Return to previous page ｜ Return to menu ｜ Go to next page

4.10 Display area

The display area of ​​the scroll screen varies depending on the register settings. When the display coordinate value exceeds the display area on the normal scroll screen, the image in the display area is displayed repeatedly. If the display coordinate value exceeds the display area on the rotary scroll screen, it is processed according to the register settings.

Display area

The display area changes depending on the plain size when the display format of the scroll screen is the cell format, and changes depending on the bitmap size when it is the bitmap format. NBG0 and NBG1 also change depending on the reduced display setting up to 1/4. The display areas are shown in Tables 4.12 and 4.13.

Table 4.12 Normal scroll screen display area
Display format Scale down Plane size Bitmap size Display area
Cell format No reduction
or
1/2 possible 		1 horizontal page x
1 vertical page 		- 0≤X <1024,0≤Y <1024
2 horizontal pages x
1 vertical page 		- 0≤X <2048,0≤Y <1024
2 horizontal pages x
2 vertical pages 		- 0≤X <2048,0≤Y <2048
1/4 possible 1 horizontal page x
1 vertical page 		- 0≤ X <1024,0 ≦ Y <2048
2 horizontal pages x
1 vertical page 		- 0≤X <2048,0≤Y <2048
Bitmap
Format 		- - 512 in width Dot x
256 dots vertically 		0≤X <512,0≤Y <256
- 512 horizontal dots x
512 vertical dots 		0 ≦ X <512,0 ≦ Y <512
- 1024 horizontal dots x
256 vertical dots 		0≤X <1024,0≤Y <256
- 1024 horizontal dots x
512 vertical dots 		0≤X <1024,0≤Y <512

Table 4.13 Display area of ​​rotating scroll screen
Display format Plain size Bitmap size Display area
Cell format 1 horizontal page x
1 vertical page 		- 0 ≦ X <2048 , 0 ≦ Y <2048
2 horizontal pages x
1 vertical page 		- 0≤X <4096,0≤Y <2048
2 horizontal pages x
2 vertical pages 		- 0≤X <4096,0≤Y <4096
Bitmap format - 512 horizontal dots x
256 vertical dots 		0 ≦ X < 512,0 ≦ Y <256
- 512 horizontal dots x
512 vertical dots 		0≤X <512,0≤Y <512

Return to previous page ｜ Return to menu ｜ Go to next page