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Gemini User’s Manual
INTERFACE OPTIONS
Gemini provides a parallel interface as standard. Parallel interface
is common to almost all popular microcomputers currently on the
market. But some computers use serial processing transmission
and require serial interface capability. As shown in Figure 4-1,
Gemini is designed to accommodate either type of interface.
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Parallel interface ,
(standard)
b
Control drive
circuit
CPU
ROM
RAM
I/O
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Figure 4-1.
The Gemini printers are provided with the parallel interface
as standard equipment, with a serial interface available as an option.
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The parallel interface is incorporated in the same printed
circuitboard(PCB) as the contdcircuitboard. The optional serial
interface board is constructed to be attached directly to the PCB
and to fully reside within the body of the printer. If your system
requires a serial interface, contact your Gemini dealer for purchase
of the Gemini SBI-4010X serial interface board.
In the following section, we will discuss the parallel interface.
But first, let’s consider the DIP switches - where are they, what
are they, and what do they do? So turn your printer around, and
let’s look at the back.
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