Casio QT-2000 Service Manual page 76

6. SED1351F0A
I/O CONTROL
ADDRESS
BUFFER
DATA
BUFFER
REFRESH
TIMING LOGIC
ADDRESS
COUNTER
OSC MPX
— 74 —
CONTROL REGISTER
16BIT
VRAM
CONTROL
DISPLAY
TIMING
CONTROL
DISPLAY
DATA
CONTROL
MPX