Graphic1 (G1) Mode - Yamaha V9938 Programmer's Manual

3.4. GRAPHIC1 (G1) mode

Characteristics
Pattern size (w*h)
Patterns
Screen size (w*h)
Pattern colors
Sprite mode
VRAM area per screen
Controls
Pattern font
Screen pattern location
Pattern color codes 1 & 0
Background color code
Sprites
Mode flags
Bit
Value
MSX system default values
BASIC SCREEN
number
1 00000h ...
© 1985 ASCII CORP. / NIPPON GAKKI CO.
8 dots * 8 dots
256 types
32 * 24 patterns (256 * 192 pixels)
16 colors out of 512 (per screen)
Sprite mode 1
4K bytes
VRAM pattern generator table
VRAM pattern name table
Specified as a group for each 8-bit pattern in color table
Low-order four bits of R#7
VRAM sprite attribute table
VRAM sprite pattern table
M5 (R#0)
0
Pattern Pattern
generator layout
01800h ...
017FFh 01AFFh
M4 (R#0) M3 (R#0)
0 0
Pattern
colors
02000h ...
0201Fh
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M2 (R#1) M1 (R#1)
0
Sprite patterns
attributes
03800h ... 01B00 ...
03FFFh
© 2010-2015 Eugeny Brychkov
0
Sprite
01B7Fh