#299 GPASM unexpected error

[Philippe Paternotte]

Hi,
I have an error assembling a file for enhanced PIC, see capture in attached file.
command line was gpasm -i -c -o test.o test.asm
The line 467 is:
addfsr 0, 1 ; Skip source string char count

I have made a check with only that line and the error reproduces. So I give you the reduced file in attachment too.

I remember to have trouble with such instruction in a previous version, but I think it was fixed?
(gpasm #1285, Windows version)
Regards,
Philippe.

[Philippe Paternotte]

Forgot the output capture...

[Molnár Károly]

If I will be have enough time, I will look at it what the cause of this error.

Károly

[Philippe Paternotte]

Hi again,
Several things:
1) The ADDFSR FSR0, k syntax works well in GPASM.
2) The ADDFSR 0, k syntax is accepted by MPASM, ADDFSR FSR0, k as well.
3) FSR0 / FSR1 are defined to their register address in the include file (0x4 and 0x6).
4) It's in the scope of the stranges mpasm syntax because the MOVIW/MOVWI accepts FSR0 or INDF0 in both MPASM and GPASM, while the code corresponds to MOVIW/MOVWI 0x0, k, while for INCFSR it corresponds to INCFSR 0x4, k.
5) Also the error message seems to have a bad formating?
6) Also this strange "system error" further? Side effect?

[Molnár Károly]

In this case, illogical the behavior of gpasm, that's true. The interesting part is - or rather regrettable - so far, no one has indicated this.

[Molnár Károly]

Fixed this bug in the svn [r1293] version:

gputils-src-20161216-1293.tar.bz2
gputils-src-20161216-1293.tar.gz (sourceforge.net)
gputils-20161216-1293-setup.exe (sourceforge.net)

A simple example:

    list    p=pic16f1823
    include p16f1823.inc

main    code

    addfsr  0, 1
    addfsr  1, 1
    addfsr  4, 1
    addfsr  6, 1
    addfsr  FSR0, 1
    addfsr  FSR1, 1

    movwi   1[0]
    movwi   1[1]
    movwi   1[4]
    movwi   1[6]
    movwi   1[FSR0]
    movwi   1[FSR1]

    moviw   1[0]
    moviw   1[1]
    moviw   1[4]
    moviw   1[6]
    moviw   1[FSR0]
    moviw   1[FSR1]
    return

    end

Károly

[Philippe Paternotte]

OK, thanks for this quick fix.
Happy Xmax.

[Molnár Károly]

Merry Christmas.

Károly