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O rganisasi dan arsitektur komputer

O rganisasi dan arsitektur komputer. Pertemuan 13 : Micro-programmed Control. Control Unit Organization. Micro-programmed Control. Menggunakan instruksi sequensial untuk kontrol operasi komplek Called micro-programming or firmware Panjang word pada program- mikro :

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O rganisasi dan arsitektur komputer

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  1. Organisasi dan arsitektur komputer Pertemuan 13 : Micro-programmed Control

  2. Control Unit Organization

  3. Micro-programmed Control • Menggunakaninstruksisequensialuntukkontroloperasikomplek • Called micro-programming or firmware Panjang word pada program-mikro : • Maximum number of simultaneous micro-operations supported • The way control information is represented or encoded • The way in which the next micro-instruction address is specified

  4. Micro-instruction Types • Each micro-instruction specifies single (or few) micro-operations to be performed • (vertical micro-programming) • Each micro-instruction specifies many different micro-operations to be performed in parallel • (horizontal micro-programming)

  5. Typical Microinstruction Formats

  6. Organization ofControl Memory

  7. Control Unit

  8. Control Unit Function • Sequence login unit issues read command • Word specified in control address register is read into control buffer register • Control buffer register contents generates control signals and next address information • Sequence login loads new address into control buffer register based on next address information from control buffer register and ALU flags

  9. Functioning of MicroprogrammedControl Unit

  10. Wilkes Control • 1951 • Matrix partially filled with diodes • During cycle, one row activated • Generates signals where diode present • First part of row generates control • Second generates address for next cycle

  11. Wilkes's MicroprogrammedControl Unit

  12. Address Generation

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