Epson Research and Development Page 19
Vancouver Design Center
Programming Notes and Examples S1D13504
Issue Date: 01/02/01 X19A-G-002-07
4 bpp Color
In 4 bpp color mode, the LUT is limited to a single 16 entry bank per color. The LUT bank select
bits have no effect in this mode.
The following table is a recommended set of data values to simulate the 16 colors in a VGA. The
second recommendation for this mode is to program the register values to data values equalling th e
register number. (i.e. R[0] = 0, G[0]=0, B[0]=0, R[1]=1 ... R[F]=0Fh ...)
8 bpp Color
In 8 bpp color mode, pixel bits [7:5] represent the red LUT index, bits [4:2] represent the green LUT
index, and bits [1:0] represent the blue LUT index. It is recommended that the three LUTs are
programmed according to the following format:
Table 3-10: Recommended LUT Values to Simulate VGA Default 16 Color Palette
Address Red Green Blue Address Red Green Blue
00 00 00 00 08 00 00 00
01 00 00 0A 09 00 00 0F
02 00 0A 00 0A 00 0F 00
03 00 0A 0A 0B 00 0F 0F
04 0A 00 00 0C 0F 00 00
05 0A 00 0A 0D 0F 00 0F
06 0A 0 A 00 0E 0F 0F 00
07 0A 0A 0A 0F 0F 0F 0F
Table 3-11: Recommended LUT Values For 8 bpp Color Mode
Address R ed Green Blue
00 00 00 00
01 03 03 05
02 05 05 0A
03 07 07 0F
04 09 09 bank 1
05 0B 0B bank 1
06 0D 0D bank 1
07 0F 0F bank 1