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1 . 3
Concepts
1 . 3 . 1
Simplicity (Optimization of System Configuration)
Use of Unified Graphics Memory Architecture
• Unified handling of image data (unified graphics memory (UGM) architecture)
Data in various formats can be stored and managed in the same unified graphics memory (figure
1-3).
• Minimum necessary UGM
Minimum UGM configuration: One 16-bit-data-bus type 4-Mbit EDO page mode DRAM
Monochrome
(binary source)
Color
(multi-valued source area)
Monochrome pattern
(binary work area)
Figure 1-3
Reduced System Size Through Use of UGM Architecture
• Unified system bus interface
A CPU interface circuit is incorporated to provide a unified interface. This enables unified
graphics memory to be allocated in the SuperH's memory space without regard to the type of
SuperH used. (See figure 1-4.)
4
Minimum configuration:
4M × 16-bit EDO-DRAM
POLYGON...
Display list (16-bit instructions)
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