marsh@linus.UUCP (Ralph Marshall (617 271-7648)) (01/10/89)
Hello out there, I'm making a shot in the dark that this is the right place to put this, so if I'm wrong please accept the apologies. I have been given two 5-1/4" floppy drives that I've been told can be used in an IBM-PC. I have the standard Western Digital controller card that came with the machine, but when I replace the single existing full-height drive with these two new half-height ones, the machine doesn't acknowledge their existence. Also, simply adding one of the SA455s to the cable along with the existing drive results in the machine only seeing the original drive (thus confirming that everything else is still plugged in properly, etc.). There are two sets of pins on top of the SA455s with jumpers on them; one indicates which drive in the sequence it is (i.e. #1, #2, etc.), and the other serves some undetermined purpose. I have tried fiddling with the jumpers in obvious ways but to no avail. SO, the question is: does anybody know what I might do, or even perhaps have experience with these suckers (maybe even an ancient manual... Nah, that would be too much) and know what I need to do to get them working ? Shugart seems to have gone under sometime around 1982 and thus I have no hope of getting any official help. Thanks greatly for any advice. I can be reached at marsh@mitre-bedford.arpa or (617) 271-7648 Ralph Marshall