Page 190

IBM 7090 - Page 190

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Table of Contents

Table of Contents3
00 Introduction to the Ibm 70906
General System Operation6
Functional Parts of Acomputer System6
7090 System Make-Up7
7090 General Logic10
- The Stored Program11
- Exercises11
Computer Operations13
Storage Word Designation13
The 7090 Word13
- Numeric Quantity (Data) Word13
- CPU Instruction Word13
- Data Channel Command Word15
Fundamental Components15
A+B = C, Print C18
Other Components, Instructions and22
- Commands22
Cpu Internal Functions24
Functional Components24
- Storage Register (SR)24
- Accumulator Register (AC)24
- Multiplier-Quotient Register (MQ)24
- Index Registers (XR)24
- Program Register (PR)24
- Address Switches (AS)27
- Tag Registers33
- Adders (AD)33
Instruction Decoding and Processing37
- Operation Decoders37
- Control Circuits37
- Pulses37
Basic Cycle37
- Ibm 7606 Multiplexor39
Multiplexor Functional Units39
- Multiplexor Clock39
- Multiplexor Storage Bus42
- Multiplexor Storage Bus Or'ing44
- Multiplexor Address Switches44
Data Flow and Control44
- CPU to Core Storage44
- Core Storage to CPU44
Cpu Data Flow and Timing46
I Cycle46
Indirect Addressing46
Instructions48
- Word Transmission Instructions48
  - Fixed-Point Arithmetic Instructions56
Floating-Point Arithmetic Instructions69
Transfer Instructions92
- Trap Mode Instructions98
- Skip Instructions100
- Control Instructions108
- Sense Indicator Instructions112
- Index Transmission Instructions120
AND and or Instructions129
- Convert Instructions133
- Floating-Point Trap142
- Ibm 7151 Console Control Unit145
- Operator's Panel147
- Customer Engineer's Test Panel159
  - Indicators159
Switches163
- Marginal Check Panel166
- Reference Information167
- Condensed Logic167
  - Adders167
Address Register167
- Program Register167
- Sense Indicators167
Sh Ift C Ounte R169
Program Counter169
- Accumulator169
- Multiplier Quotient169
- Index Registers171
- Storage Register171
- Service Aids171
- Operator's Panel177
Console Indicators177
- Indicator Lights178
- Unitized Assembly Lights & Keys179
- Switches and Keys179
- Plastic Rocker179
- Reset Motor179
- CE Panel180
  - Indicator Lights180
  - Switches and Receptacles180
- Marginal Check Panel181
MC Switches181
- MC Meters181
- Tailgate182
  - Signal Connectors182
  - Power Connector S182

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