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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

mid-january status

So here’s where I’m at: I know my memory read and write routines are good.  I calculate a checksum as I’m writing the data, and on the output of that data to the PC, I also calculate the checksum. ...

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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...

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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...

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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

SX software progress

Welp, since I fine tuned the PC to very reasonable numbers, I figure a small overhaul of the SX code is in order too. I had somewhat of an epiphany working the on the SX, which I haven’t *really* looked at in...

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Amiga Floppy

updated code and comments

  Here’s a current version of the code.  I cleaned up my code tonight, added a bunch of comments, and tried to explain and document what I’m doing and the logic behind it. The current code is so much better...

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Amiga Floppy

Current status updated

Current status updated I was originally going to use a Microchip PIC, but they are just too darn slow. I gave up on the idea of using the PIC as a one-chip solution, and tried to use it as just a clock generator feeding...

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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...

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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

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...

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