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Altera_Forum's avatar
Altera_Forum
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16 years ago

change the clock cyle from the custom instruction

Hello,

Windows XP

Quartus: 9.0 32 Bit

SOPC Builder 9.0

Prozessor: EP1S10F780C6

I want to change the Clock-Cycle to multi-cycle for my custom instruction, but i can't change it on the SOPC Builder in the Processor custom instruction Tab.

I use the User Guide:

http://www.altera.com/literature/ug/ug_nios2_custom_instruction.pdf

on the page 29 is the information:

"The Clock Cycles field indicates the type of custom instruction:

combinational logic, multi-cycle, extended, internal register file,

or external interface. If the custom instruction is a fixed length,

multi-cycle custom instruction, you must edit this field to

specify the number of clocks. You must determine this number

based on knowledge of the custom instruction state machine. In

the case of a variable length multi-cycle custom instruction, the

Clock Cycles field displays Variable."

but I can not change the clock-cycle

in the setup interface for the custom instruction, on the Tab Interfaces I have the option Clock-Cycle to 15.

please help me

thanks

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    Have you found any solution to this? I have the same problem.

    Thanks in advance.

    --- Quote Start ---

    Hello,

    Windows XP

    Quartus: 9.0 32 Bit

    SOPC Builder 9.0

    Prozessor: EP1S10F780C6

    I want to change the Clock-Cycle to multi-cycle for my custom instruction, but i can't change it on the SOPC Builder in the Processor custom instruction Tab.

    I use the User Guide:

    http://www.altera.com/literature/ug/ug_nios2_custom_instruction.pdf

    on the page 29 is the information:

    "The Clock Cycles field indicates the type of custom instruction:

    combinational logic, multi-cycle, extended, internal register file,

    or external interface. If the custom instruction is a fixed length,

    multi-cycle custom instruction, you must edit this field to

    specify the number of clocks. You must determine this number

    based on knowledge of the custom instruction state machine. In

    the case of a variable length multi-cycle custom instruction, the

    Clock Cycles field displays Variable."

    but I can not change the clock-cycle

    in the setup interface for the custom instruction, on the Tab Interfaces I have the option Clock-Cycle to 15.

    please help me

    thanks

    --- Quote End ---