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Alan Page
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Alan Page commented on a post on Blogger.
Edwin, this is a hobby project. It works, but there are no boards for sale. For commercial uses I suggest something like http://www.cbmstuff.com/proddetail.php?prod=SCP which has great support for multiple formats. The developer is very knowledgeable about the subject.

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Clothes moths in the central vacuum dust bin.

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Percom Doubler II
My first TRS-80 floppy disk drive was an Aerocomp branded 40 track, single sided drive. The available storage was minimal so I ended up buying two additional 80 track drives. The Percom Doubler was available around that time but I could not afford it. Inste...

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Percom Doubler II from a schematic I found. Handmade double-sided PCB. Not yet finished.
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Project Update
Full Single/Double Density Support I am now able to read double-density and mixed density disks including copy-protected disks. The DMA rate has been bumped to 10.417 MHZ. Due to quirks with the Raspberry Pi SPI interface I have to read tracks in three pass...

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DMK File Viewer/Editor
My Raspberry Pi system converts TRS-80 floppy disks to DMK files. One of the challenges of working with DMK files is ensuring that they are workable and comparing them to existing samples from other systems. In order to help with this work I wrote a small D...

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Board Giveaway
I have built another PCB with improved layout and a debug pin for the
logic analyzer so I am giving away my first working prototype PCB to
the person who makes the best submissions. I'm looking for someone who
has both a Raspberry Pi and a TRS-80 and is ...

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Alan Page commented on a post on Blogger.
Bart-Jeroen Hemstra

Are you building the drive emulator or the device to read from a floppy drive? For the device to read from a floppy drive the termination resistors are for different set of signals than are on the floppy (at least standard TRS-80 floppy). These termination resistors are the same as what would be in an actual TRS-80 expansion interface. For the drive emulator only one set of termination resistors is needed per cable.
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