M69000 Asiliant Technologies, M69000 Datasheet - Page 290

• Manufacturer Part Number: M69000
• Manufacturer: Asiliant Technologies

Specifications of M69000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

BR04
read/write at memory space offset 0x400010h
word or doubleword accessible
31
30-23
22-20
19
18
&+,36
Tran
Stat
Sel
BB
(0)
(0)
31
15
Tran
BitBLT Engine Status
Reserved
Pattern Vertical Alignment
Solid Pattern Select
Pattern Color Depth
Enl
(0)
14
30
69000 Databook
Mask
BitBLT Control Register
Src
(0)
13
29
Note: This bit is read-only -- writes to this bit are ignored.
0: Indicates that the BitBLT engine is idle.
1: Indicates that the BitBLT engine is busy.
These bits always return 0 when read.
Specifies which scanline’s worth (i.e., which 1 of the 8 horizontal rows) of the 8x8 pattern
data will appear in the first scanline’s worth of the destination output data. Depending on
the location of the destination, the upper left corner of the upper left tile of the pattern data
is usually aligned with the upper left corner of the destination output data as the pattern data
is tiled into the destination. The BitBLT engine determines the horizontal alignment of the
leftmost tiles of pattern data relative to the destination using the lower order bits of the
destination address specified in BR07. However, the vertical alignment relative to the
destination must be specified using these 3 bits.
Note: This bit applies only when the pattern data is monochrome (determined by bit 18 of
this register).
0: Causes monochrome pattern data to actually be read and used as is normal, if indeed
monochrome pattern data is being used as an input to a BitBLT operation.
1: Causes the BitBLT engine to forgo the process of reading the pattern data. Instead, the
presumption is made that all of the bits of the pattern data are set to 0. The pattern operand
for all bit-wise operations is forced to the background color specified in BR01.
0: Specifies that the pattern data is in color and therefore can have a color depth of 8, 16,
or 24 bits per pixel.
1: Specifies that the pattern data is monochrome and therefore has a color depth of 1 bit
per pixel.
Dep
Src
12
(0)
28
(000:0000:0)
Rsvd
(0)
27
11
Reserved
Src
Sel
(0)
26
10
Subject to Change Without Notice
Point Select
25
9
Starting
BitBLT Registers
(00)
24
8
23
7
22
6
Pattern Vertical
Alignment
(000)
21
5
Bit-Wise Operation
20
4
Select
(00h)
Sol
Pat
(0)
19
3
Revision 1.3 8/31/98
Dep
Pat
(0)
18
2
Mask
Pat
(0)
17
1
Tran
Sel
17-7
(0)
16
0