Very strange problem,

test.asm is:



when I try compiling this with 2 versions of fasm,
the one version succeeds and the other doesnt:

G:\fasm>fasm test.asm
flat assembler version 1.67.7 (15360 kilobytes memory)
1 passes, 7 bytes.

G:\fasm>
G:\fasm>fasmorig test.asm
flat assembler version 1.64
test.asm [4]:
and ebx, 0ffff0000h
error: extra characters on line.

You may be wondering why I want the earlier version of fasm,
its because I have a source file with a large number of includes
which the newer version of fasm will not compile.

What things are incompatible with current version? I'm missing some important change from 1.64 to 1.67.10?

[edit] Corrected 1.76.10 to 1.67.10. Sorry, typed to fast [/edit]

Is it possible it's having a problem with a '\r' character at the end of the line? BTW, if you want to zero out the low half of ebx in 16 bit mode, it's probably faster to just do "xor bx,bx".

what is \r in hexadecimal?

I've resolved the problem:
I had installed both versions to the same directory,

by reinstalling the earlier version of fasm to its own
directory it now runs correctly:

G:\fasm>fasm1\fasm test.asm
flat assembler version 1.64
1 passes, 7 bytes.

G:\fasm>

here I have installed fasm 1.64 afresh to the subdirectory fasm1,

so it must have been a conflict of system files