<76/86> VDP2 User's Manual / 15.3 Bit Configuration Diagram

★ HARDWARE Manual ★ VDP2 User's Manual ★ Chapter 15 How to use VDP2

▲ Back ｜ Back ▼

VDP2 User's Manual / Chapter 15 How to use VDP2

■ 15.3 Bit configuration diagram: Each bit in the register is associated with the other bit. The bit configuration diagram for each scroll screen and each priority function is shown below.

● TV screen mode

TV screen display (DISP, 180000H, bit15)

0: Do not display the picture on the TV screen
1: Display a picture on the TV screen

Border color mode (BDCLMD, 180000H, bit8)

0: Display black
1: Display the back screen

Interlaced mode (LSMD, 180000H, bits7-6)

00: Non-interlaced
10: Single-dense interlacing
11: Double-dense interlace

Vertical resolution (VRESO, 180000H, bit4-5)

00:22 4 lines (NTSC or PAL TV)
01: 240 lines (NTSC or PAL TV)
10: 256 lines (PAL TV)

Horizontal resolution (HRESO, 180000H, bit2-0)

000: 320 pixels (normal graphic A, NTSC or PAL TV)
001: 352 pixels (normal graphic B, NTSC or PAL TV)
010: 640 pixels (high resolution graphic A, NTSC system or PAL system TV)
011: 704 pixels (high resolution graphic B, NTSC system or PAL system TV)
100: 320 pixels (dedicated normal graphic A, 31kHz monitor)
101: 352 pixels (dedicated normal graphic B, high-definition monitor)
110: 640 pixels (dedicated high resolution graphic A, 31kHz monitor)
111: 704 pixels (dedicated high resolution graphic B, high definition monitor)

● External signal enable

External latch enable (EXLTEN, 180002H, bit9)

0: Latch when reading the external enable register
1: Latch by an external signal

External synchronization enabled (EXSYEN, 180002H, bit8)

0: No external sync signal is input
1: Input the external synchronization signal to synchronize the TV screen display with the outside

Image display area select (DASEL, 180002H, bit1)

0: Display only in the setting display area
1: Display the image in the entire standard display area

External screen enable (EXBGEN, 180002H, bit0)

0: No external screen data is entered
1: Enter external screen data

● Screen status

External latch flag (EXLTFG, 180004H, bit9)

0: Not yet latched in register (cleared by read access)
1: The value of the HV counter is latched in the register

External synchronization flag (EXSYFG, 180004H, bit8)

0: Out of sync
1: Internal circuit synchronized

V blank flag (VBLANK, 180004H, bit3)

0: Scanning during vertical display period
1: Scanning during vertical blanking interval (during VBLANK)

H blank flag (HBLANK, 180004H, bit2)

0: Scanning during horizontal display period
1: Scanning during horizontal blanking interval (during HBLANK period)

Scanned field flag (ODD, 180004H, bit1)

0: Scan during even field period
1: Scanning during odd field period

TV system flag (PAL, 180004H, bit)

0: NTSC method
1: PAL method

H counter value (HCT, 180008H, bit9 to 0)

V counter value (VCT, 180008H, bit9 to 0)

● VRAM

VRAM size (VRAMSZ, 180006H, bit15)

0: 4M bits
1: 8 Mbit

VRAM-A mode (VRAMD, 18000EH, bit8)

VRAM-B mode (VRBMD, 18000EH, bit9)

Do not divide into 0: 2 banks
Divide into 1: 2 banks

VRAM cycle pattern (for VRAM-A or VRAM-A0) (VCPnA0, 180010H, 180012H)

VRAM cycle pattern (for VRAM-A1) (VCPnA1, 180014H, 180016H)

VRAM cycle pattern (for VRAM-B or VRAM-B0) (VCPnB0, 180018H, 18001AH)

VRAM cycle pattern (for VRAM-B1) (VCPnB1, 18001CH, 18001EH)

For timing T0 (VCPP0xx, 18001yH, bit15-12)
For timing T1 (VCPP1xx, 18001yH, bits 11-8)
For timing T2 (VCPP2xx, 18001yH, bit7-4)
For timing T3 (VCPP3xx, 18001yH, bit3-0)
For timing T4 (VCPP4xx, 18001zH, bit15-12)
For timing T5 (VCPP5xx, 18001zH, bits 11-8)
For timing T6 (VCPP6xx, 18001zH, bit7-4)
For timing T7 (VCPP7xx, 18001zH, bit3-0)
- 0000: NBG0 pattern name data read
- 0001: NBG1 pattern name data read
- 0010: NBG2 pattern name data read
- 0011: NBG3 pattern name data read
- 0100: NBG0 character pattern name data read
- 0101: NBG1 character pattern name data read
- 0110: NBG2 character pattern name data read
- 0111: NBG3 character pattern name data read
- 1100: Vertical cell scroll table data read for NBG0
- 1101: Vertical cell scroll table data read for NBG1
- 1110: CPU read / write
- 1111: Do not access

Color RAM mode (CRMD, 18000EH, bit13-13)

00: Mode 0: RGB 5 bits each, 1024 color setting
01: Mode 1: 2048 color setting with 5 bits each for RGB
10: Mode 0: RGB 8 bits each, 1024 color setting

● Scroll screen

Normal scroll

NBG0
NBG1
NBG2
NBG3

Rotating scroll

RBG0
RBG1

External input screen

EXBG

Line screen

Line color screen: LNCL
Back screen: BACK

● Normal scroll screen (NBG0)

Transparent display enabled (N0TPON, 18020H, bit8)

0: Enable transparent code (transparent code dots become transparent)
1: Disable the transparency code (dots in the transparency code are displayed according to their values)

Screen display enabled (N0ON, 18020H, bit0)

0: Cannot be displayed (VRAM access for display is not performed)
1: Can be displayed

Number of character colors (N0CHCN, 180028H, bit6-4)

000: 16 colors (palette format)
001: 256 colors (palette format)
010: 2048 colors (palette format)
011: 32768 colors (RGB format)
100: 16.77 million colors (RGB format)

Bitmap enable (N0BMEN, 180028H, bit1)

0: Display in cell format → Reference: Cell format NBG0
1: Display in bitmap format → Reference: Bitmap format NBG0

Mosaic enable (N0BMEN, 180022H, bit0)

0: No mosaic processing
1: Perform mosaic processing
↓

Mosaic size (MZSZx, 180022H)

Horizontal mosaic size (MZSZH, 180022H, bits 11-8)
Vertical mosaic size (MZSZV, 180022H, bits 15-12)

