Grass Valley Imagestore 750 v.3.0.1 - Manual (Page 69)

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Imagestore 750
User Manual
Oxtel Command Forwarding to a Co-Processor
Refer to Serial Connection to Intuition XG on page 207 for information on connecting the
Imagestore 750 and Intuition XG for command forwarding over a serial connection.
The keying layer parameter in the Oxtel automation protocol is always represented by a single
zero-based ASCII character in hexadecimal. The character can range from
0x0 to 0xF . The
numbers for the four keying layers are reserved. The higher numbers are then used to address
layers on the associated graphics co-processor according to the following table:
For example, if an Imagestore 750 receives a command to load a graphic into layer 0x4 , it will
forward this command to the co-processor to load the graphic into the first keying layer. To do
this the Imagestore 750 subtracts 4 from the layer value before relaying the command.
Commands forwarded by the Imagestore 750 can potentially address up to 12 keying layers on
the co-processor. However, the usable range is 0x0 to 0xB because Intuition XG supports a
maximum of 8 keying layers.
Command forwarding is supported for the following Oxtel automation commands:
Layer Number Co-Processor Layer Number Co-Processor
0x0 (DSK 1) 0x8 0x4
0x1 (DSK 2) 0x9 0x5
0x2 (DSK 3) 0xA 0x6
0x3 (DSK 4) 0xB 0x7
0x4 0x0 0xC unused
0x5 0x1 0xD unused
0x6 0x2 0xE unused
0x7 0x3 0xF unused
Table 4-15: Oxtel Command Keying layer forwarding to a Co-Processor
Cmd Description Cmd Description
0 Fade To/From Black Z2 Change Text Font and Color
1 Fade Keyer Up/Down Z3 Render Box
2 Cut To/From Black Z4 Change Image
3 Cut Keyer Up/Down Z5 Run Strap
@ Set Fader Angle Z6 Set Text Background to Matte
B Set Transition Duration Z7 Set Text Background to Gradient
8 Load Image From Library Z8 Set Text Background to Clear
A Erase Store Z9 Set Text Drop Shadow
O Enquire Loaded Image Status ZA Set Transparency
F Set Clip Gain Transparency ZB Set Text Tracking
R0 Load Image ZC Set Strap Speed
R1 Save Image ZD Set Template Background
Table 4-16: Oxtel Commands supported by Command Forwarding