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DISPLAY CONTROL INSTRUCTION

The display control instructions control the internal state of the KS0108B . Instruction is

received from MPU to KS0108B for the display control. The following table shows

various instructions.

Instruction

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Function

Display ON/OFF

L

L

L

L

H

H

H

H

H

L/H

Controls the display on

or off. Internal status

and

display RAM data is not

affected.

L : OFF, H : ON

Set Address

L

L

L

H

Y address (0-63)

Sets the Y address in the

Y address counter.

Set Page

(X address)

L

L

H

L

H

H

H

Page

(0-7)

Sets the X address at the

X address counter.

Display Start

Line

L

L

H

H

Display start line

(0-63)

Indicates the display data

RAM displayed at the

top

of the screen

Status Read

L

H

B

U

S

Y

L

ON

/

OFF

R

E

S

E

T

L

L

L

L

Read status.

BUSY

L: Ready

H: In operation

ON/OFF L: Display ON

H: Display OFF

RESET L: Normal

H: Reset

Write Display

Data

H

L

Write Data

Writes data (DB0:7)into

display data RAM. After

writing instruction, Y

address is increased by

1 automatically.

Read Display

Data

H

H

Read Data

Read data (DB0:7) from

display data RAM to the

data bus.