So, as I mentioned in another post, I added Jim Thompson’s phase-jerked-loop to the project. Phil had good luck using it with his DiscFerret, but it really didn’t help me. My problem disks are still...
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on recent disk reading results
(this was posted to Classic Computer mailing list, please disregard if you’re on the list. I think this is an important topic) The last two nights I’ve been busy archiving some of my Amiga floppy collection...
New pictures for FPGA AFP
Here are some new photos for the FPGA version of the AFP.
Click for full size.
Enjoy!
found bug last night
With this new FPGA solution, certain tracks would result in what I call a “short read.” A short read is any received track that contains less than 28,125 delta T’s, aka pulse times. Given a certain...
characterizing speed performance of floppy drive controller
So I’ve got things working rather swimmingly right now. Switched drives from Samsung to Sony, and it’s made a huge difference. The Sony just seems to work better. I’m averaging about 355ms per track...
created testbench for state machine / block ram tester
So tonight I fooled around with ISIM, which is Xilinx’s simulator. I was doing behavior simulation and wrote a small testbench for the block ram state machine that I wrote a few days ago. Really neat stuff...
