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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 Floppy

reading problems

I hate leaving projects for awhile.  Any more than a few days, and you lose the focus, you lose the insight, and remembering exactly where you left off can be a pain in the butt. This time, I’ve come back to a...

53 views
Amiga Floppy

new book

I recently received “On the Edge: the Spectacular Rise and Fall of Commodore” and have read about half of the book so far.  Very interesting read.  It’s fun to read about how the various Commodores...

51 views
Amiga Floppy

more testing

so I put the amiga floppy back on the amiga, and the amiga reads disks no problem.  Glad to see that my drive hadn’t fried through all my messing around. I haven’t seen valid MFM coming from the drive in so...

51 views
Amiga Floppy

a little code review today

While my send UART code has been pretty solid for some time, I’ve always though my receive uart code needed doublechecked and worked on. I spent some time today just going through the code, graphing out some...

50 views
Amiga Floppy

updates

I originally thought that the SX might be sending the data too fast for the PC to handle. As my last post mentioned, one full cycle is 12us, but who knows if this is during a disk-write, going into the cache, etc. I...

49 views
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...

49 views
Amiga Floppy

Found one issue

Well, within an hour or so of getting my new LogicPort logic analyzer hooked up, I’m at least noticing some symptoms that I haven’t seen before. The drive is putting out(or the logic analyzer and my sx is...

48 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...

48 views
Amiga Floppy

java and portability

While I have some experience with Java, I’ve never tried to run my stuff cross-platform. Never a real need. While most of the Java stuff has yet to be written, I took some basic serial code and GUI stuff, and...

48 views
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...

48 views