[XF551 Mixed-Original Parts Bare PCBs]

That could explain some things.

[XF551 3.5 Mod]

Will a 5.25 drive work with the Hyper XF version B EPROM or do I have to change EPROMs everytime I try out a different configuration?

[XF551 Mixed-Original Parts Bare PCBs]

This is my cardedge adapter.

 

[Atari Enthuiasts]

Thanks for all the responses so far.

[XF551 Mixed-Original Parts Bare PCBs]

I finally finished one of the bare boards. It almost works perfectly. I can only get it to work as drive 1 or drive 2. When I first tested it, it would only work as drive 1 so I must have a bad selector switch or a bad solder joint on the selector switch installation. Going to have to look at it with a magnifying glass.

[Atari Enthuiasts]

I am trying to find Atari enthusiasts in the vicinity of Raleigh NC

[XF551 3.5 Mod]

I was actually asking about pictures of the mod; which you have provided. Thanks. I can't imagine why the sony doesn't work because the slider switch is clearly designed to set the drive number.

[XF551 3.5 Mod]

I assume you are referring to the pins of the 34 pin connector. Do you have pictures?

[XF551 3.5 Mod]

I am using the cable that is original to the PCB with a card edge adapter. The cable works with the 5.25 drives. I am going to cease working on this thing until I find a supposedly compatible drive.

[XF551 3.5 Mod]

The Sony that I have does have a 4 Pin power cable it also has a slider switch to select d0,d1,d2,d3. It still doesn't work.

[XF551 3.5 Mod]

 

Thanks for the info and the link, maybe that is why I am running around in circles.

[XF551 3.5 Mod]

I have a Sony MFD-11W-41, a TEAC FD-235HG, and a NEC FD1231T. I am hoping that the problem is with my cable. I just ordered an adaptor so I can change from the card edge connector to the female 34 pin connector. I know the current card edge connector is working on my 5.25 drive.

[XF551 3.5 Mod]

When everything works correctly, can the 3.5 drive be used as drive 1-4 by changing the 551 drive dip switch?

[XF551 3.5 Mod]

The board works with a 5.25 using the hyper a rom yes.The cable I am using has the connector for either size floppy. I don't know about the drive settings because I really don't know what I am looking for.

[XF551 3.5 Mod]

Should the 3.5 drive work with any DOS or does it have to be a specific DOS like SPARTADOS? I have done everything that the instructions say to do and I am using the HYPEROM B, I have tried 3 different 3.5 drives and none of them will work. The drives come on and spin up, the computer gives a few beeps and then I get an error 144 or error 163.

[Ultimate 1MB upgrade - questions]

I hope the RF shield on the 1200XL is optional. I just finished installing the U1MB on mine and I couldn't possibly fit the shield back on. I also have a UAV-D installed and I would have to make a cutout just for that.

[What's the latest Atari related thing(s) you've bought on ebay?]

SF314 disk drive, I'm hoping to convert it to work with 8-bits using one of the new boards from BitsofthePast.

[XF551 3.5 Mod]

I wonder about the cable because it is a homebrew. I may go pack and recheck the PCB with a 5.25 I am leary of doing much with the PCB because of its inherent fragility.

[XF551 3.5 Mod]

When I used the PCB with a 5.25 I had the stock IC (101696??)and a WD1772.

[XF551 3.5 Mod]

I have two 3.5 drive mechs that I have tried connect to a XF551 PCB. One of the mechs has a slider switch on the side the other has nothing that I can see, when the slider is set to 0 and the PCB switch is set to drive 2, the drive seems to be attempting to respond. If I attempt to read or format the 3.5, it spins up makes some slow beeps and eventually gives an error 144. The disk is not HD. The only thing I can think that might be a problem is the flat cable. The PCB worked with a 5.25 drive and I am using a hyper version B chip. Looking for suggestions. Both mechs exip the same behavior.

[XF551 3.5 Mod]

I had a typo error the labels are ds0 and ds1. DS1 appears to be connected.

[XF551 3.5 Mod]

The drive will not read a disk nor can it be formatted. It appears to be trying to read and format otherwise.

[XF551 3.5 Mod]

I have been trying to figure out how my 3.5 drive is set and I found three solder points in triangle arrangement two are labeled DS1 & DS2; there is a connector between DS1 and unlabeled point. Is the likely jumper that needs to be changed?

[Anyone have ROM dumps of Omniview 80 for 400/800, not XL]

I want to find Omniview XL/XE so I can flash it to a U1MB drive where do I go?

[Atari 8-bit Software Preservation Initiative]

I was obviously on the wrong website, I was here http://a8preservation.com!.What is the link to the archived files?