HP 71B CAT$ Problem

[Paul Berger (Canada)]

(02-12-2017 09:02 AM)J-F Garnier Wrote:  It may be related to the end-of-directory bug (on both 1A and 1B ROM versions), an old bug that I recently described in detail on my HP71 bug page.
But I can't reproduce your problem (on my emu71 emulator, not with a real HP9114). Even with a directory full (and so a corrupted first file), CAT$ after the last file correctly returns a null string.

If you could make a disk image, I would like to investigate. I'm still interested in all HP71 new-old-bugs !

J-F

Well the diskette has been hit by the end of directory bug, and it would seem that the end of directory marker is what it is failing on, but I guess there is a chance I may have tried to read past it too. I ran my program on a diskette that does not have a full directory and the same thing happened when it got to the end. I will play with it a little more to see if I can get a better idea of the cause.

Paul.