Apple II character set

Apple II text mode uses the 7-bit ASCII (us-ascii) character set. The high-bit is set to display in normal mode on the 40x24 text screen.

Character sets

Apple II / Apple II plus

The original Signetics 2513 character generator chip has 64 glyphs for upper case, numbers, symbols, and punctuation characters. Each 5x7 pixel bitmap matrix is displayed in a 7x8 character cell on the text screen. The 64 characters can be displayed in INVERSE in the range $00 to $3F, FLASHing in the range $40 to $7F, and NORMAL mode in the range $80 to $FF. Normal mode characters are repeated in the $80 to $FF range.

To display lowercase letters, applications can run in the graphics modes and use custom fonts, rather than running in text mode using the font in ROM.

Apple //e and //c (MouseText mode)

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Apple IIGS

Two characters in the Apple II MouseText character set was updated for the GS. The characters unique to MouseText are encoded in Unicode's Symbols for Legacy Computing block.^[1][2]

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References

External links

• Typography in 8 bits: System fonts
• Video ROMs

This page was last edited on 19 March 2024, at 02:50