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Horizontal Pel Panning Register Format
Bit
7
6
5
4
3
2
1
0
I I I II ' - ---' - - I
--1--1
~:
Horizontal Pel Panning
Not Used
Bit O-Bit 3
Horizontal Pel Panning-This 4 bit register
selects the number of picture elements (pels) to
shift the video data horizontally to the left. Pel
panning is available in both A/N and AP A
modes. In Monochrome A/N mode, the image
can be shifted a maximum of 9 pels. In all other
A/N and AP A modes, the image can be shifted a
maximum of 8 pels. The sequence for shifting
the image is given below:
9 pels/character: 8, 0, 1, 2, 3, 4, 5, 6, 7
(Monochrome A/N mode only)
8 pels/character: 0, 1,2,3,4,5,6,7 (All other
Modes)
IBM Enhanced Graphics Adapter 61
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