Unrecognised OSWORD A=08 service call bug

[hoglet67]

When MMFS is not the current file system, this service call is claimed rather than passed on.

See:
http://www.stardot.org.uk/forums/viewtopic.php?p=193394#p193394

Dave

[SteveFosdick]

There appear to be two separate underlying bugs here:

1. In the OSWORD code the check for whether MMFS is the current filing system and setting the return status of the service call as A=00 are done in the wrong order.
2. In FSisMMFS, testing the file minimum file handle does not test is MMFS is the current FS as MMFS uses the same file handles as DFS so this returns true even if DFS is the current FS.

I have a version that fixed both of these - see: SteveFosdick@5bba36f though I can't see immediately how to turn that into a pull request.

[hoglet67]

Thanks Steve,

I can pull the commit in directly and merge it.

Dave

[SteveFosdick]

And a version of the test program:

   10osword=&FFF1
   20PROCrunosw("DISC")
   30PROCrunosw("CARD")
   40PROCrunosw("DISC")
   50PROCrunosw("CARD")
   60END
   70DEFPROCrunosw(F$)
   80OSCLI F$
   90A%=&7E
  100X%=&70
  110Y%=0
  120CALLosword
  130N%=(!&71 AND &FFFF)DIV10
  140PRINTF$;": Number of tracks ";N%
  150ENDPROC

[hoglet67]

Fix included in MMFS 1.54.

See further discussion here:
https://stardot.org.uk/forums/viewtopic.php?p=390229#p390229