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VII. 3 .. Parallel Interface
The IMSAI Key-1 Keyboard provides an example of a
parallel interface.
put port with its associated handshake signals.
The example shown in the illustration at the end of
this section uses the processor interrupt request
line to signal that an input character is ready,
and the interrupt acknowledge to signal acceptance
of the character.
Interface Examples
Figure 2 below shows the location of the jumper areas
described in the User Guide.
the use of these jumpers for interfacing common peri
pherals are shown on the following pages, followed
by a worksheet that you can use to lay-out your own
jumper connections.
The keyboard uses one PIO in
Specific examples of
i/i-LU
User Guide
2
37
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