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

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

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

■15.3 Bit configuration diagram: Each bit of a register has a relationship with other bits. The bit configuration diagram for each scroll screen and priority function is shown below.

●TV screen mode

TV screen display (DISP, 180000H, bit15)

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

Border color mode (BDCLMD, 180000H, bit8)

0: Display black
1: Display back screen

Interlace mode (LSMD, 180000H, bit7~6)

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

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

00: 224 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 or PAL TV)
011: 704 pixels (high resolution graphic B, NTSC or PAL 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 external enable register is read
1: Latch by external signal

External synchronization enable (EXSYEN, 180002H, bit8)

0: No external synchronization signal is input
1: Input an external synchronization signal to synchronize the TV screen display with the external one.

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

0: Display only in the settings display area
1: Display the image in all standard display areas

External screen enable (EXBGEN, 180002H, bit0)

0: Do not input external screen data
1: Input external screen data

●Screen status

External latch flag (EXLTFG, 180004H, bit9)

0: Not latched in register yet (cleared on read access)
1: HV counter value latched in register

External synchronization flag (EXSYFG, 180004H, bit8)

0: Not synced
1: Internal circuit synchronized

V blank flag (VBLANK, 180004H, bit3)

0: Scanning is during vertical display period
1: Scanning is during vertical retrace period (during VBLANK period)

H blank flag (HBLANK, 180004H, bit2)

0: Scanning is during horizontal display period
1: Scanning is during horizontal retrace period (during HBLANK period)

Scan field flag (ODD, 180004H, bit1)

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

TV system flag (PAL, 180004H, bit)

0: NTSC system
1: PAL method

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

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

●VRAM

VRAM size (VRAMSZ, 180006H, bit15)

0: 4Mbit
1: 8Mbit

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

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

Do not divide into 0:2 banks
Split 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, bit11~8)
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, bit11~8)
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: 1024 color settings with 5 bits each for RGB
01: Mode 1: 2048 color settings with 5 bits each for RGB
10: Mode 0: RGB each 8 bits, 1024 color settings

●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 enable (N0TPON, 180020H, bit8)

0: Enable transparent code (transparent code dots will be transparent)
1: Disable transparent code (transparent code dots are displayed according to their values)

Screen display enable (N0ON, 180020H, bit0)

0: Cannot display (does not access VRAM for display)
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, bit11~8)
Vertical mosaic size (MZSZV, 180022H, bit15~12)

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

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

Coordinate increment (N0ZMx, 180078H to 18007EH)

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

Reduction enable (N0ZMQT, N0ZMHF, 180098H, bit1~0)

00: Horizontal reduction is not possible
01: Can be reduced to 1/2 horizontally
10: Can be reduced to 1/4 horizontally
11: Can be reduced to 1/4 horizontally

Line scroll interval (N0LSS, 18009AH, bit5~4)

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

Line zoom enable (N0LZMX, 18009AH, bit3)

0: Do not scale
1: Scale horizontally by line

Line scroll enable/for vertical direction (N0LSCY, 18009AH, bit2)

0: do not scroll
1: Scroll vertically by line

Line scroll enable/horizontal direction (N0LSCX, 18009AH, bit1)

0: do not scroll
1: Scroll horizontally by line

Vertical cell scroll enable (N0VCSC, 18009AH, bit0)

0: Do not scroll vertical cells
1: Scroll vertical cells

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

Vertical cell scroll table address (VCSTA, 18009CH, bit2 to 18009EH, bit1)

●Cell format (NBG0)

Character size (N0CHSZ, 180028H, bit0)

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

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

Special priority (N0SPR, 180030H, bit9)

(For pattern name auxiliary data)

Special color calculation (N0SCC, 180030H, bit8)

(For pattern name auxiliary data)

Auxiliary pallet number (N0SPLT, 180030H, bit7~5)

(For pattern name auxiliary data)

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

(For pattern name auxiliary data)

Plane size (N0PLSZ, 18003AH, bit1~0)

00: 1 page horizontally x 1 page vertically
01: 2 pages horizontally x 1 page vertically
10: 2 pages horizontally x 2 pages vertically

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 plane C (N0MPC, 180042H, bit5~0)
For plane D (N0MPD, 180042H, bit13~8)

●Bitmap format (NBG0)

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

00: 512 dots horizontally x 256 dots vertically
01: 512 dots horizontally x 512 dots vertically
10: 1024 dots horizontally x 256 dots vertically
11: 1024 dots horizontally x 512 dots vertically

Special priority (N0BMPR, 18002CH, bit5)

Special color calculation (N0BMCC, 18002CH, bit4)

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

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

●Normal scroll screen (NBG1)

