7220 datasheet(106/303 Pages) RENESAS

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2-79

7220 Group User’s Manual

FUNCTIONAL DESCRIPTION

2.11 CRT display function

Left side 8 dots

1000016 to 1000F16

1001016 to 1001F16

1002016 to 1002F16

1003016 to 1003F16

107E016 to 107EF16

107F016 to 107EF16

1100016 to 1100F16

1101016 to 1101F16

117D016 to 117DF16

117E016 to 117EF16

117F016 to 117EF16

Right 4 side 8 dots

1080016 to 1080F16

1081016 to 1081F16

1082016 to 1082F16

1083016 to 1083F16

10FE016 to 10FEF16

10FF016 to 10FFF16

1180016 to 1180F16

1181016 to 1181F16

11FD016 to 11FDF16

11FE016 to 11FEF16

11FF016 to 11FFF16

The character code used to specify a display character is determined based on the address in the

CRT display ROM in which that character data is stored.

Assume that 1 character data is stored in addresses 10XX016 to 10XXF16 (XX denotes “0016” to “7F16”)

and 10YY016 to 10YYF16 (YY denotes “XX + 80016”), then the character code is “XX 16

.”

In other words, a character code is constructed with the low-order second and third digits (hexadecimal

notation) of the 5-digit address (1000016 to 107FF16) where that character data is stored.

A character code is “YY16” in addresses 1100016 to 11FFF16.

Table 2.11.3 shows the character code table.

Table 2.11.3 Character code table (be omitted partly)

Character data stored address

Character code

0016

0116

0216

0316

7E16

7F16

8016

8116

FD16

FE16

FF16

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