CRT8021 controller equivalent, crt video attributes controller.
o ON CHIP VIDEO SHIFT REGISTER
Maximum shift register frequency-20MHz
Maximum character clock rate-2.5MHz
o ON CHIP HORIZONTAL AND VERTICAL RETRACE
VIDEO BLANKING
o ON CH.
The SMC CRT 8021 Video Attributes Controller (VAC) is an n-channel COPLAMOS® MOS/LSI device. It contains wide and thin graphics logic, attributes logic, a data latch, field and character attribute latch, a blinking cursor, and a high speed video shi.
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