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Solid State Music - IO4 Board
This is a 2 parallel, 2 serial IO port board.  A very flexible and useful board.

SSM IO4    

The Serial ports were two fully functional with full handshaking using LSI UART chips.   Baud rates were from 55 up to 9600. The two parallel ports were had latch buffers using two 8218's.  Port addressing was quite flexible, serial on any 4 port boundary. parallel on any two port boundary.  The ports could be set to trigger interrupts.
  
The manual for this board can be obtained here
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Other Solid State Music S-100 Boards
8K RAM    VB1B    8080 CPU   Z80 CPU    EPROM   IO4    PB1    VB3    IO5   16K RAM   64K RAM

 

This page was last modified on 08/02/2016