Asm uninitialized data

[jfl]

I am trying to use uninitialized variables in my os but can't figure out how. A sample of the code I have so far is:

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22: mov test,0xDE
23: section .bss
24: test: resb 1

When I build it using

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nasm -f elf -o load.o load.s

, it outputs:

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src/load.s:22: error: invalid combination of opcode and operands

I've tried adding square brackets but it doesn't work.

[bluemoon]

I've tried adding square brackets but it doesn't work.

I add square brackets and nasm tell exactly the issue:

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error: operation size not specified

The solution to this mystery error message is specify the operation size.

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mov byte [test], 0xDE

ps: test is not a good name for variable label.

[xenos]

ps: test is not a good name for variable label.

...because "test" is an x86 instruction.