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DAVFU Line Slewing
Another method of moving paper using the DAVFU and PI line results in vertical slews of a
specified number of lines within the form, rather than slewing to a specific line. For this to oc
cur, two criteria must be met:
1)
PI line must be high
2)
Data bit 5 must be 1 (set)
If these criteria are met, a specific number of lines will be slewed based on the status of data bits
1-4 as shown in Table 5-4. With bit 5 set and the PI line high, this type of vertical paper motion
will occur whether the DAVFU memory is loaded or not.
NUMBER OF
LINES SLEWED
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
5-6
Table 5-4. DAVFU Vertical Paper Motion By Line Slewing
PI LINE
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
X = don't care (1 or 0)
BITS OF DATA BYTE
8
7
6
5
4
X
X
X
1
0
X
X
X
1
0
X
X
X
1
0
X
X
X
1
0
X
X
X
1
0
X
X
X
1
0
X
X
X
1
0
X
X
X
1
0
X
X
X
1
1
X
X
X
1
1
X
X
X
1
1
X
X
X
1
1
X
X
X
1
1
X
X
X
1
1
X
X
X
1
1
X
X
X
1
1
3
2
1
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Vertical Format Units
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