NCR RealPOS 70 - Character Table Select (09 H, TABLE CODE); Clear Display (12 H); Luminance Control (11 H, LUMINANCE)

Chapter 10: 2x20 Customer Display Interface 10-3
Character Table Select (09h, TABLE CODE)
Thiscommandselectswhichcharactertabletodisplay.TheTABLE
CODEbytedeterminesthecharactersetasdefinedinthetablebelow.
Ifbits0to3areallzerothenthiscommandisignored.Whenanew
charactertableisselectedallcharactersonthedisplaywillbeupdated
to
displaythecharacterofthenewtable.Afteraresetthecharacter
tableissettoTable1.
Table Code Character Table
01h Table1
02h Table2
03h Table3
04h Table4
Clear Display (12h)
Thiscommandsetsall40charactersto 20h (space)andmovesthe
cursortothefirstpositionofthetopline.
Luminance Control (11h, LUMINANCE)
Thiscommandselectsthedisplayluminance.TheLUMINANCEbyte
setsthedisplayluminancelevelasdefinedinthetablebelow.This
commandisignorediftheLUMINANCEbyteis00h.
LUMINANCE Display Luminance
01h 25%
02h 50%
03h 75%
04h 100%