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For Colortran Inc., Bohacz (C Prompt president and founder) was the architect and
developer of an industry premier Theatrical Lighting work station. The architectural
design work done by C Prompt included both software and hardware. This was a multiprocessor OS/2 PM based product. This work
station involved: GUI based CAE lighting design, real-time mission critical show control,
and Ethernet connected multiple processing stations.

The system's real-time control is fully scaleable with a base-level configuration
capable of controlling 1536 studio lights. The actual control of each light involves
replaying a programmable 1000 step animation at up to 20 frames per second. Each light is
able to have it's own unique animation, with all 1536 animations running simultaneously.
The console needed to be fully mission critical. If the product failed a television
broadcast could go off the air or a Broadway play might go dark. To accomplish this goal
each console contains fully redundant hardware with the secondary computer shadowing the
operation of the primary computer. If problems occurs the secondary computer is switched
on-line and takes over the show.
The CAE lighting design and real-time operation data is displayed across two monitors
(with a third monitor optional). Shows can be designed either through full simulation or
by actual light control (scene setup) followed by recording the scene into a programmed
step in the 1000 scene sequence.
Over 300,000 lines of OS/2 PM "C" went into this system. Bohacz was the
sole software architect & personally authored over 200,000 lines. The hardware
included multiple Intel 486 processors and multiple i960 RISC processors. The RISC slave
processors provided the real-time numerical processing power needed to calculate high
speed lighting effects, while the 486 processors running OS/2 provided the master control,
CAE, and monitoring functions.
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