Micronas SDA 6000, User Manual

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SDA 6000
PRELIMINARY DATA SHEET
Version 2.1
Display Generator
10 - 35 Micronas
Transfer Parameters
These instructions are immediately executed by the GA.
• CUR (opcode = 0000) - set clipping coordinates
• CBR (opcode = 0001) - set clipping coordinates
• SDR (opcode = 0010) - set source descriptor for data transfer
• DDR (opcode = 0011) - set destination descriptor for data transfer
• TSR (opcode = 0100) - set definitions for source memory area
• TDR (opcode = 0101) - set definitions for destination memory area
• TOR (opcode = 0110) - set offset definitions for transferred area
• TAR (opcode = 0111) - set attributes for transfer
10.7.1 Screen Attributes (SAR)
This instruction controls different screen attributes.
SAR
Bit Function
SBTL Screen Background Transparency under Layer Area
Defines whether the screen background area is transparent under a
layer 1 (2) area or not.
0:
The screen background within a layer area is not transparent.
Under transparent layer pixels the background colour can be seen.
1: The screen background within a layer area is transparent. Under
transparent layer pixels the video can be seen.
Note: Transparency definitions for the screen background outside a
layer area are made with bits STR. Also please refer to
Chapter 10.3.3 .
DMODE
(3 … 0) Display Mode Bits
Defines the possible combinations of both layers with the available pixel
formats. Please see table ‘Display Modes’ below.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
STR(1..0) GREEN(3..0) BLUE(3..0)
DDW
DDH RED(3..0)
1 - - - - - -
SB
TL
DMODE(3..0)
1
1 1 -