STV9432

9/18

8.1.2 - Descriptors

Spacing

Character

8.1.3 - Code Format

There are basically 3 kinds of code:

- the control codes from 0 to 15 (00H to 0FH),

- the ROM monochrome character codes from 16 to 255 (10H to FFH),

- the two bytes multicolor character codes from 08F0 to 08FF (Hex).

Table 1

Character and Command Codes

Single byte codes 00 to 0f are command codes. Single byte codes 10 to ff are monochrome character codes.

Double byte codes 08F0 to 08FF are multicolor character codes.

MSB

0

L/

--

----

C

LSB

SL7

SL6

SL5

SL4

SL3

SL2

SL1

SL0

L/

: LINE or CHARACTER spacing:

= 0, spacing descriptor defined as character height (SL[7:0] = 1 to 255 character).

= 1, spacing descriptor defined as scan line height (SL[7:0] = 1 to 255 scan lines).

SL[7:0]

: Number of selected height (character or scan lines according L/

).

MSB

1

DE

CLU3

CLU2

CLU1

CLU0

C9

C8

C

C

LSB

C7

C6

C5

C4

C3

C2

C1

C0

DE

: Display enable:

= 0, R = G = B = 0 and FBLK = FBK bit of display control register on the whole strip,

= 1, display of the characters.

CLU[3:0]

: Active color selection at the begining of the strip.

C[9:1]

: Address of the first character code of the strip.

C0

: Address 0 must be 0.

0

123456789

A

B

C

D

E

F

0

col 0

1

col 1

2

col 2

3

col 3

4

col 4

5

col 5

6

col 6

7

col 7

240 Monochrome Characters

8

multicol

9nop

A

vflip

B

hflip

C

dflip

D

call

E

rtn

F

eof