Re: Help with Dual CF S-100 IDE VERSION 02

[David Fry <dgf...@googlemail.com>]

Hi Neil,

 

as you have noted, most CF adapters out there have the IDE connector mounted in a way that is 'inverted' from our point of view,

The CF adapter IDE connector should have the locating bump on the component side, Most Don't.

John uses a adapter made by SyBa, these are available on Ebay if you search for 'syba cf adapter'

alternatively you can run a IDE cable out to a Startech 3.5" Drive Bay CF adapter as I have done, these work fine also.

 

http://www.ebay.co.uk/itm/StarTech-com-CF-Card-Reader-to-IDE-Adapter-35BAYCF2IDE-/111342844456?pt=UK_Computing_ComputerComponents_InterfaceCards&hash=item19ec8cfa28#ht_1133wt_1171

 

Regards

 

David Fry

On Tuesday, May 6, 2014 3:15:23 AM UTC+1, nbreeden wrote:

I've ran into an odd issue with IDE card.

The card has been fully built out.

Without the CF adapters installed the boards as expected. I'm able to write to all 6 TIL311's correctly; probing around the board everything looks as I would expect; the drive flip flop works etc.

When I plug in a CF adapter the ID0..ID4 signals are pulled to VSS (8255 Port A PA0..PA3 pins, CF adapters pins 11,13,15,17 ). It's definitely the CF adapter pulling the 4 pins low. I have 3 CF adapters, all three do this; both CF positions on the PCB result in the issue.

I've swapped put the 8255 and the 74LS244s (U12 and 14). At this point I'm lost.

-Neil