Table of Contents

Table

• Table 1.1 TV screen mode
• Table 1.2 Scroll screen
• Table 1.3 Window
• Table 1.4 Scroll screen functions

• Table 2.1 TV screen mode
• Table 2.2 External screen setting register
• Table 2.3 H counter register bit contents
• Table 2.4 V counter register bit contents

• Table 3.1 Data defined in VRAM
• Table 3.2 Number of pattern name table data accesses required during one cycle
• Table 3.3 Character pattern data (bitmap pattern data) read access count
• Table 3.4 Character pattern data read access restrictions
• Table 3.5 Access commands

• Table 4.1 Number of character colors and dot data size
• Table 4.2 Cell Data Structure
• Table 4.3 Transparent dot data values ​​
• Table 4.4 Pattern name table capacity and page boundary for one page
• Table 4.5 Character number assist mode
• Table 4.6 Bit configuration when the pattern name data is 1 word
• Table 4.7 Reverse function bit
• Table 4.8 Address value of map specification register by setting
• Table 4.9 Bitmap size
• Table 4.10 Bitmap Colors
• Table 4.11 Bitmap pattern capacity per page
• Table 4.12 Normal scroll screen display area
• Table 4.13 Display area of ​​rotating scroll screen

• Table 5.1 Horizontal coordinate increment and shrink settings
• Table 5.2 Restriction of display screen by setting the reduction enable bit

• Table 6.1 Rotating scroll screen
• Table 6.2 Rotation parameters
• Table 6.3 Address value indicated by the least significant bit of coefficient parameter data by coefficient data size
• Table 6.4 Image processing with the most significant bit value of coefficient data for RBG0

• Table 8.1 Bit contents of horizontal position window position register
• Table 8.2 Bit contents of vertical position window position register

• Table 9.1 Shared bit
• Table 9.2 Selection of sprite priority number register
• Table 9.3 Selection of Sprite Color Calculation Ratio Register

• Table 11.1 Priorities when priority numbers are equal
• Table 11.2 Special priority functions by mode

• Table 12.1 Color calculation function in high resolution mode or dedicated monitor mode
• Table 12.2 Extended color calculation ratio
• Table 12.3 Special color operation modes

• Table 15.1 Registers related to data defined in VRAM

Figure

• Figure 1.1 System configuration
• Figure 1.2 Address map

• Figure 2.1 Display method with interlace settings
• Figure 2.2 TV screen configuration

• Figure 3.1 VRAM address map by capacity
• Figure 3.2 VRAM cycle pattern register
• Figure 3.3 Pattern Name Table Data Access Restriction
• Figure 3.4 Example of character pattern data read access specification
• Figure 3.5: Restricted access specification for vertical cell scroll table data
• Figure 3.6 Example of CPU read / write access specification when VRAM is not divided into two banks
• Figure 3.7 Example of CPU read / write access specification when dividing VRAM into 2 banks
• Figure 3.8 Example of VRAM cycle pattern specification
• Figure 3.9 Color data configuration on color RAM
• Figure 3.10 Color data of color RAM

• Figure 4.1 Scroll screen configuration in cell format
• Figure 4.2 Correspondence between cell format scroll screen configuration and data settings
• Figure 4.3 Bitmap scroll screen configuration
• Figure 4.4 Relationship between Bitmap Format Scroll Screen Configuration and Data Settings
• Figure 4.5 Cell data structure based on the number of character colors
• Figure 4.6 RGB format dot data
• Figure 4.7 Cell placement by character size
• Figure 4.8 Data structure of pattern name table
• Figure 4.9 Bit structure when pattern name data is 2 words
• Figure 4.10 Bit structure when pattern name data is 1 word
• Figure 4.11 Dot color data based on the number of character colors
• Figure 4.12 Inverted display of character pattern
• Figure 4.13 Layout of pattern name table by plain size
• Figure 4.14 Map Specification Register
• Figure 4.15 Map size
• Figure 4.16 Map plane placement with reduced settings
• Figure 4.17 Bitmap pattern configuration
• Figure 4.18 Dot color data based on the number of bitmap colors
• Figure 4.19 Mosaic pattern

• Figure 5.1 Configuration of screen scroll value bits
• Figure 5.2 Coordinate increment register configuration
• Figure 5.3 Line scroll function
• Figure 5.4 Bit configuration of line scroll table data
• Figure 5.5 Line scroll table example
• Figure 5.6 Vertical cell scrolling function
• Figure 5.7 Data structure on vertical cell scroll table
• Figure 5.8 Vertical cell scroll table example

• Figure 6.1 How to display the rotating scroll screen
• Figure 6.2 Rotation parameter data structure
• Figure 6.3 Rotation parameter table
• Figure 6.4 Rotation parameter table storage method in VRAM
• Figure 6.5 Rotation parameter switching
• Figure 6.6 Line color screen data using coefficient data
• Figure 6.7 Coefficient Table Data Bit Configuration

• Figure 7.1 Line screen
• Figure 7.2 Line color screen table configuration
• Figure 7.3 Bit configuration of line color screen table data
• Figure 7.4 Back screen table configuration
• Figure 7.5 Bit structure of back screen table data

• Figure 8.1 Normal rectangular window
• Figure 8.2 Normal line window
• Figure 8.3 Bit configuration of normal line window table data
• Figure 8.4 Configuration of normal line window table
• Figure 8.5 Sprite window
• Figure 8.6 Effective area of ​​window
• Figure 8.7 Window processing

• Figure 9.1 Sprite type
• Figure 9.2 Sprite data when palette format data and RGB format data coexist

• Figure 10.1 Sprite dot color data in palette format
• Figure 10.2 Sprite color RAM address
• Figure 10.3 Palette format scroll dot color data
• Figure 10.4 Scroll color RAM address
• Figure 10.5 Sprite dot color data in RGB format
• Figure 10.6 Scroll dot color data in RGB format
• Figure 10.7 Dot color code supporting special function codes

• Figure 11.1 Priority function
• Figure 11.2 Insert line color screen

• Figure 12.1 Color operation function
• Figure 12.2 Color calculation ratio mode
• Figure 12.3 Extended color calculation function
• Figure 12.4 Bokeh calculation function

• Figure 13.1 Color offset data

• Figure 14.1 Shadow function
• Figure 14.2 Writing normal shadow sprite data
• Figure 14.3 Normal Sprite Data
• Figure 14.4 Sprite shadow and transparent shadow
• Figure 14.5 MSB Shadow Sprite Data