Citizen CBM-230/231 User Manual page 36

(7) Defining Download Character (ESC & s n m a (D1D2 -Dn)
Code: [1B]h + [26]h + s +n +m +a +Dn
* {s = 02}
{20 (Hex) n 7E (Hex)}
{20 (Hex) m 7E (Hex)}
{0 < a < 0A (Hex)}
Defines the font of download characters of alphanumeric characters.
l "s" indicates the number of bytes in vertical direction.
l "n" indicates the start character code and "m" indicates the end character code. To define only one
character, set n = m.
l Character codes definable includes 95 ASCII codes in total between <20>H-<7E>H.
l "a" indicates the number of dots in horizontal direction for definition.
l Dn is the data to be defined, which indicate a pattern equal to "a" dot in horizontal
direction from the left end. The rest of the pattern on the right side is filled with space.
l Download characters thus defined remain valid until redefinition, ESC @ execution,
GS * execution, or power OFF is practiced.
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CBM-230/231 User's Manual