S100 Computers

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MITS   88-1MCS   1K Static RAM
This was the first RAM board designed for the S-100 Bus.


The board was a very basic and simple design with plenty of left over real estate. A schematic for this board can be obtained here.  The only item of note is that a signal was put out on the S-100 bus line 69 indicating the status of the "write protect line " (pin 70).  These signals were dropped by later board manufactures and never incorporated in the IEEE-696 standard.  The boards were quickly replaced in S-100 systems for more dense RAM boards and are now essentially collector items.


Other MITS S-100 Boards
1K RAM   4K RAM   4K Dynamic RAM  16K RAM   16K Dynamic RAM   4PIO  8080 CPU   VI/RTC   PCI   ADC

2K PROM    8K PROM    88-2 SIO    SIO-B   MITS FDC Boards   TurnKey Board


This page was last modified on 10/25/2013