Cirrus Logic EP93 Series User Manual page 302

Graphics Accelerator
EP93xx User's Guide
8
8-38
If BG = '1' in the BLOCKCTRL
fill from the BACKGROUND
BLOCKCTRL register, a '0' is transparent.
When drawing solid lines, write LINEPATTERN =
0x000F_FFFF.
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register, a '0' causes a pixel
register. If BG = '0' in the
DS785UM1