M69030 Asiliant Technologies, M69030 Datasheet - Page 358

• Manufacturer Part Number: M69030
• Manufacturer: Asiliant Technologies

Specifications of M69030

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Rad Hardened: No
• Lead Free Status / Rohs Status: Supplier Unconfirmed

D-6
64x64x2bpp 4-Color Mode
This mode provides four colors for drawing the cursor. There is no provision for transparency in the 64x64
pixel space occupied by the cursor so unless the image behind the cursor happens to be the same color as
one of the four colors used to draw the cursor, the cursor will appear to be a 64 x 64 pixel square. Each
pixel position within the cursor is defined by the combination of two bits, each of which is stored in planes
referred to as plane 0 and plane 1.
In this mode, it is possible to have up to 4 different 1KB patterns stored in a 4KB memory space starting at
the base address specified in the low and high base address registers for the given cursor.
The following tables show how the cursor data is organized in memory and the meaning of the two bits for
each pixel position.
Table D-4:
Table D-5:
`efmp

69030 Databook
Memory Organization 64x64x2bpp 4-Color Mode
Pixel Data 64x64x2bpp 4-Color Mode
Pixel Data
Plane 0
0
0
1
1
Pixel Data
Plane 1
Offset
FFCh
00Ch
3FCh
3F0h
3F4h
3F8h
FF8h
000h
004h
008h
010h
014h
400h
404h
0
1
0
1
Hardware Cursor and Pop Up Window
...
...
Cursor color 0
Cursor color 1
Cursor color 2
Cursor color 3
Color Displayed at the Corresponding Pixel Position
Plane
...
...
0
0
1
1
0
0
0
0
1
1
0
0
1
1
31-0 on line 0 of pattern 0
63-32 on line 0 of pattern 0
31-0 on line 0 of pattern 0
63-32 on line 0 of pattern 0
31-0 on line 1 of pattern 0
63-32 on line 1 of pattern 0
...
31-0 on line 63 of pattern 0
63-32 on line 63 of pattern 0
31-0 on line 63 of pattern 0
63-32 on line 63 of pattern 0
31-0 on line 0 of pattern 1
63-32 on line 0 of pattern 1
...
31-0 on line 63 of pattern 3
63-32 on line 63 of pattern 3
Pixels
Revision 1.3 11/24/99