This was Ithaca Audio's
(later known a Intersystem's) Analog to Digital and Digital To Analog Board.
The board has 8 A/D channels and 8 D/A channels all
independent with a range of +5 to -5 Volts. A/D sampling up to 20 KHz is
possible. The D/A conversion time is typically 2 microseconds.
There is a RTC derived from the bus 2MHz clock.
Ports can be either memory or I/O mapped and can be interrupt triggered.
The board had a wait state generator and can utilize the S-100 bus Phantom line
(for Memory mapped ports).
The manual for this board can be obtained
Other InterSystems S-100 Boards
64K Dynamic RAM
256K Dynamic RAM
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