This encompasses the character sets Printing-ASCII, Japanese-JISX0201, and Japanese-JISX0208-Kana (half-width katakana, the right half of JISX0201). It uses 8-bit bytes.
Note that Printing-ASCII and Japanese-JISX0201-Kana are 94-character charsets, while Japanese-JISX0208 is a 94x94-character charset.
The encoding is as follows:
Character set Representation (PC=position-code) ------------- -------------- Printing-ASCII PC1 Japanese-JISX0201-Kana 0x8E | PC1 + 0x80 Japanese-JISX0208 PC1 + 0x80 | PC2 + 0x80 Japanese-JISX0212 PC1 + 0x80 | PC2 + 0x80