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TVP4020
Programmers Reference Manual
Graphics Register Reference
175
Name:
Continue - New SubordinateEdge
Unit:
Rasterizer
Region: 0
Offset:
0x0000.8050
Tag:
0x000A
Reset Value:
Undefined
Write
0
8
16
24
31
Reserved
12 bit unsigned integer
This command causes rasterization to continue with a new subordinate edge. The
subordinate DDA is reloaded with the new parameters. The dominant edge is carried on
from the previous trapezoid. This is very useful when scan converting triangles with a
'knee' (i.e. two subordinate edges).
The data field holds the number of scanlines to fill. Note this count does not get loaded into
the Count register.
Name:
Count
Unit:
Rasterizer
Region: 0
Offset:
0x0000.8030
Tag:
0x0006
Reset Value:
Undefined
Read/write
0
8
16
24
31
Reserved
12 bit unsigned integer
Interpretation of contents is dependent on the mode set in the Render command i.e. it
specifies the number of pixels in a line, or the number of scanlines in a trapezoid.
ContinueNewSub
Count
Summary of Contents for TVP4020 PERMEDIA 2
Page 1: ...Texas Instruments TVP4020 PERMEDIA 2 Programmer s Reference Manual Issue 4 ...
Page 284: ...TVP4020 Programmers Reference Manual A Gouraud Shaded Triangle 275 ...
Page 292: ...TVP4020 Programmers Reference Manual Register Tables 283 ...
Page 314: ...TVP4020 Programmers Reference Manual Index 305 ...
Page 315: ...Index TVP4020 Programmers Reference Manual 306 Index ...
Page 323: ...Index TVP4020 Programmers Reference Manual 314 ...