I’m running into an issue with HD, high density, floppies. The output on the scope looks just fine, but I get a consistent bad checksum on all the tracks. I’ve tried with and without covering the HD hole...
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great performance increases
Today I’ve worked on optimizing the performance of the AFP reader and have made great strides. My original track times were nearly 475ms. This was 300ms reading the actual disk, 125ms transferring, and process...
changed from rxtx to jd2xx
Okey dokey. I’ve changed from rxtx to jd2xx. rxtx didn’t support DTR/DSR flow control, which really is an absolute must for my application. There would have to be hardware changes that I’d be...
basic schematic
I put up a rough schematic of my design. It’s not perfect, and will be updated in the near future, but if you are interested.
Click the image below for a full size image.
data rate vs throughput
Although I’m transmitting from the Parallax SX microcontroller to the PC via USB at a data rate of 2mbps, the actual throughput is much less. First, there is some overhead, namely start and stop bits, which is...
java software updated
Tonight I’ve finally got around to adding a config file option so that you don’t have to keep selecting a comport to open. It also remembers your “number of retries” before skip options. Simply...