Transparent display enable (N1TPON, 180020H, bit9)

0: Enable transparent code (transparent code dots will be transparent)
1: Disable transparent code (transparent code dots are displayed according to their values)

Screen display enable (N1ON, 180020H, bit1)

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

Number of character colors (N1CHCN, 180028H, bit13~12)

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, bit11~8)
Vertical mosaic size (MZSZV, 180022H, bit15~12)

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

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

Coordinate increment (N1ZMx, 180088H to 18008EH)

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

Reduction enable (N1ZMQT, N1ZMHF, 180098H, bit9~8)

00: Horizontal reduction is not possible
01: Can be reduced to 1/2 horizontally
10: Can be reduced to 1/4 horizontally
11: Can be reduced to 1/4 horizontally

Line scroll interval (N1LSS, 18009AH, bit13~12)

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

Line zoom enable (N1LZMX, 18009AH, bit11)

0: Do not scale
1: Scale horizontally by line

Line scroll enable/for vertical direction (N1LSCY, 18009AH, bit10)

0: do not scroll
1: Scroll vertically by line

Line scroll enable/horizontal direction (N1LSCX, 18009AH, bit9)

0: do not scroll
1: Scroll horizontally by line

Vertical cell scroll enable (N1VCSC, 18009AH, bit8)

0: Do not scroll vertical cells
1: Scroll vertical cells

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

Vertical cell scroll table address (VCSTA, 18009CH, bit2 to 18009EH, bit1)

●Cell format (NBG1)

Character size (N1CHSZ, 180028H, bit8)

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

Pattern name data size (N1PNB, 180032H, bit15)

0: 2 words
1:1 word
↓

1 word (pattern name data size)

Character number auxiliary mode (N1CNSM, 180032H, bit14)

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

Special priority (N1SPR, 180032H, bit9)

(For pattern name auxiliary data)

Special color calculation (N1SCC, 180032H, bit8)

(For pattern name auxiliary data)

Auxiliary pallet number (N1SPLT, 180032H, bit7~5)

(For pattern name auxiliary data)

Auxiliary character number (N1SCN, 180032H, bit4~0)

(For pattern name auxiliary data)

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

00: 1 page horizontally x 1 page vertically
01: 2 pages horizontally x 1 page vertically
10: 2 pages horizontally x 2 pages vertically

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 plane C (N1MPC, 180042H, bit5~0)
For plane D (N1MPD, 180042H, bit13~8)

●Bitmap format (NBG1)

Bitmap size (N1BMSZ, 180028H, bit11~10)

00: 512 dots horizontally x 256 dots vertically
01: 512 dots horizontally x 512 dots vertically
10: 1024 dots horizontally x 256 dots vertically
11: 1024 dots horizontally x 512 dots vertically

Special priority (N1BMPR, 18002CH, bit3)

Special color calculation (N1BMCC, 18002CH, bit12)

Auxiliary pallet number (N1BMP, 18002CH, bit10~8)

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

●Normal scroll screen (NBG2)

Transparent display enable (N2TPON, 180020H, bit10)

0: Enable transparent code (transparent code dots will be transparent)
1: Disable transparent code (transparent code dots are displayed according to their values)

Screen display enable (N2ON, 180020H, bit2)

0: Cannot display (does not access VRAM for display)
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, bit11~8)
Vertical mosaic size (MZSZV, 180022H, bit15~12)

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 cell horizontal x 1 cell vertical
1: 2 cells horizontally x 2 cells vertically

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,
Reverse function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Reverse 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 pallet number (N2SPLT, 180034H, bit7~5)

(For pattern name auxiliary data)

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

(For pattern name auxiliary data)

Plane size (N2PLSZ, 18003AH, bit5~4)

00: 1 page horizontally x 1 page vertically
01: 2 pages horizontally x 1 page vertically
10: 2 pages horizontally x 2 pages vertically

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

Map (N2MPx, 180048H~18004AH)

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

●Normal scroll screen (NBG3)

Transparent display enable (N3TPON, 180020H, bit11)

0: Enable transparent code (transparent code dots will be transparent)
1: Disable transparent code (transparent code dots are displayed according to their values)

Screen display enable (N3ON, 180020H, bit3)

0: Cannot display (does not access VRAM for display)
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, bit11~8)
Vertical mosaic size (MZSZV, 180022H, bit15~12)

Screen scroll value (N3SCx, 180094H to 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 cell horizontal x 1 cell vertical
1: 2 cells horizontally x 2 cells vertically

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

Special priority (N3SPR, 180036H, bit9)

(For pattern name auxiliary data)

Special color calculation (N3SCC, 180036H, bit8)

(For pattern name auxiliary data)

