I have a file with a name like xxxx.asm

in it I have:


pic-as throws a syntax error on this line. The code compiled fine with:
mpasmx -rdec pic-code.s
I thought *.asm files were the file type that pic-as took to mean assembly with no C contructs in them and would thus assemble them as the older assembler did.
Is there something obvious I missed?

  • \$\begingroup\$ for pic-as you nedd *.s files and not *.asm files. \$\endgroup\$
    – Mike
    Commented Apr 27, 2021 at 4:50
  • \$\begingroup\$ Also consider what file encoding is being used on the source file. Could be that the assembler is expecting a different type. \$\endgroup\$
    – rdtsc
    Commented Apr 27, 2021 at 12:16

2 Answers 2


MPASM and pic-as are using different file types:
MPASM: *.asm files
pic-as: *.s files

Please remember, there are a lot more differences between these assembler types. See this document for the details.


It seems to be a bug in pic-as
made the syntax error happen. Replacing the white spaces with a press of the tab key made that line compile. It seems that not all white spaces are taken as the same thing
This has become moot for me because I rolled back to v5.35 and mpasmx. I think it is better to finish my project with that version. I saw reports on line that suggested that pic-as is quite buggy. Perhaps my issue was one of the bugs.

  • 1
    \$\begingroup\$ What exactly is '(space)(space)---(space)'? Please show your actual source code text, using the 'code sample' tag. \$\endgroup\$ Commented Apr 27, 2021 at 7:03
  • \$\begingroup\$ At about line 3 of my initial question is a copy-and-paste of the line of text from the source file. My '(space)(space)---(space)' represents some number of presses of the space bar that I don't know. I didn't keep the original so how many it was would be an estimate. The word "MACRO" was aligned at column 16 so 7 would be the number of spaces. \$\endgroup\$
    – Ken Smith
    Commented Apr 28, 2021 at 14:09
  • \$\begingroup\$ Maybe edit your answer with the <code sample tag> \$\endgroup\$
    – Mike
    Commented Apr 29, 2021 at 4:53

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