NCR RealPOS 70 - Command Codes (00 H - 0 Fh); Reset (00 H); Set Luminance (01 H, LUMINANCE); Set y Address Register (02 H, YAR)

Chapter 11: APA Customer Display Interface 11-7
Command Codes (00h - 0Fh)
Reset (00h)
Thiscommandresetsthemoduletothefollowingconditions:
• 0%luminanceXARandYARsetto0
• EntireDDRAMcleared
• Alldisplaycontrolbitssetto0
• Datawritemodesettodefaultmode(overwrite)
• Charactersizesetto5x7
• Characterluminancesetto100%

Set Luminance (01h, LUMINANCE)
Thiscommandsetstheoveralldisplayluminanceto1of64levels.Bits
5through0oftheLUMINANCEbyteselecttheluminancelevel,bits7
and6areignored.
LUMINANCE Byte Display Luminance
00h 0%
01h 1.5%
‐‐‐ ‐‐‐
3Eh 98.5%
3Fh 100%
Set Y Address Register (02h, YAR)
ThiscommandsetstheYAR.Bits6through0oftheYARbyteareused,
bit7isignored.