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Vector ZCB Single Board computer
language instructions within software prepared for specific applications.
Output is latched on the board, so that after an OUT instruction is
executed, the eight bits of data remain available to the external device
until the computer changes it.
Input is
NOT
latched, so that software must
be written
to
sense in same way that data is available and to input that
data.
There are no interrupt lines connected to the parallel ports.
Rev. I-B
6/11/80
1-7
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