Screen scroll value (N0SCx, 180070H-180076H)

For horizontal direction (N0SCX, 180070H, bit10-180072H, bit8)
For vertical direction (N0SCY, 180074H, bit10-180076H, bit8)

Coordinate increment (N0ZMx, 180078H-18007EH)

For horizontal direction (N0ZMX, 180078H, bit2 ~ 18007AH, bit8)
For vertical direction (N0ZMY, 18007CH, bit2 to 18007EH, bit8)

Reduced enable (N0ZMQT, N0ZMHF, 180098H, bits1 to 0)

00: Horizontal reduced display is not possible
01: Can be reduced to 1/2 in the horizontal direction
10: Can be reduced to 1/4 in the horizontal direction
11: Can be reduced to 1/4 in the horizontal direction

Line scroll interval (N0LSS, 18909AH, bit5-4)

00: For each line (non-interlaced, double-dense interlaced)
Every 2 lines (single dense interlace)
01: Every 2 lines (non-interlaced, double-dense interlaced)
Every 4 lines (single dense interlace)
Every 10: 4 line (non-interlaced, double-dense interlaced)
Every 8 lines (single dense interlace)
Every 11: 8 line (non-interlaced, double-dense interlaced)
Every 16 lines (single dense interlace)

Line zoom enabled (N0LZMX, 18909AH, bit3)

0: Do not scale
1: Scales horizontally in line units

Line scroll enable / vertical direction (N0LSCY, 18909AH, bit2)

0: Does not scroll
1: Scroll vertically in line units

Line scroll enable / horizontal direction (N0LSCX, 18909AH, bit1)

0: Does not scroll
1: Scroll horizontally in line units

Vertical cell scroll enable (N0VCSC, 18909AH, bit0)

0: Do not scroll vertical cells
1: Vertical cell scroll

Line scroll table address (N0LSTA, 1800A0H, bit2 to 1800A2H, bit1)

Vertical cell scroll table address (VCSTA, 18909CH, bit2 to 18909EH, bit1)

● Cell format (NBG0)

Character size (N0CHSZ, 180028H, bit0)

0: 1 horizontal cell x 1 vertical cell
1: 2 horizontal cells x 2 vertical cells

Pattern name data size (N0PNB, 180030H, bit15)

0: 2 words
1: 1 word

1 word (pattern name data size)

Character number auxiliary mode (N0CNSM, 180030H, bit14)

0: The character number in the pattern name data is 10 bits long,
Inversion function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Invert function cannot be specified

Special priority (N0SPR, 180030H, bit9)

(For pattern name auxiliary data)

Special color operation (N0SCC, 180030H, bit8)

(For pattern name auxiliary data)

Auxiliary palette number (N0SPLT, 180030H, bit7-5)

(For pattern name auxiliary data)

Auxiliary character number (N0SCN, 180030H, bit4 to 0)

(For pattern name auxiliary data)

Plain size (N0PLSZ, 18003AH, bit1-0)

00: 1 horizontal page x 1 vertical page
01: 2 horizontal pages x 1 vertical page
10: 2 horizontal pages x 2 vertical pages

Map offset (N0MP, 18003CH, bit2-0)

Map (N0MPx, 180040-180042H)

For plane A (N0MPA, 180040H, bit5 ~ 0)
For plane B (N0MPB, 180040H, bit13-8)
For plain C (N0MPC, 180042H, bit5 ~ 0)
For plane D (N0MPD, 180042H, bits 13-8)

● Bitmap format (NBG0)

Bitmap size (N0BMSZ, 180028H, bit3 ~ 2)

00: 512 dots wide x 256 dots high
01: Horizontal 512 dots x Vertical 512 dots
10: 1024 dots wide x 256 dots high
11: 1024 dots wide x 512 dots high

Special priority (N0BMPR, 18002CH, bit5)

Special color calculation (N0BMCC, 18002CH, bit4)

Auxiliary palette number (N0BMP, 18002CH, bit2 ~ 0)

Map offset (N0MP, 18003CH, bit2-0)

● Normal scroll screen (NBG1)

Transparent display enabled (N1TPON, 18020H, bit9)

0: Enable transparent code (transparent code dots become transparent)
1: Disable the transparency code (dots in the transparency code are displayed according to their values)

Screen display enabled (N1ON, 18020H, bit1)

0: Cannot be displayed (VRAM access for display is not performed)
1: Can be displayed

Number of character colors (N1CHCN, 180028H, bits 13-12)

000: 16 colors (palette format)
001: 256 colors (palette format)
010: 2048 colors (palette format)
011: 32768 colors (RGB format)
100: 16.77 million colors (RGB format)

Bitmap enable (N1BMEN, 180028H, bit9)

0: Display in cell format → Reference: Cell format NBG1
1: Display in bitmap format → Reference: Bitmap format NBG1

Mosaic enable (N1BMEN, 180022H, bit1)

0: No mosaic processing
1: Perform mosaic processing
↓

Mosaic size (MZSZx, 180022H)

Horizontal mosaic size (MZSZH, 180022H, bits 11-8)
Vertical mosaic size (MZSZV, 180022H, bits 15-12)

Screen scroll value (N1SCx, 180080H-180086H)

For horizontal direction (N1SCX, 180080H, bit10-180082H, bit8)
For vertical direction (N1SCY, 180084H, bit10-180086H, bit8)

Coordinate increment (N1ZMx, 180088H to 18008EH)

For horizontal direction (N1ZMX, 180088H, bit2 ~ 18808AH, bit8)
For vertical direction (N1ZMY, 18008CH, bit2 ~ 18808EH, bit8)

Reduced enable (N1ZMQT, N1ZMHF, 180098H, bit9-8)

00: Horizontal reduced display is not possible
01: Can be reduced to 1/2 in the horizontal direction
10: Can be reduced to 1/4 in the horizontal direction
11: Can be reduced to 1/4 in the horizontal direction

Line scroll interval (N1LSS, 18909AH, bit13-12)

00: For each line (non-interlaced, double-dense interlaced)
Every 2 lines (single dense interlace)
01: Every 2 lines (non-interlaced, double-dense interlaced)
Every 4 lines (single dense interlace)
Every 10: 4 line (non-interlaced, double-dense interlaced)
Every 8 lines (single dense interlace)
Every 11: 8 line (non-interlaced, double-dense interlaced)
Every 16 lines (single dense interlace)

Line zoom enabled (N1LZMX, 18909AH, bit11)

0: Do not scale
1: Scales horizontally in line units

Line scroll enable / vertical direction (N1LSCY, 18909AH, bit10)

