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ERROR L121: IMPROPER FIXUP SEGMENT: ABSOLUTE OFFSET: 0023H

Agustin Pedroso

I got this error when linking with uVision version 1.24 (using <2Kb memory model):
ERROR L121: IMPROPER FIXUP
MODULE: SIO.obj (SIO)
SEGMENT: ABSOLUTE
OFFSET: 0023H

And I fixed the error by disabling "Enable variable overlaying" option in "Linking" tab of "BL51 Code Banking Linker" (Options menu).

Could anybody tell me where is this option in the latest version (uVision2 2.30), to fix the same error I have found when upgrading to the new IDE version?

Thanks.

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    You may actually want to fix the problem than simply rely on a side-effect of a compile switch.

    The error message you receive:

    ERROR L121: IMPROPER FIXUP
MODULE: SIO.obj (SIO)
SEGMENT: ABSOLUTE
OFFSET: 0023H

    Tells me that this is either an assembler routine or that it is the vector for an interrupt service routine (because the segment is ABSOLUTE).

    The error improper fixup indicates that the target address (for an ajmp) or for a relative offset is too far away.

    The offset of 0023H tells me that the problem happens at the interrupt vector location. The only thing that would cause this problem there is an AJMP to an ISR that is too far away. C51 inserts AJMP instructions in the interrupt vector only in ROM(SMALL). C51 inserts LJMPs in ROM(COMPACT) and ROM(LARGE).

    So, if you wrote in assembly, I'd change the AJMP at addtess 23h to an LJMP.

    It you are using C, this problem should not occur.

    If none of my advice helps, you may actually want to contact technical support for assistance with this problem.

    Jon

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  • 0

    You may actually want to fix the problem than simply rely on a side-effect of a compile switch.

    The error message you receive:

    ERROR L121: IMPROPER FIXUP
MODULE: SIO.obj (SIO)
SEGMENT: ABSOLUTE
OFFSET: 0023H

    Tells me that this is either an assembler routine or that it is the vector for an interrupt service routine (because the segment is ABSOLUTE).

    The error improper fixup indicates that the target address (for an ajmp) or for a relative offset is too far away.

    The offset of 0023H tells me that the problem happens at the interrupt vector location. The only thing that would cause this problem there is an AJMP to an ISR that is too far away. C51 inserts AJMP instructions in the interrupt vector only in ROM(SMALL). C51 inserts LJMPs in ROM(COMPACT) and ROM(LARGE).

    So, if you wrote in assembly, I'd change the AJMP at addtess 23h to an LJMP.

    It you are using C, this problem should not occur.

    If none of my advice helps, you may actually want to contact technical support for assistance with this problem.

    Jon

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