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Vector Graphic 8 Inch Floppy Disk Controller

When it became generally available Vector started using the Western Digital FDC chip moving away from the less common Micropolis hard sectored disks to the more common soft sectored format(s). They skipped the single density 1771 generation and moved directly to the double density chip.  They chose the true data lines input 1793 chip signals to the more common 1791/1795 chips. With the 1793 of course the board could deal with many disk formats. It  was IBM 3740 compatible in single density mode (FM) and System 34 compatible in double density mode (MFM). 

VG 8INCH fdc

Somewhat unusual the board also contains a serial RS-232 I/0 port in the form of a 8251 USART chip.
I cannot locate a manual for this board. If anybody has a pdf file I will put it up here for people to review.

 

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Dual FD-HD Controller    FlashWriter-II    Bitstreamer-II   48K-RAM    64K-RAM   8080-Board  
8K-RAM   EPROM  FDC   Micropolis-FDC    Z80-Board    SBC
 

 

This page was last modified on 01/08/2011