0: Does not scroll
1: Scroll vertically in line units

Line scroll enable / horizontal direction (N1LSCX, 18909AH, bit9)

0: Does not scroll
1: Scroll horizontally in line units

Vertical cell scroll enable (N1VCSC, 18909AH, bit8)

0: Do not scroll vertical cells
1: Vertical cell scroll

Line scroll table address (N1LSTA, 1800A4H, bit2 to 1800A6H, bit1)

Vertical cell scroll table address (VCSTA, 18909CH, bit2 to 18909EH, bit1)

● Cell format (NBG1)

Character size (N1CHSZ, 180028H, bit8)

0: 1 horizontal cell x 1 vertical cell
1: 2 horizontal cells x 2 vertical cells

Pattern name data size (N1PNB, 18032H, bit15)

0: 2 words
1: 1 word
↓

1 word (pattern name data size)

Character number auxiliary mode (N1CNSM, 18032H, bit14)

0: The character number in the pattern name data is 10 bits long,
Inversion function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Invert function cannot be specified

Special priority (N1SPR, 18032H, bit9)

(For pattern name auxiliary data)

Special color operation (N1SCC, 18032H, bit8)

(For pattern name auxiliary data)

Auxiliary palette number (N1SPLT, 18032H, bit7-5)

(For pattern name auxiliary data)

Auxiliary character number (N1SCN, 18032H, bit4 to 0)

(For pattern name auxiliary data)

Plain size (N1PLSZ, 18003AH, bit3 ~ 2)

00: 1 horizontal page x 1 vertical page
01: 2 horizontal pages x 1 vertical page
10: 2 horizontal pages x 2 vertical pages

Map offset (N1MP, 18003CH, bit6-4)

Map (N1MPx, 180044-180046H)

For plane A (N1MPA, 180040H, bit5 ~ 0)
For plane B (N1MPB, 180040H, bit13-8)
For plain C (N1MPC, 180042H, bit5 ~ 0)
For plane D (N1MPD, 180042H, bits 13-8)

● Bitmap format (NBG1)

Bitmap size (N1BMSZ, 180028H, bits 11-10)

00: 512 dots wide x 256 dots high
01: Horizontal 512 dots x Vertical 512 dots
10: 1024 dots wide x 256 dots high
11: 1024 dots wide x 512 dots high

Special priority (N1BMPR, 18002CH, bit3)

Special color calculation (N1BMCC, 18002CH, bit12)

Auxiliary palette number (N1BMP, 18002CH, bit10-8)

Map offset (N1MP, 18003CH, bit6-4)

● Normal scroll screen (NBG2)

Transparent display enabled (N2TPON, 18020H, bit10)

0: Enable transparent code (transparent code dots become transparent)
1: Disable the transparency code (dots in the transparency code are displayed according to their values)

Screen display enabled (N2ON, 18020H, bit2)

0: Cannot be displayed (VRAM access for display is not performed)
1: Can be displayed

Number of character colors (N2CHCN, 18002AH, bit1)

0: 16 colors (palette format)
1: 256 colors (palette format)

Display in cell format → Reference: Cell format NBG2

Mosaic enable (N2BMEN, 180022H, bit2)

0: No mosaic processing
1: Perform mosaic processing
↓

Mosaic size (MZSZx, 180022H)

Horizontal mosaic size (MZSZH, 180022H, bits 11-8)
Vertical mosaic size (MZSZV, 180022H, bits 15-12)

Screen scroll value (N2SCx, 180090H to 180092H)

For horizontal direction (N2SCX, 180090H, bit10 ~ 0)
For vertical direction (N2SCY, 180092H, bit10-0)

● Cell format (NBG2)

Character size (N2CHSZ, 18002AH, bit0)

0: 1 horizontal cell x 1 vertical cell
1: 2 horizontal cells x 2 vertical cells

Pattern name data size (N2PNB, 180034H, bit15)

0: 2 words
1: 1 word
↓

1 word (pattern name data size)

Character number auxiliary mode (N2CNSM, 180034H, bit14)

0: The character number in the pattern name data is 10 bits long,
Inversion function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Invert function cannot be specified

Special priority (N2SPR, 180034H, bit9)

(For pattern name auxiliary data)

Special color calculation (N2SCC, 180034H, bit8)

(For pattern name auxiliary data)

Auxiliary palette number (N2SPLT, 180034H, bit7-5)

(For pattern name auxiliary data)

Auxiliary character number (N2SCN, 180034H, bit4 to 0)

(For pattern name auxiliary data)

Plain size (N2PLSZ, 18003AH, bit5-4)

00: 1 horizontal page x 1 vertical page
01: 2 horizontal pages x 1 vertical page
10: 2 horizontal pages x 2 vertical pages

Map offset (N2MP, 18003CH, bit10-8)

Map (N2MPx, 180048H-18004AH)

For plane A (N2MPA, 180048H, bit5-0)
For plane B (N2MPB, 180048H, bits 13-8)
For plain C (N2MPC, 18004AH, bit5 ~ 0)
For plane D (N2MPD, 18004AH, bit13-8)

● Normal scroll screen (NBG3)

Transparent display enabled (N3TPON, 18020H, bit11)

0: Enable transparent code (transparent code dots become transparent)
1: Disable the transparency code (dots in the transparency code are displayed according to their values)

Screen display enabled (N3ON, 18020H, bit3)

0: Cannot be displayed (VRAM access for display is not performed)
1: Can be displayed

Number of character colors (N3CHCN, 18002AH, bit5)

0: 16 colors (palette format)
1: 256 colors (palette format)

Display in cell format → Reference: Cell format NBG3

Mosaic enable (N3BMEN, 180022H, bit3)

0: No mosaic processing
1: Perform mosaic processing
↓

Mosaic size (MZSZx, 180022H)

Horizontal mosaic size (MZSZH, 180022H, bits 11-8)
Vertical mosaic size (MZSZV, 180022H, bits 15-12)

Screen scroll value (N3SCx, 180094H-180096H)

For horizontal direction (N3SCX, 180094H, bit10 ~ 0)
For vertical direction (N3SCY, 180096H, bit10-0)

● Cell format (NBG3)

Character size (N3CHSZ, 18002AH, bit4)

0: 1 horizontal cell x 1 vertical cell
1: 2 horizontal cells x 2 vertical cells

Pattern name data size (N3PNB, 180036H, bit15)

0: 2 words
1: 1 word
↓

1 word (pattern name data size)

Character number auxiliary mode (N3CNSM, 180036H, bit14)

0: The character number in the pattern name data is 10 bits long,
Inversion function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Invert function cannot be specified

