PDriverDP copies the 256 byte config block into a 272 byte buffer, and overwrites certain locations as follows:
Offset Size Meaning
0 byte height in dots of a strip (PrintEdit's DumpDepth)
1 byte vertical interlace passes (PrintEdit's x interlace)
2 byte horizontal interlace passes (PrintEdit's y interlace)
3 byte passes over line - 1
4 byte strip type
5 byte output depth: 1 => monchrome
8 => greyscale or colour
6 byte passes per strip 0 => 1 pass
7 byte number of current pass
8 word PDriverDP's copy of dumper's private word
256 word dumper configuration word (passed in R5)
260 word pointer to active dumper
264 word printer dumper number
268 word left margin (pixels)
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