NCR RealPOS 72XRT POS, User Manual

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2x20 Customer Display Interface 9-131
Character Tables and Codes
Data is written to the display one byte at a time. If the byte received is greater than 1Fh it
is considered as 5x8 dot matrix character data. This character is written to the current
cursor position and the cursor position is then incremented by one. When data is
written to the last character position of the top line the cursor position moves to the first
position of the bottom line. When data is written to the last character position of the
bottom line the cursor position moves to the first position of the top line.