UPD17062 datasheet(260/298 Pages) RENESAS

260 / 298 page

258

µPD17062

20.5.2

Control Data

The control data specifies the display position, size, and color of a character pattern. It is stored at

×××FH

in the CROM area. One control data item consists of 16 bits. The highest bit is always 0. Fig. 20-9 shows

the configuration of the control data.

Fig. 20-9

Control Data Configuration

The control data is provided between two character pattern data items. It has nothing to do with the

character pattern data items at addresses before and after the control code. Any control data can be specified

using data in VRAM.

(1) Horizontal size data (b14 and b13 of control data)

The horizontal size data determines the horizontal size of each image of a character. Each character has

four image sizes (up to three sizes per row). Table 20-7 lists details of the horizontal size data.

Table 20-7

Horizontal Size Setting

b15

b14

b13

b12

b11

b10

(Fixed)

Horizontal

size

Vertical

size

Horizontal

position

Vertical

position

Color

Horizontal size data

Size

Horizontal width

Maximum number of display

b14

b13

of a character

characters per row

Standard

2.5

µs

Double

5.0

µs

Triple

7.5

µs

Quadruple

10.0

µs4

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