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RL78 Family Quiz
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RL78 Family Quiz

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Questions and Answers

What is the address space of the RL78 Family?

  • 2 megabytes
  • 512 kilobytes
  • 4 megabytes
  • 1 megabyte (correct)

    • How many 8-bit registers or 16-bit register pairs does the RL78 Family have?

  • Six 8-bit registers or three 16-bit register pairs
  • Eight 8-bit registers or four 16-bit register pairs (correct)
  • Four 8-bit registers or eight 16-bit register pairs
  • Ten 8-bit registers or five 16-bit register pairs

    • What is the purpose of the carry flag in the RL78 Family's program status word (PSW)?

  • Indicates the presence of zero in arithmetic operations
  • Indicates overflow of arithmetic operations
  • Indicates the presence of negative numbers
  • Indicates borrow bit on subtract (correct)

    • What does the interrupt enable bit (IE bit) control in the RL78 Family?

    <p>Whether interrupts are enabled or disabled</p> Signup and view all the answers

    Where are all RAM and special function registers located in the RL78 Family's address space?

    <p>In the high 64 KB of the address space (0xF0000–0xFFFFF)</p> Signup and view all the answers

    When was the Intel 8086 microprocessor chip released?

    <p>Late 1978</p> Signup and view all the answers

    What distinguished the Intel 8088 from the 8086?

    <p>It had an external 8-bit data bus</p> Signup and view all the answers

    Which microprocessor chip is notable as the processor used in the original IBM PC design?

    <p>Intel 8088</p> Signup and view all the answers

    What architecture did the 8086 give rise to?

    <p>x86 architecture</p> Signup and view all the answers

    What limited-edition CPU was released by Intel to celebrate the 40th anniversary of the Intel 8086?

    <p>Intel Core i7-8086K</p> Signup and view all the answers

    Study Notes

    RL78 Family

    • The RL78 Family has a 16-bit address space.
    • The RL78 Family has 112 8-bit registers or 56 16-bit register pairs.
    • The carry flag in the RL78 Family's program status word (PSW) indicates whether the result of an arithmetic operation is greater than or equal to 256 (for 8-bit operands) or 65536 (for 16-bit operands).
    • The interrupt enable bit (IE bit) in the RL78 Family controls the enabling or disabling of interrupts.
    • All RAM and special function registers in the RL78 Family are located in the lower 64KB of the address space.

    Intel 8086 Microprocessor

    • The Intel 8086 microprocessor chip was released in 1979.
    • The Intel 8088 is distinguished from the 8086 by its 8-bit external data bus, whereas the 8086 has a 16-bit external data bus.
    • The Intel 8088 is notable as the processor used in the original IBM PC design.
    • The 8086 gave rise to the x86 architecture.
    • The Intel 8086 was celebrated with a limited-edition CPU release for its 40th anniversary.

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    Description

    Test your knowledge of the RL78 family with this quiz! Challenge yourself with questions about the architecture, instruction set, and features of this 16-bit CPU core for embedded microcontrollers by Renesas Electronics.

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