Special priority (N3SPR, 180036H, bit9)

(For pattern name auxiliary data)

Special color operation (N3SCC, 180036H, bit8)

(For pattern name auxiliary data)

Auxiliary palette number (N3SPLT, 180036H, bit7-5)

(For pattern name auxiliary data)

Auxiliary character number (N3SCN, 180036H, bit4 to 0)

(For pattern name auxiliary data)

Plain size (N3PLSZ, 18003AH, bit7-6)

00: 1 horizontal page x 1 vertical page
01: 2 horizontal pages x 1 vertical page
10: 2 horizontal pages x 2 vertical pages

Map offset (N3MP, 18003CH, bit14-12)

Map (N3MPx, 18004CH ~ 18004EH)

For plane A (N3MPA, 18004CH, bit5 ~ 0)
For plane B (N3MPB, 18004CH, bit13-8)
For plain C (N3MPC, 18004EH, bit5 ~ 0)
For plane D (N3MPD, 18004EH, bit13-8)

● Rotating scroll screen (RBG0)

Transparent display enabled (R0TPON, 18020H, bit12)

0: Enable transparent code (transparent code dots become transparent)
1: Disable the transparency code (dots in the transparency code are displayed according to their values)

Screen display enabled (R0ON, 18020H, bit4)

0: Cannot be displayed (VRAM access for display is not performed)
1: Can be displayed

Number of character colors (R0CHCN, 18002AH, bit14-12)

000: 16 colors (palette format)
001: 256 colors (palette format)
010: 2048 colors (palette format)
011: 32768 colors (RGB format)
100: 16.77 million colors (RGB format)

Bitmap enable (R0BMEN, 18002AH, bit9)

0: Display in cell format → Reference: Cell format RBG0
1: Display in bitmap format → Reference: Bitmap format RBG0

Mosaic enable (R0BMEN, 180022H, bit4)

0: No mosaic processing
1: Perform mosaic processing
↓

Mosaic size (MZSZx, 180022H)

Horizontal mosaic size (MZSZH, 180022H, bits 11-8)
Vertical mosaic size (MZSZV, 180022H, bits 15-12)

Rotation databank specification (RDBSxx, 18000EH)

For VRAM-A0 (or VRAM-A) (RDBSA0,18000EH, bits1-0)
For VRAM-A1 (RDBSA1,18000EH, bit3 ~ 2)
For VRAM-B0 (or VRAM-B) (RDBSB0,18000EH, bit5-4)
For VRAM-B1 (RDBSB1,18000EH, bits7-6)
- 00: Not used as RAM for RBG0
- 01: RBG0 coefficient data table RAM
- 10: RAM for pattern name table of RBG0
- 11: RAM for character pattern table of RBG0
  (Or for bitmap patterns)

Parameter read enable (RxxxSTRE, 1800B2H)

For Xst of rotation parameter A (RAXSTRE, 1800B2H, bit0)
For Xst of rotation parameter B (RAXSTRE, 1800B2H, bit8)
For Yst of rotation parameter A (RAXSTRE, 1800B2H, bit1)
For Yst of rotation parameter B (RAXSTRE, 1800B2H, bit9)
For KAst of rotation parameter A (RAXSTRE, 1800B2H, bit2)
For KAst of rotation parameter B (RAXSTRE, 1800B2H, bit10)
- 0: Do not read
- 1: Read the specified parameter on that line

Rotation parameter table address (RPTA, 1800BCH, bit12 to 1800BEH, bit1)

Rotation parameter mode (RPMD, 1800B0H, bit1-0)

00: Mode 0: Rotation parameter A
01: Mode 1: Rotation parameter B
10: Mode 2: Rotation parameter A Switches between the image of A and the image of B according to the coefficient table read from the coefficient table of rotation parameter A.
11: Mode 3: Switch between image A and image B by rotation parameter window

Coefficient line color enable (RxKLCE, 1800B4H)

For rotation parameter A (RAKLCE, 1800B4H, bit4)
For rotation parameter B (RBKLCE, 1800B4H, bit12)
- 0: Do not use the line color screen data in the coefficient data
- 1: Use

Coefficient data mode (RxKMD, 1800B4H)

For rotation parameter A (RAKMD, 1800B4H, bit3 ~ 2)
For rotation parameter B (RAKMD, 1800B4H, bits 11-10)
- 00: Mode 0: Used as enlargement / reduction coefficient kx, ky
- 01: Mode 1: Used as scaling factor kx
- 10: Mode 2: Used as enlargement / reduction coefficient ky
- 11: Mode 3: Used as viewpoint coordinates Xp after rotation conversion

Coefficient data size (RxKDBS, 18004BH)

For rotation parameter A (RAKDBS, 1800B4H, bit1)
For rotation parameter B (RBKDBS, 1800B4H, bit9)
- 0: 2 words
- 1: 1 word

Coefficient table enabled (RxKTE, 1800B4H)

For rotation parameter A (RAKTE, 1800B4H, bit0)
For rotation parameter B (RBKTE, 1800B4H, bit8)
- 0: Do not use coefficient table
- 1: Use

Coefficient table address offset (RxKTAOS, 1800B6H)

For rotation parameter A (RAKTAOS, 1800B6H, bit2-0)
For rotation parameter B (RBKTAOS, 1800B6H, bit10-8)

● Cell format (RBG0)

Character size (R0CHSZ, 18002AH, bit8)

0: 1 horizontal cell x 1 vertical cell
1: 2 horizontal cells x 2 vertical cells

Pattern name data size (R0PNB, 180038H, bit15)

0: 2 words
1: 1 word
↓

1 word (pattern name data size)

Character number auxiliary mode (R0CNSM, 180038H, bit14)

0: The character number in the pattern name data is 10 bits long,
Inversion function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Invert function cannot be specified

Special priority (R0SPR, 180038H, bit9)

(For pattern name auxiliary data)

Special color operation (R0SCC, 180038H, bit8)

(For pattern name auxiliary data)

Auxiliary palette number (R0SPLT, 180038H, bit7-5)

(For pattern name auxiliary data)

Auxiliary character number (R0SCN, 180038H, bit4 to 0)

(For pattern name auxiliary data)

Rotation parameter mode (RPMD, 1800B0H, bit1-0)

00: Mode 0 : Use rotation parameter A → Reference: For rotation parameter A
01: Mode 1 : Use rotation parameter B → Reference: For rotation parameter B

● Bitmap format (RBG0)

Bitmap size (R0BMSZ, 18002AH, bit10)

