techtravels.org
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
4 comments

Latest articles

Amiga Floppy

Hardware and code diagram

I’ve thrown up a PDF that shows the basic hardware setup. It also shows the flow of my software, which is very simple. I didn’t put the clock details on there such as how often the clock rolls etc because...

26 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...

25 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...

24 views
Amiga Floppy

vacation reading

While I’m on vacation this week, I’m reading a book about making your own circuit boards using Cadsoft’s Eagle. Eagle is a schematic capture and board layout program that seems pretty popular and...

24 views
Amiga Floppy

example files

I wanted to put up some example files. Note that a preceding “D” for dump and two delimiting 0xFF’s might exist in these files. Also an ending 0xFF 0xFF might exist. So two bad files below have exactly...

23 views
Amiga Floppy

I’ve played around a considerable bit from yesterday. There’s something very strange about the speed the PC can react in certain circumstances, and I can’t quite nail it down. Now I haven’t...

23 views
Amiga Floppy

Site updates

Hi, I made some changes at my provider. I now have access to mysql which really opens up the world of various add on packages. I didn’t initially need or look for this support, but I have it now. I also have a lot...

23 views
Amiga Floppy

Timing problems still?

I think I’m still having timing related issues. I have RTCC overflowing every 1.8us which I *know* is less than the 2us bit cell(or less than half the bit cell, if you take it to be 4us), but this seems to be what...

22 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...

21 views