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MTV030 Revision 1.0 10/15/1999

MTV030

MYSON

TECHNOLOGY

3.7 Character ROM

MTV030 character ROM contains 512 built-in characters and symbols including 496 standard fonts and 16

multi-color fonts. The 496 standard fonts are located from address 0 to 495. And the 16 multi-color fonts are

located from address 496 to 511. Each character and symbol consists of 12x18 dots matrix. The detail pattern

structures for each character and symbols are shown in “CHARACTERS AND SYMBOLS PATTERN” on

page 21.

3.8 Multi-Color Font

The color fonts comprises three different R, G, B fonts. When the code of color font is accessed, the separate

R/G/B dot pattern is output to corresponding R/G/B output. See Figure 6 for the sample displayed color font.

Note: No black color can defined in color font, black window underline the color font can make the dots

become black in color. The detail pattern structures for each character and symbols are shown in “CHARAC-

TERS AND SYMBOLS PATTERN” on page 21.

TABLE 4. The Multi-Color Font Color Selection

3.9 Luminance & border generator

There are 3 shift registers included in the design which can shift out of luminance and border dots to color

encoder. The bordering and shadowing feature is configured in this block. For bordering effect, the character

will be enveloped with blackedge on four sides. For shadowing effect, the character is enveloped with

blackedge for right and bottom sides only.

R

G

B

Background Color

0

0

0

Blue

0

0

1

Green

0

1

0

Cyan

0

1

1

Red

1

0

0

Magent

1

0

1

Yellow

1

1

0

White

1

1

1

R

G

B

Magent

Green

Cyan

Blue

FIGURE 6. Example of Multi-Color Font