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INSTRUCTION CODES AND COMPUTER REGISTERS Nikhil Gaba 8125
Instruction code ,[object Object],[object Object],[object Object],[object Object],Address Opcode 0 11 12 15
Stored program organization Memory 4096 X 16 Address Opcode 0 11 12 15 Processor register 0 15 Binary operand Instructions (program) Operands (data)
Direct and Indirect address ,[object Object],[object Object],[object Object]
Address Opcode 0 11 12 15 I Memory Memory 0 ADD ADD + + AC AC 22 457 operand operand 457 1 300 300 1350 1350 Direct address Indirect address 14
Basic computer registers 0 0 0 0 0 0 0 11 11 15 15 15 0 15 7 7 Program counter Address register Instruction register Temporary register Data register Accumulator Input register Output r
Functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Common bus sysytem

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Instruction codes and computer registers

  • 1. INSTRUCTION CODES AND COMPUTER REGISTERS Nikhil Gaba 8125
  • 2.
  • 3. Stored program organization Memory 4096 X 16 Address Opcode 0 11 12 15 Processor register 0 15 Binary operand Instructions (program) Operands (data)
  • 4.
  • 5. Address Opcode 0 11 12 15 I Memory Memory 0 ADD ADD + + AC AC 22 457 operand operand 457 1 300 300 1350 1350 Direct address Indirect address 14
  • 6. Basic computer registers 0 0 0 0 0 0 0 11 11 15 15 15 0 15 7 7 Program counter Address register Instruction register Temporary register Data register Accumulator Input register Output r
  • 7.