Slice 1 to slice 11 – Compuprint MDP40B Programmer Manual User Manual
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Slice 1 to Slice 11
Each byte defines the image information for the vertical columns
(slices) of the graphic. Slice 1 defines the leftmost vertical column,
and Slice 11 defines the rightmost. Within each byte the most
significant bit (bit 7) defines the topmost dot and the least significant
bit (bit 0) defines the bottommost dot of the slice. A bit being on
indicates that its associated dot is to be printed. The eight bits of
data are mapped onto 20 wires in the printer to give the same aspect
ratio. Bit image is mapped as follows:
1. Ascender
Dot
Position
Top
Bit
Number
Print
Wires
o
7
1, 2
If dots 7 and 6 are printed, wire 3 is used
o 6
4,
5
o
5
6, 7
If dots 5 and 4 are printed, wire 8 is used
o 4
9,
10
o
3
11, 12 If dots 3 and 2 are printed, wire 13 is used
o 2
14,
15
o
1
16, 17 If dots 1 and 0 are printed, wire 18 is used
o 0
19,
20
Bottom
1. Ascender
Dot
Position
Top
Bit
Number
Print
Wires
o
7
4, 5
If dots 7 and 6 are printed, wire 6 is used
o 6
7,
8
o
5
9, 10
If dots 5 and 4 are printed, wire 11 is used
o 4
12,
13
o
3
14, 15 If dots 3 and 2 are printed, wire 16 is used
o 2
17,
18
o
1
19, 20 If dots 1 and 0 are printed, wire 21 is used
o 0
22,
23
Bottom