exxos's Atari, Amiga & retro forum

Hi all,

So I just received my refurbed ALPS Floppy Drive to install into my Falcon (https://www.exxosforum.co.uk/atari/store2/#0116), however, I just tried swapping it over with my original Floppy Drive and it wasn't recognised.

Do I need to use the original Floppy cable that was installed in my Falcon, or do I need to swap it for one of the floppy cables that has the partial twist in it?

Unfortunately my original cable isn't socketed at the motherboard, so if I need to swap it for the twisty kind of cable I'm sure there will be lots of fun and swearing to be had. If anyone has any tips for swapping the cable over (if thats what I need to do) then please do share them.

Thanks,

Andy.

So I worked out the issue, my floppy cable had a notch on it that prevented it from being insert in the correct orientation, once I'd attacked it with a craft knife and removed the notch the drive was recognised :-)

However......some floppy's look like they're fine,
but on closer inspection are probably corrupt.
These disks are 25yrs old, so it should be no surprise I guess.....although, this one disk did work....I'm sure some of you recognise this screen
DegasElite :-)

Check if it is fixed for DS0

https://www.exxosforum.co.uk/forum/viewt ... f=12&t=415

I would suggest you do at least fixes 3&4 https://www.exxosforum.co.uk/forum/viewt ... =17&t=1585

For fix #3 do these components fit the bill, do any of these look better than the others?
https://au.element14.com/w/c/passive-co ... pins=9pins

With the resisters needed for fix #4, what power rating do the 1k ohm resisters need?
https://au.element14.com/w/c/passive-co ... ance=1kohm

If you can point me to the right components I can order them online.

Thanks.

ap_kelly wrote: 12 Jul 2020 12:40 For fix #3 do these components fit the bill, do any of these look better than the others?
https://au.element14.com/w/c/passive-co ... pins=9pins

Really doesn't matter as long as they 9 pin 10K bussed types.

ap_kelly wrote: 12 Jul 2020 12:40 With the resisters needed for fix #4, what power rating do the 1k ohm resisters need?
https://au.element14.com/w/c/passive-co ... ance=1kohm

125mw ones are probably best to work with being smaller then 250mw ones. But really doesn't matter on power rating, tolerance or anything else really as long as they 1K . Probably cheapest multicomp ones will be fine anyway.

Parts ordered....wish me luck!

@exxos I may be going crazy, or my eyesight might not be what it was. But I can't for the life of me find the 1772 chip on my Falcon. Was a different part used in the Falcon, and does that mean the mandatory fix you mentioned not apply to my machine? Is there another chip number I should be looking for?

Thanks.

ap_kelly wrote: 15 Jul 2020 14:00 @exxos I may be going crazy, or my eyesight might not be what it was. But I can't for the life of me find the 1772 chip on my Falcon. Was a different part used in the Falcon, and does that mean the mandatory fix you mentioned not apply to my machine? Is there another chip number I should be looking for?

Thanks.

You may find that you have an Atari Ajax FDD controller (If I'm wrong I'm sure somebody will correct), I believe the part number is C302096 or C302434, so it won't be marked as a 1772, but it is pin compatible.

Found it :-)

I have the C302096-001A

Thanks for the info.