CSE 2341 Computing Machine Design Example

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CSE 2341 Computing MachineDesign Example

• Bill Carroll

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CSE 2341 Machine Register Organization
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CSE 2341 Machine Partial Instruction Set

• LDA X AC ? (X)
• STA X X ? (AC)
• ADD X AC ?(AC)(X)
• SUB X AC ?(AC)-(X)
• OR X AC ?(AC)?(X)
• Instruction Format

Instruction Cycle
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CSE 2341 Machine Micro-operationsInstruction
Fetch
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CSE 2341 Machine Micro-operationsInstruction
Execution
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Control Signal Locations
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Controller Design
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Multiphase Clock Realization
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Control Signal Logic Equations

• C1 P1
• C2 P2 (LDAADDSUBOR)?P6
• C3 P4
• C4 P4
• C5 P5
• C6 STA?P6
• C7 LDA?P8
• C8 STA?P7
• C9 ADD?P8
• C10 SUB?P8
• C11 OR?P8