FD-1 Floppy Disk Controller


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No completed boards exist in Peripheral Technology's inventory so these scans of the bare board are provided.

This information is for historical purposes.  This board was designed in 1978 by Frederic Brown and Wendell Brown while they were students at Southern Institute of Technology.  For the record Frederic and Wendell are not related.  The FD-1 was  a cheaper solution to the SWTPC DC-1 controller.  The floppy diskette drives typically used with this controller was a Shugart SA-400 drive.  The SA-400 was single sided and single density and only had 35 tracks.  The storage capacity was about 90K. While this does not seem like much capacity, a typical program was 4K or less. This board is a SS-30 peripheral card used in SS-50 bus systems.  The SS-50 bus was first developed by SWTPC and was later copied by other companies. The processor in the first SWTPC computer was a MC6800 processor running at slightly less than 1MHZ speed.  Peripheral Technology later produced an updated floppy controller card - the FD-2.  These were the only products produced by Peripheral Technology for the SS-50 bus.

The board is marked PTA which stood for Peripheral Technology Associates,  Wendell left the partnership shortly after the board started shipping and the company then became Peripheral Technology or "PT".

Sadly no product brochures survive.

Product Summary

Downloads

Make these changes to your board Mod    Mod list for those building a board.

Click Here to download FD-1 User manual

 

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If you are interested in these products email sales@peripheraltech.com with your address and we will respond with purchasing information

The FD-1 is sold out.  Because of continued interest in this product, I may make a small run of these boards.  The reproduction boards will have the layout error fixed,  The board will be a close but not exact copy.  Modern layout software won't match the wavy lines in the hand taped original board.  The board will also be solder masked and silk screened since there is no additional cost by the board house.  If you are interested, please email us to get on a list. There is no obligation should you change your mind.  The prices will not change for the new board.

FD-1 Bard FD-1 bare board $15
FD-1-Bare + 1771 FD-1 bare board with 1771 controller chip $25
FD-1-ASM Assembled FD-1 Board - data separator aligned, not tested due to lack of SS50 6800 system $75

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