0: 512 dots wide x 256 dots high
1: 512 dots wide x 512 dots high

Special priority (R0BMPR, 18002EH, bit5)

Special color calculation (N0BMCC, 18002EH, bit4)

Auxiliary palette number (N0BMP, 18002EH, bit2 ~ 0)

Rotation parameter mode (RPMD, 1800B0H, bit1-0)

00: Mode 0 : Use rotation parameter A
01: Mode 1 : Use rotation parameter B
- Map offset (for rotation parameter A) (RAMP, 18003EH, bit2-0)
- Map offset (for rotation parameter B) (RBMP, 18003EH, bit6-4)

● For rotation parameter A (RBG0)

Plain size (RAPLSZ, 18003AH, bit9-8)

00: 1 horizontal page x 1 vertical page
01: 2 horizontal pages x 1 vertical page
10: 2 horizontal pages x 2 vertical pages

Screen over processing (RAOVR, 18003AH, bit11-10)

00: The image set in the display area is repeated outside the display area.
01: The character pattern set in the screen over pattern name register is repeated outside the display area.
10: Make everything outside the display area transparent
11: Forcibly set the display area to 0 ≤ X <512, 0 ≤ Y <512 regardless of the plane size or bitmap size, and make everything outside the area transparent.

Screen over pattern name register (RAOPN, 1800B8H, bit15 to 0)

Map offset (RAMP, 18003EH, bit2-0)

Map (RAMPx, 180050H to 18005EH)

For plane A (RAMPA, 180050H, bit5-0)
For plane B (RAMPB, 180050H, bits 13-8)
For plain C (RAMPC, 180052H, bit5-0)
For plane D (RAMPD, 180052H, bits 13-8)
For plane E (RAMPE, 180054H, bit5-0)
For plain F (RAMPF, 180054H, bit13-8)
For plain G (RAMPG, 180056H, bit5-0)
For plain H (RAMPH, 180056H, bits 13-8)
For plane I (RAMPI, 180058H, bit5-0)
For plain J (RAMPJ, 180058H, bit13-8)
For plain K (RAMPK, 18005AH, bit5-0)
For plane L (RAMPL, 18005AH, bit13-8)
For plain M (RAMPM, 18005CH, bit5-0)
For plane N (RAMPN, 18005CH, bits 13-8)
For plane O (RAMPO, 18005EH, bit5-0)
For plain P (RAMPP, 18005EH, bit13-8)

● For rotation parameter B (RBG0)

Plain size (RBPLSZ, 18003AH, bit13-12)

00: 1 horizontal page x 1 vertical page
01: 2 horizontal pages x 1 vertical page
10: 2 horizontal pages x 2 vertical pages

Screen over processing (RBOVR, 18003AH, bit15-14)

00: The image set in the display area is repeated outside the display area.
01: The character pattern set in the screen over pattern name register is repeated outside the display area.
10: Make everything outside the display area transparent
11: Forcibly set the display area to 0 ≤ X <512, 0 ≤ Y <512 regardless of the plane size or bitmap size, and make everything outside the area transparent.

Screen over pattern name register (RBOPN, 1800BAH, bit15 to 0)

Map offset (RBMP, 18003EH, bit6-4)

Map (RBMPx, 180060H to 18006EH)

For plane A (RBMPA, 180060H, bit5-0)
For plane B (RBMPB, 180060H, bit13-8)
For plain C (RBMPC, 180062H, bit5-0)
For plane D (RBMPD, 180062H, bits 13-8)
For plane E (RBMPE, 180064H, bit5-0)
For plain F (RBMPF, 180064H, bits 13-8)
For plain G (RBMPG, 180066H, bit5 ~ 0)
For plain H (RBMPH, 180066H, bit13-8)
For plane I (RBMPI, 180068H, bit5-0)
For plain J (RBMPJ, 180068H, bit13-8)
For plain K (RBMPK, 18006AH, bit5-0)
For plain L (RBMPL, 18006AH, bit13-8)
For plain M (RBMPM, 18006CH, bit5 ~ 0)
For plain N (RBMPN, 18006CH, bit13-8)
For plane O (RBMPO, 18006EH, bit5-0)
For plain P (RBMPP, 18006EH, bit13-8)

● Rotating scroll screen (RBG1)

Transparent display enabled (R1TPON, 18020H, bit8)

0: Enable transparent code (transparent code dots become transparent)
1: Disable the transparency code (dots in the transparency code are displayed according to their values)

Screen display enabled (R1ON, 18020H, bit5)

0: Cannot be displayed (VRAM access for display is not performed)
1: Can be displayed

Number of character colors (R1CHCN, 180028H, bit6-4)

000: 16 colors (palette format)
001: 256 colors (palette format)
010: 2048 colors (palette format)
011: 32768 colors (RGB format)
100: 16.77 million colors (RGB format)

Display in cell format → Reference: Cell format RBG1

Mosaic enable (R1BMEN, 180022H, bit0)

0: No mosaic processing
1: Perform mosaic processing
↓

Mosaic size (MZSZx, 180022H)

Horizontal mosaic size (MZSZH, 180022H, bits 11-8)
Vertical mosaic size (MZSZV, 180022H, bits 15-12)

● Cell format (RBG1)

Character size (for NBG0) (N0CHSZ, 180028H, bit0)

0: 1 horizontal cell x 1 vertical cell
1: 2 horizontal cells x 2 vertical cells

Pattern name data size (NBG0) (N0PNB, 180030H, bit15)

0: 2 words
1: 1 word
↓

1 word (pattern name data size)

Character number auxiliary mode (NBG0) (N0CNSM, 180030H, bit14)

0: The character number in the pattern name data is 10 bits long,
Inversion function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Invert function cannot be specified

Special priority (NBG0) (R1SPR, 180030H, bit9)

(For pattern name auxiliary data)

Special color operation (NBG0) (R1SCC, 180030H, bit8)

(For pattern name auxiliary data)

Auxiliary pallet number (NBG0) (R1SPLT, 180030H, bit7-5)

(For pattern name auxiliary data)

Auxiliary character number (NBG0) (R1SCN, 180030H, bit4 to 0)

(For pattern name auxiliary data)

Use rotation parameter B → See: For rotation parameter B

● For rotation parameter B (RBG1)

Plain size (RBPLSZ, 18003AH, bit13-12)

00: 1 horizontal page x 1 vertical page
01: 2 horizontal pages x 1 vertical page
10: 2 horizontal pages x 2 vertical pages

Screen over processing (RBOVR, 18003AH, bit15-14)

00: The image set in the display area is repeated outside the display area.
01: The character pattern set in the screen over pattern name register is repeated outside the display area.
10: Make everything outside the display area transparent
11: Forcibly set the display area to 0 ≤ X <512, 0 ≤ Y <512 regardless of the plane size or bitmap size, and make everything outside the area transparent.

