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Amiga Floppy

inital results on error correction

While I have yet to actually implement the full-scale error correction as I want to, I did some manual tests today. I basically took a track that I was erroring out on, and swapped in 1-bit away values for the bad bytes.  In some cases, it appeared...

keith
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Latest articles

Amiga FloppyInactive

SX EOL

I hate when this happens. 🙂 The Parallax SX microcontroller line has reached production EOL. The owner of the SX design (www.ubicom.com) has given Parallax final notice that we are to place a lifetime buy of wafers. We...

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Amiga Floppy

more hardware

When in doubt, just throw some more money at the problem! 🙂 Actually, I’m kidding. But I do have the Parallax USB2SER on its way — maybe the USB will be much faster, buffered, and more reliable. Those...

38 views
Amiga Floppy

added commands

So I’ve added commands to support forward/backward stepping and upper and lower sides. R for Read D for Dump F/B for stepping either Forward or Backward U/L for selecting upper or lower side. I’ve tested...

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Amiga Floppy

mail issues from the blog

I dunno how or why, but there were problems with the outbound mailing from my blog. In any even, I’ve added a new plugin, and everything is working much better. If there are any complaints, problems, etc please...

37 views
Amiga Floppy

out of the country!

I just left Amsterdam, and now am spending some time in Brussels.
I have some preliminary photos up in the gallery.

Floppy project is still on my mind!
 

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Amiga Floppy

timing movie

I have uploaded a movie showing 30 seconds of input signal vs detected result. I checked this frame by frame and I didn’t find a single error. I still can’t figure out why I have output errors. Maybe you can...

36 views
Amiga Floppy

merging USB receive

Well, I’ve managed to merge the USB receive portion into the main program that reads and processes tracks.  This means I no longer need an external program to receive the data, to write it to a file, to read the...

36 views
Amiga Floppy

funky idle routine

I’m making some progress. On a whim, I told my software to never go idle, to simply stream data constantly. I’ve never liked how I handle the idle state, and I currently lose whatever data thats in the shift...

36 views
Amiga Floppy

current code plus recent progress

Although its ugly, the new code is here. This shows the entire ISR in assembly now. I do like it much better. Tonight I happened to transfer a track that has a good sector. The sector header passed checksum, as did the...

35 views
Amiga Floppy

new book

I picked up a copy of Reversing: Secrets of Reverse Engineering this past weekend. I have about 5 or 6 chapters read. All very good. It was published April 2005 or thereabouts, and so its much more updated than the book...

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