Auxiliary pallet number (N3SPLT, 180036H, bit7~5)

(For pattern name auxiliary data)

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

(For pattern name auxiliary data)

Plane size (N3PLSZ, 18003AH, bit7~6)

00: 1 page horizontally x 1 page vertically
01: 2 pages horizontally x 1 page vertically
10: 2 pages horizontally x 2 pages vertically

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 plane C (N3MPC, 18004EH, bit5~0)
For plane D (N3MPD, 18004EH, bit13~8)

●Rotating scroll screen (RBG0)

Transparent display enable (R0TPON, 180020H, bit12)

0: Enable transparent code (transparent code dots will be transparent)
1: Disable transparent code (transparent code dots are displayed according to their values)

Screen display enable (R0ON, 180020H, bit4)

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

Character color number (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, bit11~8)
Vertical mosaic size (MZSZV, 180022H, bit15~12)

Rotation data bank specification (RDBSxx,18000EH)

For VRAM-A0 (or VRAM-A) (RDBSA0,18000EH, bit1~0)
For VRAM-A1 (RDBSA1,18000EH, bit3~2)
For VRAM-B0 (or VRAM-B) (RDBSB0,18000EH, bit5~4)
For VRAM-B1 (RDBSB1,18000EH, bit7~6)
- 00: Not used as RAM for RBG0
- 01: RAM for RBG0 coefficient data table
- 10: RAM for RBG0 pattern name table
- 11: RAM for RBG0 character pattern table
  (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 load
- 1: Read the specified parameters at 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 Switch between image A and image B using the coefficient table read from the coefficient table of rotation parameter A.
11: Mode 3: Switch between A and B images using the 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 line color screen data in coefficient data
- 1: Use

Coefficient data mode (RxKMD, 1800B4H)

For rotation parameter A (RAKMD, 1800B4H, bit3~2)
For rotation parameter B (RAKMD, 1800B4H, bit11~10)
- 00: Mode 0: Use as scaling factor kx,ky
- 01: Mode 1: Use as scaling factor kx
- 10: Mode 2: Use as scaling factor ky
- 11: Mode 3: Use as viewpoint coordinates Xp after rotation transformation

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 enable (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 cell horizontal x 1 cell vertical
1: 2 cells horizontally x 2 cells vertically

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

Special priority (R0SPR, 180038H, bit9)

(For pattern name auxiliary data)

Special color calculation (R0SCC, 180038H, bit8)

(For pattern name auxiliary data)

Auxiliary pallet number (R0SPLT, 180038H, bit7~5)

(For pattern name auxiliary data)

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

(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 horizontally x 256 dots vertically
1: 512 dots horizontally x 512 dots vertically

Special priority (R0BMPR, 18002EH, bit5)

Special color calculation (N0BMCC, 18002EH, bit4)

Auxiliary pallet 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)

Plane size (RAPLSZ, 18003AH, bit9~8)

00: 1 page horizontally x 1 page vertically
01: 2 pages horizontally x 1 page vertically
10: 2 pages horizontally x 2 pages vertically

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

00: Repeats the image set in the display area outside the display area
01: Repeats the character pattern set in the screen over pattern name register outside the display area
10: Make everything outside the display area transparent
11: Force display area to 0≦X regardless of plane size or bitmap size＜ 512, 0≦Y＜ 512 to make everything outside that area transparent.

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

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

Map (RAMPx, 180050H to 18005EH)

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

●For rotation parameter B (RBG0)

Plane size (RBPLSZ, 18003AH, bit13~12)

00: 1 page horizontally x 1 page vertically
01: 2 pages horizontally x 1 page vertically
10: 2 pages horizontally x 2 pages vertically

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

00: Repeats the image set in the display area outside the display area
01: Repeats the character pattern set in the screen over pattern name register outside the display area
10: Make everything outside the display area transparent
11: Force display area to 0≦X regardless of plane size or bitmap size＜ 512, 0≦Y＜ 512 to make everything outside that area transparent.

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

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

●Rotating scroll screen (RBG1)

Transparent display enable (R1TPON, 180020H, bit8)

0: Enable transparent code (transparent code dots will be transparent)
1: Disable transparent code (transparent code dots are displayed according to their values)

Screen display enable (R1ON, 180020H, bit5)

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

Character color number (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, bit11~8)
Vertical mosaic size (MZSZV, 180022H, bit15~12)

●Cell format (RBG1)

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

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

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,
Reverse function can be specified for each character
1: The character number in the pattern name data is 12 bits long,
Reverse 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, bit4~0)

(For pattern name auxiliary data)

Use rotation parameter B → Reference: For rotation parameter B

●For rotation parameter B (RBG1)

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

00: 1 page horizontally x 1 page vertically
01: 2 pages horizontally x 1 page vertically
10: 2 pages horizontally x 2 pages vertically

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

00: Repeats the image set in the display area outside the display area
01: Repeats the character pattern set in the screen over pattern name register outside the display area
10: Make everything outside the display area transparent
11: Force display area to 0≦X regardless of plain size or bitmap size＜ 512, 0≦Y＜ 512 to make everything outside that area transparent.

