Screen Modes; Text1 Mode - Yamaha V9938 Programmer's Manual

3.1. TEXT1 mode

Characteristics
Pattern size (w*h)
Patterns
Screen size (w*h)
Pattern colors
VRAM area per screen
Controls
Pattern font
Screen pattern location
Pattern color code 1
Pattern color code 0
Background color code
Mode flags
Bit
Value
MSX system default values
BASIC SCREEN number
0, width 1 ... 40
© 1985 ASCII CORP. / NIPPON GAKKI CO.

3. SCREEN MODES

6 dots * 8 dots
256 types
40 * 24 patterns
Two colors out of 512 (per screen)
4K bytes
VRAM pattern generator table
VRAM pattern name table
High-order four bits of R#7
Low-order four bits of R#7
Low-order four bits of R#7
M5 (R#0) M4 (R#0)
0 0
Pattern generator
00800h ... 00FFFh
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M3 (R#0) M2 (R#1)
0 0
Pattern layout
00000h ... 003BFh
© 2010-2015 Eugeny Brychkov
M1 (R#1)
1