PEDL9044-03
1
Semiconductor
ML9044-xxA/xxB
Character Generator ROM (CGROM)
The CGROM generates small character patterns (5 × 7 dots, 160 patterns) or large character patterns (5 × 10 dots,
32 patterns) from the 8-bit character code signals in the DDRAM.
When the 8-bit character code corresponding to a character pattern in the CGROM is written in the DDRAM, the
character pattern is displayed in the display position specified by the DDRAM address.
Character codes 20 to 7F and A0 to FF are contained in the character code area in the CG ROM.
Character codes 20 to 7F and A0 to DF are contained in the character code area for the 5 × 7-dot character patterns.
Character codes E0 to FF are contained in the ROM area for 5 × 10-dot character patterns.
The general character generator ROM codes are 51A/51B.
The relationship between character codes and general purpose character patterns are indicated in Table2.
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