User Manuals: Yamaha V9938 Video Controller

Manuals and User Guides for Yamaha V9938 Video Controller. We have 1 Yamaha V9938 Video Controller manual available for free PDF download: Programmer's Manual

Yamaha V9938 Programmer's Manual

Yamaha V9938 Programmer's Manual (108 pages)

MSX-VIDEO

Brand: Yamaha | Category: Control Unit | Size: 2 MB

Table of Contents

Screen Modes 2
5
Table of Contents
7
Definitions

9
1 Basic Input and Output

13
2 Register Functions

17
- Control Registers
  17
  - Mode Registers
    17
  - Table Base Address Registers
    18
  - Color Registers
    19
  - Display Registers
    20
  - Access Registers
    21
  - Command Registers
    22
- Status Registers #0 to #9
  23
3 Screen Modes

25
- TEXT1 Mode
  25
- TEXT2 Mode
  29
- MULTICOLOR (MC) Mode
  34
- GRAPHIC1 (G1) Mode
  38
- GRAPHIC2 (G2) and GRAPHIC3 (G3) Modes
  42
- GRAPHIC4 (G4) Mode
  47
- GRAPHIC5 (G5) Mode
  50
- GRAPHIC6 (G6) Mode
  55
- GRAPHIC7 (G7) Mode
  59
4 Commands

63
- Types of Commands
  63
- Page Concept
  64
- Logical Operations
  65
- Explanations of Commands
  66
  - HMMC (High-Speed Move CPU to VRAM)
    66
  - YMMM (High Speed Move VRAM to VRAM, y Only)
    69
  - HMMM (High Speed Move VRAM to VRAM)
    71
  - HMMV (High-Speed Move VDP to VRAM)
    73
  - LMMC (Logical Move CPU to VRAM)
    75
  - LMCM (Logical Move VRAM to CPU)
    78
  - LMMM (Logical Move VRAM to VRAM)
    81
  - LMMV (Logical Move VDP to VRAM)
    83
  - Line
    85
  - Srch
    87
  - Pset
    90
  - Point
    92
- Speeding up the Processing of Commands
  93
- States of the Registers after Command Execution
  94
5 Sprites

95
6 Special Functions

108

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