Screen over pattern name register (RBOPN, 1800BAH, bit15 to 0)

Map offset (RBMP, 18003EH, bit6-4)

Map (RBMPx, 180060H to 18006EH)

For plane A (RBMPA, 180060H, bit5-0)
For plane B (RBMPB, 180060H, bit13-8)
For plain C (RBMPC, 180062H, bit5-0)
For plane D (RBMPD, 180062H, bits 13-8)
For plane E (RBMPE, 180064H, bit5-0)
For plain F (RBMPF, 180064H, bits 13-8)
For plain G (RBMPG, 180066H, bit5 ~ 0)
For plain H (RBMPH, 180066H, bit13-8)
For plane I (RBMPI, 180068H, bit5-0)
For plain J (RBMPJ, 180068H, bit13-8)
For plain K (RBMPK, 18006AH, bit5-0)
For plain L (RBMPL, 18006AH, bit13-8)
For plain M (RBMPM, 18006CH, bit5 ~ 0)
For plain N (RBMPN, 18006CH, bit13-8)
For plane O (RBMPO, 18006EH, bit5-0)
For plain P (RBMPP, 18006EH, bit13-8)

● Line color screen (LNCL)

Line color screen color mode (LCCLMD, 1800A8H, bit15)

0: Make it a single color
1: Specify for each line

● Back screen (BACK)

Back screen color mode (BKCLMD, 1800ACH, bit15)

0: Make it a single color
1: Specify for each line

Back screen table address (BKTA, 1800ACH, bit12 to 1800AEH, bit0)

● Window

Normal rectangular window

Normal line window

Sprite window

● Normal rectangular window

Window position (horizontal coordinates) (WxxX, 1800C0H to 1800CCH)

W0 start point coordinates (W0SX, 1800C0H, bit9 to 0)
W0 end point coordinates (W0EX, 1800C4H, bit9 to 0)
W1 start point coordinates (W1SX, 1800C8H, bit9-0)
W1 end point coordinates (W1EX, 1800CCH, bit9-0)

Window position (vertical coordinates) (WxxY, 1800C2H to 1800CEH)

W0 start point coordinates (W0SY, 1800C2H, bit9 to 0)
W0 end point coordinates (W0EY, 1800C6H, bit9-0)
W1 start point coordinates (W1SY, 1800CAH, bit9-0)
W1 end point coordinates (W1EY, 1800CEH, bit9-0)

● Normal line window

Line window enabled (WxLWE, 1800D8H to 1800DCH)

For W0 (W0LWE, 1800D8H, bit15)
For W1 (W1LWE, 1800DCH, bit15)
- 0: Do not change the normal window to a line window
- 1: Do

Line window table address (WxLWTA, 1800D8H to 1800DEH)

For W0 (W0LWTA, 1800D8H, bit2 to 1800DAH, bit1)
For W1 (W1LWTA, 1800DCH, bit2 to 1800DEH, bit1)

● Sprite window

Sprite window enable (SPWINEN, 1800E0H, bit4)

0: Do not use sprite window
1: Use

● Window control

Window logic (xxLOG, 1800D0H to 1800D6H)

For NBG0 (or for RBG1) of the transparent processing window (N0LOG, 1800D0H, bit7)
For NBG1 (or EXBG) of transparent processing window (N1LOG, 1800D0H, bit15)
For NBG2 of transparent processing window (N2LOG, 1800D2H, bit7)
For NBG3 of transparent processing window (N3LOG, 1800D2H, bit15)
For RBG0 of transparent processing window (R0LOG, 1800D4H, bit7)
For sprites in transparent processing windows (SPLOG, 1800D4H, bit15)
For rotation parameter window (RPLOG, 1800D6H, bit7)
For color calculation window (CCLOG, 1800D6H, bit15)
- 0: OR
- 1: AND

Window enable (for W0) (xxW0E, 1800D0H to 1800D6H)

For NBG0 (or for RBG1) of the transparent processing window (N0W0E, 1800D0H, bit1)
For NBG1 (or for EXBG) of the transparent processing window (N1W0E, 1800D0H, bit9)
For NBG2 of transparent processing window (N2W0E, 1800D2H, bit1)
For NBG3 of transparent processing window (N3W0E, 1800D2H, bit9)
For RBG0 of transparent processing window (R0W0E, 1800D4H, bit1)
For sprites in transparent processing windows (SPW0E, 1800D4H, bit9)
For rotation parameter window (RPW0E, 1800D6H, bit1)
For color calculation window (CCW0E, 1800D6H, bit9)
- 0: W0 window is not used
- 1: Use

Window enable (for W1) (xxW1E, 1800D0H to 1800D6H)

For NBG0 (or for RBG1) of the transparent processing window (N0W1E, 1800D0H, bit3)
For NBG1 (or for EXBG) of transparent processing window (N1W1E, 1800D0H, bit11)
For NBG2 of transparent processing window (N2W1E, 1800D2H, bit3)
For NBG3 of transparent processing window (N3W1E, 1800D2H, bit11)
For RBG0 of transparent processing window (R0W1E, 1800D4H, bit3)
For sprites in transparent processing windows (SPW1E, 1800D4H, bit11)
For rotation parameter window (RPW1E, 1800D6H, bit3)
For color calculation window (CCW1E, 1800D6H, bit11)
- 0: Do not use W1 window
- 1: Use

Window enable (for SW) (xxSWE, 1800D0H to 1800D6H)

For NBG0 (or for RBG1) of the transparent processing window (N0SWE, 1800D0H, bit5)
For NBG1 (or EXBG) of transparent processing window (N1SWE, 1800D0H, bit13)
For NBG2 of transparent processing window (N2SWE, 1800D2H, bit5)
For NBG3 of transparent processing window (N3SWE, 1800D2H, bit13)
For RBG0 of transparent processing window (R0SWE, 1800D4H, bit5)
For sprites in transparent processing windows (SPSWE, 1800D4H, bit13)
For rotation parameter window (RPSWE, 1800D6H, bit5)
For color calculation window (CCSWE, 1800D6H, bit13)
- 0: Do not use SW window
- 1: Use

Window area (for W0) (xxW0A, 1800D0H to 1800D6H)

