Draft Document for Review April 7, 2004 6:15 pm

Index

Numerics

1000BASE-T Ethernet 11 16-port ESCON feature 93

50.0micron 99–100

62.5micron 97, 99–100

A

Additional SAP 62 Architecture modes 68 Assigned CP 64 assigned IFL 64

B

BHT 44 book 111 book jumper 30

Book replacement and connectivity 33 Branch History Table 44

C

Capacity Backup

65

 

 

 

Capacity BackUp (CBU)

16

 

 

Capacity Upgrade on Demand (CUoD)

16, 54

CBU 65, 188, 204

 

 

 

CBU activation 206

 

 

 

CBU deactivation

207

 

 

 

CBU testing

207

 

 

 

 

CEC cage

3, 8, 24, 33, 75, 80–81

 

Central Processor

47

 

 

 

Central storage 55

 

 

 

CF Structure Duplexing

168

 

 

CFCC 47

 

 

 

 

 

CFCC enhanced patch apply

160

 

CFLEVEL 161

 

 

 

 

CHA 180

 

 

 

 

 

Channel Spanning

114

 

 

 

Channel spanning

114

 

 

 

Channel sparing 95

 

 

 

Channel Subsystem 6

 

 

 

CSS 109

 

 

 

 

Channel Subsystem (CSS) 71

 

Channel Subsystem Priority Queueing

177, 180

Checksum Offload

102

 

 

 

CHPID 7, 59, 79, 110

 

 

 

CHPID Mapping Tool 7, 79, 84, 89, 114, 116

CIU 187

 

 

 

 

 

CIU Enablement feature

194, 200

 

CIU Registration 195

 

 

 

CMT 7, 114, 116

 

 

 

 

Compatibility support for z/OS

134

 

Compression Unit

43

 

 

 

Concurrent channel upgrades

71

 

6947IX.fm

Concurrent Conditioning 194

Concurrent Processor Unit (PU) conversions 5

Concurrent PU conversions

186

concurrent upgrade 46, 208

 

Concurrent upgrades

16, 186

Configuration management

116

Configurator for e-business

115

connectors 92

 

 

Control for Plan-Ahead

194

 

Cooling 25

 

 

Coupling Facility mode

69

 

CP 5, 46–47, 62, 64

 

 

CP Assist for cryptographic

12

CP Assist for Cryptographic Function 38, 42

CP Assist for Cryptographic Function (CPACF) 122 CP Cryptographic Assist Facility 43

CP pool 47 CPACF 122

CPU Management 178 CPU resources 177 Cryptographic 12

Cryptographic Asynchronous Function 120 Cryptographic function support 120 Cryptographic processors 122 Cryptographic Synchronous Functions 120 CSS 6, 61

CSS I/O priority 182 CSS Image ID 110 CSS priority 181 CSSID 61, 110 CUoD 187–188 CUoD for I/O 193 CUoD for memory 191 CUoD for processors 190

Customer Initiated Upgrade (CIU) 16 Customer Initiated Upgrades (CIUs) 16

D

Data Encryption Standard 120 DCA 76

DCM 180

DES 120

Director port cards 180 disruptive 216 disruptive upgrades 216 Distributed Converter Assembly 25 dual processor design 42

Dynamic Add/Delete of a logical partition name 61 Dynamic Addition or Deletion of a logical partition name 113

Dynamic CF Dispatching 166

Dynamic Channel-path Management 177 Dynamic CHPID Management 15 Dynamic Coupling Facility Dispatching 48

© Copyright IBM Corp. 2004. All rights reserved.

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IBM 990 manual Index, 263
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990 specifications

The IBM 990 series, often referred to in the context of IBM's pioneering efforts in the realm of mainframe computing, represents a unique chapter in the history of information technology. Introduced in the late 1960s, the IBM 990 series was designed as a powerful tool for enterprise-level data processing and scientific calculations, showcasing the company's commitment to advancing computing capabilities.

One of the main features of the IBM 990 was its architecture, which was built to support a wide range of applications, from business processing to complex scientific computations. The system employed a 32-bit word length, which was advanced for its time, allowing for more flexible and efficient data handling. CPUs in the IBM 990 series supported multiple instructions per cycle, which contributed significantly to the overall efficiency and processing power of the machines.

The technology behind the IBM 990 was also notable for its use of solid-state technology. This provided a shift away from vacuum tube systems that were prevalent in earlier computing systems, enhancing the reliability and longevity of the hardware. The IBM 990 series utilized core memory, which was faster and more reliable than the magnetic drum memory systems that had been standard up to that point.

Another defining characteristic of the IBM 990 was its extensibility. Organizations could configure the machine to suit their specific needs by adding memory, storage, and peripheral devices as required. This modular approach facilitated the growth of systems alongside the technological and operational demands of the business environments they served.

In terms of software, the IBM 990 series was compatible with a variety of operating systems and programming environments, including FORTRAN and COBOL, enabling users to access a broader array of applications. This versatility was a significant advantage, making the IBM 990 an appealing choice for educational institutions, research facilities, and enterprises alike.

Moreover, the IBM 990 was engineered to support multiprocessing, which allowed multiple processes to run simultaneously, further increasing its effectiveness in tackling complex computing tasks.

In summary, the IBM 990 series represents a significant advancement in computing technology during the late 20th century. With a robust architecture, versatile configuration options, and a focus on solid-state technology, the IBM 990 facilitated substantial improvements in data processing capabilities, making it a cornerstone for many businesses and academic institutions of its time. Its impact can still be seen today in the continued evolution of mainframe computing.
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