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

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

●Line color screen (LNCL)

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

0: Single color
1: Specify for each line

●Back screen (BACK)

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

0: 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 coordinate) (WxxX, 1800C0H to 1800CCH)

W0 starting point coordinates (W0SX, 1800C0H, bit9~0)
W0 end point coordinates (W0EX, 1800C4H, bit9~0)
W1 starting point coordinates (W1SX, 1800C8H, bit9~0)
W1 end point coordinates (W1EX, 1800CCH, bit9~0)

Window position (vertical coordinate) (WxxY, 1800C2H ~ 1800CEH)

W0 starting point coordinates (W0SY, 1800C2H, bit9~0)
W0 end point coordinates (W0EY, 1800C6H, bit9~0)
W1 starting point coordinates (W1SY, 1800CAH, bit9~0)
W1 end point coordinates (W1EY, 1800CEH, bit9~0)

●Normal line window

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

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

Line window table address (WxLWTA, 1800D8H ~ 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 for EXBG) of the 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 the transparent processing window (R0LOG, 1800D4H, bit7)
For sprites in the transparent processing window (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 window (SPW0E, 1800D4H, bit9)
For rotation parameter window (RPW0E, 1800D6H, bit1)
For color calculation window (CCW0E, 1800D6H, bit9)
- 0: Do not use W0 window
- 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 the 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 window (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 for EXBG) of the transparent processing window (N1SWE, 1800D0H, bit13)
For NBG2 of transparent processing window (N2SWE, 1800D2H, bit5)
Transparent processing window for NBG3 (N3SWE, 1800D2H, bit13)
For RBG0 of transparent processing window (R0SWE, 1800D4H, bit5)
For sprites in transparent processing window (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 the 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 window (SPW0A, 1800D4H, bit8)
For rotation parameter window (RPW0A, 1800D6H, bit0)
For color calculation window (CCW0A, 1800D6H, bit8)
- 0: Enable inside W0 window
- 1: Enable outside 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 the 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 window (SPW1A, 1800D4H, bit10)
For rotation parameter window (RPW1A, 1800D6H, bit2)
For color calculation window (CCW1A, 1800D6H, bit10)
- 0: Enable inside W1 window
- 1: Enable outside 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 for EXBG) of the 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 window (SPSWA, 1800D4H, bit12)
For rotation parameter window (RPSWA, 1800D6H, bit4)
For color calculation window (CCSWA, 1800D6H, bit12)
- 0: Enable inside SW window
- 1: Enable outside SW window

●Sprite

Sprite color calculation conditions (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 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 sprite) (SxPRIN, 1800F0H to 1800F6H)

Sprite register 0 (S0PRIN, 1800F0H, bit2~0)
Sprite register 1 (S1PRIN, 1800F0H, bit10~8)
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, bit4~0)
Sprite register 1 (S1CCRT, 180100H, bit12~8)
Sprite register 2 (S2CCRT, 180102H, bit4~0)
Sprite register 3 (S3CCRT, 180102H, bit12~8)
Sprite register 4 (S4CCRT, 180104H, bit4~0)
Sprite register 5 (S5CCRT, 180104H, bit12~8)
Sprite register 6 (S6CCRT, 180106H, bit4~0)
Sprite register 7 (S7CCRT, 180106H, bit12~8)

●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, bit7~0)
For special function code B (SFCDBx, 180026H, bit15~8)
- 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 enable (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 a line screen when the supported screen becomes the top image
- 1: Insert 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: The least significant bit of the number is specified 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 calculation enable (BOKEN, 1800ECH, bit15)

0: Do not use blur calculation function
1: Use

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

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

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

0: Do not use 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: Specify the color calculation ratio 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 is

Color calculation enable (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 calculations
- 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 calculation enable is specified by the most significant bit of 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 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 color offset A value
- 1: Use color offset B value

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

For RED data of color offset A (COARD, 180114H, bit8~0)
For GREEN data of color offset A (COAGR, 180116H, bit8~0)
For BLUE data of 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 of 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 shadow function (do not add shadow)
- 1: Use (add shadow)

Transparent shadow select (TPSDSL, 1800E2H, bit8)

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

▲ Back ｜ Forward ▼

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

■15.3 Bit configuration diagram

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