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

Logicport screenshots and project file

I thought this might be neat to put up. Sorry about the high-res image but you lose too much when it compresses it. Click here for the screenshot. Also, I uploaded the .LPF project file which can be viewed for free with...

63 views
Amiga Floppy

Good news. Floppy now under SX control

OK, so I finally bit the bullet and have the floppy drive under direct SX control. I have my amiga power supply, which is a modified PC supply with harddrive leads powering the drive directly with +12v and +5v.  I also...

62 views
Amiga Floppy

writing merged USB comm code

Now that I have USB receive working in the main PC code, its time to merge the USB transmit(and receive for commands) into the main SX code. I have two pseudo-code versions written. 1> First version uses the ISR to...

62 views
Amiga Floppy

followup on speed of inpout32

Welp, did some testing last night, and no, it doesn’t look like inpout32 is really going to be any faster. Damn shame because it was relatively easy to setup and use. Quick reply from the authors(thank you) who...

62 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...

61 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...

61 views
Amiga Floppy

current read problems

It seems as though when I have a read problem, its normally minor, and is a single bit error. I notice that the errors have a tendency for 0s to be incorrectly interpreted as 1s. So I get AB instead of 2B, AB instead of...

61 views
Amiga Floppy

going around the problem

Welp, I’ve ordered a new, but cheap ($5.99!) regular PC floppy drive from newegg.com.  I like this end result much better anyways.  PC drives are much more available, popular, cheap, and so on. was worried about...

60 views
Amiga Floppy

Changes to the PC side

With more and more things pointing to the PC, I’ve decided to really reduce the amount of work the PC has to do in its receive loop. I looked at Marco’s because his was designed to run (albeit in dos/dos...

60 views
Amiga Floppy

Timeline

I’ve put together a time line of events starting from November 2004, the initial idea.

CLICK THE ABOVE IMAGE FOR A FULL SIZE VERSION.

60 views