Eight Bit-Per-Pixel (256 Colors) - Epson S1D13704 Technical Manual

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3.1.4 Eight Bit-Per-Pixel (256 Colors)

Bit 7 Bit 6
Red bit 2 Red bit 1
Figure 3-4: Pixel Storage for 8 Bpp (256 Colors) in One Byte of Display Buffer
Programming Notes and Examples
Issue Date: 01/02/12
In eight bit-per-pixel mode one byte of display buffer represents one pixel on the display.
At this color depth the read-modify-write cycles, required by the lessor pixel depths, are
eliminated.
Each byte of display memory consists of three pointers into the Look-Up Table. The three
most significant bits form an index into the first eight red values. The next three bits are an
index into the first eight green values. The last two bits form an index into the first four blue
Look-Up Table entries.
Bit 5 Bit 4
Red bit 0 Green bit 2
Bit 3 Bit 2
Green bit 1 Green bit 0
*
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Bit 1 Bit 0
Blue bit 1 Blue bit 0
S1D13704
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