Cluster Membership Service (SAI-AIS-CLM-B.01.01)

Table 1-1 Compliance Table - Availability Service, SAI-AIS Volume 1: Overview and Models

Section

Description

Supported

Notes

 

 

 

 

1

Document Introduction

NA

Informational

 

 

 

 

2

Overview of the AIS

NA

Informational

 

 

 

 

3

Programming Model and Naming

Yes

 

 

Conventions

 

 

 

 

 

 

16

Availability Service Programmer’s Reference (6806800C44B)

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Motorola 6806800C44B manual Introduction Compliance Report, Section Description Supported
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6806800C44B specifications

The Motorola 68000 series, particularly the 68000 microprocessor, has been a cornerstone in the evolution of computing technology. The Motorola 68000 was introduced in 1979 and is renowned for its powerful performance and versatility. One specific variant in this series, the Motorola 68000C44B, offers a remarkable blend of features that cater to both consumer and industrial applications.

The Motorola 68000C44B operates at a clock speed of 25 MHz, allowing it to handle complex instructions swiftly. With a 32-bit data bus, this microprocessor can manage a substantial amount of data simultaneously, enhancing its overall processing capability. The architecture supports a 24-bit address space, meaning it can address up to 16MB of RAM, which was a significant advancement during its time.

One of the standout characteristics of the 68000C44B is its CISC (Complex Instruction Set Computing) architecture. This design paradigm allows the microprocessor to execute multi-step operations with a single instruction, optimizing program efficiency and reducing the load on the CPU. Moreover, the 68000 family is known for its rich instruction set, which provides developers with a wide range of options for programming.

Another important feature of the Motorola 68000C44B is its support for multitasking and memory management. It offers various modes of operation, including user and supervisor modes, facilitating the development of sophisticated operating systems. The ability to work with virtual memory further enhances its utility in complex applications where resources must be managed effectively.

The 68000C44B is also distinguished by its robust compatibility with a range of peripherals and support for various input/output interfaces. This versatility makes it suitable for real-time applications, embedded systems, and consumer electronics.

In terms of power consumption, the Motorola 68000C44B is designed with efficiency in mind, making it a favorable choice for battery-operated devices. Its performance-to-power ratio allows developers to create compact and efficient products without sacrificing functionality.

Overall, the Motorola 68000C44B embodies a blend of performance, efficiency, and compatibility, making it a significant microprocessor in the history of computing. Its technologies and characteristics have laid the groundwork for advancements in microprocessor design, influencing generations of devices. The enduring legacy of the 68000 series continues to resonate in modern computing systems, showcasing the foundational impact of early microprocessors like the Motorola 68000C44B.
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