For NBG0 (or for RBG1) of the transparent processing window (N0W0A, 1800D0H, bit0)
For NBG1 (or for EXBG) of transparent processing window (N1W0A, 1800D0H, bit8)
For NBG2 of transparent processing window (N2W0A, 1800D2H, bit0)
For NBG3 of transparent processing window (N3W0A, 1800D2H, bit8)
For RBG0 of transparent processing window (R0W0A, 1800D4H, bit0)
For sprites in transparent processing windows (SPW0A, 1800D4H, bit8)
For rotation parameter window (RPW0A, 1800D6H, bit0)
For color calculation window (CCW0A, 1800D6H, bit8)
- 0: Enable the inside of the W0 window
- 1: Enable the outside of the W0 window

Window area (for W1) (xxW1A, 1800D0H to 1800D6H)

For NBG0 (or for RBG1) of the transparent processing window (N0W1A, 1800D0H, bit2)
For NBG1 (or for EXBG) of transparent processing window (N1W1A, 1800D0H, bit10)
For NBG2 of transparent processing window (N2W1A, 1800D2H, bit2)
For NBG3 of transparent processing window (N3W1A, 1800D2H, bit10)
For RBG0 of transparent processing window (R0W1A, 1800D4H, bit2)
For sprites in transparent processing windows (SPW1A, 1800D4H, bit10)
For rotation parameter window (RPW1A, 1800D6H, bit2)
For color calculation window (CCW1A, 1800D6H, bit10)
- 0: Enable the inside of the W1 window
- 1: Enable the outside of the W1 window

Window area (for SW) (xxSWA, 1800D0H to 1800D6H)

For NBG0 (or for RBG1) of the transparent processing window (N0SWA, 1800D0H, bit4)
For NBG1 (or EXBG) of transparent processing window (N1SWA, 1800D0H, bit12)
For NBG2 of transparent processing window (N2SWA, 1800D2H, bit4)
For NBG3 of transparent processing window (N3SWA, 1800D2H, bit12)
For RBG0 of transparent processing window (R0SWA, 1800D4H, bit4)
For sprites in transparent processing windows (SPSWA, 1800D4H, bit12)
For rotation parameter window (RPSWA, 1800D6H, bit4)
For color calculation window (CCSWA, 1800D6H, bit12)
- 0: Enable the inside of the SW window
- 1: Enable the outside of the SW window

● Sprite

Sprite color calculation condition (SPCCCS, 1800E0H, bit13-12)

00: Only when (priority number) ≤ (color calculation condition number)
01: Only when (priority number) = (color calculation condition number)
10: Only when (priority number) ≥ (color calculation condition number)
11: Only when the most significant bit (LSB) of the color data is 1.

Sprite color calculation condition number (SPCCN, 1800E0H, bit10-8)

Sprite color mode (SPCLMD, 1800E0H, bit5)

0: All sprite data is in palette format only
1: Palette format and RGB format are mixed

Sprite window enable (SPWINEN, 1800E0H, bit4)

0: Do not use sprite window
1: Use

Sprite type (SPTYPE, 1800E0H, bit3 ~ 0)

Priority number (for sprites) (SxPRIN, 1800F0H to 1800F6H)

Sprite register 0 (S0PRIN, 1800F0H, bit2 to 0)
Sprite register 1 (S1PRIN, 1800F0H, bits10-8)
Sprite register 2 (S2PRIN, 1800F2H, bit2-0)
Sprite register 3 (S3PRIN, 1800F2H, bit10-8)
Sprite register 4 (S4PRIN, 1800F4H, bit2-0)
Sprite register 5 (S5PRIN, 1800F4H, bit10-8)
Sprite register 6 (S6PRIN, 1800F6H, bit2-0)
Sprite register 7 (S7PRIN, 1800F6H, bit10-8)

Color calculation ratio (for sprites) (SxCCRT, 180100H to 180106H)

Sprite register 0 (S0CCRT, 180100H, bit4 to 0)
Sprite register 1 (S1CCRT, 180100H, bits12-8)
Sprite register 2 (S2CCRT, 180102H, bit4 to 0)
Sprite register 3 (S3CCRT, 180102H, bits12-8)
Sprite register 4 (S4CCRT, 180104H, bit4 to 0)
Sprite register 5 (S5CCRT, 180104H, bits12-8)
Sprite register 6 (S6CCRT, 180106H, bit4 to 0)
Sprite register 7 (S7CCRT, 180106H, bits12-8)

● Dot color data

Color RAM address offset (xxCAOS, 1800E4H to 180E6H)

For NBG0 (or for RBG1) (N0CAOS, 1800E4H, bit2-0)
For NBG1 (or for EXBG) (N1CAOS, 1800E4H, bit6-4)
For NBG2 (N2CAOS, 1800E4H, bit10-8)
For NBG3 (N3CAOS, 1800E4H, bit14-12)
For RBG0 (R0CAOS, 1800E6H, bit2 ~ 0)
For sprites (SPCAOS, 1800E6H, bit6-4)

Special function code select (xxSFCS, 180024H)

For NBG0 (or for RBG1) (N0SFCS, 180024H, bit0)
For NBG1 (or for EXBG) (N1SFCS, 180024H, bit1)
For NBG2 (N2SFCS, 180024H, bit2)
For NBG3 (N3SFCS, 180024H, bit3)
For RBG0 (R0SFCS, 180024H, bit4)
- 0: Enable special function code A
- 1: Enable special function code B

Special function code (SFCDxx, 180026H)

For special function code A (SFCDAx, 180026H, bit7 to 0)
For special function code B (SFCDBx, 180026H, bits15-8)
- SFCDx0: When the lower 4 bits of the dot color code are 0H or 1H
- SFCDx1: When the lower 4 bits of the dot color code are 2H or 3H
- SFCDx2: When the lower 4 bits of the dot color code are 4H or 5H
- SFCDx3: When the lower 4 bits of the dot color code are 6H or 7H
- SFCDx4: When the lower 4 bits of the dot color code are 8H or 9H
- SFCDx5: When the lower 4 bits of the dot color code are AH or BH
- SFCDx6: When the lower 4 bits of the dot color code are CH or DH
- SFCDx7: When the lower 4 bits of the dot color code are EH or FH
  - 0: Do not use special functions
  - 1: Use

● Priority

Line color insertion enabled (xxLCEN, 1800E8H)

For NBG0 (or for RBG1) (N0CAOS, 1800E8H, bit0)
For NBG1 (or for EXBG) (N1CAOS, 1800E8H, bit1)
For NBG2 (N2CAOS, 1800E8H, bit2)
For NBG3 (N3CAOS, 1800E8H, bit3)
For RBG0 (R0CAOS, 1800E8H, bit4)
For sprites (SPCAOS, 1800E8H, bit5)
- 0: Do not insert the line screen when the corresponding screen becomes the top image
- 1: Insert the line screen

