7220 Datasheet, PDF (108/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

FUNCTIONAL DESCRIPTION
2.11 CRT display function
Figure 2.11.11 shows the structure of CRT display RAM.
Block 1
[Character specification]
7
1st character : 0600 16
to
24th character : 061716
[Color specification]
1st character : 0680 16
to
24th character : 069716
10
Block 2
[Character specification]
7
1st character : 0620 16
to
24th character : 063716
[Color specification]
1st character : 06A016
to
24th character : 06B7 16
10
Fig. 2.11.11 Structure of CRT display RAM
0
Character code
Specify 256 characters (“00 16” to “FF16”)
Color register specification
0 0 : Specifying color register 0
0 1 : Specifying color register 1
1 0 : Specifying color register 2
1 1 : Specifying color register 3
0
Character code
Specify 256 characters (“00 16” to “FF16”)
Color register specification
0 0 : Specifying color register 0
0 1 : Specifying color register 1
1 0 : Specifying color register 2
1 1 : Specifying color register 3
7220 Group User’s Manual
2-81