Cirrus Logic EP93 Series User Manual page 295

ERROR:
INTEOI:
BG:
REMAP:
DS785UM1
Table 8-23. Pixel Mode Encoding
P2 P1 P0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Error Indicator - Read/Write
1 - Bus error has occurred
0 - No error.
Interrupt / End of Interrupt - Read/Write
Reading this bit returns the status of the Block Fill or Block
Copy function interrupt (active high):
'1' - Interrupt request. Indicates Block Fill or Block Copy
function has completed.
'0' - No interrupt request. Indicates Block Fill or Block
Copy function has not completed.
Writing '0' to this bit will clear the interrupt request; writing
'1' to this bit will generate an interrupt request.
This bit may be used to cancel a 'broken' graphics function
that never completes. Masking the interrupt by writing
INTEN = '0', and writing INTEOI = '1' will halt the current
Graphics Accelerator function.
Background - Read/Write
When this bit is '0' during remap (REMAP = '0'), source
image pixels that have a value of '0' are unaffected
(transparent) when they are copied to the destination
image.
When this bit is '1' during remap (REMAP = '1'), source
image pixels that have a value of '0' are copied to the
destination image with the color value in the BG field of the
BACKGROUND
Reading this bit returns a valid value only when EN = '1'.
Pixel Expansion Mapping Function Enable - Read/Write
The value of REMAP enables or disables the Pixel
Expansion Mapping Function:
Copyright 2007 Cirrus Logic
Pixel Mode
not defined
16 bits per pixel
not defined
24 bits per pixel packed
32 bits per pixel (24 bpp unpacked)
register.
Graphics Accelerator
EP93xx User's Guide
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