MB86293 Datasheet, PDF (80/285 Pages) Fujitsu Component Limited. – Grraphiics Conttrrollllerr Speciiffiicattiions

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
8.3 B i t M a p P r o c e s s i n g
8.3.1 BLT
A rectangular shape in pixel units can be transferred. There are following types of transfer:
1. Transfer from host CPU to Drawing frame memory
2. Transfer between Graphics Memories including Drawing frame
Concerning 1 and 2 above, 2-term logic operation is performed between source and destination data and
its result can be stored.
Setting a transparent color enables a drawing of a specific pixel with transmission.
If part of the source and destination of the BLT field are physically overlapped in the display frame, the
start address (from which vertex the BLT field to be transferred) must be set correctly.
8.3.2 Pattern data format
CORAL can handle three bit map data formats: indirect color mode (8 bits/pixel), direct color mode (16
bits/pixel), and binary bit map (1 bit/pixel).
The binary bit map is used for character/font patterns, where foreground color is used for bitmap = 1 pixel,
and background color (background color can be set to be transparent by setting) is applied for bitmap = 0
pixels.
MB86293 CORAL_LQ
Graphics Controller
80
Specifications Rev. 1.1