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• Attribute Generator Circuit
The character data output from the CH shift register (U25; lS166) is ANDed with the U49-3 pin
output at U41. This U49-3 pin signal is an ORed signal of U37-8 output which is an enable signal
of blinking an U48-11 output which is divided the V-SYNC signal into a half. Therefore, when the
output from U49-3 pin is HIGH, an information output from the QH terminal (pin 13 or U25) is
also output from U49-11 pin as it is.
The signal from U49-11 pin is an ORed signal of U41-8 pin output and U56-10 pin output. This
signal is selected by the U5? and then sent to the U49-9 pin. Further, the signal from U57-4 pin
is input to both U33-14 pin and U34-14 pin. These two ICs add an information concerning an
attribute to the character data and then output to U32 which synchronizes these outputs with
the DOT-ClK signal.
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