NCR RealPOS 70, Руководство пользователя

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11-8 Chapter 11: APA Customer Display Interface
Set X Address Register (03h, XAR)
This command sets the XAR. Bits 2 through 0 of the XAR byte are used,
bits 7 through 3 are ignored.
Set Display Control Bits (04h, DCB)
This command sets the display control bits. Bits 5 through 0 of the DCB
byte are used, bits 7 and 6 are ignored.
DCB Byte
B7 B6 B5 B4 B3 B2 B1 B0
x x I/D G P1 P0 D H
Write Data Byte (05H, DATA)
This command writes the DATA byte, using the current data write
mode, into the DDRAM location addressed by the XAR, the YAR, the
P1 and P0 bits, and the H bit. This command also automatically
increments (I/D=0) or decrements (I/D=1) the X and Y address registers.
When the YAR overflows from 127 to 0, the XAR is also incremented,
when the YAR underflows from 0 to 127, the XAR is also decremented.
Write Data Page (06h, BYTE1, BUTE2,... BYTE1024)
This command writes BYTE1 through BYTE1024, using the current
data write mode, into the DDRAM page addressed by the P1 and P0
bits, and the H bit. This command ignores the XAR, the YAR, and the
I/D bit and stores BYTE1 at (XAR,YAR) location (0,0), BYTE2 at (0,1),...
BYTE129 at (1,0),... and BYTE1024 at (7,127). This command also clears
the XAR and the YAR.