Sharp MZ-800 Technical Reference And User's Guide

11-11 Interfacing with the MZ-800
Fig.l shows the block diagram for connection with the
printer. Fig.2 shows its circuit description. Fig.3 shows
the timing chart.
Table of character set
11-12 Block diagram
Da---j
ARDP---1
ARDA ---;
Buffer
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MPU
The CPU sends data to the printer after confirming that
ARDA
is in low state. Five micro seconds later, the strobe
signal ARDP goes high. The
CPU confirms that ARDA is
in high state, ARDP is returned to a low state 14.5 micro
seconds later.
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Transistor
array
Solenoid driver
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Functional Switches
PAPER FEED
PEN
CHANGE
ARDA ---...,
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Calor POSition
detector
X. axis
steppino motor
Y. axis
stepping motor
PEN UP/Down
Solenoid
DATA ________ ~><~-------~------
ARDP---------~~
14.5
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Sharp MZ-800 Specifications

General

Brand	Sharp
Model	MZ-800
Category	Desktop
Language	English