Bit Map Processing; Blt; Pattern Data Format - Fujitsu MB86R02 Jade-D Hardware Manual

Graphics controller

Hide thumbs Also See for MB86R02 Jade-D:

Table of Contents

MB86R02 'Jade-D' Hardware Manual V1.64

Bit Map Processing

A rectangular shape in pixel units can be transferred. There are following types of transfer:

Transfer from host CPU to Drawing frame memory

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.

MB86R02 'Jade-D' 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.