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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

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...

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Amiga Floppy

not the PC again?

I was doing some more tests trying to get the PC to fail. It seems that the PC really likes EVEN delays between data, and it’s wierd because faster data that comes in evenly is better than slower data that comes...

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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...

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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.

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Amiga Floppy

Timing image

I just wanted to throw this up here to show an example of how the timing is working on my project. Its working well. Top line is the input signal from the drive. Bottom line is the firing of interrupts, either from the...

60 views
Amiga Floppy

progress on windows side

I put some time into the windows program that makes this whole thing tick tonight.  When I first started this project, I started with Marco’s afr.c, and pared it down to the bare necessities.  Then, I modified...

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Amiga Floppy

Latest attempt

Tim mentioned something in the last post regarding SYNC which really had me thinking about how to SYNC the data coming in the drive with the data going to the UART of the USB2SER converter. Then I was thinking, now that...

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Amiga Floppy

PC xfer working now, timing in order

Welp I pretty much solved the big problems I encountered over the past couple weeks. Ground issues — turned out I was attaching ground of one interface to Vdd on another interface. That was solved by actually...

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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...

59 views
Amiga Floppy

PC might be the problem!

I think I’ve found at least one problem here. My PC is at least one problem. Even though I’ve done extensive tests with the PC in the past, including measuring a 9us total cycle time, it appears the PC must...

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