AM 320-01-808
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Fig. 2: Block diagram of a slave processor
2. The Slave Processor (5L5)
The slaves can be thought of as digital
sound generators. Each SL5 board can
produce 4 sounds, each consisting of two
sound components; the organ can be
equipped with a total of 8 slave boards.
The slave receives its information from
the master via the 2-port RAM, located on
the slave. According to the
information it receives from the master, the
slave then produces the sounds. The output of
the sounds is done automatically by the timer,
the DMA controller and the slave CPU after
the CPU has made the correct timer and
DMA settings. The CPU is responsible only
for the amplitude envelope for the 8
components. Each of the B Digital to Analog
Converters (DAC) receives an envelope
voltage. The Audio signal, after being
produced by the DAC, can then be routed to
one of the 5 output channels by the
"crosspoint matrix."
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