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I just used something like these.

Very nice!

The boards are in and the RAM only board is ready to go!

See the update in post 1 for further details.

Hi Mark,

Great to have you aboard!

Another Canadian too, eh? It seems we're takin' over, eh?

So the signal coming from 610 pin 9 going to floppy 22 is fine? Yes, perfect! it works fine with the 600b but not 600d Well, it was not working 100% with the 600B because of the unique memory error that board is causing. However, I was able to initialize a disk correctly. I will put it back and see...

I tried it out... just hangs... so Im looking at the code now. /Jeff Did you find anything with the code Jeff? I'm still getting mysterious $24 written all over my disks, or so DOSDUMP tells me. I even verified the correct data patterns are being sent the the drive for each sector initialized ($43 ...

This is my electronics bench in it's 'temporary' home in a basement hallway. There are plans to build a room for me to consolidate my electronics and vintage computing, but it's low on the priority list. Not seen here are a large floor standing cabinet and many parts cabinets. Hidden behind the back...

Thanks Dave. I thought it looked right too, but I am not sure. I couldn't even find an example of an FD data write signal on the web. Given that it is correct, I'm still at a loss as to why an INIT would write only $24 all over a disk. I even tried another drive. I'll see if I can dig up another cab...

Hi Folks,

Trying to figure out why I can only write $24 to a disk.

In this scope image, the yellow trace is the inverted data coming from the floppy ACIA as I write $AA to it. The blue trace is pin-9 going to the D-13. Does this look correct?

Thanks for confirming Jeff.

So both schematics are wrong.