Screen over pattern name register
- The screen over pattern name register specifies the pattern name data when the rotation scroll screen is set to repeat the character pattern during screen over processing. This is a write-only 16-bit register located at addresses 1800B8H to 1800BAH. The value is cleared to 0 after power-on or reset, so be sure to set it.
- Over pattern name bit : Over pattern name bit (RAOPN15 to RAOPN0, RBOPN15 to RBOPN0)
- Specify the pattern name data when screen over processing that repeats the character pattern is set.
RAOPN15 ~ RAOPN0 1800B8H bits 15-0 For rotation parameter A
RBOPN15 to RBOPN0 1800BAH bits 15 to 0 For rotation parameter B
The bit configuration is the same as when the pattern name table data size is 1 word, and changes depending on the character size, number of character colors, and character number auxiliary mode settings.
∙ This register is used for the scroll screen with the rotation parameter A and the scroll screen with the rotation parameter B, but the character size and character number auxiliary mode that determines the bit configuration is for RBG0 and RBG1. Therefore, be careful when displaying the screen with rotation parameter A and rotation parameter B on RBG0 at the same time.
| RAOPN15 ~ RAOPN0 | 1800B8H | bits 15-0 | For rotation parameter A |
| RBOPN15 to RBOPN0 | 1800BAH | bits 15 to 0 | For rotation parameter B |
The bit configuration is the same as when the pattern name table data size is 1 word, and changes depending on the character size, number of character colors, and character number auxiliary mode settings.
∙ This register is used for the scroll screen with the rotation parameter A and the scroll screen with the rotation parameter B, but the character size and character number auxiliary mode that determines the bit configuration is for RBG0 and RBG1. Therefore, be careful when displaying the screen with rotation parameter A and rotation parameter B on RBG0 at the same time.