★ HARDWARE Manual ★ VDP2 User's Manual ★ Chapter 4 Scroll screen
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VDP2 User's Manual / Chapter 4 Scroll Screen
● Normal scroll screen map register
- The normal scroll screen map register specifies the start address of the pattern name table for each plane when the normal scroll screen is displayed in cell format.
This is a write-only 16-bit register located at addresses 180040H to 18004EH. After turning on the power or resetting, the value will be cleared to 0, so be sure to set it. - MPABN0 180040H
- MPCDN0 180042H
- MPABN1 180044H
- MPCDN1 180046H
- MPABN2 180048H
- MPCDN2 18004AH
- MPABN3 18004CH
- MPCDN3 18004EH
- Map bit (for normal scrolling) : Map bit
- (N0MPA5~N0MPA0, N0MPB5~N0MPB0, N0MPC5~N0MPC0, N0MPD5~N0MPD0, N1MPA5~N1MPA0, N1MPB5~N1MPB0, N1MPC5~N1MPC0, N1MPD5~N1MPD0, N2MPA5~N2MPA0, N2MPB5~N2MPB0, N2MPC5~N2MPC0, N2MPD5~N2MPD0, N3MPA5 ~ N3MPA0, N3MPB5 ~ N3MPB0, N3MPC5 ~ N3MPC0, N3MPD5 ~ N3MPD0)
Specify the start address of the pattern name table for each plane when displaying the normal scroll screen in cell format.| N0MPA5 to N0MPA0 | 180040H | Bits 5-0 | For plane A of NBG0 |
| N0MPB5 to N0MPB0 | 180040H | Bits 13-8 | For plane B of NBG0 |
| N0MPC5 to N0MPC0 | 180042H | Bits 5-0 | For plain C of NBG0 |
| N0MPD5 to N0MPD0 | 180042H | Bits 13-8 | For plane D of NBG0 |
| N1MPA5 to N1MPA0 | 180044H | Bits 5-0 | For plane A of NBG1 |
| N1MPB5 to N1MPB0 | 180044H | Bits 13-8 | For plain B of NBG1 |
| N1MPC5 to N1MPC0 | 180046H | Bits 5-0 | For plain C of NBG1 |
| N1MPD5 to N1MPD0 | 180046H | Bits 13-8 | For plane D of NBG1 |
| N2MPA5 to N2MPA0 | 180048H | Bits 5-0 | For plane A of NBG2 |
| N2MPB5 ~ N2MPB0 | 180048H | Bits 13-8 | For plain B of NBG2 |
| N2MPC5 to N2MPC0 | 18004AH | Bits 5-0 | For plain C of NBG2 |
| N2MPD5 ~ N2MPD0 | 18004AH | Bits 13-8 | For plain D of NBG2 |
| N3MPA5 to N3MPA0 | 18004CH | Bits 5-0 | For plane A of NBG3 |
| N3MPB5 ~ N3MPB0 | 18004CH | Bits 13-8 | For plain B of NBG3 |
| N3MPC5 to N3MPC0 | 18004EH | Bits 5-0 | For plain C of NBG3 |
| N3MPD5 ~ N3MPD0 | 18004EH | Bits 13-8 | For plain D of NBG3 |
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★ HARDWARE Manual VDP2 User's Manual ★ Chapter 4 Scroll screen
Copyright SEGA ENTERPRISES, LTD., 1997