Special priority mode (xxSPRM, 1800EAH)

For NBG0 (or for RBG1) (N0SPRM, 1800EAH, bit1-0)
For NBG1 (or for EXBG) (N1SPRM, 1800EAH, bit3 ~ 2)
For NBG2 (N2SPRM, 1800EAH, bit5-4)
For NBG3 (N3SPRM, 1800EAH, bit7 ~ 6)
For RBG0 (R0SPRM, 1800EAH, bit9-8)
- 00: Mode 0: Specify the least significant bit of the number for each screen
- 01: Mode 1: The least significant bit of the number is specified for each character.
- 10: Mode 2: Specify the least significant bit of the number for each dot

Priority number (for scroll screen) (xxPRIN, 1800F8H to 1800FCH)

For NBG0 (or for RBG1) (N0PRIN, 1800F8H, bit12-0)
For NBG1 (or for EXBG) (N1PRIN, 1800F8H, bit10-8)
For NBG2 (N2PRIN, 1800FAH, bit12-0)
For NBG3 (N3PRIN, 1800FAH, bit10-8)
For RBG0 (R0PRIN, 1800FCH, bit12 ~ 0)

● Color calculation

Blur operation enabled (BOKEN, 1800ECH, bit15)

0: Do not use the blur calculation function
1: Use

Blurred screen number (BOKN, 1800ECH, bit14-12)

000: Sprite
001: RBG0
010: NBG0 or RBG1
100: NBG1 or EXBG
101: NBG2
110: NBG3

Extended color arithmetic enable (EXCCEN, 1800ECH, bit10)

0: Do not use the extended color calculation function
1: Use

Color calculation ratio mode (CCRTMD, 1800ECH, bit9)

0: Mode 0: Color calculation ratio is specified on the top image side
1: Mode 1: The color calculation ratio is specified on the second image side.

Color calculation mode (CCMD, 1800ECH, bit8)

0: Mode 0: Add according to the value of the color calculation ratio register
1: Mode 1: Add as it is

Color calculation enabled (xxCCEN, 1800ECH)

For NBG0 (or for RBG1) (N0CCEN, 1800ECH, bit0)
For NBG1 (or for EXBG) (N1CCEN, 1800ECH, bit1)
For NBG2 (N2CCEN, 1800ECH, bit2)
For NBG3 (N3CCEN, 1800ECH, bit3)
For RBG0 (R0CCEN, 1800ECH, bit4)
For LNCL (LCCCEN, 1800ECH, bit5)
For sprites (SPCCEN, 1800ECH, bit6)
- 0: Do not perform color calculation
- 1: Do

Special color calculation mode (xxSCCM, 1800EEH)

For NBG0 (or for RBG1) (N0CCM, 1800EEH, bit1-0)
For NBG1 (or for EXBG) (N1CCM, 1800EEH, bit3 ~ 2)
For NBG2 (N2CCM, 1800EEH, bit5-4)
For NBG3 (N3CCM, 1800EEH, bit7 ~ 6)
For RBG0 (R0CCM, 1800EEH, bit9-8)
- 00: Mode 0: Color calculation enable is specified for each screen.
- 01: Mode 1: Color calculation enable is specified for each character.
- 10: Mode 2: Color calculation enable is specified for each dot.
- 11: Mode 3: Color operation enable is specified by the most significant bit of the color data.

Color calculation ratio (for scroll screen) (xxCCRT, 180108H to 18010EH)

For NBG0 (or for RBG1) (N0CCRT, 180108H, bit4-0)
For NBG1 (or for EXBG) (N1CCRT, 180108H, bit12-8)
For NBG2 (N2CCRT, 18010AH, bit4-0)
For NBG3 (N3CCRT, 18010AH, bit12-8)
For RBG0 (R0CCRT, 18010CH, bit4 ~ 0)
For LNCL (LCCCRT, 18010EH, bit4-0)
For BACK (BKCCRT, 18010EH, bit12-8)

● Color offset

Color offset enable (xxCOEN, 180110H)

For NBG0 (or for RBG1) (N0COEN, 180110H, bit0)
For NBG1 (or for EXBG) (N1COEN, 180110H, bit1)
For NBG2 (N2COEN, 180110H, bit2)
For NBG3 (N3COEN, 180110H, bit3)
For RBG0 (R0COEN, 180110H, bit4)
For BACK (BKCOEN, 180110H, bit5)
For sprites (SPCOEN, 180110H, bit6)
- 0: Do not use the color offset function
- 1: Do

Color offset select (xxCOSL, 180112H)

For NBG0 (or for RBG1) (N0COSL, 180112H, bit0)
For NBG1 (or for EXBG) (N1COSL, 180112H, bit1)
For NBG2 (N2COSL, 180112H, bit2)
For NBG3 (N3COSL, 180112H, bit3)
For RBG0 (R0COSL, 180112H, bit4)
For BACK (BKCOSL, 180112H, bit5)
For sprites (SPCOSL, 180112H, bit6)
- 0: Use the value of color offset A
- 1: Use the value of color offset B

Color offset value (COxxx, 180114H to 18011EH)

For RED data of color offset A (COARD, 180114H, bit8-0)
For GREEN data with color offset A (COAGR, 180116H, bit8-0)
For BLUE data with color offset A (COABL, 180118H, bit8-0)
For RED data of color offset B (COARD, 18011AH, bit8-0)
For GREEN data of color offset B (COAGR, 18011CH, bit8-0)
For BLUE data with color offset B (COABL, 18011EH, bit8-0)

● Shadow function

Shadow enable (xxSDEN, 1800E2H)

For NBG0 (or for RBG1) (N0SDEN, 1800E2H, bit0)
For NBG1 (or for EXBG) (N1SDEN, 1800E2H, bit1)
For NBG2 (N2SDEN, 1800E2H, bit2)
For NBG3 (N3SDEN, 1800E2H, bit3)
For RBG0 (R0SDEN, 1800E2H, bit4)
For BACK (BKSDEN, 1800E2H, bit5)
- 0: Do not use the shadow function (do not add shadow)
- 1: Use (shadow)

Transparent Shadowverse (TPSDSL, 1800E2H, bit8)

0: Disable transparent shadow sprites
0: Enable transparent shadow sprites

▲ Back ｜ Back ▼

★ HARDWARE Manual ★ VDP2 User's Manual ★ Chapter 15 How to use VDP2

■ 15.3 Bit configuration diagram

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