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SuperDOS Bugs?
Posted: Tue Mar 17, 2009 9:16 pm
by zephyr
Code: Select all
SuperDos E4/5/6:
Much improved DragonDOS 1.0 by Mike Kerry of Grosvenor Software
Features:
Paged directory, fixes all known 1.0 bugs
Bugs:
Corrupts mem/files/hangs on FWRITE time out on open files
RENAME allows creation of zero length filenames when used to
copy across disks
WP error can occur 3 or 4 times in succession.
ERROR GOTO not always cancelled on return to BASIC
LOAD'd files remain open
EOF errors occurs whilst FLREADing from large fragmented files
Apart from DragonDOS 1.0, all DOS versions seem to leave LOADed files open unless you use the 'CLOSE' command, or return to the BASIC command prompt. According to the information file at Graham E. Kinns web site, this is listed as a SuperDOS bug. Is this really a bug, or is it correct behaviour?
Re: SuperDOS Bugs?
Posted: Tue Mar 17, 2009 9:24 pm
by admin
I think this refers to using the LOAD command to load a BASIC or M/CODE program into memory, the file is never closed once loaded rather than using file handling to open and close data files.
Re: SuperDOS Bugs?
Posted: Tue Mar 17, 2009 9:36 pm
by zephyr
So, you are of the opinion that this is NOT really a SuperDOS bug , but is in fact correct behavior for LOADed files?
Re: SuperDOS Bugs?
Posted: Tue Mar 17, 2009 9:41 pm
by admin
I would expect that and LOAD'd files would be closed once loading has completed, so it could either be a bug or a design choice. It would be useful if we could re-create the scenario that makes this behavoir a problem - I have seen this when it leaves the drive motor spinning after loading - but its not consistent.
Re: SuperDOS Bugs?
Posted: Tue Mar 17, 2009 9:48 pm
by zephyr
I agree with your way of thinking, but would be interested to see if anyone knows for sure.
Re: SuperDOS Bugs?
Posted: Tue Mar 17, 2009 9:52 pm
by admin
Feel free to contribute stuff to the main site.....if you haven't seen it now, its all wiki based and uses your forum logon details to grant you editor access...
Re: SuperDOS Bugs?
Posted: Tue Mar 17, 2009 10:12 pm
by zephyr
Thank you!
Re: SuperDOS Bugs?
Posted: Wed Mar 18, 2009 8:50 am
by sixxie
Well if that happens, it''s definitely a bug - odd though, don't remember ever being hit by it (grew up with SuperDOS E6 myself). A bug because the programmer wouldn't have access to a file number to CLOSE it manually (or indeed reuse in any way).